| abstract |
PROCEDURE FOR THE PREPARATION OF POWDER LACQUER. IT CONSISTS OF MIXING 55-98% OF A COPOLYMER OF MOLECULAR MASS 1,000-20,000, CONSISTING OF 20-98% OF ESTER OF ACRYLIC AND / OR METHACRILIC ACID, 2-45% OF GLYCYDILIC ESTER OF ACRYLIC AND / OR METHACRYLIC ACID ANOTHER OLEPHINIC POLYMERIZABLE COMPOUND WITH AT LEAST ONE EPOXY GROUP AND 0-35% OF A VINYL COMPOUND; 2-45% DIISOCYANATE AND / OR POLYISOCYANATE; AND PIGMENTS AND AUXILIARIES; HOMOGENIZE THE MIXTURE THROUGH EXTRUSION AND, AFTER COOLING, SHREDDING TO OBTAIN POWDER. THESE LACQUES HAVE APPLICATIONS FOR SPRAYING ELECTROSTATIC POWDER OVER METALLIC SUBSTRATES. |