Process for making copolymers of maleic anhydride and alkyl vinyl ether of high specific viscosity
AssigneeISP Investments Inc.
InventorsYoon Kwak, Paul Taylor, William Swatos
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Abstract
A process for making high specific viscosity copolymers of maleic anhydride and an alkyl vinyl ether by copolymerizing maleic anhydride and an alkyl vinyl ether monomers in the presence of added acetylene.
Claims23
Fine white powders of an alternating copolymer of maleic anhydride and a C1-C4 alkyl vinyl ether having a molecular structure (A-B)n where A is maleic anhydride and B is alkyl vinyl ether, and n is an integer indicative of its molecular weight, having a specific viscosity (SV) of at least 7 (1% wt./vol. in MEK, 25° C.).
A process for making high specific viscosity 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.