Patent ID: 6388021
Filing Date: 2002-05-14
Classification: C09D,C23C,Y10T

Abstract:
An acrylic resin-containing metal surface treatment composition that confers lubricity on metal surfaces comprising:(1) a water-soluble, water-dispersable or emulsifiable acrylic resin comprising (1a) an amino group, an ammonium group, or both; (1b) a hydroxyl group; and (1c) at least one hydrophobic group, introduced by copolymerization of a monomer having the structure shown by the following chemical formula (VI): â€ƒwhere R16 is a straight, branched or cyclic group having from 4-20 carbon atoms, and R17 is hydrogen or methyl, and (2) a heavy metal or one of its salts; wherein said acrylic resin comprises 1-10 of at least one group selected from amino and ammonium, 1-10 of hydroxyl groups and 1-5 of hydrophobic groups per 1000 units of its molecular weight; and wherein the copolymerization ratios of the monomers of the acrylic resin copolymer comprising said acrylic resin are from 5-60 weight percent of amino or ammonium group-containing acrylic monomer, from 20-80 weight percent of hydroxyl group-containing acrylic monomer, from 5-50 weight percent hydrophobic group-containing acrylic monomer, and from 0-30 weight percent of at least a monomer selected from acrylic acid, methacrylic acid, maleic acid, itaconic acid and acrylonitrile.