CHLORINATED VINYL CHLORIDE RESIN COMPOSITION FOR WINDOW FRAME, AND WINDOW FRAME MEMBER

Abstract

The present invention provides a chlorinated vinyl chloride resin composition for a window frame having excellent properties including moldability, heat resistance, and impact resistance and capable of preventing or reducing deformation such as warpage or damage even after exposure to sunlight for a long time. Provided is a chlorinated vinyl chloride resin composition for a window frame, containing a chlorinated vinyl chloride resin and an infrared reflective pigment.

Claims

1. A chlorinated vinyl chloride resin composition for a window frame, comprising: a chlorinated vinyl chloride resin; and an infrared reflective pigment.

2. The chlorinated vinyl chloride resin composition for a window frame according to claim 1, wherein the chlorinated vinyl chloride resin has an average degree of polymerization of 500 to 1,000.

3. The chlorinated vinyl chloride resin composition for a window frame according to claim 1, wherein the chlorinated vinyl chloride resin has a chlorine content of 63 to 69% by weight.

4. The chlorinated vinyl chloride resin composition for a window frame according to claim 1, wherein the infrared reflective pigment has an infrared reflectance of 15% or higher.

5. The chlorinated vinyl chloride resin composition for a window frame according to claim 1, comprising the infrared reflective pigment in an amount of 0.1 to 10.0 parts by weight per 100 parts by weight of the chlorinated vinyl chloride resin.

6. The chlorinated vinyl chloride resin composition for a window frame according to claim 1, further comprising an impact resistance modifier.

7. The chlorinated vinyl chloride resin composition for a window frame according to claim 6, wherein the impact resistance modifier is a styrene-conjugated diene copolymer or an acrylic copolymer.

8. The chlorinated vinyl chloride resin composition for a window frame according to claim 6, comprising the impact resistance modifier in an amount of 4.0 to 12.0 parts by weight per 100 parts by weight of the chlorinated vinyl chloride resin.

9. The chlorinated vinyl chloride resin composition for a window frame according to claim 1, further comprising a lubricant.

10. The chlorinated vinyl chloride resin composition for a window frame according to claim 9, wherein the lubricant is at least one selected from the group consisting of an aliphatic hydrogen carbide lubricant, a higher fatty acid lubricant, an aliphatic alcohol lubricant, an aliphatic ester lubricant, and a metal soap lubricant.

11. The chlorinated vinyl chloride resin composition for a window frame according to claim 9, comprising the lubricant in an amount of 2.0 to 6.0 parts by weight per 100 parts by weight of the chlorinated vinyl chloride resin.

12. A window frame member comprising a molded article of the chlorinated vinyl chloride resin composition for a window frame according to claim 1.

Description

DESCRIPTION OF EMBODIMENTS

[0155] The present invention is more specifically described with reference to, but not limited to, the following examples.

EXAMPLE 1

(Preparation of Chlorinated Vinyl Chloride Resin Composition for Window Frame)

[0156] To 100 parts by weight of a chlorinated vinyl chloride resin (chlorine content: 67.3% by weight, average degree of polymerization: 700) were added 0.7 parts by weight of an infrared reflective pigment and 8.0 parts by weight of an impact resistance modifier, and mixed.

[0157] To the mixture were further added a lubricant, a heat stabilizer, and an antioxidant in accordance with Table 1. The materials were uniformly mixed using a super mixer, thereby preparing a chlorinated vinyl chloride resin composition for a window frame.

[0158] The raw materials used are listed below.

(Infrared Reflective Pigment)

[0159] Azo pigment: 1-{4-[(4,5,6,7-Tetrachloro-3-oxoisoindoline-1-ylidene)amino]phenylazo}-2-hydroxy-N-(4′-carboxamide, CHROMOFINE BLACK A1103 available from

[0160] Dainichiseika Color & Chemicals Mfg. Co., Ltd., volume average primary particle size of 0.1 μm, infrared reflectance of 71%

(Impact Resistance Modifier)

[0161] Methyl methacrylate-butadiene-styrene (MBS) copolymer: 20% by weight of methyl methacrylate component, 65% by weight of butadiene component, and 15% by weight of styrene component, B-564 available from Kaneka Corporation, volume average primary particle size of 0.2 μm

(Lubricant)

[0162] Partially saponified ester wax, Licowax OP available from Clariant AG

(Heat stabilizer)

[0163] Dibutyltin mercapto stabilizer, TVS#1380 available from Nitto Kasei Co., Ltd.

(Antioxidant)

[0164] Hindered phenol antioxidant, Irganox1010 available from BASF SE

(Production of Extrusion Molded Article)

[0165] The obtained chlorinated vinyl chloride resin composition for a window frame was fed to a twin-screw counter-rotating conical extruder (“SLM-50” available from Osada Seisakusho) with a diameter of 50 mm. The resin composition was extruded at a resin temperature of 209.0° C., a back pressure of 280.0 kg/cm.sup.2, and an extrusion amount of 25.0 kg/hr. Thus, a molded article as a window frame member was produced.

EXAMPLES 2 TO 29, COMPARATIVE EXAMPLES 1 AND 2

[0166] Chlorinated vinyl chloride resin compositions for a window frame and molded articles were produced as in Example 1, except that a chlorinated vinyl chloride resin, a vinyl chloride resin, an infrared reflective pigment, an infrared absorbing pigment, an impact resistance modifier, an infrared reflectance aid, a lubricant, a heat stabilizer, and an antioxidant used were each of the type and in an amount as shown in Tables 1 and 2.

[0167] The raw materials used are listed below.

[0168] The infrared reflectance of the infrared reflective pigment was measured with an UV-VIS-NIR spectrophotometer available from Shimadzu Corporation. In the case where multiple infrared reflective pigments were contained, the infrared reflectance of the mixture of the infrared reflective pigments was measured. Tables 1 and 2 show the results.

(Infrared Reflective Pigment)

[0169] Perylene pigment: 2,9-Bis[(4-methoxyphenyl)methyl]-anthra[2,1,9-def:6,5,10-D′,E′,F′-]diisoquinoline-1,3,8,10(2H,9H)-tetrone, PALIOGEN Black L 0086 available from BASF SE, volume average primary particle size of 0.1 μm, infrared reflectance of 68%

[0170] Pigment Blue 29: Gunjo 2400 available from Daiichi-Kasei Co., Ltd., silicate compound, volume average primary particle size of 0.5 μm, infrared reflectance of 57%

[0171] Pigment Violet 15: Daiichi Violet available from Daiichi-Kasei Co., Ltd., silicate compound, volume average primary particle size of 0.5 μm, infrared reflectance of 52%

[0172] Titanium oxide: TIPAQUE CR-90 available from Ishihara Sangyo Kaisha, Ltd., volume average primary particle size of 0.25 μm

[0173] Calcium carbonate: Hakuenka CCR available from Shiraishi Kogyo, volume average primary particle size of 0.08 μm

(Infrared Absorbing Pigment)

[0174] Carbon black: RCF #45 available from Mitsubishi Chemical Corporation, volume average primary particle size of 0.03 μm

(Impact Resistance Modifier)

[0175] Acrylonitrile-butadiene-styrene (ABS) copolymer: 35% by weight of acrylonitrile component, 53% by weight of butadiene component, and 12% by weight of styrene component, Blendex338 available from Galata Chemicals, volume average primary particle size of 1.0 μm

[0176] Methyl methacrylate-butadiene-styrene (MBS) copolymer: 25% by weight of methyl methacrylate component, 50% by weight of butadiene component, and 25% by weight of styrene component, MB-838A available from LG Chem Ltd., volume average primary particle size of 0.2 μm

[0177] Methyl methacrylate-butadiene-styrene (MBS) copolymer: 10% by weight of methyl methacrylate component, 80% by weight of butadiene component, and 10% by weight of styrene component, BTA751 available from The Dow Chemical

[0178] Company, volume average primary particle size of 0.2 μm [0179] <Evaluation>

[0180] The following evaluations were performed on the chlorinated vinyl chloride resin compositions for a window frame and molded articles obtained in the examples and comparative examples. Tables 1 and 2 show the results.

(Evaluation on Chlorinated Vinyl Chloride Resin Composition for Window Frame)

[0181] <Mechanical properties (Izod impact strength, tensile strength, tensile modulus of elasticity, thermal deformation temperature, MFR)>

[0182] Each of the obtained chlorinated vinyl chloride resin compositions for a window frame was fed into a roll mill with two 8-inch rolls. The resin composition was kneaded at 205° C. for three minutes and formed into 1.0-mm-thick sheets. The obtained sheets were layered on top of each other, preheated with a press at 205° C. for three minutes, and then pressurized for four minutes. Thus, a press plate having a thickness of 3 mm was obtained. A specimen was cut out from the obtained press plate by machine processing. The Izod impact strength was measured in accordance with ASTM D-256 and the tensile strength and tensile modulus of elasticity were measured in accordance with ASTM D-638 using this specimen.

[0183] The thermal deformation temperature was measured at a load of 186 N/cm.sup.2 in accordance with ASTM D-648. Before measurement of the thermal deformation temperature, the press plate was annealed in a gear oven at 100° C. for 24 hours.

[0184] The MFR was measured in accordance with JIS K7210.

(Evaluation on Molded Article)

[0185] <Heat accumulation>

[0186] A specimen having a width of 10 mm and a length of 200 mm was cut out from each of the obtained molded articles.

[0187] The specimen was irradiated with infrared rays using a three-bulb infrared lamp (F-2B available from Kett

[0188] Electric Laboratory) as a light source at a distance from the light source to the specimen of 30 cm. The specimen was irradiated with infrared rays for 10 minutes, and the temperature of the specimen was measured every minute from the start of the irradiation using an infrared thermal imaging camera (CPE-E4 available from Flir Systems, Inc.). [0189] <Infrared reflectance>

[0190] The infrared reflectance in the infrared region (700 nm to 1,700 nm) of each of the obtained molded articles was measured with a spectrophotometer. The infrared reflectance was calculated based on the integrals within an arbitrary range of reflectance and transmittance curves. In the calculation, the equation: reflectance+transmittance+absorbance=100% was satisfied. [0191] <Surface roughness>

[0192] The surface roughness Ra of each of the obtained molded articles was measured with a surface roughness meter (available from Mitsutoyo Corporation). [0193] <Weather resistance>

[0194] The obtained molded articles were each placed in an UV long-life fade meter (available from Suga Test Instruments Co., Ltd.) and the test was carried out for 500 hours. The color change before and after the test was observed using a colorimeter NR-3000 available from Nippon Denshoku Industries Co., Ltd. The color difference iE value was evaluated based on the following criteria. [0195] oo (Excellent): Less than ΔE 2.0 [0196] o (Good): ΔE 2.0 or more and less than 6.0 [0197] Δ (Fair): ΔE 6.0 or more and less than 15.0 [0198] × (Poor): ΔE 15.0 or more [0199] <Chemical resistance>

[0200] The obtained molded articles were each immersed in nitric acid having a concentration of 70% by weight for three weeks. The color change before and after the immersion was observed using a colorimeter NR-3000 available from Nippon Denshoku Industries Co., Ltd. The color difference iE value was evaluated based on the following criteria. [0201] oo (Excellent): Less than ΔE 8.0 [0202] o (Good): ΔE 8.0 or more and less than 15.0 [0203] Δ (Fair): ΔE 15.0 or more and less than 30.0 [0204] × (Poor): ΔE 30.0 or more

TABLE-US-00001 TABLE 1 Example 1 2 3 4 5 6 7 8 Formulation Chlorinated Amount 100 100 100 100 100 100 100 100 of resin vinyl Average degree of 700 400 1200 700 700 700 700 700 composition chloride polymerization (parts by resin Chlorine content (wt %) 67.3 67.3 67.3 62.0 70.0 67.3 67.3 67.3 weight) Proportion of structural unit (a) (mol %) Proportion of structural unit (b) (mol %) Proportion of structural unit (c) (mol %) Vinyl Amount (parts by weight) — — — — — — — — chloride Degree of polymerization — — — — — — — — resin Chlorine content (wt %) — — — — — — — — Infrared Azo pigment 0.7 0.7 0.7 0.7 0.7 — — 0.7 reflective Perylene pigment — — — — — — — — pigment Pigment Blue 29 — — — — — 0.7 — — Pigment Violet 15 — — — — — — 0.7 — Titanium oxide — — — — — — — 4.0 Calcium carbonate — — — — — — — — Infrared reflectance (%) 71 71 71 71 71 57 52 80 Infrared Carbon black — — — — — — — — absorbing pigment Impact MBS (Butadiene 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 resistance component of 65 wt %) modifier MBS (Butadiene — — — — — — — — component of 50 wt %) MBS (Butadiene — — — — — — — — component of 80 wt %) ABS — — — — — — — — Lubricant Partially saponified ester 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 wax Heat Dibutyltin mercapto 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 stabilizer stabilizer Antioxidant Hindered phenol 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 antioxidant Evaluation Izod impact strength (J/m) 400 240 580 480 360 400 400 370 (resin Tensile strength (MPa) 49.0 48.5 50.0 45.2 53.0 49.3 49.1 48.6 composition) Tensile modulus of elasticity (MPa) 2750 2600 2820 2510 2880 2720 2740 2620 Thermal deformation temperature (° C.) 102 101 102 90 110 101 102 101 MFR (g/10 min) 2.5 3.3 0.8 5.8 1.2 2.5 2.5 2.3 Evaluation Heat 2 minutes later 45 44 45 45 45 50 52 42 (molded accumulation 5 minutes later 55 55 56 55 55 61 63 52 article) (° C.) 10 minutes later 60 60 61 59 60 66 67 56 Infrared reflectance (%) 20 19 18 21 20 10 8 30 Surface roughness = Rmax (μm) 1.2 0.2 6.5 0.6 5.9 1.3 1.1 1.5 Weather Evaluation Δ Δ Δ Δ Δ ◯◯ ◯ ◯ resistance ΔE 7.9 7.7 8.1 7.4 9.2 1.8 2.2 4.6 Chemical Evaluation ◯ Δ ◯ Δ ◯ ◯ ◯ ◯ resistance ΔE 14.8 16.3 12.2 19.2 10.5 8.8 11.4 12.8 Example 9 10 11 12 13 14 15 Formulation Chlorinated Amount 100 100 100 100 100 100 100 of resin vinyl Average degree of 700 700 700 700 700 700 700 composition chloride polymerization (parts by resin Chlorine content (wt %) 67.3 67.3 67.3 67.3 67.3 67.3 67.3 weight) Proportion of structural unit (a) (mol %) Proportion of structural unit (b) (mol %) Proportion of structural unit (c) (mol %) Vinyl Amount (parts by weight) — — — — — — — chloride Degree of polymerization — — — — — — — resin Chlorine content (wt %) — — — — — — — Infrared Azo pigment 0.7 0.7 0.7 0.7 0.7 0.7 0.7 reflective Perylene pigment — — — — — — — pigment Pigment Blue 29 — — — — — — — Pigment Violet 15 — — — — — — — Titanium oxide — 0.5 10.0 — — — — Calcium carbonate 4.0 — — — — — — Infrared reflectance (%) 73 75 86 71 71 71 71 Infrared Carbon black — — — — — — — absorbing pigment Impact MBS (Butadiene 8.0 8.0 8.0 — — 2.0 14.0 resistance component of 65 wt %) modifier MBS (Butadiene — — — — — — — component of 50 wt %) MBS (Butadiene — — — — — — — component of 80 wt %) ABS — — — — 8.0 — — Lubricant Partially saponified ester 4.0 4.0 4.0 4.0 4.0 4.0 4.0 wax Heat Dibutyltin mercapto 2.0 2.0 2.0 2.0 2.0 2.0 2.0 stabilizer stabilizer Antioxidant Hindered phenol 0.5 0.5 0.5 0.5 0.5 0.5 0.5 antioxidant Evaluation Izod impact strength (J/m) 330 390 340 25 420 120 650 (resin Tensile strength (MPa) 48.5 49.0 47.2 52.1 48.8 51.1 45.0 composition) Tensile modulus of elasticity (MPa) 2610 2710 2530 2850 2760 2800 2490 Thermal deformation temperature (° C.) 102 102 101 105 102 103 100 MFR (g/10 min) 2.4 2.5 2.3 2.8 2.6 2.7 2.2 Evaluation Heat 2 minutes later 44 44 41 45 45 45 45 (molded accumulation 5 minutes later 54 54 51 56 55 55 55 article) (° C.) 10 minutes later 58 57 54 61 60 61 60 Infrared reflectance (%) 22 24 40 18 20 19 20 Surface roughness = Rmax (μm) 1.8 1.4 1.7 0.9 1.4 1.1 2.0 Weather Evaluation Δ Δ ◯◯ Δ Δ Δ Δ resistance ΔE 8 6.3 1.5 6.5 8.8 7.2 9.5 Chemical Evaluation ◯ ◯ ◯ ◯◯ ◯ ◯◯ Δ resistance ΔE 13.6 13.7 11.3 4.9 14.1 7.4 22.2

TABLE-US-00002 TABLE 2 Example 16 17 18 19 20 21 22 23 Formulation Chlorinated Amount 100 100 100 100 100 100 100 100 of resin vinyl Average degree of 700 700 700 700 700 700 700 700 composition chloride polymerization (parts by resin Chlorine content (wt %) 67.3 67.3 67.3 67.3 67.3 67.3 67.3 67.3 weight) Proportion of structural unit (a) (mol %) Proportion of structural unit (b) (mol %) Proportion of structural unit (c) (mol %) Vinyl Amount (parts by weight) — — — — — — — — chloride Degree of polymerization — — — — — — — — resin Chlorine content (wt %) — — — — — — — — Infrared Azo pigment 0.7 0.7 0.2 9.8 — — — — reflective Perylene pigment — — — — 0.7 — — — pigment Pigment Blue 29 — — — — — 0.2 9.8 — Pigment Violet 15 — — — — — — — 0.2 Titanium oxide — — — — — — — — Calcium carbonate — — — — — — — — Infrared reflectance (%) 71 71 71 71 68 57 57 52 Infrared Carbon black — — — — — — — — absorbing pigment Impact MBS (Butadiene 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 resistance component of 65 wt %) modifier MBS (Butadiene — — — — — — — — component of 50 wt %) MBS (Butadiene — — — — — — — — component of 80 wt %) ABS — — — — — — — — Lubricant Partially saponified ester 1.0 8.0 4.0 4.0 4.0 4.0 4.0 4.0 wax Heat Dibutyltin mercapto 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 stabilizer stabilizer Antioxidant Hindered phenol 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 antioxidant Evaluation Izod impact strength (J/m) 410 370 400 370 400 420 370 430 (resin Tensile strength (MPa) 48.9 48.3 49.1 48.3 49.0 49.3 49.5 49.1 composition) Tensile modulus of elasticity (MPa) 2710 2690 2750 2590 2750 2680 2740 2690 Thermal deformation temperature (° C.) 102 101 102 100 102 100 103 101 MFR (g/10 min) 1.8 3.6 2.5 3.3 2.5 2.5 2.3 2.5 Evaluation Heat 2 minutes later 45 44 53 38 46 57 44 57 (molded accumulation 5 minutes later 56 55 64 48 56 68 54 59 article) (° C.) 10 minutes later 60 60 68 50 61 73 58 73 Infrared reflectance (%) 20 19 7 48 17 9 24 7 Surface roughness = Rmax (μm) 0.2 5 0.5 3 1.3 1.2 2.8 1 Weather Evaluation Δ Δ Δ ◯ Δ ◯◯ ◯◯ ◯ resistance ΔE 8.2 7.8 11.0 3.5 14.5 1.9 0.7 3.5 Chemical Evaluation ◯ Δ Δ ◯ Δ ◯ ◯◯ ◯ resistance ΔE 13.2 16.5 17.2 8.5 27.9 14.2 7.9 14.9 Comparative Example Example 24 25 26 27 28 29 1 2 Formulation Chlorinated Amount 100 100 100 100 100 100 100 — of resin vinyl Average degree of 700 700 700 700 700 700 700 — composition chloride polymerization (parts by resin Chlorine content (wt %) 67.3 67.3 67.3 67.3 67.3 67.3 67.3 — weight) Proportion of structural unit (a) (mol %) Proportion of structural unit (b) (mol %) Proportion of structural unit (c) (mol %) Vinyl Amount (parts by weight) — — — — — — — 100 chloride Degree of polymerization — — — — — — — 700 resin Chlorine content (wt %) — — — — — — — 56.7 Infrared Azo pigment — — — — 0.7 0.7 — 0.7 reflective Perylene pigment — — — — — — — — pigment Pigment Blue 29 — 0.7 0.7 0.7 — — — — Pigment Violet 15 9.8 — — — — — — — Titanium oxide — 4.0 0.5 10.0 — — — — Calcium carbonate — — — — — — — — Infrared reflectance (%) 52 69 61 78 71 71 — 71 Infrared Carbon black — — — — — — 0.7 — absorbing pigment Impact MBS (Butadiene 8.0 8.0 8.0 8.0 — — 8.0 8.0 resistance component of 65 wt %) modifier MBS (Butadiene — — — — 8.0 — — — component of 50 wt %) MBS (Butadiene — — — — — 8.0 — — component of 80 wt %) ABS — — — — — — — — Lubricant Partially saponified ester 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 wax Heat Dibutyltin mercapto 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 stabilizer stabilizer Antioxidant Hindered phenol 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 antioxidant Evaluation Izod impact strength (J/m) 380 390 400 370 200 620 400 560 (resin Tensile strength (MPa) 49.3 49.8 49.3 50.0 49.5 48.8 49.1 40.3 composition) Tensile modulus of elasticity (MPa) 2760 2750 2720 2790 2710 2680 2730 2420 Thermal deformation temperature (° C.) 104 103 101 105 101 102 101 69 MFR (g/10 min) 2.3 2.1 2.5 2 3.5 0.7 2.5 23.9 Evaluation Heat 2 minutes later 44 45 49 43 46 45 77 46 (molded accumulation 5 minutes later 55 56 58 52 54 56 84 54 article) (° C.) 10 minutes later 60 61 64 57 61 61 90 59 Infrared reflectance (%) 19 18 12 28 20 19 2 20 Surface roughness = Rmax (μm) 2.6 1.7 1.4 2.1 1.1 2.1 1.3 0.5 Weather Evaluation ◯◯ ◯◯ ◯◯ ◯◯ Δ Δ ◯◯ Δ resistance ΔE 1.7 0.9 1.1 0.3 7.2 9.1 0.3 6.5 Chemical Evaluation ◯ ◯◯ ◯◯ ◯◯ ◯ Δ ◯ X resistance ΔE 10.1 7.1 7.8 6.6 11.1 17.2 11.1 33.5

INDUSTRIAL APPLICABILITY

[0205] The present invention can provide a chlorinated vinyl chloride resin composition for a window frame having excellent properties including moldability, heat resistance, and impact resistance and capable of preventing or reducing deformation such as warpage or damage even after exposure to sunlight for a long time.