Copolymers of 3-methacryloyloxy-2-hydroxypropyl trimethylammonium chloride monomer and vinyl monomer
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United States of America Patent
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Jul 21, 1992
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N/A
app pub date -
Dec 26, 1989
filing date -
Nov 30, 1988
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Expired
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Abstract
The present invention provides a copolymer comprising the polymerization product of two or more vinyl monomers wherein one of the monomers is a mixture of 3-methacryloyloxy-2-hydroxypropyltrimethylammonium halide and 2-methacryloyloxy-3-hydroxypropyltrimethylammonium halide salt. The copolymer has an intrinsic viscosity greater than about 5 dl/g. The preferred copolymer comprises the polymerization product of acrylamide and a mixture of 3-methacryloyloxy-2-hydroxypropyltrimethylammonium chloride and 2-methacryloyloxy-3-hydroxypropyltrimethylammonium chloride. The copolymers of the present invention are particularly useful as flocculants.
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