ACRYLIC PRESSURE-SENSITIVE-ADHESIVE COMPOSITION AND PRESSURE-SENSITIVE-ADHESIVE TAPE
Inventor(s)(发明人): DOI TAKAHIRO; SAIKI FUMIYA; SUDO MASATAKA
Priority number(s)(专利检索号): JP20140011037 20140124 ; WO2015JP51627 20150122
Abstract of WO2015111646 (A1):
To provide an acrylic pressure-sensitive-adhesive composition whereby a pressure-sensitive-adhesive tape having excellent fixing properties can be obtained. [Solution] A pressure-sensitive-adhesive composition containing an ABA-type triblock copolymer (a) comprising a segment (A) having a methacrylic acid ester as the main component thereof and a segment (B) having an acrylic acid ester as the main component thereof, an ABA-type triblock copolymer (b) comprising a segment (A) having a methacrylic acid ester as the main component thereof and a segment (B) having an acrylic acid ester as the main component thereof, and a tackifying resin (c) compatible with the triblock copolymer (a) and the triblock copolymer (b) and having a softening point of 110°C or above, the segment (B) of the triblock copolymer (b) having 2-ethylhexyl acrylate as a constituent monomer, and the triblock copolymer (b) being blended in a ratio of 0.1% by mass to 50% by mass with respect to the total amount of the triblock copolymer (a) and the triblock copolymer (b).
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