Carboxyl-containing isobutene copolymers are obtainable a) by cationic polymerization of a mixture of from 1 to 99 mol % of isobutene and from 99 to 1 mol % of a 2-methylalk-1-ene at less than 20 DEG C. in the presence of a halogen-containing Lewis acid and b) subsequent grafting of the isobutene copolymer obtainable in this manner with an alpha , beta -ethylenically unsaturated carboxylic acid or carboxylic acid derivative at above 100 DEG C. and in the presence of a free radical initiator. Such carboxyl-containing isobutene copolymers are particularly suitable as adhesive raw materials or as sealing compounds.
申请公布号
US5536788(A)
申请公布日期
1996.07.16
申请号
US19950490031
申请日期
1995.06.13
申请人
BASF AKTIENGESELLSCHAFT
发明人
DECKERS, ANDREAS;MUELLER, HANS-JOACHIM;KLIMESCH, ROGER;WISTUBA, ECKEHARDT;PLAUMANN, HEINZ;KOLK, ERICH;ISBARN, GUNTHER;FAUTH, KARL-HEINZ;KROBB, JOACHIM