AQUEOUS POLYURETHANE RESIN COMPOSITION AND OPTICAL FILM USING SAID COMPOSITION

WIPO Patent Application WO/2017/119372

A1

[Problem] To provide a polyurethane resin composition which has excellent moisture-resistant transparency, excellent adhesion to a photocured resin and excellent blocking resistance, while being suppressed in warping, and which is suitable for optical film applications. [Solution] An aqueous polyurethane resin composition which is obtained by: preparing a urethane prepolymer composition that contains a urethane prepolymer (A) obtained by reacting a polyol (a), a polyisocyanate (b) and an anionic group-introducing agent (c) and a specific (meth)acrylic compound (B) so that the mass ratio of the urethane prepolymer (A) to the (meth)acrylic compound (B) is 100:1-30; subsequently dispersing the urethane prepolymer composition into water so that the concentration of the urethane prepolymer composition is 10-70% by mass; and then causing the urethane prepolymer (A) in the thus-obtained aqueous dispersion to react with a chain extender (C).

IMOTO TAKESHI (JP)
YUKUTAKE HIDEAKI (JP)
KOSAKA TATSUMI (JP)
SHIMAMURA NOBUYUKI (JP)

PCT/JP2016/088972

July 13, 2017

December 27, 2016

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ADEKA CORP (JP)

C08G18/40; B32B7/02; B32B27/40; C08G18/10; C08J3/03; C08K5/103; C08K5/3492; C08L75/04; C09J4/02; C09J4/06; C09J175/04

WO2011010719A1	2011-01-27
WO2012147712A1	2012-11-01
WO2012114833A1	2012-08-30

JP2014134674A	2014-07-24
JPH11511765A	1999-10-12
JP2007256844A	2007-10-04
JP2014001340A	2014-01-09
JP2004141732A	2004-05-20
JP2006002010A	2006-01-05
JP2013023611A	2013-02-04
JP2011140139A	2011-07-21
JP2015218267A	2015-12-07

IZAWA Makoto (JP)

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