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BIO-RENEWABLE SEQUENTIAL VINYL POLYMER

  • US 20140065435A1
  • Filed: 12/20/2011
  • Published: 03/06/2014
  • Est. Priority Date: 12/20/2010
  • Status: Active Grant
First Claim
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1. An aqueous polymer dispersion having a minimum film forming temperature below 50°

  • C. comprising a vinyl polymer derived from olefinically unsaturated monomers, with at least two phases comprising;

    A) 40 to 90 wt % of a vinyl polymer A having a glass transition temperature in the range of from −

    50 to 30°

    C.; and

    B) 10 to 60 wt % of a vinyl polymer B having a glass transition temperature the range of from 50 to 130°

    C.;

    where 10% by weight (preferably at least 20 wt %) of the total amount of monomer used to form vinyl polymer A and vinyl polymer B is derived from at least one bio-renewable olefinically unsaturated monomer;

    the weight percentage of monomers in A and B are calculated based on the total amount of olefinically unsaturated monomers used to prepare polymer A and polymer B=100%; and

    wherein vinyl polymer A comprises 0.1 to 10 wt % of at least one acid-functional olefinically unsaturated monomer where the weight percentage of acid functional monomer is calculated based on the total amount of olefinically unsaturated monomer used to prepare polymer A=100%,

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