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Graft Polymers with cross-linked polyester elastomers

  • US 4,252,704 A
  • Filed: 06/04/1979
  • Issued: 02/24/1981
  • Est. Priority Date: 06/04/1979
  • Status: Expired due to Term
First Claim
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1. In a polymeric composition comprising from 80 to 30 wt% of at least one vinyl monomer graft polymerized in the presence of from 20 to 70 wt% of a polyester, the improvement wherein said polyester is a cross-linked, aliphatic polyester elastomer prepared by the steps ofA. Providing a solution comprising from 95 to 80 parts by weight of a water-immiscible organic solvent, from 5 to 20 parts by weight of an aliphatic, polyester elastomer and from 0.5 to 5 wt%, based on polyester, of an organic peroxide;

  • B. Mixing said solution with an equal volume of water containing from 1 to 10 wt%, based on polyester, of a surfactant;

    C. Passing said mixture through a homogenizer to form an emulsion;

    D. Heating said emulsion to remove said solvent; and

    E. Further heating said emulsion to cross-link said polyester and form a stable latex.

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