Patent · US Active

Continuous and modular process for producing water-redispersible polymer powder compositions

US12060444B2 · kind B2 · utility

0Cited by

6References

6Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Bernhard Eckl · Burghausen, DE
Michael Kalchauer · Burghausen, DE
Jessica Seidel · Zangberg, DE
Hans-Peter Weitzel · Reischach, DE

Key dates

Filing date	Dec 21, 2016
Grant date	Aug 13, 2024
Priority date	—
Expiry date	Jul 16, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29B2009/163
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for producing polymer powder compositions which are redispersible in water and which are based on polymerisates of one or more ethylenically unsaturated monomers. In a first step, an aqueous polymerisate dispersion is produced by means of a radically initiated polymerization of one or more ethylenically unsaturated monomers in an aqueous medium, said polymerisate dispersion being convened into the polymer powder composition which is redispersible in water by means of a diving process. The invention is characterized in that the polymerization and the drying process are each carried out in a continuous manner, and the polymerization and the diving process are carried out in separate interconnected modules.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.