MATIERES DE REVETEMENT A BASE DE COPOLYMERES ACRYLIQUES, DE COMPOSES EPOXY ET DE COMPOSES POLYOLEFINIQUES CHLORES POUR DES ARTICLES EN RESINES POLYOLEFINIQUES

DES MATIERES DE REVETEMENT POUR DES ARTICLES EN RESINES POLYOLEFINIQUES COMPRENNENT UN COPOLYMERE ACRYLIQUE AYANT UN MONOMERE ACRYLIQUE CONTENANT DE L'AZOTE BASIQUE ET D'AUTRES MONOMERES QUI SONT COPOLYMERISABLES AVEC LE MONOMERE ACRYLIQUE, UN COMPOSE EPOXY AYANT PLUS DE DEUX RADICAUX EPOXY COMPRIS DANS UNE MOLECULE, ET, EN OUTRE, UN COMPOSE CHLORE D'HOMOPOLYMERE ETOU DE COPOLYMERE DE POLYPROPYLENE ETOU DE POLYETHYLENE. A coating composition suitable for painting onto a polyethylene or polypropylene article comprises by weight:- (a) 100 parts of an acrylic copolymer containing 0.3 to 30 wt.% of an acrylic monomer containing basic nitrogen, e.g. in an amino ester of (meth)acrylic acid, and 99.8 to 30 wt.% of another monomer, (b) 0.5 to 30 parts of an epoxy compound having three or more epoxy radicals, which bridge reacts with copolymer (a), and (c) 1 to 100 parts of a chlorinated polyethylene or polypropylene, of 20 to 40 molar % chlorination. An organic solvent is also included. The composition can be prepared in two solutions containing respectively (i) the component (a) and preferably a pigment, and (ii) components (b) and (c). The composition adheres well. It can be overpainted if desired.