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Ultraviolet-curing liquid-state optical cement

A technology of ultraviolet light and optical adhesive, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of high cost, difficult to reduce thickness, poor adhesion of liquid optical adhesives, etc., to achieve the yield Improve the effect of thin lamination thickness and strong adhesion

Active Publication Date: 2014-07-23
SUZHOU BETELY POLYMER MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problems of easy generation of air bubbles, high cost, and difficulty in reducing the thickness when OCA tape is bonded; and the existing liquid optical adhesives with poor adhesion, low light transmittance, low refractive index and insufficient flexibility

Method used

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  • Ultraviolet-curing liquid-state optical cement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An ultraviolet light curing transfer adhesive, which is composed of the following raw materials: 30g of silicone modified polybutadiene acrylate, 25g of polyurethane acrylate, 24g of isobornyl methacrylate, 16g of triethylene glycol dimethacrylate, 1-hydroxycyclohexyl phenyl ketone 2g, phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide 1g, γ-(methacryloyloxy)propyltrimethoxysilane 1g, 2 -(2',4'-dihydroxyphenyl)-5,6-dihydroxybenzotriazole 0.5g, 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5- Benzotriazole chloride 0.5g.

[0025]Prepare according to the following method: add the above-mentioned initiator and 24 g of isobornyl methacrylate to the star-shaped vacuum mixer in the thousand-level dust-free workshop, heat to 55 ° C, stir and dissolve; then add the above-mentioned oligomer and triethylene glycol 16g of dimethacrylate, heated to 55°C under vacuum, and stirred evenly; finally, add the above-mentioned additives, disperse at high speed with a disperser, press filter and pack,...

Embodiment 2

[0028] A UV-curable transfer adhesive, consisting of the following raw materials: 61g of silicone-modified polybutadiene acrylate, 18g of isobornyl methacrylate, 12g of phenoxymethylethyl acrylate, 2-hydroxy- 2-methyl-1-phenyl-1-propanone 2g, phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide 3g, N-(β-aminoethyl)-γ-aminopropyl Methyldimethoxysilane 2g, 2,6-di-tert-butylphenol 1g, 2-(2',4'-dihydroxyphenyl)-5,6-dihydroxybenzotriazole 0.5g, 2 -(2'-Hydroxy-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole 0.5 g.

[0029] Prepare according to the following method: add the above-mentioned initiator and 18 g of isobornyl methacrylate to the star-shaped vacuum mixer in the thousand-level dust-free workshop, heat to 50 ° C, stir and dissolve; then add the above-mentioned oligomer, phenoxy 12g of methyl ethyl acrylate, heated to 50°C under vacuum, and stirred evenly; finally, add the above-mentioned additives, disperse at high speed with a disperser, press filter and pack, and then the U...

Embodiment 3

[0032] An ultraviolet light curing transfer adhesive, which is composed of the following raw materials: 30g of silicone modified polybutadiene acrylate, 14g of polyester acrylate, 20g of polyurethane acrylate, 16.5g of propoxylated glycerin triacrylate, phenoxymethyl 13.5 g of ethyl ethyl acrylate (PHEMA), 2 g of 1-hydroxycyclohexyl phenyl ketone, 2 g of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, 1 g of vinyltrimethoxysilane, 2-(2',4'-dihydroxyphenyl)-5,6-dihydroxybenzotriazole 0.5g, 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5 - Benzotriazole chloride 0.5 g.

[0033] Prepare according to the following method: add the above-mentioned initiator and 16.5 g of propoxylated glycerol triacrylate to the star-shaped vacuum mixer in the thousand-level dust-free workshop, heat to 60 ° C, stir and dissolve; then add the above-mentioned oligomer, phenoxy 13.5g of methyl ethyl acrylate (PHEMA), heated to 60°C in a vacuum state, stirred evenly; finally added the above-mentioned additives, d...

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Abstract

The invention discloses an ultraviolet light-curable liquid optical adhesive, which comprises 50-75% of oligomers, 20-40% of active monomers, 3-6% of free radical photoinitiators, and 2-4% of auxiliary agents in terms of weight percentages. %; the oligomer is one or more of silicone modified polybutadiene acrylate, polyurethane acrylate, polyester acrylate; the active monomer is monofunctional, difunctional or polyfunctional One of the functional group acrylates. The UV-curable liquid optical adhesive can be used for fixed bonding between touch screen protective glass and glass, touch screen protective glass and LCD screen, and can be fully cured within 3000mj / cm2 energy at room temperature, and the overall light transmittance can reach 93 % or more, the refractive index exceeds 1.50, which can greatly improve the light transmittance of the touch screen, increase the yield, and is more suitable for continuous production, improve production efficiency, and have stable and reliable performance in high temperature and high humidity environments and good environmental protection.

Description

technical field [0001] The invention relates to an ultraviolet light-curable liquid optical adhesive, in particular to an ultraviolet light-curable liquid optical adhesive used for bonding capacitive touch screens. Background technique [0002] In recent years, the touch screen (Touch Panel) has been widely used in high-end electronic products such as mobile phones and computers. Because of its unique visual design and human-computer interaction, touch screens have made rapid progress in the application of high-end electronic products such as mobile phones and computers. , Driving a new wave of electronic product innovation. From traditional toys, game consoles, information query machines, to new PDAs, mobile phones, tablet computers, GPS, POS, TP's application fields are getting wider and wider. Among them, the application of mobile phone touch technology is the most important. According to the survey, it is estimated that more than 60% of touch panels will be used in mob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C09J167/07C09J11/06
Inventor 陶林华殷永彪
Owner SUZHOU BETELY POLYMER MATERIALS CO LTD
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