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Hardenable coating compositions

  • US 4,081,492 A
  • Filed: 07/22/1976
  • Issued: 03/28/1978
  • Est. Priority Date: 07/30/1975
  • Status: Expired due to Term
First Claim
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1. A coating composition comprising as binder a reaction product of a polyepoxide with more than one 1,2-epoxide group per molecule, wherein its epoxide groups have been reacteda. with 0.01 to 0.5 NH-equivalents, based on one epoxide equivalent of ammonia or of an aliphatic or cycloaliphatic primary amine or of ε

  • -aminocaproic acid or of a mixture of the aforementioned nitrogen compounds; and

    subsequentlyb. with 0.40 to 0.90 carboxyl equivalents, based on one epoxide equivalent, of acrylic acid or methacrylic acid or of a mixture of acrylic and methacrylic acid; and

    finallyc. with 0.09 to 0.50 carboxyl equivalents, based on one epoxide group, of a saturated aliphatic, monocarboxylic acid,so that at least 80% of the epoxide groups originally present have been reacted through these three component stages.

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