US 8,772,386 B2 · Copolymer dispersion for water whitening resistant coatings

Abstract

The present invention provides an aqueous copolymer dispersion comprising a copolymer and a polyamine, the copolymer comprises, as copolymerized units, at least one nonionic monomer selected from (meth)acrylate C6-C22 alkyl ester or Versatic vinyl ester; wherein the amount of the nonionic monomer ranges from 15% to less than 50% and wherein the amount of the polyamine ranges from 0.1 to 2%, by dry weight percentage based on the dry weight of the copolymer. The copolymer dispersion is suitable for use in coating compositions such as stone paints with significant improvement of water whitening resistance.

Claims12

Dependent claims

An aqueous copolymer dispersion comprising a copolymer and a polyamine, the copolymer comprising, as copolymerized units, at least one nonionic monomer selected from C6-C22 alkyl esters of (meth)acrylic acid and vinyl esters of C9-C11 tertiary-alkanoic acids;

and
0.05 to 3 wt % of a monomer having at lease one alkoxysilane functionality;
wherein the amount of the nonionic monomer ranges from 15 wt % to less than 50 wt % and wherein the amount of the polyamine ranges from 0.1 to 2 wt %, by dry weight percentage based on the total dry weight of the copolymer dispersion;
and
wherein all monomer percentage are based on the dry weight of the copolymer.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/448,565Filed 17 Apr 2012

Priority

CN 2011 1 011419018 Apr 2011

Published

US 2012/0264859 A118 Oct 2012

Granted

8 Jul 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

C08L 33/10
Of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical: homopolymers or…
C08L 31/02
Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon…:…
C08L 39/02
Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon…:…
C09D 131/02
Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one…:…

Copolymer dispersion for water whitening resistant coatings

Life of this patent

Copolymer dispersion for water whitening resistant coatings

Life of this patent

Abstract

Claims12