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Coating composition and film prepared therefrom

A coating composition and oligomer technology, applied in the direction of coating, can solve the problems of high moisture permeability and poor durability, and achieve the effects of improving moisture permeability resistance and surface hardness, simple coating process, and excellent optical properties

Active Publication Date: 2021-09-28
DONGJIN SEMICHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem in the above technology that the surface hardness limit is 3H, and the durability is still poor due to high moisture permeability

Method used

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  • Coating composition and film prepared therefrom
  • Coating composition and film prepared therefrom
  • Coating composition and film prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0059] Add dropwise the prepared catalyst of 10 parts by weight of distilled water, 20 parts by weight of acetonitrile (Oi Chemical and Metal Co., Ltd.), 2 parts by weight of the dry flask with condenser tube and stirrer, and stir at normal temperature for 1 hour , then dropwise add 20 parts by weight of 2-(3,4-epoxycyclohexyl) ethyltrimethoxymethane (2-(3,4-epoxycyclohexyl) ethyltrimethoxysilane, Shin-Etsu Chemical, product name: KBM-303) and stir further 6 hours. After the reaction is completed, wash twice to extract the catalyst and impurities, and finally obtain a silsesquioxane oligomer with a ratio of clathrate silsesquioxane and trapezoidal silsesquioxane of 10:90.

Synthetic example 2

[0061] Add dropwise the prepared catalyst of 10 parts by weight of distilled water, 50 parts by weight of acetonitrile (Oi Chemical and Metal Co., Ltd.), 2 parts by weight of the dry flask with condenser tube and stirrer, and stir at normal temperature for 1 hour , and then dropwise added 20 parts by weight of 2-(3,4-epoxycyclohexyl)ethyltrimethoxymethane (Shin-Etsu Chemical, product name: KBM-303) and stirred for further 6 hours. After the reaction is completed, wash twice to extract the catalyst and impurities, and finally obtain a silsesquioxane oligomer with a ratio of clathrate silsesquioxane and trapezoidal silsesquioxane of 30:70.

Synthetic example 3

[0063] Add dropwise the prepared catalyst of 10 parts by weight of distilled water, 90 parts by weight of acetonitrile (Oi Chemical and Metal Co., Ltd.), 2 parts by weight of the dry flask with condenser tube and stirrer, and stir at normal temperature for 1 hour , and then dropwise added 20 parts by weight of 2-(3,4-epoxycyclohexyl)ethyltrimethoxymethane (Shin-Etsu Chemical, product name: KBM-303) and stirred for further 6 hours. After the reaction is completed, wash twice to extract the catalyst and impurities, and finally obtain a silsesquioxane oligomer with a ratio of clathrate silsesquioxane and trapezoidal silsesquioxane of 50:50.

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Abstract

The present invention relates to a coating composition. More specifically, the present invention relates to a coating composition that can significantly improve moisture permeability resistance and surface hardness through a simple coating process without impairing the optical properties of a cellulose triacetate film.

Description

technical field [0001] The present invention relates to a coating composition. Specifically, the present invention relates to a coating composition capable of improving moisture permeability resistance and surface hardness without damaging triacetate cellulose only by a simple coating process of applying the coating composition on a triacetate cellulose film Optical properties of plain film. Background technique [0002] What follows merely provides background information related to the present invention and does not constitute prior art. [0003] Cellulose triacetate film is a natural plastic film that has been used as camera film for more than half a century. It has a unique amorphous structure and thus unique mechanical and optical properties. In particular, it has extremely low birefringence and excellent optical isotropy. Based on these characteristics, cellulose triacetate films are widely used in optical films, such as supports for polarizer protective films and v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/06C08J7/046C08L1/12C08J7/043
CPCC08L1/12C09D183/06C08J7/043C08J7/046C09D183/00G02B1/10C09D5/00C08J7/04
Inventor 崔智殖金永模朴景珉张星根南东缜崔胜皙申圭淳
Owner DONGJIN SEMICHEM CO LTD
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