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Fluorochemical composition comprising a polymer derived from a fluorochemical urethane (meth)acrylate monomer for imparting stain release properties to a substrate

  • US 6,383,633 B1
  • Filed: 09/24/1999
  • Issued: 05/07/2002
  • Est. Priority Date: 05/14/1997
  • Status: Expired due to Term
First Claim
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1. A method of treatment of a substrate comprising the step of contacting said substrate with a fluorochemical composition comprising a polymer derived from polymerization of monomer corresponding to the following general formula (I):

  • embedded imagewherein;

    Rf is selected from the group consisting of perfluorinated or partially fluorinated aliphatic groups;

    L1 and L2 each represent an organic divalent linking group and can be the same or different;

    L3 represents an organic linking group with a valence of n+1;

    t is 0 or 1;

    n is an integer of 2 to 20;

    A1 and A2 each independently represent a divalent residue obtained by removing two —

    NCO groups from a corresponding diisocyanate, and can be the same or different;

    X1 and X2 are each independently selected from the group consisting of O, NH and S;

    B1 represents a hydrophilic residue obtained by removing the groups HX1 and HX2 from a compound HX1

    B1

    X2H that comprises a poly(oxyalkylene) group;

    G represents a free radical polymerizable group; and

    s is 0 or 1, with the proviso that when s is 0, L2 represents a hydrophilic segment comprising a poly(oxyalkylene) group or said polymer is derived from a copolymerization of a monomer according to formula (I) and a poly(oxyalkylene) group containing monomer.

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