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Acrylate OCA optical adhesive film

A technology of acrylate and optical adhesives, which is applied in the direction of adhesives, ester copolymer adhesives, film/sheet adhesives, etc. It can solve the problems of easy softening, loss of elasticity, and easy brittleness of products to achieve strong adhesion The effect of force stability and excellent temperature resistance

Inactive Publication Date: 2018-09-07
重庆中膜复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The acrylate OCA optical adhesive film in the prior art tends to become brittle and lose elasticity when the temperature is low, and it is easy to soften and lose practicability when the temperature is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] An acrylic ester OCA optical adhesive film is made of the following raw materials in parts by weight:

[0016] 85 parts of acrylate prepolymer glue, 1 part of curing agent, 5 parts of thickener, 1 part of antioxidant, 8 parts of methyl cellulose, 3 parts of neutralizing agent, 6 parts of dipolypropionic acid, 1 part of benzotriazole 4 parts, 4 parts of valerenic acid and 3 parts of pentocuron.

[0017] The preparation method steps are as follows:

[0018] ①. Add acrylate prepolymer glue, curing agent, thickener, antioxidant, methylcellulose, neutralizing agent, dipolypropionic acid, benzotriazole, valerenic acid and pentocuron in sequence in the reaction equipment , and then heated up to 160 ° C for 3 hours, then gradually cooled to room temperature, filtered to remove insoluble matter, and stored with nitrogen gas to obtain a coating solution;

[0019] ②. At 150°C, use a scraper to coat the coating solution on the heavy-release carrier film substrate, and then dry an...

Embodiment 2

[0021] An acrylic ester OCA optical adhesive film is made of the following raw materials in parts by weight:

[0022] 70 parts of acrylate prepolymer glue, 3 parts of curing agent, 2 parts of thickener, 3 parts of antioxidant, 2 parts of methyl cellulose, 5 parts of neutralizing agent, 4 parts of dipolypropionic acid, 2 parts of benzotriazole 2 parts, 2 parts of valerenic acid and 5 parts of pentocuron.

[0023] The preparation method steps are as follows:

[0024] ①. Add acrylate prepolymer glue, curing agent, thickener, antioxidant, methylcellulose, neutralizing agent, dipolypropionic acid, benzotriazole, valerenic acid and pentocuron in sequence in the reaction equipment , and then heated up to 140 ° C for 5 hours, then gradually cooled to room temperature, filtered to remove insoluble matter, and stored with nitrogen gas to obtain a coating solution;

[0025] ②. At 130°C, use a scraper to coat the coating solution on the heavy-release carrier film substrate, and then dry...

Embodiment 3

[0027] An acrylic ester OCA optical adhesive film is made of the following raw materials in parts by weight:

[0028] 74 parts of acrylate prepolymer glue, 2 parts of curing agent, 4 parts of thickener, 2 parts of antioxidant, 6 parts of methyl cellulose, 4 parts of neutralizing agent, 5 parts of dipolypropionic acid, 1.5 parts of benzotriazole parts, 3.5 parts of valerenic acid and 4.6 parts of pentocuron.

[0029] The preparation method steps are as follows:

[0030] ①. Add acrylate prepolymer glue, curing agent, thickener, antioxidant, methylcellulose, neutralizing agent, dipolypropionic acid, benzotriazole, valerenic acid and pentocuron in sequence in the reaction equipment , and then heated up to 150 ° C for 4 hours, then gradually cooled to room temperature, filtered to remove insoluble matter, and stored with nitrogen gas to obtain a coating solution;

[0031] ②. At 140°C, use a scraper to coat the coating solution on the heavy-release carrier film substrate, and then...

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PUM

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Abstract

The invention relates to the technical field of adhesives and specifically relates to an acrylate OCA optical adhesive film. The acrylate OCA optical adhesive film is prepared from 70-85 parts of acrylate prepolymer adhesive, 1-3 parts of curing agent, 2-5 parts of thickening agent, 1-3 parts of antioxidant, 2-8 parts of methylcellulose, 3-5 parts of neutralizing agent, 4-6 parts of dipolypropionic acid, 1-2 parts of benzotriazole, 2-4 parts of valeric acid and 3-5 parts of pencycuron. Due to the reasonable design of the components of the optical adhesive film and preparation process parameters, the prepared product has excellent temperature resistance and still has relatively high adhesion stability when being placed under the conditions of high temperature and high humidity for a long time.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to an acrylate OCA optical adhesive film. Background technique [0002] OCA (Optically Clear Adhesive) is a special adhesive used to bond transparent optical components (such as lenses, etc.). It is required to be colorless and transparent, with light transmittance above 90%, good bonding strength, curable at room temperature or medium temperature, and small curing shrinkage. OCA optical glue is one of the raw materials for important touch screens. The optical acrylic adhesive is made without a base material, and then a layer of release film is attached to the upper and lower base layers. It is a double-sided adhesive tape without a base material. [0003] The acrylate OCA optical adhesive film in the prior art tends to become brittle and lose its elasticity when the temperature is low, and it is easy to soften and lose practicability when the temperature is high. Contents of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/04C09J11/08C09J11/06C09J7/10C09J7/30
Inventor 周贤敏
Owner 重庆中膜复合材料有限公司