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US 7,396,886 B2Granted
Process for making copolymers of maleic anhydride and alkyl vinyl ether of high specific viscosity
AssigneeISP Investments Inc.
InventorsYoon Tae Kwak, Paul D. Taylor, William J. Swatos
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Abstract
A process for making high specific viscosity copolymers of maleic anhydride and an alkyl vinyl either having as specific viscosity of at least 7, preferably 10-50, are made by copolymerizing maleic anhydride and an alkly vinyl ether monomers in the presence of added acetylene.
Claims19
A process for making copolymers of maleic anhydride and an alkyl vinyl ether which comprises copolymerizing maleic anhydride and said alkyl vinyl ether in the presence of added acetylene.
Dependencies are inferred from the claim text.