Patent ID: 6624227
Filing Date: 2003-09-23
Classification: C01P,C08F,C09C,C09D

Abstract:
An aqueous coating composition comprising a stabilized film-forming polymer, metallic pigments and a corrosion inhibitor which is a hydrophobic-substituted reaction product of (a) and (b), wherein:(a) is 5 to 95 weight percent of a phosphonic acid derivative consisting of one or wherein R and R1 are free from nitrogen atom and are selected from the group consisting of an aliphatic, cycloaliphatic and aromatic substituent having 1 to 25 carbon atoms and optionally, Up to 10 heteroatoms of at least one of oxygen, phosphorus and silicon; and(b) is 5 to 95 weight percent of a hydroxy-functional addition polymer comprising a styrene-allyl alcohol polymer having a weight average molecular weight of oxygen 1,000 to 30,000; wherein said metallic pigments in said aqueous coating composition are stabilized from gassing for three weeks.