OPTICALLY CLEAR ADHESIVE COMPOSITION, OPTICALLY CLEAR ADHESIVE FILM COMPRISING SAME, AND FLAT DISPLAY DEVICE

WIPO Patent Application WO/2018/052178

A1

The present invention relates to: an optically clear adhesive composition comprising a radiation curable (meth)acrylate copolymer and a photopolymerization initiator, wherein the radiation curable (meth)acrylate copolymer comprises, on the basis of the total weight of the constituent elements contained in the copolymer, 95-99.9 wt% of an acrylic copolymer containing a hydroxyl group and 0.1-5 wt% of a (meth)acrylate-based monomer containing an isocyanate group, the acrylic copolymer containing a hydroxyl group and the (meth)acrylate-based monomer containing an isocyanate group form a urethane bond, and the acrylic copolymer containing a hydroxyl group comprises an ethylene oxide group-containing (meth)acrylate monomer having a glass transition temperature (Tg) of -75°C to -55°C and a hydroxyl group-containing alkyl acrylate monomer and has a weight average molecular weight of 200,000-1,000,000; an optically clear adhesive film comprising the same; and a flat display device.

CHOI HAN-YOUNG (KR)
JUNG KYONG-MOON (KR)
PARK YIL-SUNG (KR)
YU BYUNG-MUK (KR)

PCT/KR2017/005951

March 22, 2018

June 08, 2017

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DONGWOO FINE CHEM CO LTD (KR)

C09J133/10; C08J5/18; C08J7/043; C08J7/046; G02B5/30; G02F1/1335

WO2003066766A1

2003-08-14

JP2014058679A	2014-04-03
KR20130039240A	2013-04-19
KR20160096958A	2016-08-17
US20050239916A1	2005-10-27
US20110007244A1	2011-01-13

HANYANG PATENT FIRM (KR)

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