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Aqueous reactive putty (I)

  • US 6,706,801 B1
  • Filed: 06/14/2001
  • Issued: 03/16/2004
  • Est. Priority Date: 12/21/1998
  • Status: Expired due to Fees
First Claim
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1. An aqueous, reactive binder composition for aqueous, reactive, filler compositions comprisinga) at least one emulsion copolymer which contains isocyanate-reactive groups and which is present in an aqueous dispersion or an emulsion, said copolymer being produced by polymerizing a monomer mixture of a1), a2), a3) and a4):

  • a1) from 50 to 85 wt. % of one or more hardening monomers, said hardening monomers producing homopolymers having glass transition temperature above 0°

    C., a2) from 5 to 30 wt. % of one or more plasticizing monomers, said plasticizing monomers producing homopolymers having glass transition temperatures below 0°

    C., a3) from 2 to 30 wt. % of one or more hydroxy-functional monomers, and a4) from 1 to 4 wt. % of one or more carboxyl- and/or carboxylate-functional monomers, wherein the sum of monomers a1) through a4) is 100 wt. % and b) at least one polyisocyanate which contains free isocyanate groups and has a viscosity of from 10 to 10,000 mPas/23°

    C. and a functionality of from 2.4 to 5.5.

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