INTERMEDIATE FILM FOR LAMINATED GLASS, AND LAMINATED GLASS

Abstract

The present invention aims to provide an interlayer film for laminated glass capable of displaying images with a high luminous intensity when irradiated with a light beam and having excellent durability, and a laminated glass including the interlayer film for laminated glass. The present invention relates to an interlayer film for laminated glass, including a light-emitting layer that contains a polyvinyl acetal resin and a lanthanoid complex as light-emitting particles, the light-emitting layer containing not more than 100 ppm in total of a nitric acid-derived component and a carbonate component.

Claims

1. An interlayer film for laminated glass, comprising: a light-emitting layer containing a polyvinyl acetal resin and a lanthanoid complex as light-emitting particles, the light-emitting layer containing not more than 100 ppm in total of a nitric acid-derived component and a carbonate component.

2. The interlayer film for laminated glass according to claim 1, wherein the light-emitting layer contains not more than 50 ppm in total of a nitric acid-derived component and a carbonate component.

3. The interlayer film for laminated glass according to claim 1, wherein the lanthanoid complex is a lanthanoid complex with a bidentate ligand containing a halogen atom or a lanthanoid complex with a tridentate ligand containing a halogen atom.

4. The interlayer film for laminated glass according to claim 1, wherein the lanthanoid complex is a lanthanoid complex with a bidentate ligand containing a halogen atom and having an acetylacetone skeleton.

5. The interlayer film for laminated glass according to claim 3, wherein the halogen atom is a fluorine atom.

6. A laminated glass comprising: two transparent plates; and the interlayer film for laminated glass according to claim 1 interposed between the transparent plates.

7. The interlayer film for laminated glass according to claim 2, wherein the lanthanoid complex is a lanthanoid complex with a bidentate ligand containing a halogen atom or a lanthanoid complex with a tridentate ligand containing a halogen atom.

8. The interlayer film for laminated glass according to claim 2, wherein the lanthanoid complex is a lanthanoid complex with a bidentate ligand containing a halogen atom and having an acetylacetone skeleton.

9. The interlayer film for laminated glass according to claim 7, wherein the halogen atom is a fluorine atom.

10. The interlayer film for laminated glass according to claim 4, wherein the halogen atom is a fluorine atom.

11. The interlayer film for laminated glass according to claim 8, wherein the halogen atom is a fluorine atom.

12. A laminated glass comprising: two transparent plates; and the interlayer film for laminated glass according to claim 2 interposed between the transparent plates.

13. A laminated glass comprising: two transparent plates; and the interlayer film for laminated glass according to claim 3 interposed between the transparent plates.

14. A laminated glass comprising: two transparent plates; and the interlayer film for laminated glass according to claim 4 interposed between the transparent plates.

15. A laminated glass comprising: two transparent plates; and the interlayer film for laminated glass according to claim 5 interposed between the transparent plates.

16. A laminated glass comprising: two transparent plates; and the interlayer film for laminated glass according to claim 7 interposed between the transparent plates.

17. A laminated glass comprising: two transparent plates; and the interlayer film for laminated glass according to claim 8 interposed between the transparent plates.

18. A laminated glass comprising: two transparent plates; and the interlayer film for laminated glass according to claim 9 interposed between the transparent plates.

19. A laminated glass comprising: two transparent plates; and the interlayer film for laminated glass according to claim 10 interposed between the transparent plates.

20. A laminated glass comprising: two transparent plates; and the interlayer film for laminated glass according to claim 11 interposed between the transparent plates.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0102] FIG. 1 illustrates a schematic view of an exemplary embodiment of the interlayer film for laminated glass of the present invention having a wedge-shaped cross section.

[0103] FIG. 2 illustrates a schematic view of an exemplary embodiment of the interlayer film for laminated glass of the present invention having a wedge-shaped cross section.

[0104] FIG. 3 illustrates a schematic view of an exemplary embodiment of the interlayer film for laminated glass of the present invention having a wedge-shaped cross section.

DESCRIPTION OF EMBODIMENTS

[0105] Embodiments of the present invention are more specifically described below with reference to, but not limited to, examples.

<Preparation of polyvinyl butyral>

(Preparation of PVB1-1)

[0106] To a 2 m.sup.3 reactor fitted with a stirrer were charged 1700 kg of a 7.5% by mass aqueous solution of PVA (degree of polymerization: 1700, degree of saponification: 99 mol %), 74.6 kg of n-butyraldehyde, and 0.13 kg of 2,6-di-t-butyl-4-methyl phenol, and the entire mixture was cooled to 14 C. Subsequently, 99.44 L of 30% by mass nitric acid was added to the mixture to initiate the butyralization of PVA. Ten minutes after the end of the addition, the temperature was raised to 65 C. over 90 minutes, followed by further reaction for 120 minutes. Thereafter, the temperature was lowered to room temperature, and the precipitated solid was filtered. The solid was washed ten times with a 10-fold amount (by mass) of ion exchange water (washing before neutralization). The washed solid was sufficiently neutralized using a 0.3% by mass sodium hydrogen carbonate aqueous solution and was then washed ten times with a 10-fold amount (by mass) of ion exchange water (washing after neutralization). The resulting solid was dehydrated and dried, thereby obtaining polyvinyl butyral 1-1 (hereinafter, also referred to as PVB1-1). The acetyl group content, butyral group content, and hydroxy group content of PVB1-1 were 1 mol %, 69 mol %, and 30 mol %, respectively.

(Preparation of PVB1-2)

[0107] To a 2 m.sup.3 reactor fitted with a stirrer were charged 1700 kg of a 7.5% by mass aqueous solution of PVA (degree of polymerization: 1700, degree of saponification: 99 mol %), 74.6 kg of n-butyraldehyde, and 0.13 kg of 2,6-di-t-butyl-4-methyl phenol, and the entire mixture was cooled to 14 C. Subsequently, 99.44 L of 30% by mass nitric acid was added to the mixture to initiate the butyralization of PVA. Ten minutes after the end of the addition, the temperature was raised to 65 C. over 90 minutes, followed by further reaction for 120 minutes. Thereafter, the temperature was lowered to room temperature, and the precipitated solid was filtered. The solid was washed ten times with a 10-fold amount (by mass) of ion exchange water (washing before neutralization). The washed solid was sufficiently neutralized using a 0.15% by mass sodium hydroxide aqueous solution. The resulting solid was dehydrated and dried, thereby obtaining polyvinyl butyral 1-2 (hereinafter, also referred to as PVB1-2). The acetyl group content, butyral group content, and hydroxy group content of PVB1-2 were 1 mol %, 69 mol %, and 30 mol %, respectively.

(Preparation of PVB1-3)

[0108] To a 2 m.sup.3 reactor fitted with a stirrer were charged 1700 kg of a 7.5% by mass aqueous solution of PVA (degree of polymerization: 1700, degree of saponification: 99 mol %), 74.6 kg of n-butyraldehyde, and 0.13 kg of 2,6-di-t-butyl-4-methyl phenol, and the entire mixture was cooled to 14 C. Subsequently, 99.44 L of 20% by mass hydrochloric acid was added to the mixture to initiate the butyralization of PVA. Ten minutes after the end of the addition, the temperature was raised to 65 C. over 90 minutes, followed by further reaction for 120 minutes. Thereafter, the temperature was lowered to room temperature, and the precipitated solid was filtered. The solid was washed ten times with a 10-fold amount (by mass) of ion exchange water (washing before neutralization). The washed solid was sufficiently neutralized using a 0.3% by mass sodium hydrogen carbonate aqueous solution. The resulting solid was dehydrated and dried, thereby obtaining polyvinyl butyral 1-3 (hereinafter, also referred to as PVB1-3). The acetyl group content, butyral group content, and hydroxy group content of PVB1-3 were 1 mol %, 69 mol %, and 30 mol %, respectively.

(Preparation of PVB1-4)

[0109] To a 2 m.sup.3 reactor fitted with a stirrer were charged 1700 kg of a 7.5% by mass aqueous solution of PVA (degree of polymerization: 1700, degree of saponification: 99 mol %), 74.6 kg of n-butyraldehyde, and 0.13 kg of 2,6-di-t-butyl-4-methyl phenol, and the entire mixture was cooled to 14 C. Subsequently, 99.44 L of 30% by mass nitric acid was added to the mixture to initiate the butyralization of PVA. Ten minutes after the end of the addition, the temperature was raised to 65 C. over 90 minutes, followed by further reaction for 120 minutes. Thereafter, the temperature was lowered to room temperature, and the precipitated solid was filtered. The solid was washed five times with a 10-fold amount (by mass) of ion exchange water (washing before neutralization). The washed solid was sufficiently neutralized using a 0.3% by mass sodium hydrogen carbonate aqueous solution and was then washed ten times with a 10-fold amount (by mass) of ion exchange water (washing after neutralization). The resulting solid was dehydrated and dried, thereby obtaining polyvinyl butyral 1-4 (hereinafter, also referred to as PVB1-4). The acetyl group content, butyral group content, and hydroxy group content of PVB1-4 were 1 mol %, 69 mol %, and 30 mol %, respectively.

(Preparation of PVB1-5)

[0110] To a 2 m.sup.3 reactor fitted with a stirrer were charged 1700 kg of a 7.5% by mass aqueous solution of PVA (degree of polymerization: 1700, degree of saponification: 99 mol %), 74.6 kg of n-butyraldehyde, and 0.13 kg of 2,6-di-t-butyl-4-methyl phenol, and the entire mixture was cooled to 14 C. Subsequently, 99.44 L of 30% by mass nitric acid was added to the mixture to initiate the butyralization of PVA. Ten minutes after the end of the addition, the temperature was raised to 65 C. over 90 minutes, followed by further reaction for 120 minutes. Thereafter, the temperature was lowered to room temperature, and the precipitated solid was filtered. The solid was sufficiently neutralized using a 0.3% by mass sodium hydrogen carbonate aqueous solution and was then washed ten times with a 10-fold amount (by mass) of ion exchange water (washing after neutralization). The resulting solid was dehydrated and dried, thereby obtaining polyvinyl butyral 1-5 (hereinafter, also referred to as PVB1-5). The acetyl group content, butyral group content, and hydroxy group content of PVB1-5 were 1 mol %, 69 mol %, and 30 mol %, respectively.

(Preparation of PVB1-6)

[0111] To a 2 m.sup.3 reactor fitted with a stirrer were charged 1700 kg of a 7.5% by mass aqueous solution of PVA (degree of polymerization: 1700, degree of saponification: 99 mol %), 74.6 kg of n-butyraldehyde, and 0.13 kg of 2,6-di-t-butyl-4-methyl phenol, and the entire mixture was cooled to 14 C. Subsequently, 99.44 L of 30% by mass nitric acid was added to the mixture to initiate the butyralization of PVA. Ten minutes after the end of the addition, the temperature was raised to 65 C. over 90 minutes, followed by further reaction for 120 minutes. Thereafter, the temperature was lowered to room temperature, and the precipitated solid was filtered. The solid was washed ten times with a 10-fold amount (by mass) of ion exchange water (washing before neutralization). The washed solid was sufficiently neutralized using a 0.3% by mass sodium hydrogen carbonate aqueous solution. The resulting solid was dehydrated and dried, thereby obtaining polyvinyl butyral 1-6 (hereinafter, also referred to as PVB1-6). The acetyl group content, butyral group content, and hydroxy group content of PVB1-6 were 1 mol %, 69 mol %, and 30 mol %, respectively.

(Preparation of PVB1-7)

[0112] To a 2 m.sup.3 reactor fitted with a stirrer were charged 1700 kg of a 7.5% by mass aqueous solution of PVA (degree of polymerization: 1700, degree of saponification: 99 mol %), 74.6 kg of n-butyraldehyde, and 0.13 kg of 2,6-di-t-butyl-4-methyl phenol, and the entire mixture was cooled to 14 C. Subsequently, 99.44 L of 30% by mass nitric acid was added to the mixture to initiate the butyralization of PVA. Ten minutes after the end of the addition, the temperature was raised to 65 C. over 90 minutes, followed by further reaction for 120 minutes. Thereafter, the temperature was lowered to room temperature, and the precipitated solid was filtered. The solid was washed ten times with a 10-fold amount (by mass) of ion exchange water (washing before neutralization). The washed solid was sufficiently neutralized using a 0.15% by mass sodium hydroxide aqueous solution and was then washed four times with a 10-fold amount (by mass) of ion exchange water (washing after neutralization). The resulting solid was dehydrated and dried, thereby obtaining polyvinyl butyral 1-7 (hereinafter, also referred to as PVB1-7). The acetyl group content, butyral group content, and hydroxy group content of PVB1-7 were 1 mol %, 69 mol %, and 30 mol %, respectively.

(Preparation of PVB1-8)

[0113] To a 2 m.sup.3 reactor fitted with a stirrer were charged 1700 kg of a 7.5% by mass aqueous solution of PVA (degree of polymerization: 1700, degree of saponification: 99 mol %), 74.6 kg of n-butyraldehyde, and 0.13 kg of 2,6-di-t-butyl-4-methyl phenol, and the entire mixture was cooled to 14 C. Subsequently, 99.44 L of 20% by mass hydrochloric acid was added to the mixture to initiate the butyralization of PVA. Ten minutes after the end of the addition, the temperature was raised to 65 C. over 90 minutes, followed by further reaction for 120 minutes. Thereafter, the temperature was lowered to room temperature, and the precipitated solid was filtered. The solid was washed three times with a 10-fold amount (by mass) of ion exchange water (washing before neutralization). The washed solid was sufficiently neutralized using a 0.3% by mass sodium hydrogen carbonate aqueous solution. The resulting solid was dehydrated and dried, thereby obtaining polyvinyl butyral 1-8 (hereinafter, also referred to as PVB1-8). The acetyl group content, butyral group content, and hydroxy group content of PVB1-8 were 1 mol %, 69 mol %, and 30 mol %, respectively.

(Preparation of PVB1-9)

[0114] To a 2 m.sup.3 reactor fitted with a stirrer were charged 1700 kg of a 7.5% by mass aqueous solution of PVA (degree of polymerization: 1700, degree of saponification: 99 mol %), 74.6 kg of n-butyraldehyde, and 0.13 kg of 2,6-di-t-butyl-4-methyl phenol, and the entire mixture was cooled to 14 C. Subsequently, 99.44 L of 20% by mass hydrochloric acid was added to the mixture to initiate the butyralization of PVA. Ten minutes after the end of the addition, the temperature was raised to 65 C. over 90 minutes, followed by further reaction for 120 minutes. Thereafter, the temperature was lowered to room temperature, and the precipitated solid was filtered. The solid was washed ten times with a 10-fold amount (by mass) of ion exchange water (washing before neutralization). The washed solid was sufficiently neutralized using a 0.3% by mass sodium hydrogen carbonate aqueous solution and was then washed six times with a 10-fold amount (by mass) of ion exchange water (washing after neutralization). The resulting solid was dehydrated and dried, thereby obtaining polyvinyl butyral 1-9 (hereinafter, also referred to as PVB1-9). The acetyl group content, butyral group content, and hydroxy group content of PVB1-9 were 1 mol %, 69 mol %, and 30 mol %, respectively.

(Preparation of PVB2-1)

[0115] To a 2 m.sup.3 reactor fitted with a stirrer were charged 1700 kg of a 7.5% by mass aqueous solution of PVA (degree of polymerization: 2400, degree of saponification: 88 mol%), 119.4 kg of n-butyraldehyde, and 0.13 kg of 2,6-di-t-butyl-4-methyl phenol, and the entire mixture was cooled to 14 C. Subsequently, 99.44 L of 30% by mass nitric acid was added to the mixture to initiate the butyralization of PVA. Ten minutes after the end of the addition, the temperature was raised to 65 C. over 90 minutes, followed by further reaction for 120 minutes. Thereafter, the temperature was lowered to room temperature, and the precipitated solid was filtered. The solid was washed ten times with a 10-fold amount (by mass) of ion exchange water (washing before neutralization). The washed solid was sufficiently neutralized using a 0.3% by mass sodium hydrogen carbonate aqueous solution and was then washed ten times with a 10-fold amount (by mass) of ion exchange water (washing after neutralization). The resulting solid was dehydrated and dried, thereby obtaining polyvinyl butyral 2-1 (hereinafter, also referred to as PVB2-1). The acetyl group content, butyral group content, and hydroxy group content of PVB2-1 were 12 mol % , 66 mol %, and 22 mol %, respectively.

(Preparation of PVB2-2)

[0116] To a 2 m.sup.3 reactor fitted with a stirrer were charged 1700 kg of a 7.5% by mass aqueous solution of PVA (degree of polymerization: 2400, degree of saponification: 88 mol %), 119.4 kg of n-butyraldehyde, and 0.13 kg of 2,6-di-t-butyl-4-methyl phenol, and the entire mixture was cooled to 14 C. Subsequently, 99.44 L of 30% by mass nitric acid was added to the mixture to initiate the butyralization of PVA. Ten minutes after the end of the addition, the temperature was raised to 65 C. over 90 minutes, followed by further reaction for 120 minutes. Thereafter, the temperature was lowered to room temperature, and the precipitated solid was filtered. The solid was washed ten times with a 10-fold amount (by mass) of ion exchange water (washing before neutralization). The washed solid was sufficiently neutralized using a 0.3% by mass sodium hydrogen carbonate aqueous solution. The resulting solid was dehydrated and dried, thereby obtaining polyvinyl butyral 2-2 (hereinafter, also referred to as PVB2-2). The acetyl group content, butyral group content, and hydroxy group content of PVB2-2 were 12 mol %, 66 mol %, and 22 mol %, respectively.

EXAMPLE 1

(1) Preparation of Eu(TFA).SUB.3.phen

[0117] Europium acetate (Eu(CH.sub.3COO).sub.3) in an amount of 5 g (12.5 mmol) was dissolved in 50 mL of distilled water. To the solution was added 7 g (33.6 mmol) of trifluoroacetylacetone (TFA, CH.sub.3COCH.sub.2COCF.sub.3) and stirred at room temperature for 3 hours. The precipitated solid was filtered, washed with water, and recrystallized using methanol and distilled water to give Eu(TFA).sub.3(H.sub.2O).sub.2. Then, 5.77 g of the resulting complex (Eu(TFA).sub.3(H.sub.2O).sub.2) and 2.5 g of 1,10-phenanthroline (phen) were dissolved in 100 mL of methanol, followed by heating under reflux for 12 hours. After 12 hours, methanol was distilled off under reduced pressure, thereby obtaining a white product. The white product powder was washed with toluene so that unreacted materials were removed by suction filtration. Subsequently, toluene was distilled off under reduced pressure to give a powder. Through recrystallization using a solvent mixture of toluene and hexane, Eu(TFA).sub.3phen was obtained.

(2) Production of Interlayer Film for Laminated Glass and Laminated Glass

[0118] A luminous plasticizer solution was prepared by adding 0.2 parts by weight of the Eu(TFA).sub.3phen obtained above as light-emitting particles to 40 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO). The entire amount of the plasticizer solution was sufficiently kneaded with 100 parts by weight of PVB1-1 using a mixing roll to give a resin composition.

[0119] The resin composition was extruded with an extruder to provide an interlayer film for laminated glass (thickness: 760 m).

[0120] The resulting interlayer film for laminated glass was interposed between a pair of clear glass plates (thickness: 2.5 mm, 5 cm in length5 cm in width) to prepare a laminate. The laminate was press-bonded under vacuum at 90 C. for 30 minutes using a vacuum laminator. The press-bonded laminate was subjected to further 20-minute press-bonding under 14 MPa at 140 C. using an autoclave, thereby obtaining a laminated glass.

EXAMPLE 2

(1) Preparation of Eu(TFA).SUB.3.dpphen

[0121] Eu(TFA).sub.3dpphen was obtained as in Example 1, except that 4,7-diphenyl phenanthroline was used instead of 1,10-phenanthroline.

(2) Production of Interlayer Film for Laminated Glass and Laminated Glass

[0122] An interlayer film for laminated glass and a laminated glass were produced as in Example 1, except that the Eu(TFA).sub.3dpphen obtained above was used as light-emitting particles.

EXAMPLE 3

(1) Preparation of Eu(HFA).SUB.3.phen

[0123] Eu(HFA).sub.3phen was prepared as in Example 1, except that hexafluoroacetylacetone was used instead of trifluoroacetylacetone.

(2) Production of Interlayer Film for Laminated Glass and Laminated Glass

[0124] An interlayer film for laminated glass and a laminated glass were produced as in Example 1, except that the Eu (HFA) .sub.3phen obtained above was used as light-emitting particles.

EXAMPLE 4

(1) Preparation of Tb(TFA).SUB.3.phen

[0125] Tb(TFA).sub.3phen was prepared as in Example 1, except that terbium acetate was used instead of europium acetate.

(2) Production of Interlayer Film for Laminated Glass and Laminated Glass

[0126] An interlayer film for laminated glass and a laminated glass were produced as in Example 1, except that the Tb(TFA).sub.3phen obtained above was used as light-emitting particles.

EXAMPLES 5 TO 7

[0127] An interlayer film for laminated glass and a laminated glass were produced as in Example 1, except that the polyvinyl butyral resin and light-emitting particles shown in Table 1 were used.

Comparative Example 1

[0128] An interlayer film for laminated glass and a laminated glass were produced as in Example 2, except that the polyvinyl butyral resin used was changed to PVB1-5.

Comparative Example 2

[0129] An interlayer film for laminated glass and a laminated glass were produced as in Example 2, except that the polyvinyl butyral resin used was changed to PVB1-6.

Comparative Examples 3 and 4

[0130] An interlayer film for laminated glass and a laminated glass were produced as in Example 1, except that the polyvinyl butyral resin and light-emitting particles shown in Table 1 were used.

EXAMPLES 8 TO 12

Comparative Examples 5 and 6

[0131] An interlayer film for laminated glass and a laminated glass were produced as in Example 1, except that the polyvinyl butyral resin and light-emitting particles shown in Table 2 were used, and the amount of the light-emitting particles was changed as shown in Table 2.

EXAMPLE 13

[0132] To 40 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO) was added 0.2 parts by weight of the Eu(HFA).sub.3phen obtained in Example 3. Further, tin-doped indium oxide particles (ITO particles) as a heat ray absorber was added in an amount of 0.15% by weight in 100% by weight of an interlayer film to be obtained so that a luminous plasticizer solution was prepared. The entire amount of the plasticizer solution was sufficiently kneaded with 100 parts by mass of PVB1-1 using a mixing roll to give a resin composition.

[0133] The resin composition was extruded with an extruder to provide an interlayer film for laminated glass (thickness: 760 m).

[0134] The resulting interlayer film for laminated glass was interposed between a pair of clear glass plates (thickness: 2.5 mm, 5 cm in length5 cm in width) to prepare a laminate. The laminate was press-bonded under vacuum at 90 C. for 30 minutes using a vacuum laminator. The press-bonded laminate was subjected to further 20-minute press-bonding under 14 MPa at 140 C. using an autoclave, thereby obtaining a laminated glass.

EXAMPLE 14

[0135] To 40 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO) was added 0.2 parts by weight of the Eu(HFA).sub.3phen obtained in Example 3. Further, cesium-doped tungsten oxide (Cs0.33WO3) particles (CWO particles) as a heat ray absorber was added in an amount of 0.05% by weight in 100% by weight of an interlayer film to be obtained so that a luminous plasticizer solution was prepared. The entire amount of the plasticizer solution was sufficiently kneaded with 100 parts by mass of PVB1-1 using a mixing roll to give a resin composition.

[0136] The resin composition was extruded with an extruder to provide an interlayer film for laminated glass (thickness: 760 m).

[0137] The resulting interlayer film for laminated glass was interposed between a pair of clear glass plates (thickness: 2.5 mm, 5 cm in length5 cm in width) to prepare a laminate. The laminate was press-bonded under vacuum at 90 C. for 30 minutes using a vacuum laminator. The press-bonded laminate was subjected to further 20-minute press-bonding under 14 MPa at 140 C. using an autoclave, thereby obtaining a laminated glass.

EXAMPLES 15 AND 16

[0138] An interlayer film for laminated glass and a laminated glass were produced as in Example 13, except that the light-emitting particles and heat ray absorber shown in Table 3 were used, and the amount of the heat ray absorber was changed as shown in Table 3.

EXAMPLE 17

(Preparation of Resin Composition for Light-Emitting Layers)

[0139] A luminous plasticizer solution was prepared by adding 0.5 parts by weight of the Eu (HFA).sub.3phen obtained in Example 3 to 40 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO). The entire amount of the plasticizer solution was sufficiently kneaded with 100 parts by mass of PVB1-1 using a mixing roll to give a resin composition for light-emitting layers.

(Preparation of Resin Composition for Adhesive Layers)

[0140] A resin composition for adhesive layers was prepared by sufficiently kneading 40 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO) and 100 parts by mass of PVB1-9 using a mixing roll.

(Production of Interlayer Film for Laminated Glass and Laminated Glass)

[0141] The resin composition for light-emitting layers and the resin composition for adhesive layers were co-extruded using a coextruder to prepare an interlayer film for laminated glass (thickness: 0.8 mm) in which a light-emitting layer was interposed between two adhesive layers. The light-emitting layer had a thickness of 0.1 mm, and the adhesive layer had a thickness of 0.35 mm.

[0142] The resulting interlayer film for laminated glass was interposed between a pair of clear glass plates (thickness: 2.5 mm, 5 cm in length5 cm in width) to prepare a laminate. The laminate was press-bonded under vacuum at 90 C. for 30 minutes using a vacuum laminator. The press-bonded laminate was subjected to further 20-minute press-bonding under 14 MPa at 140 C. using an autoclave, thereby obtaining a laminated glass.

(Production of Laminated Glass for Evaluation of Penetration Resistance)

[0143] The resulting interlayer film for laminated glass was interposed between a pair of clear glass plates (thickness: 2.5 mm, 30 cm in length30 cm in width) to prepare a laminate. The laminate was press-bonded under vacuum at 90 C. for 30 minutes using a vacuum laminator. The press-bonded laminate was subjected to further 20-minute press-bonding under 14 MPa at 140 C. using an autoclave. The portion of the interlayer film protruding from the glass plates was cut off, thereby obtaining a laminated glass for evaluation of penetration resistance.

EXAMPLES 18 TO 21

Comparative Examples 7 and 8

[0144] An interlayer film for laminated glass and a laminated glass were produced as in Example 17, except that the polyvinyl butyral resin and light-emitting particles shown in Table 4 were used, and the amount of the plasticizer was changed as shown in Table 4.

EXAMPLE 22

(Preparation of Resin Composition for Light-Emitting Layers)

[0145] A luminous plasticizer solution was prepared by adding 0.5 parts by weight of the Eu(HFA).sub.3phen obtained in Example 3 to 40 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO). The entire amount of the plasticizer solution was sufficiently kneaded with 100 parts by mass of PVB1-1 using a mixing roll to give a resin composition for light-emitting layers.

(Preparation of Resin Composition for Shape-Adjusting Layers)

[0146] A resin composition for shape-adjusting layers was prepared by sufficiently kneading 40 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO) and 100 parts by weight of PVB1-9 using a mixing roll.

(Production of Interlayer Film for Laminated Glass and Laminated Glass)

[0147] The resin composition for light-emitting layers and the resin composition for shape-adjusting layers were co-extruded using a coextruder to prepare an interlayer film for laminated glass shown in FIG. 3 having a three-layer structure in which a shape-adjusting layer, a light-emitting layer, and a shape-adjusting layer were stacked in this order. The minimum distance from one edge to the other edge of the obtained interlayer film in a direction perpendicular to the extrusion direction was measured to be 1 m.

[0148] The light-emitting layer of the resulting interlayer film for laminated glass had a wedge-shaped cross section with a minimum thickness of 100 m and a maximum thickness of 200 m. The entire interlayer film for laminated glass had a minimum thickness of 800 m, a maximum thickness of 1250 m, and a wedge angle of 0.45 mrad. The interlayer film for laminated glass was thinnest at one edge and thickest at the other edge. The minimum thickness and maximum thickness were measured by observation using an optical microscope.

[0149] The interlayer film was interposed between two transparent float glass plates (1000 mm in length300 mm in width2.5 mm in thickness) to prepare a laminate. The laminate was temporarily press-bonded using a heating roll at 230 C. The temporarily press-bonded laminate was press-bonded by a roll heat method using an autoclave under a pressure of 1.2 MPa at 135 C. for 20 minutes, thereby obtaining a laminated glass (1000 mm in length300 mm in width).

(Production of Laminated Glass for Luminance Measurement)

[0150] The interlayer film (thin part) having a length of 10 cm and a width of 10 cm was cut out in a manner the center thereof was 10 cm from one edge and on the line with the minimum distance from the one edge to the other edge. The resulting interlayer film (thin part) was interposed between two transparent float glass plates (5 cm in length5 cm in width2.5 mm in thickness) to prepare a laminate. The laminate was temporarily press-bonded using a heating roll at 230 C. The temporarily press-bonded laminate was press-bonded by a roll heat method using an autoclave under a pressure of 1.2 MPa at 135 C. for 20 minutes, thereby obtaining a laminated glass for luminance measurement (5 cm in length5 cm in width).

EXAMPLES 23 TO 25

Comparative Examples 9 and 10

[0151] An interlayer film for laminated glass and a laminated glass were produced as in Example 22, except that the polyvinyl butyral resin and the light-emitting particles shown in Table 5 were used, and the maximum thickness of the entire interlayer film and the wedge angle were changed as shown in Table 5.

EXAMPLE 26

(Preparation of Resin Composition for Light-Emitting Layers)

[0152] A luminous plasticizer solution was prepared by adding 0.2 parts by weight of the Eu(HFA).sub.3phen obtained in Example 3 to 40 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO). The entire amount of the plasticizer solution and 100 parts by weight of PVB1-1 were sufficiently kneaded using a mixing roll to prepare a resin composition for light-emitting layers.

(Preparation of Resin Composition for First Resin Layer and Second Resin Layer)

[0153] A resin composition for shape-adjusting layers was prepared by sufficiently kneading 40 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO) and 100 parts by weight of PVB1-1 using a mixing roll.

(Preparation of Resin Composition for Sound Insulating Layers)

[0154] A resin composition for sound insulating layers was prepared by sufficiently kneading 60 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO) and 100 parts by weight of PVB2-1 using a mixing roll.

(Production of Interlayer Film for Laminated Glass and Laminated Glass)

[0155] The resin composition for light-emitting layers was extruded into a single layer using an extruder to prepare a light-emitting layer (thickness: 760 m).

[0156] The resin composition for first resin layer and second resin layer and the resin composition for sound insulating layers were co-extruded using a coextruder to prepare a laminate having a three-layer structure as shown in FIG. 3 in which a first resin layer, a sound insulating layer, and a second resin layer were stacked in this order. The light-emitting layer was stacked on the outer surface of the second resin layer of the laminate, thereby obtaining an interlayer film for laminated glass. The minimum distance from one edge to the other edge of the obtained interlayer film in a direction perpendicular to the extrusion direction was measured to be 1 m.

[0157] In the resulting interlayer film for laminated glass, the sound insulating layer had a wedge-shaped cross section with a minimum thickness of 100 m and a maximum thickness of 200 m; the first resin layer had a wedge-shaped cross section with a minimum thickness of 350 m and a maximum thickness of 525 m; and the second resin layer had a wedge-shaped cross section with a minimum thickness of 350 m and a maximum thickness of 525 m. The entire interlayer film for laminated glass had a wedge-shaped cross section with a minimum thickness of 1560 m, a maximum thickness of 2010 m, and a wedge angle of 0.45 mrad. The interlayer film for laminated glass was thinnest at one edge and thickest at the other edge. The minimum thickness and maximum thickness were measured by observation using an optical microscope.

[0158] The interlayer film was interposed between two transparent float glass plates (1000 mm in length300 mm in width2.5 mm in thickness) to prepare a laminate. The laminate was temporarily press-bonded using a heating roll at 230 C. The temporarily press-bonded laminate was press-bonded by a roll heat method using an autoclave under a pressure of 1.2 MPa at 135 C. for 20 minutes, thereby obtaining a laminated glass (1000 mm in length300 mm in width).

(Production of Laminated Glass for Luminance Measurement)

[0159] The interlayer film (thin part) having a length of 10 cm and a width of 10 cm was cut out in a manner the center thereof was 10 cm from one edge and on the line with the minimum distance from the one edge to the other edge. The resulting interlayer film (thin part) was interposed between two transparent float glass plates (5 cm in length5 cm in width2. 5 mm in thickness) to prepare a laminate. The laminate was temporarily press-bonded using a heating roll at 230 C. The temporarily press-bonded laminate was press-bonded by a roll heat method using an autoclave under a pressure of 1.2 MPa at 135 C. for 20 minutes, thereby obtaining a laminated glass for luminance measurement (5 cm in length5 cm in width).

EXAMPLES 27 TO 29

Comparative Examples 11 and 12

[0160] An interlayer film for laminated glass and laminated glass were produced as in Example 26, except that the polyvinyl butyral resin and the light-emitting particles shown in Table 6 were used.

(Evaluation)

[0161] The interlayer films for laminated glass and laminated glasses obtained in the examples and comparative examples were evaluated by the methods below. Tables 1 to 6 show the results.

(1) Measurement of the Amount of Nitric Acid-Derived Components or the Like in Interlayer Films for Laminated Glass

[0162] The amounts of nitric acid-derived components and carbonate components in the interlayer films for laminated glass were measured by the electric conductivity method using an ion chromatograph (ICS-2000) available from Diionex. The details of the measurement procedure are described below.

[0163] The laminated glasses obtained in Examples 1 to 29 and Comparative Examples 1 to 12 were each cooled with liquid nitrogen to separate the interlayer film for laminated glass from the glass plates. The separated interlayer film for laminated glass was allowed to stand under 25 C. and 30% humidity for 2 hours.

[0164] The layers of laminated glasses obtained in Examples 17 to 29 and Comparative Examples 7 to 12 which included multiple interlayer films for laminated glass were separated by the following procedure. A finger was inserted between the light-emitting layer and the adhesive layer, and these layers were separated from this site at a rate of 1 to 5 cm/s. After separation, the light-emitting layer and the adhesive layer were allowed to stand under 25 C. and 30% humidity for 2 hours. The shape-adjusting layer, first resin layer, sound insulating layer, and second resin layer were separated in the same manner.

[0165] A 0.5 cm0.5 cm sample piece was cut out of each of the light-emitting layer, adhesive layer, shape-adjusting layer, first resin layer, sound insulating layer, and second resin layer, and the samples were weighed. Each sample was dissolved in 45 mL of chloroform, and 50 mL of ion exchange water was added to the solution. The resulting mixture was shaken for 1 hour, followed by standing for phase separation. After the phases were separated, the aqueous phase was extracted as a measurement liquid 1. After the extraction of the aqueous phase, 50 mL of ion exchange water was again added, and the above operation was repeated. The aqueous solution extracted after phase separation was used as a measurement liquid 2. The concentrations of nitric acid-derived components and carbonate components in the measurement liquid 1 and the measurement liquid 2 were determined by the electric conductivity method using ion chromatograph (ICS-2000) available from Diionex. Based on the concentrations of the nitric acid-derived components and carbonate components and the weights of the samples, the amounts of nitric acid-derived components and carbonate components in the light-emitting layer, adhesive layer, shape-adjusting layer, first resin layer, sound insulating layer, and second resin layer were calculated.

(2) Durability Evaluation

[0166] The laminated glasses obtained in Examples 1 to 21 and Comparative Examples 1 to 8 each in a size of 5 cm in length5 cm in width and the laminated glasses for luminance measurement obtained in Examples 22 to 29 and Comparative Examples 9 to 12 were each irradiated with light at an entire face in a dark room. The light was emitted from a high power xenon light source (REX-250 available from Asahi Spectra Co., Ltd, irradiation wavelength: 405 nm) located 10 cm away from the face of the laminated glass in the perpendicular direction. The initial luminance at 45 degrees to the face of the laminated glass irradiated with light was measured with a luminance meter (SR-3AR available from Topcon Technohouse Corporation) disposed at a minimum distance of 35 cm away from the face of the laminated glass on the side at which the light was emitted.

[0167] Next, the laminated glasses in a size of 5 cm5 cm were each irradiated with ultraviolet rays for 1000 hours with a JIS-UV tester (750 W, light source: silica glass mercury lamp). The luminance of the laminated glasses irradiated with ultraviolet rays was measured in the same manner as the measurement of initial luminance. Laminated glasses exhibiting luminance at an intensity of at least 50% that of the initial luminance after ultraviolet irradiation were evaluated as o (good), while those exhibiting luminance at an intensity of less than 50% that of the initial luminance after ultraviolet irradiation were evaluated as x (poor).

(3) Evaluation of Heat Insulation Properties

[0168] The laminated glasses obtained in Examples 13 to 16 were each measured for the transmittance and reflectance of light with a wavelength of 300 to 2500 nm in conformity with ISO 13837 using a spectrophotometer (U-4100 available from Hitachi High-Technologies Corporation), and calculated the Tts from the results.

(4) Evaluation of Penetration Resistance (Measurement of Pummel Value of Interlayer Film for Laminated Glass)

[0169] The laminated glasses for evaluation of penetration resistance obtained in Examples 17 to 21 and Comparative Examples 7 and 8 were left standing at 18 C.0.6 C. for 16 hours. A center portion (150 mm in length150 mm in width) of each laminated glass was shattered with a hammer having a 0.45 kg head into glass pieces with a size of 6 mm or smaller. Areas of the films from which glass pieces fell off were measured to determine the degree of exposure, and a pummel value was assigned based on the classifications indicated in Table 7.

(5) Evaluation of Double Image

[0170] The laminated glasses obtained in Examples 22 to 29 and Comparative Examples 9 to 12 (1000 mm in length300 mm in width) were each placed at the windshield position. Image information from a display unit disposed below the laminated glass was projected on the laminated glass. Whether double image phenomenon occurred or not was observed with eyes from a predetermined position. The laminated glasses causing no double image phenomenon were evaluated as o (good), while the laminated glasses causing double image phenomenon were evaluated as x (poor).

TABLE-US-00001 TABLE 1 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Resin (PVB) Type PVB1-1 PVB1-1 PVB1-1 PVB1-1 PVB1-2 PVB1-3 phr 100 100 100 100 100 100 Plasticizer (3GO) phr 40 40 40 40 40 40 Eu complex Structure Eu(TFA).sub.3 Eu(TFA).sub.3 Eu(HFA).sub.3 Tb(TFA).sub.3 Eu(HFA).sub.3 Eu(HFA).sub.3 phen dpphen phen phen phen phen phr 0.2 0.2 0.2 0.2 0.2 0.2 Nitrate component ppm 10 10 10 10 100 0 Carbonate component ppm 5 5 5 5 0 100 Initial light-emitting properties 220 210 215 520 200 203 Light-emitting properties after durability testing 190 180 174 475 137 126 Durability evaluation Comparative Comparative Comparative Comparative Example 7 Example 1 Example 2 Example 3 Example 4 Resin (PVB) Type PVB1-4 PVB1-5 PVB1-6 PVB1-5 PVB1-5 phr 100 100 100 100 100 Plasticizer (3GO) phr 40 40 40 40 40 Eu complex Structure Eu(HFA).sub.3 Eu(TFA).sub.3 Eu(TFA).sub.3 Eu(HFA).sub.3 Tb(TFA).sub.3 phen dpphen dpphen phen phen phr 0.2 0.2 0.2 0.2 0.2 Nitrate component ppm 50 70 100 70 70 Carbonate component ppm 50 70 100 70 70 Initial light-emitting properties 202 10 8 9 78 Light-emitting properties after durability testing 128 1 2 1 26 Durability evaluation X X X X

TABLE-US-00002 TABLE 2 Comparative Comparative Example 8 Example 9 Example 10 Example 11 Example 12 Example 5 Example 6 Resin (PVB) Type PVB1-1 PVB1-7 PVB1-2 PVB1-1 PVB1-2 PVB1-8 PVB1-8 phr 100 100 100 100 100 100 100 Plasticizer (3GO) phr 40 40 40 40 40 40 40 Eu complex Structure Eu(HFA).sub.3 Eu(HFA).sub.3 Eu(HFA).sub.3 Eu(HFA).sub.3 Eu(HFA).sub.3 Eu(HFA).sub.3 Eu(HFA).sub.3 phen phen phen phen phen phen phen phr 0.4 0.4 0.4 0.6 0.6 0.4 0.6 Nitrate component ppm 10 60 100 10 100 0 0 Carbonate component ppm 5 0 0 5 0 150 150 Initial light-emitting properties 440 410 430 720 700 200 330 Light-emitting properties after durability testing 410 330 290 695 590 53 86 Durability evaluation X X

TABLE-US-00003 TABLE 3 Example 13 Example 14 Example 15 Example 16 Resin (PVB) Type PVB1-1 PVB1-1 PVB1-1 PVB1-1 phr 100 100 100 100 Plasticizer (3GO) phr 40 40 40 40 Eu complex Structure Eu(HFA).sub.3 Eu(HFA).sub.3 Eu(HFA).sub.3 Tb(TFA).sub.3 phen phen phen phen phr 0.2 0.2 0.2 0.2 Heat ray absorber Type ITO CWO ITO ITO wt % 0.15 0.05 0.5 0.15 Nitrate component ppm 10 10 10 10 Carbonate component ppm 5 5 5 5 Initial light-emitting properties 210 208 207 510 Light-emitting properties after 180 178 177 480 durability testing Durability evaluation Heat insulation properties (Tts) 74.9 67.4 69.6 74.5

TABLE-US-00004 TABLE 4 Comparative Comparative Example 17 Example 18 Example 19 Example 20 Example 21 Example 7 Example 8 Light- Resin (PVB) Type PVB1-1 PVB1-7 PVB1-2 PVB1-1 PVB2-1 PVB1-5 PVB2-2 emitting phr 100 100 100 100 100 100 100 layer Plasticizer (3GO) phr 40 40 40 40 60 40 60 Eu complex Structure Eu(HFA).sub.3 Eu(HFA).sub.3 Eu(HFA).sub.3 Tb(TFA).sub.3 Eu(HFA).sub.3 Eu(HFA).sub.3 Eu(HFA).sub.3 phen phen phen phen phen phen phen phr 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Nitrate component ppm 10 60 100 10 10 70 70 Carbonate component ppm 5 0 0 5 5 70 70 Adhesive Resin (PVB) Type PVB1-9 PVB1-9 PVB1-9 PVB1-9 PVB1-9 PVB1-9 PVB1-9 layer phr 100 100 100 100 100 100 100 Plasticizer (3GO) phr 40 40 40 40 40 40 40 Nitrate component ppm 0 0 0 0 0 0 0 Carbonate component ppm 40 40 40 40 40 40 40 Initial light-emitting properties 70 69 66 160 72 6 9 Light-emitting properties after durability testing 55 51 40 143 58 2 3 Durability evaluation X X Pummel 4 4 4 4 4 4 4

TABLE-US-00005 TABLE 5 Comparative Comparative Example 22 Example 23 Example 24 Example 25 Example 9 Example 10 Compo- Light-emitting Resin (PVB) Type PVB1-1 PVB1-2 PVB1-1 PVB1-1 PVB1-5 PVB1-5 sition layer phr 100 100 100 100 100 100 Plasticizer (3GO) phr 40 40 40 40 40 40 Eu complex Structure Eu(HFA).sub.3 Eu(HFA).sub.3 Tb(TFA).sub.3 Eu(HFA).sub.3 Eu(HFA).sub.3 Tb(TFA).sub.3 phen phen phen phen phen phen phr 0.5 0.5 0.5 0.5 0.5 0.5 Nitrate component ppm 10 100 10 10 70 70 Carbonate component ppm 5 0 5 5 70 70 Shape-adjusting Resin (PVB) Type PVB1-9 PVB1-9 PVB1-9 PVB1-9 PVB1-9 PVB1-9 layer phr 100 100 100 100 100 100 Plasticizer (3GO) phr 40 40 40 40 40 40 Nitrate component ppm 0 0 0 0 0 0 Carbonate component ppm 40 40 40 40 40 40 Shape Light-emitting Minimum thickness m 100 100 100 100 100 100 layer Maximum thickness m 200 200 200 200 200 200 Thickness etc. of Minimum thickness m 800 800 800 800 800 800 interlayer film Maximum thickness m 1250 1250 1250 1500 1250 1250 Wedge angle mrad 0.45 0.45 0.45 0.7 0.45 0.45 Initial light-emitting properties 70 66 155 72 7 36 Light-emitting properties after durability testing 58 51 141 62 2 11 Durability evaluation X X Evaluation of occurrence of double image

TABLE-US-00006 TABLE 6 Example 26 Example 27 Example 28 Composition First resin layer Resin (PVB) Type PVB1-1 PVB 1-1 PVB1-1 phr 100 100 100 Plasticizer (3GO) phr 40 40 40 Nitrate component ppm 10 10 10 Carbonate component ppm 5 5 5 Sound insulating Resin (PVB) Type PVB2-1 PVB2-1 PVB2-1 layer phr 100 100 100 Plasticizer (3GO) phr 60 60 60 Nitrate component ppm 10 10 10 Carbonate component ppm 5 5 5 Second resin layer Resin (PVB) Type PVB1-1 PVB1-1 PVB1-1 phr 100 100 100 Plasticizer (3GO) phr 40 40 40 Nitrate component ppm 10 10 10 Carbonate component ppm 5 5 5 Light-emitting layer Resin (PVB) Type PVB1-1 PVB1-2 PVB1-1 phr 100 100 100 Plasticizer (3GO) phr 40 40 40 Eu complex Structure Eu(HFA).sub.3 Eu(HFA).sub.3 Tb(TFA).sub.3 phen phen phen phr 0.2 0.2 0.2 Nitrate component ppm 10 100 10 Carbonate component ppm 5 0 5 Shape Structure of First resin First resin First resin interlayer film layer/Sound layer/Sound layer/Sound insulating layer/ Insulating layer/ Insulating layer/ Second resin Second resin Second resin layer/Light- layer/Light- layer/Light- emitting layer emitting layer emitting layer First resin layer Minimum thickness m 350 350 350 Maximum thickness m 525 525 525 Sound insulating Minimum thickness m 100 100 100 layer Maximum thickness m 200 200 200 Second resin layer Minimum thickness m 350 350 350 Maximum thickness m 525 525 525 Light-emitting layer Thickness m 760 760 760 Thickness etc. of Minimum thickness m 1560 1560 1560 interlayer film Maximum thickness m 2010 2010 2010 Wedge angle mrad 0.45 0.45 0.45 Initial light-emitting properties 210 190 500 Light-emitting properties after durability testing 180 130 460 Durability evaluation Evaluation of occurrence of double image Comparative Comparative Example 29 Example 11 Example 12 Composition First resin layer Resin (PVB) Type PVB1-1 PVB1-1 PVB1-1 phr 100 100 100 Plasticizer (3GO) phr 40 40 40 Nitrate component ppm 10 10 10 Carbonate component ppm 5 5 5 Sound insulating Resin (PVB) Type PVB2-1 PVB2-1 PVB2-1 layer phr 100 100 100 Plasticizer (3GO) phr 60 60 60 Nitrate component ppm 10 10 10 Carbonate component ppm 5 5 5 Second resin layer Resin (PVB) Type PVB1-1 PVB1-1 PVB1-1 phr 100 100 100 Plasticizer (3GO) phr 40 40 40 Nitrate component ppm 10 10 10 Carbonate component ppm 5 5 5 Light-emitting layer Resin (PVB) Type PVB1-2 PVB1-5 PVB1-5 phr 100 100 100 Plasticizer (3GO) phr 40 40 40 Eu complex Structure Tb(TFA).sub.3 Eu(HFA).sub.3 Tb(TFA).sub.3 phen phen phen phr 0.2 0.2 0.2 Nitrate component ppm 100 70 70 Carbonate component ppm 0 70 70 Shape Structure of First resin First resin First resin interlayer film layer/Sound layer/Sound layer/Sound insulating layer/ insulating layer/ insulating layer/ Second resin Second resin Second resin layer/Light- layer/Light- layer/Light- emitting layer emitting layer emitting layer First resin layer Minimum thickness m 350 350 350 Maximum thickness m 525 525 525 Sound insulating Minimum thickness m 100 100 100 layer Maximum thickness m 200 200 200 Second resin layer Minimum thickness m 350 350 350 Maximum thickness m 525 525 525 Light-emitting layer Thickness m 760 760 760 Thickness etc. of Minimum thickness m 1560 1560 1560 interlayer film Maximum thickness m 2010 2010 2010 Wedge angle mrad 0.45 0.45 0.45 Initial light-emitting properties 495 12 71 Light-emitting properties after durability testing 440 2 25 Durability evaluation X X Evaluation of occurrence of double image

TABLE-US-00007 TABLE 7 Degree of exposure of interlayer film (area %) Pummel value 90 < Degree of exposure 100 0 85 < Degree of exposure 90 1 60 < Degree of exposure 85 2 40 < Degree of exposure 60 3 20 < Degree of exposure 40 4 10 < Degree of exposure 20 5 5 < Degree of exposure 10 6 2 < Degree of exposure 5 7 Degree of exposure 2 8

INDUSTRIAL APPLICABILITY

[0171] The present invention can provide an interlayer film for laminated glass capable of displaying images with a high luminous intensity when irradiated with a light beam and having excellent durability, and a laminated glass including the interlayer film for laminated glass.

REFERENCE SIGNS LIST

[0172] 1: interlayer film for laminated glass [0173] 11: light-emitting layer [0174] 12: shape-adjusting layer [0175] 2: interlayer film for laminated glass [0176] 21: light-emitting layer [0177] 22: shape-adjusting layer [0178] 23: shape-adjusting layer [0179] 3: interlayer film for laminated glass [0180] 31: light-emitting layer [0181] 32: shape-adjusting layer [0182] 33: shape-adjusting layer