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Process for coating heat resistant substrates with two component stoving compositions

  • US 5,304,400 A
  • Filed: 01/15/1992
  • Issued: 04/19/1994
  • Est. Priority Date: 01/22/1991
  • Status: Expired due to Fees
First Claim
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1. A process for preparing a coated, substrate which comprisesI) coating the substrate with a coating composition comprisina) a solution or dispersion containinga1) 100 parts by weight of at least one hydroxyl-functional polyacrylate resin in dissolved or dispersed form, wherein the resin has a hydroxyl value of 15 to 200 mg KOH/G solid resin, an acid value of 5 to 250 mg KOH/G solid resin and a total content of chemically incorporated carboxylate and/or sulfonate groups of 8 to 450 milliequivalents per 100 g of solids,a2) 25 to 395 parts by weight of water anda3) 5 to 125 parts by weight of at least one organic solvent having a boiling point or boiling point range at 1013 mbar of 100°

  • to 300°

    C. andb) at least one organic polyisocyanate in a quantity corresponding to an equivalent ratio of isocyanate groups of component b) to isocyanate-reactive groups of component a1) of 0.7;

    1 to 3;

    1, andII) curing the coating composition at a temperature of 40°

    to 160°

    C. to form a bubble-free coating.

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