Polymerization of carboxylic acid monomers and alkyl acrylate esters in chlorofluoroethane
AssigneeThe B. F. Goodrich Company
InventorRobert K. Schlatzer, Jr.
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Abstract
Improved copolymers of unsaturated copolymerizable carboxylic acid monomers and one or more alkyl acrylate esters containing 10 to 30 carbon atoms which serve as efficient thickeners of aqueous solutions, even in the presence of substantial amounts of inorganic salts such as sodium chloride are prepared by conducting the polymerization of the comonomers in a chlorofluoroethane.
Claims10
A process for preparing copolymers of unsaturated copolymerizable carboxylic acid monomers and acrylic acid esters of the formula ##EQU5## wherein R contains 10 to 30 carbon atoms and R' is hydrogen or methyl, comprising conducting copolymerization of from 95 to 50 weight percent of said acid monomer and 5 to 50 percent of said ester monomer in the presence of a haloalkane containing 1 to 2 carbon atoms and at least 4 halogen atoms.
Dependencies are inferred from the claim text.