Substantially non-caking compositions containing a normally coalescent copolymer of vinyl acetate and an ethylenically unsaturated organic carboxylic compound having at least one carboxyl group

Claim 1

A COMPOSITION OF MATTER COMPRISING SUBSTANTIALLY DRY PARTICLES OF A NORMALLY COALESCENT, WATER-INSOLUBLE ALKALI DISPERSIBLE COPOLYMER OF FROM ABOUT 90 TO 98 MOL PER CENT OF VINYL ACETATE AND FROM ABOUT 10 TO 2 MOL PER CENT OF AN ETHYLENICALLY UNSATURATED ORGANIC CARBOXYLIC COMPOUND CONTAINING FROM 3 TO 9 CARBON ATOMS AND HAVING A SINGLE CARBOXYL GROUP AND FROM ABOUT 5 TO 15% BY WEIGHT, BASED ON SAID PARTICLES OF COPOLYMER, OF SUBSTANTIALLY DRY PARTICLES OF AN ALKALINE ALKALI METAL INORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ANHYDROUS SODIUM BORATE AND THE CORRESPONDING POTASDROUS SODIUM CARBONATE, SODIUM BICARBONATE, TRISODIUM SIUM, LITHIUM AND CESIUM COMPOUNDS, THE PARTICLES OF SAID COPOLYMER BIENG CHARACTERIZED IN THAT THEY ARE NORMALLY GLOSSY BUT ARE DULL IN APPEARANCE IN THE MIXTURE, AND SUBSTANTIALLY NON-CAKING.