Aqueous polymer dispersions containing (c1-c8)-alkyl acrylate/methacrylic acid copolymer salt thickeners

Claim 1

A COMPOSITION COMPRISING AN AQUEOUS DISPERSION CONTAINING 10 TO 60% BY WEIGHT OF A WATER-INSOLUBLE ADDITION POLYMER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND SYNETHETIC ADDITION POLYMERS AS DEFINED HEREIN AND CONTAINING, AS A THICKENING AGEMT, FROM 0.1 TO 2%, ON THE WEIGHT OF THE WATER INSOLUBLE POLYMER, OF A WATERSOLUBLE SALT OF A COPOLYMER OF 35 TO 56% BY WEIGHT OF METHACRYLIC ACID AND 65 TO 44% BY WEIGHT OF AT LEAST ONE ESTER OF ACRYLIC ACID WITH A SATURATED ALCOHOL HAVING FROM 1 TO 8 CARBON ATOMS, AT LEAST 90% OF THE ESTER COMPONENT CONSISTING OF AT LEAST ONE SATURATED ALCOHOL HAVING FROM 1 TO 3 CARBON ATOMS, SAID COPOLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 100,000, AND THE SYNETHETIC ADDITION POLYMERS BEING SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF A MEMBER OF SELECTED FROM THE GROUP CONSISTING OF STYRENE, VINYL ACETATE, CHLOROPRENE, ESTERS OF ARCYLIC ACID WITH SATURATED ALCOHOLS HAVING 1 TO 8 CARBON ATOMS, AND ESTERS OF METHACRYLIC ACID WITH SATURATED ALCOHOLS HAVING 1 TO 8 CARBON ATOMS, COPOLYMERS OF STYRENE AND BUTADIENE, COPOLYMERS OF ACRYLONITRILE AND BUTADIENE, COPOLYMERS OF VINYL CHLORIDE AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF VINYLIDENE CHLORIDE, ARCYLONITRILE, AND VINYL ACETATE, COPOLYMERS OF STYRENE AND MALEIC ANHYDRIDE, COPOLYMERS OF AT LEAST TWO MEMBERS SELECTED FROM THE GROUP CONSISTING OF ARCYLIC ACID ESTERS AND METHACRYLIC ACID ESTERS WITH SATURATED ALCOHOLS HAVING 1 TO 8 CARBON ATOMS, AND COPOLYMERS OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ARCYLIC ACID ESTERS AND METHACRYLIC ACID ESTERS WITH A SATURATED ALCOHOLS HAVING 1 TO 8 CARBON ATOMS WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE, VINYL ACETATE, ACRYLONITRILE, SYTRENE, AND METHACRYLIC ACID.