Aqueous emulsion polymers comprising stable epoxy groups

Aqueous emulsion polymers comprising stable epoxy groups

  • CN 1,958,673 A
  • Filed: 10/31/2006
  • Published: 05/09/2007
  • Est. Priority Date: 11/01/2005
  • Status: Active Application
First Claim
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1. aqueous polymer dispersion, it comprises multistage polymer beads, weight in described polymer beads is benchmark, this polymer beads comprises one or more first polymkeric substance and one or more second polymkeric substance of 20-80 weight %, described first polymkeric substance be by make following monomer a) and b) the first monomer mixture polymerization form:

  • a) one or more nonionic ethylenically unsaturated monomers, b) in described monomer a) and b) gross weight, one or more ethylenic unsaturated acid monomers of 0.5-10 weight %;

    Described second polymkeric substance is by in the presence of the water dispersion of described one or more first polymkeric substance, by the second monomer mixture polymerization is prepared, gross weight in described second monomer mixture is a benchmark, described second monomer mixture comprise 1-90 weight % one or more comprise the ethylenically unsaturated monomers of one or more epoxy group(ing)Wherein, be benchmark in the mole number of epoxy group(ing) in described second monomer mixture, described dispersion stores 10 days under 60 ℃

    sealed vessel after, 90 moles of % or more described epoxy group(ing) remain in the described water dispersion.

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