Patent ID: 8202945
Filing Date: 2012-06-19
Classification: C08C,C08F,Y02P

Abstract:
1. A process comprising subjecting a reaction mixture including a) at least one tribromide brominating agent selected from a benzyltrialkylammonium tribromide, tetraethylammonium tribromide or tetrapropylammonium tribromide, b) at least one butadiene/vinyl aromatic copolymer containing from 5 to 90 percent by weight of polymerized vinyl aromatic monomer units and from 10 to 95 percent by weight of polymerized butadiene units, and a weight average molecular weight of at least 1000 and c) at least one solvent for the butadiene/vinyl aromatic copolymer, to conditions sufficient to brominate at least 50 percent of non-aromatic double bonds in the butadiene/vinyl aromatic copolymer.