HIGH SOLID-COATING COMPOSITION COMPRISING A MIXTURE OF A LOW MOLECULAR WEIGHT ACRYLIC POLYMER, A MEDIUM MOLECULAR WEIGHT ACRYLIC POLYMER, AND AN ALKYLATED MELAMINE RETICULATING AGENT, AND D-COATED SUBSTRATES 'SUCH A COMPOSITION

摘要

THE INVENTION RELATES TO FINISHING PRODUCTS, SUCH AS PAINTS. /P P IT RELATES TO A COATING COMPOSITION WITH A HIGH SOLID CONTENT, INCLUDING A BINDER WITH FILM-FORMING CONSTITUENTS AND A NON-AQUEOUS LIQUID VEHICLE; THE FILM-FORMING CONSTITUENTS CONSTITUTING A ACRYLIC POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT IN NUMBER OF 5000-20000, AND B AN ACRYLIC POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT OF 500-7500, POLYMERS A AND B HAVING A TENSION OH OF 2-10 AND DERIVED FROM METHYL METHACRYLATE, OF A METHACRYLATE OR OF AN ALCOYL ACRYLATE AND OF AN ACRYLATE OR OF A HYDROXYALCOYL METHACRYLATE; THE MOLECULAR WEIGHT DIFFERENCE BETWEEN A AND B IS AT LEAST 3000; AND C A FORMALDEHYDE-MELAMINE ALKYLAMINE CROSSLINKING AGENT; THE COMPOSITION ALSO CONTAINING AN ACID CATALYST. /P P APPLICATION TO THE FINISHING OF AUTOMOBILES, TRUCKS, ETC.