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Ultraviolet light solidified-type adhesive composition for optics and solidified layer and optical component thereof

A UV-curable technology, used in adhesives, optics, nonlinear optics, etc., to achieve excellent durability, no peeling, and excellent visible light transmittance.

Active Publication Date: 2015-08-12
ARAKAWA CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesive layer obtained from this adhesive composition may not be able to satisfy the above-mentioned characteristics, and there is room for improvement.

Method used

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  • Ultraviolet light solidified-type adhesive composition for optics and solidified layer and optical component thereof
  • Ultraviolet light solidified-type adhesive composition for optics and solidified layer and optical component thereof
  • Ultraviolet light solidified-type adhesive composition for optics and solidified layer and optical component thereof

Examples

Experimental program
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Effect test

Embodiment

[0054] Hereinafter, the present invention will be described more specifically by way of examples. However, the present invention is not limited to these Examples. In addition, in an Example, unless otherwise indicated, "%" and "part" mean "weight%".

[0055]

Synthetic example 1

[0057] (A-1) Synthesis of Components

[0058] In the reaction device with condensing tube and agitator, add 910 parts of hydrogenated polybutadiene polyols (manufactured by Nippon Soda Co., Ltd., trade name "NISSO-PB GI-3000") with a weight average molecular weight of 4000, Isofor 81 parts of ketone diisocyanate and 0.2 parts of tin octoate were heated up to 80° C. and kept for 2 hours. Then, the completion of the reaction was confirmed by NCO measurement, and a hydroxyl-terminated urethane oligomer was obtained as an intermediate. Then, 19 parts of 2-isocyanatoethyl methacrylate were added and kept at 80° C. for 2 hours. Then, the completion of the reaction was confirmed by NCO measurement, thereby obtaining a polyurethane with a weight-average molecular weight of 36,000 and an average number of functional groups of 2.0. acrylate oligomer (hereinafter referred to as (A-1) component). In addition, this weight average molecular weight is the polystyrene conversion value obtain...

Synthetic example 2

[0060] (A-2) Synthesis of Components

[0061] In the same reaction device as Synthesis Example 1, add 925 parts of hydrogenated polybutadiene polyols, 51 parts of isophorone diisocyanate and 0.2 parts of tin octoate that were used in Synthesis Example 1, heat up to 80°C and After retaining the temperature for 2 hours, the completion of the reaction was confirmed by NCO measurement, and a hydroxyl-terminated urethane oligomer was obtained as an intermediate. Then, add 24 parts of 2-isocyanatoethyl methacrylate, keep warm at 80°C for 2 hours, and confirm the completion of the reaction by NCO measurement, thereby obtaining a polyurethane methacrylic acid with a weight average molecular weight of 21,000 and an average functional group number of 2.0. Ester oligomer (hereinafter referred to as (A-2) component).

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Abstract

The invention provides an ultraviolet light solidified-type adhesive composition for optics and a solidified layer and an optical component thereof, which is capable of solving the problems that are found in the previous adhesive used in an optical component with multi-layer structure formed by sticking various materials, wherein the use of the ultraviolet light solidified-type adhesive composition for optics is characterized in that the ultraviolet light solidified-type adhesive composition comprises polyfunctional polyurethane (methyl) acrylate (A) obtained by the reaction between hydrogenated polybutadiene polyol, aliphatic series polyisocyanate and acrylate with isocyanate group (methyl), at least one of polyurethane (B1) and hydrogenated polybutadiene polyol (B2) that are obtained through the reaction between hydrogenated polybutadiene polyol and aliphatic series polyisocyanate,single-function (methyl) acrylate (C) with more than 8 carbon atoms of alkyl, and photoplymerization initiator (D); the solvent content is less than 1 weight percent; the viscosity under 25 DEG is with the range of 100 to 10000 mPa s; and the Gardner chroma is less than 1.

Description

technical field [0001] The present invention relates to an ultraviolet curable adhesive composition for optics, the cured layer, and an optical member. More specifically, it relates to an optical adhesive composition suitable for bonding optical members / components in various optical devices, a cured layer formed from the composition, and an optical member including the cured layer. Background technique [0002] Optical adhesives used for bonding optical components / members in optical devices and the like must not only have excellent adhesive strength, but also be excellent in various performances required for optical applications such as durability and visible light transmittance. For example, adhesives used for display panels in image display devices such as liquid crystal displays and electronic books are required to have high adhesive force and durability in addition to light resistance and heat resistance. In particular, when the adhesive itself is used as a light-transm...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J147/00C09J7/00
CPCB32B27/26C09J11/06C09J175/14C09J2203/318C09J7/30G02F1/1335
Inventor 罗聪松田伦幸木村和毅
Owner ARAKAWA CHEM IND LTD
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