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AQUEOUS DISPERSION OF KETO- AND PHOSPHORUS ACID MONOMER-FUNCTIONALIZED POLYMER PARTICLES

  • US 20190322889A1
  • Filed: 03/12/2019
  • Published: 10/24/2019
  • Est. Priority Date: 04/18/2018
  • Status: Active Grant
First Claim
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1. A coating composition comprising a) an aqueous dispersion of acrylic or styrene-acrylic polymer particles functionalized with from 0.5 to 10 weight percent structural units of a monomer with keto functionality and from 0.05 to 5 weight percent structural units of a phosphorus acid monomer based on the weight of the polymer particles;

  • b) from 0.1 to 5 weight percent of a dispersant, based on the dry weight of the composition, and having a Mw in the range of from 500 to 50,000 Daltons and comprising from i) 5 to 90 weight percent structural units of a carboxylic acid monomer; and

    ii) from 0.5 to 10 weight percent structural units of a monomer with keto functionality; and

    c) a dihydrazide crosslinking agent;

    wherein the solids content of polymer particles is from 5 to 60 weight percent based on the weight of the composition.

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