Process for making copolymers of maleic anhydride and alkyl vinyl ether of high specific viscosity
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United States of America Patent
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Jul 8, 2008
Grant Date -
Dec 21, 2006
app pub date -
Jun 21, 2005
filing date -
Jun 21, 2005
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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.
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