Method of producing betaines,monomers and polymers containing betaine-type units and novel and useful copolymers thereby obtained
Abstract
Abstract AN IMPROVED METHOD IS PROVIDED FOR PRODUCING POLYMERS OF ORGANIC COMPOUNDS, SUCH AS ETHYLENICALLY UNSATURATED MONOMERS, CONTAINING A BETAINE-TYPE GROUP OF THE FORMULA: -N(+)(-R)2-R-COO(-) THE METHOD INVOLVES THE REACTION OF ACRYLIC ACID OR AQUEOUS METHYL ACRYLATE AND AN AMINOALKYL (METH) ACRYLATE OR AN N-AMINOALKYL (METH) ACRYLAMICE HAVING A BASIC TERTIARY NITROGEN ATOM IN THE PRESENCE OF A FREE RADICAL INITIATOR. THE MONOMERS UNDERGO VINYL ADDITION POLYMERIZATION TO FORM VALUABLE POLYMERS HAVING A WIDE VARIETY OF USES, SUCH AS FLOCCULANTS, RETENTION AIDS IN THE DEPOSITION OF POLYMERS, PIGMENTS, ETC. ON THE FIBERS IN A PAPER PULP, E.G., IN THE FORMATION OF MINERAL-FILLED PAPERS.
Inventors
- 👤 Norman Shachat
- 👤 Richard A Haggard
- 👤 Sheldon N Lewis
Bibliographic Details
Claims Analysis
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