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A kind of coating solution for polyester film and application thereof

A technology of polyester film and coating liquid, used in polyester coatings, coatings, conductive coatings, etc., can solve the problem of not being particularly ideal, and achieve the effects of good sliding, high light transmittance and excellent adhesion

Active Publication Date: 2022-03-29
WEIFANG FUWEI PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polyester film coated with the coating agent prepared in this patent has a light transmittance of 90.1~91.0%, which is not particularly ideal

Method used

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  • A kind of coating solution for polyester film and application thereof
  • A kind of coating solution for polyester film and application thereof
  • A kind of coating solution for polyester film and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Embodiment 1: a kind of coating solution for polyester film and its application

[0078] Include the following steps:

[0079] 1. Synthesis of water-based polyester resin

[0080] Add 136.5 kg of ethylene glycol, 332.6 kg of terephthalic acid, 28.1 kg of succinic acid, 11.7 kg of trimethylolpropane, 4.7 kg of dimethylol propionic acid, and 7.0 kg of adipic acid into a reaction kettle equipped with a reflux device Diglycidyl ester and 2.8 kilograms of esterification catalyst titanium tetraisopropoxide, after passing all the air in the nitrogen replacement kettle, the temperature was raised to 210° C. at a rate of 2° C. / min at a stirring rate of 2000 rpm and a constant temperature reaction was carried out for 3 hours. After the reaction is completed, cool down to 150°C and vacuumize. After the vacuum degree in the kettle reaches -0.08MPa and the temperature is stable at 150°C, add 32.8 kg of phthalic anhydride and react for 1.5 hours at 150°C and 3000 rpm. , after cooli...

Embodiment 2

[0101] Embodiment 2: a kind of coating solution for polyester film and its application

[0102] Include the following steps:

[0103] 1. Synthesis of water-based polyester resin

[0104] Add 142.8 kg of ethylene glycol, 332.6 kg of terephthalic acid, 33.3 kg of succinic acid, 14.3 kg of trimethylolpropane, 7.6 kg of dimethylolpropionic acid, and 9.5 kg of adipic acid into a reaction kettle equipped with a reflux device Diglycidyl ester and 3.8 kilograms of esterification catalyst titanium tetraisopropoxide, after passing all the air in the nitrogen replacement kettle, the temperature was raised to 220° C. at a rate of 3° C. / min at a stirring rate of 2300 rpm and a constant temperature reaction was carried out for 4 hours. After the reaction is completed, cool down to 170°C and vacuumize. After the vacuum degree in the kettle reaches -0.08MPa and the temperature is stable at 170°C, add 38 kg of phthalic anhydride and react at 170°C and 3300 rpm for 2 hours. , after cooling do...

Embodiment 3

[0125] Embodiment 3: A kind of coating solution for polyester film and its application

[0126] Include the following steps:

[0127] 1. Synthesis of water-based polyester resin

[0128] 149 kg of ethylene glycol, 332.6 kg of terephthalic acid, 28.9 kg of succinic acid, 19.3 kg of trimethylolpropane, 9.6 kg of dimethylolpropionic acid, and 7.2 kg of adipic acid were added to the reactor equipped with a reflux device Diglycidyl ester and 4.3 kilograms of esterification catalyst titanium tetraisopropoxide, after nitrogen replacement of all the air in the kettle, the temperature was raised to 240° C. at a rate of 4° C. / min at a stirring rate of 2600 rpm and a constant temperature reaction was carried out for 5 hours. After the reaction is completed, cool down to 180°C and vacuumize. After the vacuum degree in the kettle reaches -0.08MPa and the temperature is stable at 180°C, add 43.3 kg of phthalic anhydride and react for 3 hours at 180°C and 3500 rpm. , after cooling down to ...

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Abstract

The invention provides a coating liquid for polyester films and its application, including the synthesis of water-based polyester resin, the synthesis of polyester-modified water-based acrylic resin, the preparation of silanol-modified nano-silica pre-dispersion liquid, and the coating liquid. preparation. The coating obtained by the coating liquid prepared by the invention has the characteristics of high light transmittance, excellent adhesion, antistatic, and good sliding properties. The adhesion to the polyester film is 5.2 to 6.7%, and the adhesion to the post-processing layer is 5.2 to 6.7%. The adhesion is 6.0~6.9%; the five-layer dry film resist polyester film prepared from this coating liquid has a light transmittance of 92.33~92.76%, a haze value of 0.99~1.12%, and static friction coefficient: inner surface layer 0.50~0.54μs, outer surface 0.41~0.44μs, surface inherent resistance 0.82×10 11 ~1.13×10 11 Ω, the film has good sliding properties and excellent antistatic properties.

Description

Technical field [0001] The invention relates to a coating liquid for polyester films and its application, belonging to the technical field of polymer materials. Background technique [0002] Biaxially oriented polyester film (BOPET) is widely used in electronics, electricity, optics, etc. due to its excellent mechanical properties, optical properties, electrical insulation properties, barrier properties, temperature resistance and chemical corrosion resistance, and good dimensional stability. products, magnetic products and packaging. Polyester films are used in the optical field. In addition to mechanical strength, thermal stability, barrier properties, etc., the requirements for the key indicator of light transmittance are even more stringent. For example, in terms of diffusion films and brightness enhancement films used in liquid crystal display panels, the light transmittance of the polyester film used as the base film must reach more than 90%. The dry film resist used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D151/08C09D5/24C09D7/62C08J7/044C08L67/02
CPCC09D167/00C09D5/24C09D7/62C09D7/40C08J7/044C08J7/0427C08J2367/02C08J2467/00C08J2451/08C08L51/08C08K9/06C08K9/04C08K7/26
Inventor 王国明周慧芝于涛
Owner WEIFANG FUWEI PLASTIC