THERMOSETTING LIQUID COATING COMPOSITION FOR ALUMINUM WHEEL AND METHOD OF COATING ALUMINUM WHEEL

摘要

A thermosetting liquid coating composition for aluminum wheels which comprises: (A) a hydroxylated and carboxylated acrylic resin having a hydroxy value of 90 to 150 mg-KOH/g and an acid value of 1 to 30 mg-KOH/g obtained by copolymerizing a monomer mixture comprising a C6-18 alkyl ester of (meth)acrylic acid, an unsaturated monomer containing secondary hydroxy, and a carboxylated unsaturated monomer, the content of the C6-18 alkyl ester of (meth)acrylic acid and that of the unsaturated monomer containing secondary hydroxy being 10 to 50 wt.% and 8 to 40 wt.%, respectively; and (B) an amino resin. Also provided is a method of coating an aluminum wheel with the composition.