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US 4,064,333 AGranted
Process for the high molecular weight polymers of diallyldimethylammonium fluoride polymers directly from diallyldimethylammonium fluoride monomer
AssigneeAmerican Cyanamid Company
InventorsRobert Rabinowitz, Richard Parke Welcher
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Abstract
Under specified conditions of reaction, a substantially pure aqueous solution of diallyldimethylammonium fluoride monomer can be polymerized to provide corresponding polymers having an intrinsic viscosity of at least about 0.1 deciliter per gram measured in 1.0 N NaCl solutions.
Claims6
A process for preparing a polymer of diallyldimethylammonium fluoride having an intrinsic viscosity of at least about 0.1 deciliter/gram which comprises:
- providing an aqueous solution of about 10-70 weight percent of a substantially pure diallyldimethylammonium fluoride;
- purging said solution to remove oxygen therefrom;
- initiating polymerization of the purged monomer solution by addition thereto of a catalytic amount of a free-radical catalyst;
- conducting the polymerization reaction at a temperature of at least about 50.degree. C. until a polymer of an intrinsic viscosity of at least about 0.1 deciliters/gram is obtained;
- and thereafter recovering the polymer thus prepared.
2 more elements
Dependencies are inferred from the claim text.