Pressure-sensitive adhesive useful on film for covering jet ink prints

摘要

Pressure-sensitive adhesive consists of (a) 10-90 wt.% 2-4C alkyl (meth)acrylate/(meth)acrylic acid copolymer (I) contg. 15-65 wt.% n-butyl acrylate, 15-75 wt.% n-butyl methacrylate and 0.5-15 wt.% (meth)acrylic acid components, which has a Fikentscher K value of 25-95 (measured in THF to DIN 51562), (b) 90-10 wt.% 2-4C alkyl acrylate/acrylic acid copolymer (II) contg. 40-95 wt.% n-butyl acrylate, 0.5-15 wt.% acrylic acid and 0.1-5.0 wt.% crosslinker based on epoxides or amides contg. N-methylol gps., which has a K value of 70-160 (in THF), and (c) opt. usual additives.