ADHESIVE COMPOSITION, ADHESIVE AGENT, AND ADHESIVE SHEET

WIPO Patent Application WO/2016/147318

A1

An adhesive composition comprising: a first (meth)acrylic acid ester copolymer (A) which contains, as copolymer-constituting monomer units, a monomer having a hydroxyl group and a monomer having a carboxyl group; a second (meth)acrylic acid ester copolymer (B) which has a smaller weight average molecular weight than that of the copolymer (A) and contains, as copolymer-constituting monomer units, a monomer having a hydroxyl group and a monomer having a carboxyl group; and an isocyanate-type cross-linking agent (C). The adhesive composition is characterized in that: the ratio of the amount of the monomer having a hydroxyl group to the total amount of the copolymer (B)-constituting monomers in the copolymer (B) is larger than the ratio of the amount of the monomer having a hydroxyl group to the total amount of the copolymer (A)-constituting monomers in the copolymer (A); the total amount, expressed in part(s) by mass, of the monomer having a carboxyl group which is a constituent of the copolymer (A) and the monomer having a carboxyl group which is a constituent of the copolymer (B) is 0.1 to 1.0 part by mass relative to the total amount, i.e., 100 parts by mass, of the copolymer (A)-constituting monomers and the copolymer (B)-constituting monomers; and the compounding proportion between the copolymer (A) and the copolymer (B) is 90:10 to 10:90 by mass.

OZAWA YUKI (JP)
ARAI TAKAYUKI (JP)

PCT/JP2015/057920

September 22, 2016

March 17, 2015

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LINTEC CORP (JP)

C09J133/06; C09J7/20; C09J175/04

JP2008280375A	2008-11-20
JP2008045041A	2008-02-28
JP2011127052A	2011-06-30
JP2009173721A	2009-08-06
JP2011219587A	2011-11-04
JP2011137065A	2011-07-14

HAYAKAWA, Yuzi et al. (JP)
Yuji Hayakawa (JP)

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