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Carboxyl-containing acrylate copolymer and epoxy resin

  • US 5,691,419 A
  • Filed: 02/01/1994
  • Issued: 11/25/1997
  • Est. Priority Date: 06/17/1991
  • Status: Expired due to Term
First Claim
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1. A coating agent which comprises, as the binding agent, at least one polymer containing carboxyl groups and, as the hardener, at least one epoxy resin having on average more than one epoxide group per molecule, wherein:

  • the binding agent comprises at least one acrylate copolymer (A) which comprises carboxyl groups and is prepared by solution polymerization using from 0.4 to 2.5% by weight, based on the total weight of the monomers, of one or more polysiloxane macromonomers a1 having a number average molecular weight of 1000 to 40,000 and on average 0.5 to 2.5 ethylenically unsaturated double bonds per molecule, wherein copolymer A has a number average molecular weight of between 5000 and 25,000.

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