Patent ID: 6309707
Filing Date: 2001-10-30
Classification: C08G,C09D

Abstract:
A coating composition comprising:(a) a first component comprising a solution or dispersion of at least one binder in one or more organic, water-dilutable solvents, wherein the binder is selected from the group consisting of:(A1) acrylate copolymers having a number-average molecular weight of from 1000 to 30,000, an OH number of from 40 to 200 mg of KOH/g, and an acid number of from 5 to 150 mg of KOH/g;(A2) polyester resins having a number-average molecular weight of from 1000 to 30,000, an OH number of from 30 to 250 mg of KOH/g, and an acid number of from 5 to 150 mg of KOH/g;(A3) polyurethane resins having a number-average molecular weight of from 1000 to 30,000, an OH number of from 20 to 200 mg of KOH/g, and an acid number of from 5 to 150 mg of KOH/g,and mixtures thereof,wherein a 50% solution of the binder portion of the first component in ethoxyethyl propionate has a viscosity at 23.degree. C. of .ltoreq.2.5 dPa.multidot.s;(b) a second component comprising a crosslinking agent comprising(F1) at least 70% by weight of at least one member selected from the group consisting of nonblocked diisocyanates, nonblocked polyisocyanates, and mixtures thereof,(F2) from 2 to 20% by weight of at least one epoxide compound having at least 2 epoxide groups per molecule, and(F3) from 2 to 20% by weight of at least one amino resin(c) a third component that is essentially binder-free and contains water.