Resin composition for ultraviolet curable adhesive and adhesive

A resin composition and adhesive technology, applied in the direction of adhesive types, ester copolymer adhesives, polyurea/polyurethane adhesives, etc. Adhesive can not be filled and other problems, to achieve the effect of excellent step followability, excellent whitening resistance, excellent adhesion and retention

Active Publication Date: 2017-05-31
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, currently mainstream optical members (adherents) have various printed patterns, wiring, and other steps. When the above-mentioned adhesive is used, the adhesive cannot completely fill the steps. , Bubbles or voids are generated around the step height difference (poor step followability), therefore, there is a problem of adversely affecting optical performance

Method used

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  • Resin composition for ultraviolet curable adhesive and adhesive
  • Resin composition for ultraviolet curable adhesive and adhesive

Examples

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Embodiment

[0071] Hereinafter, although an Example demonstrates this invention more concretely, the scope of the present invention is not limited to these Examples.

[0072] In addition, in the present invention, "part" means "mass part", and "%" means "mass%" unless otherwise indicated.

Synthetic example 1

[0074]

[0075] Into a reaction vessel equipped with a stirrer, a reflux condenser, a nitrogen introduction tube, and a thermometer, 460 parts by mass of polytetramethylene glycol (number-average molecular weight: 1,000), 6.5 parts by mass of 2-hydroxyethyl acrylate, 2,6-ditertiary 2 parts by mass of butyl-cresol, and 0.3 parts by mass of p-methoxyphenol. After raising the temperature in the reaction container to 40°C, 105 parts by mass of isophorone diisocyanate was added. Then, 0.1 part by mass of dioctyltin dineodecanoate was added, and the temperature was raised to 80° C. over 1 hour. Then, it held at 80 degreeC for 12 hours, and after confirming that all the isocyanate groups disappeared, it cooled and obtained the urethane acrylate resin (A-1). The equivalent of the acryloyl group of the obtained urethane acrylate resin (A-1) was 10,208 (rounded off below the decimal point. The molecular weight of 2-hydroxyethyl acrylate was 116.1. The same applies below.), and the we...

Synthetic example 2

[0077]

[0078]653 parts by mass of polycarbonate polyol (Kuraray Polyol C-3090, manufactured by Kuraray Co., Ltd.) and 7.8 parts by mass of 2-hydroxyethyl acrylate were added to a reaction vessel equipped with a stirrer, a reflux condenser, a nitrogen introduction tube, and a thermometer. , 2,6-di-tert-butyl-cresol 2 parts by mass, p-methoxyphenol 0.3 parts by mass. After raising the temperature in the reaction container to 40°C, 47 parts by mass of isophorone diisocyanate was added. Then, 0.1 part by mass of dioctyltin dineodecanoate was added, and the temperature was raised to 80° C. over 1 hour. Then, it held at 80 degreeC for 12 hours, and after confirming that all the isocyanate groups disappeared, it cooled and obtained the urethane acrylate resin (A-2). The obtained urethane acrylate resin (A-2) had an acryloyl group equivalent of 10,535 and a weight average molecular weight of 32,000.

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Abstract

The assignment for the present invention to solve is to provide a resin composition for UV-cured adhesive which has excellent step height conformability and adhesive whose level does not occur small scale exfoliation for base materials composed of various materials. In order to solve the assignment, the present invention provides the resin composition for UV-cured adhesive which comprises a urethane (meth)acrylate resin (A) which is obtained by making polyol (a) react with polyisocianate (b) and (meth)acyl compound (c) having a hydroxyl group. The equivalent of a (meth)acryloyl group of the urethane (meth)acrylate resin (A) is 8,000-17,000.

Description

technical field [0001] The present invention relates to an ultraviolet curable adhesive resin composition and an adhesive laminate that are excellent in adhesive force and step followability. Background technique [0002] Ultraviolet curable adhesives have the following characteristics, that is, they generally do not contain solvents, water and other solvents, so when forming the adhesive layer, there is no need to remove solvents, water and other solvents. It is widely used in the manufacture of optical related products. [0003] Among the optical-related products mentioned above, mobile phones, LCD TVs, personal computers, etc. are integrated with various components such as polarizers, brightness enhancement films, retardation films, and color filters, and UV-curable adhesives are used in many parts of them. . [0004] As an ultraviolet curable adhesive used in the above-mentioned mobile phones, liquid crystal televisions, personal computers, etc., for example, an adhesi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C08G18/67
CPCC09J133/14C09J175/14
Inventor 纲岛启次小西真理子藤井友理田中浩二郎
Owner DIC CORP
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