Wässrige Partikeldispersion und Verfahren zur Herstellung einer Wässrigen Partikeldispersion

Details

Veröffentlichungs-Nr.

EP3954744

Aktenzeichen

EP20191024

Anmeldetag

14. August 2020

Veröffentlichung

6. März 2024

Erteilung

6. März 2024

Rechtsraum

EP

IPC

C09D11/023

Abstract

The present invention relates to a process for producing an aqueous particle dispersion comprising the steps of: a) providing a dispersion consisting of water and solid core particles, b) providing an aqueous solution of a water-soluble, interfacially-active polymer having a molecular weight of more than 10 kDa, c) mixing said aqueous dispersion of solid core particles with said aqueous polymer solution, d) removing free polymer from the obtained mixture; wherein, in step c), the amount of the water-soluble, interfacially-active polymer mixed with said aqueous dispersion of solid core particles exceeds the amount of polymer required to coat the surface of each of the solid core particles with a monolayer of the polymer, and wherein step d) is repeated until the surface tension of the resulting modified particle dispersion is in a range of from 60 to 72 mN/m, preferably from 65 to 72 mN/m and more preferably from 67 to 72 mN/m. The present invention also relates to an aqueous particle dispersion exhibiting a homogenous drying pattern as well as a film made thereof and the use of the aqueous particle dispersion.

Anmelder

Firma

Friedrich-Alexander-Universität Erlangen-Nürnberg

Land

🇩🇪 Deutschland

Fachgebiete