KR-20260065524-A - FILM-FORMING COMPOSITION AND FILM-COATED FABRIC FORMED FROM THE SAME

Abstract

The film-forming composition of the present invention comprises a copolyester, a methyl etherified amino resin, a bonding agent, and an organic solvent. The copolyester is formed by copolymerizing terephthalic acid, a saturated aliphatic dicarboxylic acid, ethylene glycol, and a saturated aliphatic diol, and has a glass transition temperature in the range of -20°C to 20°C. The bonding agent is selected from the group consisting of p-toluenesulfonic acid and dodecylbenzenesulfonic acid. Additionally, a film-coated fabric formed from the film-forming composition is provided.

Inventors

• 천 쿠오-친
• 후앙 성-윈
• 창 리-순
• 천 춘-안
• 추앙 위-핑
• 천 치아-린

Assignees

• 쥐-펀 인더스트리얼 코포레이션

Dates

Publication Date

20260508

Application Date

20251024

Priority Date

20241030

Claims (12)

1. A copolyester formed by copolymerizing terephthalic acid, a saturated aliphatic dicarboxylic acid, ethylene glycol, and a saturated aliphatic diol, having a glass transition temperature in the range of -20°C to 20°C; methyl etherified amino resin; A coalescing agent selected from the group consisting of p-toluenesulfonic acid and dodecylbenzenesulfonic acid; and Organic solvent A film-forming composition comprising
2. In paragraph 1, A film-forming composition in which the above copolyester has a glass transition temperature in the range of -15°C to 15°C.
3. In paragraph 1, A film-forming composition in which the above-mentioned saturated aliphatic dicarboxylic acid is selected from the group consisting of adipic acid, sebacic acid, and combinations thereof.
4. In paragraph 1, A film-forming composition in which the saturated aliphatic diol is selected from the group consisting of diethylene glycol, neopentyl glycol, 2,2,4-trimethyl-1,3-pentanediol (TMPD) and combinations thereof.
5. In paragraph 1, A film-forming composition in which the above-mentioned methyl etherified amino resin is methyl etherified melamine.
6. In paragraph 1, A film-forming composition in which the organic solvent is selected from the group consisting of toluene, methyl ethyl ketone (MEK), ethyl acetate (EA), 1-propanol, N,N-dimethylformamide (DMF), and dimethyl sulfoxide (DMSO).
7. In any one of paragraphs 1 through 6, A film-forming composition further comprising silicon dioxide having a particle size in the range of 1 μm to 15 μm.
8. In any one of paragraphs 1 through 6, A film-forming composition in which the above terephthalic acid is present in an amount ranging from greater than 0 mol% to 60 mol% based on a total amount of 100 mol% of terephthalic acid and saturated aliphatic dicarboxylic acid.
9. In any one of paragraphs 1 through 6, A film-forming composition in which the ethylene glycol is present in an amount ranging from greater than 0 mol% to 50 mol% based on a total amount of 100 mol% of ethylene glycol and saturated aliphatic diol.
10. In any one of paragraphs 1 through 6, A film-forming composition in which the weight ratio of the above copolyester to the above methyl etherified amino resin is in the range of 50:3 to 50:7.
11. A film-coated fabric comprising a base fabric and a film coated on said base fabric, The above film is a film-coated fabric formed by coating a film-forming composition according to any one of claims 1 to 10 onto a substrate fabric and then performing a crosslinking reaction.
12. In Paragraph 11, A film-coated fabric in which the fabric described above is a polyester fabric.

Description

Film-forming composition and film-coated fabric formed therefrom The present invention relates to a film-forming composition, more specifically, a film-forming composition comprising a copolyester, a methyl etherified amino resin, and a bonding agent, and a film-coated fabric formed from said film-forming composition. Currently, methods for producing recycled fibers from discarded clothing or waste fabrics require the use of fiber materials containing 100% single components or 97% or more polyester. Only under these conditions can recycled fibers be produced by undergoing a physical recycling process (e.g., mechanical cutting or crushing and subsequent pelletization by injection molding) and/or a chemical recycling process (e.g., decolorization and subsequent alcohol decomposition and subsequent polymerization) or other processes. In addition, fabrics made from the aforementioned fiber material containing more than 97% polyester often fail to meet the requirements for resistance to hydrostatic pressure and resistance to twisting of textiles. US 20190300647 A1 discloses a polyester resin that can be prepared from terephthalic acid (abbreviated as TPA), sebacic acid, ethylene glycol, and 2,2-dimethyl-1,3-propanediol. The polyester resin can be dissolved in ethyl acetate, and by adding a methylated melamine resin thereto and then stirring, a material for a coating film that can be coated on a metal can be formed. Since the coating film material of US 20190300647 A1 does not contain a bonding agent, fabrics made from the material tend to exhibit relatively low hydrostatic resistance. As mentioned above, there is still a need to develop materials that can be utilized to manufacture fabrics with relatively high resistance to hydrostatic pressure and twisting. Accordingly, the object of the present invention is to provide a film-forming composition capable of mitigating at least one of the disadvantages of the prior art and a film-coated fabric formed therefrom. According to one aspect of the present invention, the film-forming composition comprises a copolyester, a methyl etherified amino resin, a bonding agent, and an organic solvent. The copolyester is formed by copolymerizing terephthalic acid, a saturated aliphatic dicarboxylic acid, ethylene glycol, and a saturated aliphatic diol, and has a glass transition temperature in the range of -20°C to 20°C. The bonding agent is selected from the group consisting of p-toluenesulfonic acid and dodecylbenzenesulfonic acid. According to another aspect of the present invention, the film-coated fabric comprises a base fabric and a film coated on the base fabric. The film is formed by coating the aforementioned film-forming composition onto the base fabric and then performing a crosslinking reaction. Other features and advantages of the present invention will become apparent from the following detailed description of the embodiment(s) with reference to the accompanying drawings. Note that various features may not be in scale. FIGS. 1 to 10 are images illustrating the surface of each of the film-coated fabrics of Examples 1 to 10 (EX1 to EX10) after 1,000 flexing cycles, as described in Section B of the "Characteristic Evaluation" below. FIG. 11 is an image illustrating the surface of the film-coated fabric of Comparative Example 4 (CE4) after 1,000 bends, as described in Section B of the "Characteristic Evaluation" below. For the purposes of this specification, it will be clearly understood that the term “comprising” means “comprising but not limited thereto,” and the term “comprising” has the corresponding meaning. Where any prior art publication is referred to herein, such reference is not an acknowledgment that said publication forms part of the common knowledge in the art in Taiwan or any other country. Unless otherwise defined, all technical and scientific terms used herein have the meaning commonly understood by those skilled in the art to which this invention pertains. Those skilled in the art will know of numerous methods and materials similar to or equivalent to those described herein that can be used in the practice of this invention. In fact, this invention is not limited in any way to the methods and materials described herein. The present invention provides a film-forming composition comprising a copolyester, a methyl etherified amino resin, a bonding agent, and an organic solvent. The copolyester is formed by copolymerizing terephthalic acid, a saturated aliphatic dicarboxylic acid, ethylene glycol, and a saturated aliphatic diol. The copolyester has a glass transition temperature in the range of -20°C to 20°C. The bonding agent is selected from the group consisting of p-toluenesulfonic acid and dodecylbenzenesulfonic acid. In a specific embodiment, the copolyester has a glass transition temperature in the range of -15°C to 15°C. In certain embodiments, the saturated aliphatic dicarboxylic acid is selected from the group consisting of adipic acid, sebacic aci