Coating compositions containing acrylic polymers polymerized in the presence of cellulose acetate butyrate

Claim 1

A COATING COMPOSITION COMPRISING AN INTIMATE MIXTURE OF THE FOLLOWING COMPONENTS A AND B: A. ABOUT 60 - 90% BY WEIGHT OF A DISPERSION OF COPOLYMER OBTAINED BY COPOLYMERIZING A MIXTURE OF ACRYLIC MONOMERS WHICH CONSIST OF A. ABOUT 30-96% BY WEIGHT OF AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF ALKYL ACRYLATE MONOMERS AND ALKYL METHACRYLATE MONOMERS, WHEREIN THE ALKYL GROUPS HAVE 1 - 20 CARBON ATOMS, AND B. ABOUT 70-4% BY WEIGHT OF AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF HYDROXYALKYL ACRYLATE MONOMERS AND HYDROXYALKYL METHACRYLATE MONOMERS WHEREIN THE ALKYL GROUPS HAVE 2-20 CARBON ATOMS, AN A,B-ETHYLENICALLY UNSATURATED CARBOXYLIC ACID, ACRYLAMIDE, METHACRYLAMIDE, METHYLOL ACRYLAMIDE, METHYLOL METHACRYLAMIDE, BUTOXYMETHYL ACRYLAMIDE, BUTOXYMETHYL METHACRYLAMIDE, BUTOXYMETHYL ACRYLAMIDE, AND BUTOXYETHYL METHACRYLAMIDE IN THE PRESENCE OF A SOLUTION OF CELLULOSE ACETATE BUTYRATE WITH A PEROXIDE CATALYST, THE PROPORTION OF COMPONENT (A) TO CELLULOSE ACETATE BUTYRATE BEING BETWEEN ABOUT 50 AND 2, AND B. ABOUT 10 - 40% BY WEIGHT OF AMINO RESIN, WHEREIN THE CELLULOSE ACETATE BUTYRATE HAS ABOUT 53-3% BY WEIGHT OF BUTYRYL CONTENT, ABOUT 2-14% BY WEIGHT OF ACETYL CONTENT AND ABOUT 0.5-3% BY WEIGHT OF HYDROXYL CONTENT, AND IN WHICH THE CONTENT OF CELLULOSE ACETATE BUTYRATE IN THE CELLULOSE ACETATE BUTYRATE SOLUTION IS ABOUT 2-30% BY WEIGHT.