PRESSURE-SENSITIVE ADHESIVE COMPOSITION, PRESSURE-SENSITIVE ADHESIVE SHEET AND METHOD FOR PRODUCING PRESSURE-SENSITIVE ADHESIVE SHEET
申请人:NIWA Masahito
公开号:US20110159195A1
公开(公告)日:2011-06-30
The present invention relates to an acrylic pressure-sensitive adhesive composition comprising a copolymerization reaction product of a monomer mixture satisfying the following both conditions: (a) the monomer mixture includes a monomer m1 in an amount of 50% by mass or more based on whole monomer components constituting the monomer mixture, wherein the monomer m1 is an alkyl (meth)acrylate represented by the following formula (I):
CH
2
═C(R
1
)COOR
2
(I)
wherein R
1
represents a hydrogen atom or a methyl group, and R
2
represents an alkyl group having from 1 to 20 carbon atoms; and (b) the monomer mixture includes a monomer m2 in an amount of 12% by mass or more based on the whole monomer components constituting the monomer mixture, or a monomer m2 and a monomer m3 in an amount in total of 12% by mass or more based on the whole monomer components constituting the monomer mixture, wherein the monomer m2 is an imidazole group-containing unsaturated monomer, and the monomer m3 is an amide group-containing unsaturated monomer.