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Process for selective bromination of para-alkylstyrene/isoolefin copolymers

  • US 5,959,049 A
  • Filed: 02/13/1997
  • Issued: 09/28/1999
  • Est. Priority Date: 05/27/1988
  • Status: Expired due to Term
First Claim
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1. A process for producing a copolymer of isoolefin having between 4 and 7 carbon atoms and para-alkylstyrene which comprises admixing said isoolefin and said para-alkylstyrene in a copolymerization reactor under copolymerization conditions in the presence of a diluent, and a Lewis Acid catalyst, and maintaining said copolymerization reactor substantially free of impurities which can complex with said catalyst or copolymerize with said isoolefin or said para-alkylstyrene.

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