(meth)acrylate compound, resin composition containing the same, cured product of the resin composition, and energy ray-curable resin composition for optical lens sheet and cured product thereof

Abstract

Disclosed is a photosensitive resin which is excellent in transparency, while having high refractive index and high adhesion by the resin itself. This photosensitive resin provides a cured product having a sufficient hardness. Also disclosed is a resin composition for optical lens sheet, which is excellent in mold releasability, mold reproducibility, adhesion to a base, while having high refractive index, high glass transition temperature and good light resistance. Specifically disclosed is a urethane compound (A) characterized by being obtained by reacting an epoxy resin (a), which is obtained by reacting a compound represented by the general formula (1) below with epihalohydrin, a monocarboxylic acid compound (b) having an ethylenically unsaturated group in a molecule, and an aromatic polyisocyanate compound (c). Also specifically disclosed is an energy ray-curable resin composition for optical lens sheet, which is characterized by containing the urethane compound (A) and a photopolymerization initiator (B).

Description

technical field [0001] The present invention relates to an unsaturated group-containing compound having a specific structure whose resin itself has a high refractive index and is excellent in transparency, a resin composition containing the compound, and a cured product thereof. Examples of its uses include materials for film formation, solder masks in the manufacture of printed (wiring circuit) boards, plating resists, bonding agents, lenses, displays, optical fibers, optical waveguides, holograms, coating agents, etc. . [0002] Furthermore, this invention relates to the energy-beam curable resin composition for optical lens sheets, and its hardened|cured material. More specifically, the present invention relates to a resin composition and a cured product particularly suitable for lenses such as Fresnel lenses, lenticular lenses, prism lenses, and microlenses. Background technique [0003] In recent years, the development of transparent photosensitive materials with high...

AI Technical Summary

Problems solved by technology

The former molding method produces lenses by heating, pressurizing, and cooling cycles, so productivity is poor

In addition, the latter casting method has problems in that it takes a long production time since the monomer is polymerized after it flows into the mold, and that the manufacturing cost is high due to the need for multiple molds

However, cured products of these conventional resin compositions have problems such as poor adhesion to substrates and poor release properties from molds.

If the adhesion is poor, the types of substrates that can be used are limited, and it is difficult to obtain desired optical properties

If the mold release property is poor, the resin will remain in the mold during demolding, and the mold cannot be reused

In addition, there is also a problem that the resin composition that can obtain a cured product with good adhesion to the substrate also has good adhesion to the mold, so the releasability tends to deteriorate. On the other hand, resins with good releasability Adhesiveness of the composition tends to deteriorate

However, it is difficult to achieve high refractive index, high Tg point, mold release, adhesiveness, low viscosity, and light resistance, and a resin composition that can satisfy all properties has not yet been obtained.

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