Method for producing a polyvinyl acetate dispersion
OwnerOliver SOMMER, Dagmar Wagenblasst +5inventors
InventorsOliver SOMMER, Dagmar Wagenblasst, Hans-Juergen Wolter, Anke Randall-Meineker, Ralf Gossen, Werner Gottstein, Sebastian Kottoff
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Abstract
A method for producing an aqueous adhesive dispersion, wherein a dispersion is produced from a sheet silicate having an SiO2 fraction and a hydrophobic ethylene/polyvinyl alcohol copolymer as protective colloid, and, in the presence of this dispersion, vinyl esters and optionally comonomers are polymerized.
Claims14
A method for producing an aqueous adhesive dispersion, wherein initially an aqueous dispersion of fillers and protective colloids is produced and subsequently vinyl ester and optionally comonomers are added to this dispersion and are polymerised, characterized in that as a protective colloid, at least one hydrophobic ethylene/polyvinyl alcohol copolymer and as a filler at least one sheet silicate containing SiO2 fractions are used.
A method for producing an aqueous adhesive dispersion comprising the steps of:
- (a) forming a dispersion of a plurality of fillers and a protective colloid;
- (b) adding a vinyl ester (co)monomer, and optionally an olefinically unsaturated (co)monomer, to the dispersion;
- and
- (c) polymerizing the (co)monomers;
- wherein the plurality of fillers is a sheet silicates that contain SiO2 fractions and the protective colloid is a hydrophobic ethylene polyvinyl alcohol copolymer.
Dependencies are inferred from the claim text.