PHOTOCURABLE RESIN COMPOSITION AND OPTICAL MATERIAL OBTAINED THEREFROM

WIPO Patent Application WO/2016/158832

A1

The present invention is a photocurable resin composition comprising a specific, cationically polymerizable compound (A), a photo-acid generator (B), and zirconium oxide particles (C) having an average primary-particle diameter in a specific range. The photocurable resin composition has the following property (X): in an examination with a photoreaction calorimeter (light DSC), when the photocurable resin composition is irradiated with an Hg-i line at an luminance of 10 mW, the total calorific value during the period of 15 minutes after initiation of the irradiation is 100 mJ/mg or greater. That is, the so-called photo-curing reaction rapidly proceeds in the initial stage of light exposure, and the photocurable resin composition generates the heat of reaction in an amount not less than a certain value. Due to this, a cured material obtained by photocuring the photocurable resin composition has a high refractive index and a large Abbe number as a matter of course. In addition, since the photocuring reaction of the photocurable resin composition proceeds at a high rate, the zirconium oxide particles (C) during the curing reaction are less apt to aggregate or become uneven, and a highly transparent cured object which has little turbidity and a low haze is obtained.

SUGIMOTO NAOYA (JP)
TANAKA YUKIKO (JP)

PCT/JP2016/059848

October 06, 2016

March 28, 2016

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NITTO DENKO CORP (JP)

C08G59/20; C08K9/06; C08L63/00; G02B1/04

WO2011040211A1	2011-04-07
WO2006087979A1	2006-08-24

JP2012017368A	2012-01-26
JP2014125502A	2014-07-07

SAITOH Yukihiko et al. (JP)
Masahiko Nishifuji (JP)

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