Patent ID: 7491759
Filing Date: 2009-02-17
Classification: C08G,C09D

Abstract:
1. A thermally curable one-component coating material having a solids content of from 40 to 80% by weight and an electrical resistance in the range from 600 to 1300 kΩ, comprising, based in each case on the coating material, (A) from 18 to 25% by weight, calculated as solids, of at least one (meth)acrylate (co)polymer with a hydroxyl number of from 80 to 240 mg KOH/g, an acid number of from 0 to 40 mg KOH/g, a number-average molecular weight of from 1500 to 20,000 daltons, a glass transition temperature of from −40 to +80°C., and a primary hydroxyl group content >50 equivalent %, based on the total amount of hydroxyl groups present in (A), (B) from 2 to 7% by weight, calculated as solids, of at least one tris(alkoxycarbonylamino)triazine, (C) from 2 to 8% by weight, calculated as solids, of at least one polyisocyanate blocked with at least one of pyrazole and substituted pyrazole, (D) from 3 to 9% by weight, calculated as solids, of at least one water-soluble, reactive melamine-formaldehyde resin having methylol groups wherein about 60 mol % or greater of the methylol groups are etherified and the resin having on average more than 0.5 imino groups in the molecule, (E) from 3 to 9% by weight, calculated as solids, of at least one water-insoluble, melamine-formaldehyde resin requiring no acid catalysts for thermal crosslinking, (F) from 0 to 40% by weight, calculated as solids, of at least one additive, and (G) from 20 to 60% by weight of at least one organic solvent.