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Self-crosslinking aqueous dispersions

  • US 5,919,716 A
  • Filed: 08/10/1998
  • Issued: 07/06/1999
  • Est. Priority Date: 09/18/1996
  • Status: Expired due to Term
First Claim
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1. A method for coating a woven substrate, comprising:

  • (1) applying to said substrate a polymer composition; and

    (2) drying said substrate containing said polymer composition;

    wherein said polymer composition comprises;

    (A) a vinyl polymer component present in an amount from 20.0 to 65.0 weight percent, based on the total amount of said backcoating formulation, said vinyl polymer comprising the polymerization product of;

    (a) at least one first, copolymerizable α



    -ethylenically unsaturated monomer containing at least one hydroxyl group, present in an amount from 2.0 to 25.0 weight percent based on the total amount of α



    -ethylenically unsaturated copolymerizable monomers;

    (b) a second copolymerizable α



    -ethylenically unsaturated monomer containing no hydroxyl groups, present in an amount from 75.0 to 98.0 weight percent, based on the total amount of ethylenically unsaturated copolymerizable monomers;

    said second monomer comprising;

    (i) 40.0 to 98.0 weight percent, based on the total amount of monomers, of a C1 -C18 alkyl (meth)acrylate,(ii) optionally, up to 40.0 weight percent, based on the total amount of monomers, of a styrenic monomer,(iii) optionally, up to 10.0 weight percent, based on the total amount of monomers, of (meth)acrylamide,(iv) optionally, up to 20.0 weight percent, based on the total amount of monomers, of (meth)acrylonitrile,(v) optionally, up to 20.0 weight percent, based on the total amount of monomers, of an additional copolymerizable monomer, and(vi) optionally, up to 2.0 weight percent, based on the total amount of monomers, of a copolymerizable crosslinkable monomer;

    (B) a free glyoxal crosslinker component present in an amount from 0.1 to 15.0 weight percent, based on the total amount of component (A);

    (C) an additive component present in an amount up to 2.0 weight percent, based on the total amount of component (A); and

    (D) the remainder of the formulation being a solvent.

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