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OCA optical adhesive and preparation method and application thereof

A technology of optical adhesive and parts, applied in the direction of film/sheet without carrier, adhesive type, ester copolymer adhesive, etc., can solve the problems of uncontrollable polymer molecular weight, uncontrollable production process, pressure increase, etc.

Inactive Publication Date: 2021-01-12
世星科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most adhesives on the market are thermally polymerized by heating in a reactor. During the production heating process, accompanied by solvent reflux, pressure rise, etc., some of them are produced by UV ultraviolet light polymerization. Yes, but the production process cannot be controlled during the production process, and the molecular weight of the polymer during the polymerization process cannot be controlled

Method used

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Examples

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Effect test

preparation example Construction

[0020] The preparation method of OCA optical glue, including OCA optical glue, also includes the following steps:

[0021] Step 1: Mixing 2-ethylhexyl acrylate, isobornyl acrylate, 2-hydroxyethyl acrylate, 1-hydroxycyclohexyl benzophenone and dodecanethiol to obtain a monomer prepolymer;

[0022] Step 2: The monomer prepolymer obtained in step 1 is exposed to ultraviolet radiation and added with a photoinitiator and a crosslinking agent in a nitrogen-protected environment to obtain an OCA optical adhesive. The photoinitiator can be 11732-hydroxyl-2 -Methyl-1-phenylacetone, 1841-hydroxycyclohexyl phenyl ketone, 9072-methyl-2-(4-morpholinyl)-1-[4-(methylthio)phenyl]-1 - Acetone, TPO-2,4,6-trimethylbenzoyl-diphenylphosphine oxide, TPO-L ethyl 2,4,6-trimethylbenzoylphenylphosphonate, IHT-PI 910 2-Dimethylamino-2-benzyl-1-[4-(4-morpholinyl)phenyl]-1-butanone, 6592-hydroxy-2-methyl-1-[4-(2-hydroxy Ethoxy)phenyl]-1-propanone or MBF methyl benzoylformate.

[0023] On the basis of t...

Embodiment 1

[0031] OCA optical glue, including 65 parts of 2-ethylhexyl acrylate, 14.5 parts of isobornyl acrylate, 20 parts of 2-hydroxyethyl acrylate, 0.5 parts of 1-hydroxycyclohexyl benzophenone and 0.2 parts of molecular weight control agent ten dithiol.

[0032] The preparation method of OCA optical glue, including OCA optical glue, also includes the following steps:

[0033] Step 1: Mix 65 parts of 2-ethylhexyl acrylate, 14.5 parts of isobornyl acrylate, 20 parts of 2-hydroxyethyl acrylate, 0.5 parts of 1-hydroxycyclohexyl benzophenone and 0.2 parts of dodecanethiol Obtain monomer prepolymer;

[0034] Step 2: Add 11732-hydroxyl-2-methyl-1-phenylacetone and multifunctional cross-linking agent to the monomer prepolymer obtained in step 1 by exposing to ultraviolet radiation in a nitrogen-protected environment to make the monomer prepolymer The polymer is partially polymerized to obtain a prepolymer having a viscosity of about 300-10,000 centipoise.

[0035] On the basis of the abo...

Embodiment 2

[0045] OCA optical glue, including 45 parts of 2-ethylhexyl acrylate, 30 parts of isobornyl acrylate, 24.2 parts of 2-hydroxyethyl acrylate, and 0.1 part of 1-hydroxycyclohexyl benzophenone.

[0046] The preparation method of OCA optical glue, including OCA optical glue, also includes the following steps:

[0047] Step 1: Mix 45 parts of 2-ethylhexyl acrylate, 30 parts of isobornyl acrylate, 24.2 parts of 2-hydroxyethyl acrylate, and 0.1 part of 1-hydroxycyclohexylbenzophenone to obtain a monomer prepolymer;

[0048] Step 2: The monomer prepolymer obtained in step 1 is exposed to ultraviolet radiation and added with a 1841-hydroxycyclohexyl phenyl ketone photoinitiator and a trifunctional crosslinking agent under a nitrogen-protected environment to make the monomer prepolymer Partial polymerization, during the polymerization reaction, after the temperature of the mixture is increased by 10°C, the ultraviolet light is turned off to stop the reaction, so as to obtain a prepolyme...

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Abstract

The invention discloses an OCA optical adhesive, a preparation method and application of the OCA optical adhesive. The OCA optical adhesive comprises 2-ethylhexyl acrylate, isobornyl acrylate, 2-hydroxyethyl acrylate, 1-hydroxycyclohexyl phenyl ketone and a molecular weight control agent dodecanethiol. The preparation method of the OCA optical adhesive comprises the following steps: step 1, mixing2-ethylhexyl acrylate, isobornyl acrylate, 2-hydroxyethyl acrylate, 1-hydroxycyclohexyl phenyl ketone and dodecanethiol to obtain a monomer prepolymer; and 2, exposing the monomer prepolymer to ultraviolet radiation in a nitrogen protection environment, and adding a photoinitiator and a cross-linking agent to obtain the OCA optical adhesive. The application of the OCA optical adhesive comprises the following steps: a, unwinding a release film; b, coating the release film with the OCA optical adhesive, and to obtain the release film coated with the OCA optical adhesive; c, curing the release film coated with the OCA optical adhesive under illumination to obtain a cured release film; and d, winding the cured release film.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to an OCA optical glue, a preparation method and application of the OCA optical glue. Background technique [0002] At present, most adhesives on the market are thermally polymerized by heating in a reactor. During the production heating process, accompanied by solvent reflux, pressure rise, etc., some of them are produced by UV ultraviolet light polymerization. Yes, but the production process cannot be controlled during the production process, and the molecular weight of the polymer during the polymerization process cannot be controlled. Contents of the invention [0003] The technical problem solved by the invention is to provide an OCA optical adhesive with controllable molecular weight, a preparation method and application of the OCA optical adhesive. [0004] The technical solution adopted by the present invention to solve its technical problems is: OCA optical glue, including 2-eth...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J7/10C08F220/18C08F220/20C08F2/48C08F2/38
CPCC09J133/14C09J7/10C08F220/1808C08F2/48C08F2/38
Inventor 刘晓阳金成国
Owner 世星科技股份有限公司
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