Block copolymer composition
 A block copolymer composition comprising PA0 40-85% by weight of a block copolymer A.sub.1 -B.sub.1 from an aromatic vinyl compound and a conjugated diene, respectively, A.sub.1 being <20% by weight of (A.sub.1 +B.sub.1), A.sub.1 and B.sub.1 having a molecular weight >12,000 and >150,000, respectively, and PA0 15-60% by weight of a block copolymer A.sub.2 -B.sub.2 -A.sub.3 from an aromatic vinyl compound, a conjugated diene and aromatic vinyl compound, respectively, A.sub.2 +A.sub.3 being >20% by weight of A.sub.2 +B.sub.2 +A.sub.3, A.sub.2 and A.sub.3 having a molecular weight >12,000 and PA0 (molecular weight of B.sub.2).ltoreq.(molecular weight of B.sub.1)/1.5. an adhesive composition comprising PA0 100 parts by weight (pbw) of said block copolymer composition, 20-300 pbw of a tackifying resin, and PA0 0-200 pbw of a softener, and PA0 a process for the preparation of said adhesive composition by mixing the components in question. 
Shell Internationale Research Maatschappij B.V.
C C
C08F C09J
inventional inventional
Takumi Hisaharu Yasuo Toshinori
Miyachi Ito Toyama Sakagami