Patent ID: 9562117
Date: 2017-02-07
CPC Classifications: C08F

Claim:
1. A process for preparing an isobutene copolymer derivative, the process comprising: (I) polymerizing isobutene monomers, or a monomer mixture comprising isobutene, in the presence of an aluminum trihalide-donor complex or an alkylaluminum halide-donor complex, and in the presence of an initiator, to form a high-reactivity isobutene homopolymer or copolymer having a number-average molecular weight (M wherein: (II) free-radically copolymerizing to obtain an intermediate isobutene copolymer; and then (III) reacting at least a portion of the carboxylic acid, ester, or anhydride in the intermediate isobutene copolymer with at least one selected from the group consisting of to form an isobutene copolymer derivative comprising at least one selected from the group consisting of a hydroxyl, a carboxylic ester, an amino, a quaternized amino, an amido, and an imido group, wherein: R R R