Coating composition containing epoxy resin and copolymer of ring-alkylated styrene

Claim 1

A COATING COMPOSITION WHICH COMPRISES ESSENTIALLY A LINEAR THERMOPLASTIC COPOLYMER OF MORE THAN 50 PARTS OF A RING-ALKALATED STYRENE AND AT LEAST 15 PARTS OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF METHYL AND ETHYL ACRYLATES AND METHYL AND ETHYL METHACRYLATES, AND FROM 2 TO 14 PARTS OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ACID, THE TOTAL PARTS BEING 100, IN ADMIXTURE WITH FROM 15% TO 55%, BY WEIGHT OF THE COPOLYMER, OF A LOW MOLECULAR WEIGHT POLYMERIC CONDENSATION PRODUCT OF DIPHENYLOLPROPANE WITH EPICHLOROHYDRIN, SAID CONDENSATION PRODUCT HAVING AN EPOXIDE CONTENT OF AT LEAST 7.5% BY WEIGHT AND A MELTING POINT NOT EXCEEDING 75*C., AND A GARDNER VISCOSITY NOT EXCEEDING 1.65 POISES AS A 40% SOLUTION IN ETHYLENE GLY COL MONOBUTYL ETHER, AND FROM 0.5% TO 5.0% BY WEIGHT OF SAID POLYMER AND CONDENSATION PRODUCT JOINTLY, OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF AMINES AND QUATERNARY AMMONIUM HYDROXIDES HAVING AT LEAST ONE ALKYL GROUP OF FROM 12 TO 18 CARBON ATOMS ATTACHED TO THE NITROGEN ATOM.