COLOR MIGRATION BLOCKING COMPOSITION, COLOR MIGRATION BLOCKING FILM, COLOR MIGRATION BLOCKING LAMINATE AND COMPOSITE FABRIC COMPRISING THE SAME, AND APPLICATIONS THEREOF

Abstract

The present invention provides a color migration blocking composition, comprising: 15 parts to 45 parts by weight of a phenoxy resin; 5 parts to 40 parts by weight of an elastomer-modified epoxy resin; 1.5 parts to 7.0 parts by weight of a curing agent; and 30 parts to 65 parts by weight of a solvent, based on the total weight of the color migration blocking composition. The color migration blocking film formed by the color migration blocking composition has a good effect on blocking color migration and a good adhesion strength; therefore, when a color migration blocking laminate comprising the color migration blocking film is applied to a fabric, not only the unnecessary discoloration can be avoided and the softness of the fabric can be maintained, but also the processing cost is reduced, thereby promoting the value of the product.

Claims

1. A color migration blocking composition, comprising: 15 parts to 45 parts by weight of a phenoxy resin; 5 parts to 40 parts by weight of an elastomer-modified epoxy resin; 1.5 parts to 7.0 parts by weight of a curing agent; and 30 parts to 65 parts by weight of a solvent, based on 100 parts by weight of the color migration blocking composition.

2. The color migration blocking composition as claimed in claim 1, wherein the phenoxy resin has a weight average molecular weight of 20,000 to 80,000.

3. The color migration blocking composition as claimed in claim 1, wherein the elastomer-modified epoxy resin comprises: a dimer acid-modified epoxy resin, a thermoplastic polyurethane-modified epoxy resin, a butadiene-acrylonitrile liquid rubber-modified epoxy resin or any combinations thereof.

4. The color migration blocking composition as claimed in claim 3, wherein the dimer acid-modified epoxy resin has an epoxide equivalent weight of 500 g/eq to 1500 g/eq.

5. The color migration blocking composition as claimed in claim 3, wherein the thermoplastic polyurethane-modified epoxy resin has an epoxide equivalent weight of 200 g/eq to 700 g/eq.

6. The color migration blocking composition as claimed in claim 3, wherein the butadiene-acrylonitrile liquid rubber-modified epoxy resin has an epoxide equivalent weight of 300 g/eq to 1400 g/eq.

7. The color migration blocking composition as claimed in claim 1, wherein the curing agent comprises an isocyanate type curing agent, an amine type curing agent, or a combination thereof.

8. The color migration blocking composition as claimed in claim 1, wherein the solvent comprises a first solvent and a second solvent; the first solvent is a polar aprotic solvent, and the second solvent is a hydrocarbon solvent.

9. A color migration blocking film, which is formed by the color migration blocking composition as claimed in claim 1.

10. A color migration blocking laminate, comprising: a first polyurethane film, the color migration blocking film as claimed in claim 9, a thermoplastic polyurethane film, and a thermoplastic polyurethane hot melt film; wherein the color migration blocking film and the thermoplastic polyurethane film are inserted between the first polyurethane film and the thermoplastic polyurethane hot melt film.

11. The color migration blocking laminate as claimed in claim 10, wherein the color migration blocking laminate comprises sequentially from top to bottom: the first polyurethane film, the color migration blocking film, the thermoplastic polyurethane film, and the thermoplastic polyurethane hot melt film.

12. The color migration blocking laminate as claimed in claim 10, wherein the color migration blocking laminate further comprises a polyurethane adhesive layer, the polyurethane adhesive layer is inserted between the first polyurethane film and the color migration blocking film, or the polyurethane adhesive layer is inserted between the first polyurethane film and the thermoplastic polyurethane film.

13. The color migration blocking laminate as claimed in claim 12, wherein the color migration blocking laminate comprises sequentially from top to bottom: the first polyurethane film, the polyurethane adhesive layer, the thermoplastic polyurethane film, the color migration blocking film, and the thermoplastic polyurethane hot melt film.

14. A composite fabric, comprising the color migration blocking laminate as claimed in claim 10 and a fabric; and the fabric is adhered to the thermoplastic polyurethane hot melt film comprised in the color migration blocking laminate.

15. A use of the composite fabric as claimed in claim 14, wherein the composite fabric is applied to shoe materials, clothes or cloth labels.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0041] FIG. 1 is a schematic diagram of the side sectional view of the color migration blocking laminate 1-A of the present invention.

[0042] FIG. 2 is a schematic diagram of the side sectional view of the color migration blocking laminate 1-B of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0043] Examples and Comparative Examples are given below to illustrate the details of the present invention, and one person skilled in the art can easily realize the advantages and effects of the present invention from the description, and make various modifications and variations in order to practice or apply the present invention without departing from the spirit of the present invention. Raw materials:

[0044] (1) Phenoxy resin: purchased from Mitsubishi Chemical, Japan; product number: jER 1256; Mw: 51,000; [0045] (2) Dimer acid-modified epoxy resin: purchased from CVC Thermoset Specialties, Inc.; product number: HyPox DA323; the amount of elastomer: 40 wt %; EEW: 660 g/eq;

[0046] (3) TPU-modified epoxy resin: purchased from CVC Thermoset Specialties. Inc.; product number: HyPox UA10; the amount of elastomer: 12 wt %; EEW: 215 g/eq;

[0047] (4) Butadiene-acrylonitrile liquid rubber-modified epoxy resin: purchased from CVC Thermoset Specialties, Inc.; product number: HyPox RA 1340; the amount of elastomer: 40 wt %; EEW: 350 g/eq;

[0048] (5) Curing agent: aliphatic polyisocyanate, purchased from Covestro AG; product number: Desmodur N-70;

[0049] (6) MEK: purchased from Nanpao Resins Chemical Group; [0050] (7) PMA: purchased from LyondellBasell Industries N.V.; [0051] (8) Aromatic 100: purchased from CPC Corporation, Taiwan.

[0052] Color Migration Blocking Composition

Examples 1 to 4

[0053] The color migration blocking compositions of Examples 1 to 4 were respectively prepared according to the ratios (in wt %) shown in Table 1. First, PMA, MEK and Aromatic 100 were homogeneously mixed in a container according to the ratios shown in Table 1. After that, the phenoxy resin was added into a container at the ratio shown in Table 1, and continuously stirred until the phenoxy resin completely dissolved; then the elastomer-modified epoxy resin (i.e., dimer acid-modified epoxy resin, TPU-modified epoxy resin, or butadiene-acrylonitrile liquid rubber-modified epoxy resin) was added into the container at the ratio shown in Table 1 to obtain a mixed solution, and the mixed solution was stirred until clear and transparent. Then the curing agent was added at the ratio shown in Table 1 to obtain the color migration blocking composition. The color migration blocking composition had a viscosity of about 5000 centipoises (cps). The main differences of Examples 1 to 4 were the components comprised in the compositions and the amounts thereof.

[0054] Color Migration Blocking Film

[0055] The color migration blocking compositions of Examples 1 to 4 were respectively coated on a releasing film, and dried at 90° C., to obtain the color migration blocking films 1-1 to 4-1. All the color migration blocking films 1-1 to 4-1 had an average thickness of about 0.03 mm.

TABLE-US-00001 TABLE 1 Ratios of the components in the color migration blocking compositions of Examples 1 to 4 and the color migration blocking films thereof Composition number Example 1/ Example 2/ Example 3/ Example 4/ Color Color Color Color migration migration migration migration blocking blocking blocking blocking film film film film Film number 1-1 (wt %) 2-1 (wt %) 3-1 (wt %) 4-1 (wt %) Phenoxy resin 39.1 33.6 33.6 33.6 Dimer acid- 8.7 13.3 0 0 modified epoxy resin TPU- 0 0 13.3 0 modified epoxy resin Butadiene- 0 0 0 13.3 acrylonitrile liquid rubber- modified epoxy resin Curing agent 4.3 4.4 4.4 4.4 MEK 28.7 29.2 29.2 29.2 PMA 7.0 7.1 7.1 7.1 Aromatic 100 12.2 12.4 12.4 12.4

[0056] Color Migration Blocking Laminates

[0057] Color Migration Blocking Laminate 1-A (L1-A)

[0058] As shown in FIG. 1, first, the color migration blocking film 20 was directly laminated to one side of the first polyurethane film 10. After that, the TPU film 30 was directly adhered to the other side of the color migration blocking film 20. At last, the TPU hot melt film 40 was adhered to the other side of the TPU film 30, to obtain the color migration blocking laminate 1-A (i.e., the color migration blocking laminate 1 shown in FIG. 1).

[0059] The information of each layer comprised in the color migration blocking laminate 1-A was as below:

[0060] (1) First polyurethane film 10: purchased from Hsin-Li Chemical Industrial Corp.; thickness: 0.05 mm; color: white;

[0061] (2) Color migration blocking film 20: the color migration blocking film 1-1 formed by the color migration blocking composition of Example 1; thickness: 0.03 mm;

[0062] (3) TPU film 30: purchased from Jah Yih Enterprise Co., Ltd.; product number: HS; thickness: 0.10 mm;

[0063] (4) TPU hot melt film 40: purchased from Jah Yih Enterprise Co., Ltd.; product number: HM; thickness: 0.20 mm.

[0064] Color Migration Blocking Laminate 2-A (L2-A)

[0065] The color migration blocking laminate 2-A was prepared by the steps the same as those in the preparation of the color migration blocking laminate 1-A, except the color migration blocking film 1-1 in the color migration blocking laminate 1-A was changed to the color migration blocking film 2-1 formed by the color migration blocking composition of Example 2.

[0066] Reference Laminate 1-A (RL1-A)

[0067] The reference laminate 1-A was prepared by the steps the same as those in the preparation of the color migration blocking laminate 1-A, except the color migration blocking film 1-1 in the color migration blocking laminate 1-A was skipped, and the TPU film was directly adhered to one side of the first polyurethane film.

[0068] Color Migration Blocking Laminate 1-B (L1-B)

[0069] As shown in FIG. 2, first, a polyurethane adhesive solution was coated by knife coating and dried to form a polyurethane adhesive layer 50 on one side of the first polyurethane film 10. After that, the TPU film 30 was directly laminated to the other side of the polyurethane adhesive layer 50. Then the color migration blocking film 20 was adhered to the other side of the TPU film 30. At last, the TPU hot melt film 40 was adhered to the other side of the color migration blocking film 20, to obtain the color migration blocking laminate 1-B (i.e., the color migration blocking laminate 1′ shown in FIG. 2).

[0070] The information of each layer comprised in the color migration blocking laminate 1-B was as below:

[0071] (1) First polyurethane film 10: purchased from Hsin-Li Chemical Industrial Corp.; thickness: 0.04 mm; color: white;

[0072] (2) Polyurethane adhesive layer 50: purchased from Hsin-Li Chemical Industrial Corp.; thickness: 0.01 mm;

[0073] (3) TPU film 30: purchased from Jah Yih Enterprise Co., Ltd.; product number: HS; thickness: 0.10 mm;

[0074] (4) Color migration blocking film 20: the color migration blocking film 1-1 formed by the color migration blocking composition of Example 1; thickness: 0.03 mm;

[0075] (5) TPU hot melt film 40: purchased from Jah Yih Enterprise Co., Ltd.; product number: HM; thickness: 0.20 mm.

[0076] Color Migration Blocking Laminate 2-B (L2-B)

[0077] The color migration blocking laminate 2-B was prepared by the steps the same as those in the preparation of the color migration blocking laminate 1-B, except the color migration blocking film 1-1 in the color migration blocking laminate 1-B was changed to the color migration blocking film 2-1 formed by the color migration blocking composition of Example 2.

[0078] Color Migration Blocking Laminate 3-B (L3-B)

[0079] The color migration blocking laminate 3-B was prepared by the steps the same as those in the preparation of the color migration blocking laminate 1-B, except the color migration blocking film 1-1 in the color migration blocking laminate 1-B was changed to the color migration blocking film 3-1 formed by the color migration blocking composition of Example 3.

[0080] Color Migration Blocking Laminate 4-B (L4-B)

[0081] The color migration blocking laminate 4-B was prepared by the steps the same as those in the preparation of the color migration blocking laminate 1-B, except the color migration blocking film 1-1 in the color migration blocking laminate 1-B was changed to the color migration blocking film 4-1 formed by the color migration blocking composition of Example 4.

[0082] Reference Laminate 1-B (RL1-B)

[0083] The reference laminate 1-B was prepared by the steps the same as those in the preparation of the color migration blocking laminate 1-B, except the color migration blocking film 1-1 in the color migration blocking laminate 1-B was omitted, and the TPU hot melt film was directly adhered to one side of the TPU film.

[0084] Characteristic Analysis of Color Migration Blocking Laminates

[0085] L1-A, L2-A, RL1-A, and L1-B, L2-B, L3-B, L4-B, RL1-B were sequentially analyzed by the following experimental tests. Based on the conduct of meaningful experiments in the characteristic analysis, all the laminates were analyzed by the same experimental method. From above, it was clear that the main characteristic differences between each color migration blocking laminate and reference laminate (i.e., the main differences between L1-A, L2-A and RL1-A; and, the main differences between L1-B, L2-B, L3-B, L4-B and RL1-B) came from the differences that the laminates comprised the color migration blocking film or not.

[0086] Experimental Test 1: Vamp Flex Test L1-A, L2-A, RL1-A, and L1-B, L2-B, L3-B, L4-B, and RL1-B were respectively tested at 25° C. by the standard vamp flex test using SATRA TM25, and the results were listed in Table 2.

TABLE-US-00002 TABLE 2 Results of Vamp Flex Test from L1-A, L2-A, RL1-A, L1-B, L2-B, L3-B, L4-B, and RL1-B Sample number Number of flexing cycles (cycle) L1-A >100,000 L2-A >100,000 RL1-A >100,000 L1-B >110,000 L2-B >110,000 L3-B >110,000 L4-B >110,000 RL1-B >110,000

[0087] Experimental Test 2: Color Migration Blocking Ability Test

[0088] Each of the following laminates was respectively adhered to the same red polyester fabric by heat pressing to form a variety of synthetic leathers. The synthetic leathers were assessed by both the Nike Test G59 rubber accelerated ageing test under Condition A, and the Adidas GE-08 hydrolysis test under Condition B, and then assessed by EN ISO 105-A3 grayscale test for assessing the staining level of the white first polyurethane film of each synthetic leather under different conditions.

[0089] The results of the grayscale test could be assessed in nine grades: 5, 4.5, 4, 3.5, 3, 2.5, 2, 1.5, and 1. Grade 5 indicated that the observer did not see any staining on the first polyurethane film by naked eyes; on the contrary, grade 1 indicated that the observer saw high-level staining on the first polyurethane film by naked eyes.

[0090] Condition A: Air-Circulating Oven

[0091] First, the synthetic leathers obtained from all laminates and reference laminates were fixed in an air-circulating oven, the temperature of the oven was maintained at 70° C., and each of the synthetic leathers should not be contacted with each other. After that, the fabrics were taken out every 24 hours for 7 days. The staining level of the first polyurethane film of each synthetic leather was observed by the grayscale test, and the assessment results of the synthetic leathers comprising L1-A, RL1-A were recorded in Table 3, and the assessment results of the synthetic leathers comprising L1-B, L2-B, L3-B, L4-B, and RL1-B were recorded in Table 4-1.

[0092] Condition B: Humidity Chamber

[0093] First, the synthetic leathers obtained from all laminates and reference laminates were fixed in a humidity chamber, in which the temperature of the humidity chamber was maintained at 70° C., and the humidity of the humidity chamber was maintained at 95% RH. After that, the synthetic leathers were taken out every 24 hours for 7 days. The staining level of the first polyurethane film of each synthetic leather was observed by the grayscale test, the assessment results of the synthetic leathers comprising L1-A and RL1-A were recorded in Table 3, and the assessment results of the synthetic leathers comprising L1-B, L2-B, L3-B, L4-B, and RL1-B were recorded in Table 4-2.

TABLE-US-00003 TABLE 3 Results of color migration blocking ability of L1-A and RL1-A L1-A RL1-A Grayscale Grayscale Grayscale Grayscale value under value under value under value under Day Condition A Condition B Condition A Condition B Day 1 5 5 3.5 3 Day 2 5 4.5 3.5 2.5 Day 3 5 4.5 3 2.5 Day 4 4.5 4.5 3 2 Day 5 4.5 4 2.5 2 Day 6 4.5 4 2.5 1.5 Day 7 4.5 4 2.5 1.5

TABLE-US-00004 TABLE 4-1 Results of color migration blocking ability of L1-B, L2-B, L3-B, L4-B and RL1-B under Condition A Grayscale value Condition A L1-B L2-B L3-B L4-B RL1-B Day 1 5 5 5 4.5 3.5 Day 2 5 5 5 4.5 3.5 Day 3 5 5 4.5 4 3 Day 4 5 5 4.5 4 2.5 Day 5 5 5 4.5 4 2.5 Day 6 4.5 5 4 3.5 2 Day 7 4.5 4.5 4 3.5 2

TABLE-US-00005 TABLE 4-2 Results of color migration blocking ability of L1-B, L2-B, L3-B, L4-B and RL1-B under Condition B Grayscale value Condition B L1-B L2-B L3-B L4-B RL1-B Day 1 5 5 5 4.5 3.5 Day 2 5 5 5 4.5 3 Day 3 5 5 4.5 4 2.5 Day 4 4.5 5 4.5 4 2 Day 5 4.5 4.5 4.5 3.5 1.5 Day 6 4.5 4.5 4 3.5 1.5 Day 7 4.5 4.5 4 3.5 1.5

[0094] Discussion of Experimental Test Results

[0095] From the results of vamp flex test in Table 2, it was clear that no matter whether L1-A and L1-B comprised a color migration blocking film or not, their flex resistance was equivalent to that of RL1-A which did not comprise a color migration blocking film. Similarly, L1-B to L4-B also had a flex resistance equivalent to that of RL1-B which did not comprise a color migration blocking film. Therefore, these tests proved that the color migration blocking film of the present invention had good flex resistance. In addition, from the test results of L1-A and L1-B, it was clear that no matter whether the polyurethane adhesive layer was comprised in the color migration blocking laminate of the present invention or not, the layers of the laminate, even after the vamp flexing test for more than 100 thousand flexing cycles, were maintained integral and inseparable. The test result proved that the color migration blocking film introduced in the laminate provided very good adhesion strength.

[0096] From the results in Table 3, Table 4-1 and Table 4-2, it was clear that the color migration blocking film of the present invention had a good ability for blocking color migration. Thus, in a laminate simultaneously comprising the first polyurethane film (as the top layer of the synthetic leather) and the color migration blocking film of the present invention, after the synthetic leather was adhered to the fabric by heat pressing to form a synthetic leather, the migration of the dye colorant from the fabric at the bottom to the top layer of the synthetic leather could be prevented.

[0097] From the above test results, it is clear that the color migration blocking composition of the present invention comprising a phenoxy resin and an elastomer-modified epoxy resin is very compatible with either polyurethane film or TPU film, so the color migration blocking film formed by the composition has good adhesion strength with the first polyurethane film, the TPU film and the TPU hot melt film, and has an ability to successfully block the migration of the colorant from the fabric at the bottom to the first polyurethane film at the top, thereby promoting the application value of the color migration blocking film of the present invention, the color migration blocking laminate and the composite fabric comprising the film.

[0098] The above examples are used to illustrate the present invention, not intended to limit the claims of the present invention. The variations and modifications not departing from the essence of the present invention should be considered to fall within the scope of the present invention.