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Polymeric materials with substituted urea end groups

  • US 4,032,698 A
  • Filed: 10/29/1975
  • Issued: 06/28/1977
  • Est. Priority Date: 02/02/1973
  • Status: Expired due to Term
First Claim
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1. A polymeric material represented by the structure ##STR25## where Q is a resinous polymeric or copolymeric segment of(a) an ester of acrylic acid or methacrylic acid with an alkanol of 1-18 carbon atoms;

  • (b) styrene or acrylonitrile;

    (c) a vinyl ester whose ester moiety contains 2-18 carbon atoms;

    or(d) a vinyl ether;

    X is the residue of a chain transfer agent;

    Y is the residue of a di-, tri-, or tetraisocyanate radical after removal of isocyanate groups;

    A is the residue of a basic radical which, as an entity before reaction, has a pka value of 5-14, or a salt thereof; and

    m and n are 1, 2 or 3, the total not exceeding 4, provided that when n is 2 or 3, only one of A need be as defined.

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