Patent · US Expired

Process for preparing pulverulent polymers by drying aqueous polymer dispersions

US6444729B1 · kind B1 · utility

3Cited by

9References

8Claims

0Family size

Assignee

BASF SE

Inventors

Joachim Pakusch · Ludwigshafen, DE
Maximilian Angel · Mutterstadt, DE
Peter Claassen · Ludwigshafen, DE
Andree Dragon · Speyer, DE

Key dates

Filing date	Jul 6, 2000
Grant date	Sep 3, 2002
Priority date	—
Expiry date	Jul 21, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2103/0057
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention provides:for a process for preparing pulverulent polymers by drying aqueous polymer dispersions in the presence of copolymers based on ethylenically unsaturated C3-C6 carboxylic acids and their hydroxyalkyl esters as assistants;polymer powders obtainable by this process;aqueous polymer dispersions obtainable by free-radical aqueous emulsion polymerization of ethylenically unsaturated monomers in the presence of the novel copolymers, and the powders obtainable therefrom, anda polymeric binder as well as and mineral building materials which comprise the novel polymer powders.

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