Interpolymer latices and the process for preparing the same

Claim 1

AN AQUEOUS INTERPOLYMER LATEX CAPABLE OF DRYING TO FORM A CONTINUOUS ADHERENT FILM AT A TEMPERATURE OF ABOUT 10* C., SAID INTERPOLYMER BEING AN INTERPOLYMER OF (1) ABOUT 35-60 PARTS BY WEIGHT OF AN UNSATURATED ESTER TAKEN FROM THE GROUP CONSISTING OF STRAIGHT-CHAIN AND BRANCHED-CHAIN SATURATED ALIPHATIC ALCOHOL ESTERS OF ACRYLIC AND METHACRYLIC ACID CONTAINING A TOTAL OF ABOUT 5-20 CARBON ATOMS IN THE ALCOHOL RADICAL OF WHICH ABOUT 5-14 CARBON ATOMS COMPRISE THE LONGEST CONTINUOUS CHAIN THEREOF, (2) ABOUT 3-10 PARTS BY WEIGHT OF AN UNSATURATED NITRILE TAKEN FROM THE GROUP CONSISTING OF ACRYLONITRILE AND METHACRYLONTRILE, (3) ABOUT 2-5 PARTS BY WEIGHT OF AN UNSATURATED MONOCARBOXYLIC ACID TAKEN FROM THE GROUP CONSISTING OF ACRYLIC ACID, METHACRYLIC ACID, CINNAMIC ACID, ATROPIC ACID AND CROTONIC ACID AND, CORRESPONDINGLY, (4) ABOUT 60-25 PARTS BY WEIGHT OF A MONOVINYLIDENE AROMATIC HYDROCARBON, THE INTERPOLYMER PARTICLES IN SAID LATEX HAVING AN AVERAGE DIAMETER OF ABOUT 0.1 TO 0.5 MICRON.