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Curable, weldable coating compositions

  • US 6,984,674 B2
  • Filed: 03/18/2004
  • Issued: 01/10/2006
  • Est. Priority Date: 02/08/2001
  • Status: Expired due to Term
First Claim
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1. An aqueous-based curable coating composition comprising:

  • a. a resinous binder comprising i. a reaction product of an epoxy-containing polymer with a compound containing phosphorus acid groups, the reaction product having reactive functional groups, ii. a curing agent having functional groups reactive with the functional groups of (i);

    b. an electroconductive pigment dispersed in (a) such that the weight ratio of b to (i) plus (ii) is within the range of 0.5 to 9.0;

    1; and

    c. water, the coating composition being characterized such that when it is deposited and cured on a metal substrate, the cured coating is weldable.

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