Patent · US Active

Process for producing dispersible powders

US9051440B2 · kind B2 · utility

0Cited by

3References

11Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Michael Herbert · Naperville, US
Jochen Ring · Herxheim, DE
Stefan Killat · Burghausen, DE
Bernd Gerstenberger · Burghausen, DE

Key dates

Filing date	Jul 23, 2012
Grant date	Jun 9, 2015
Priority date	—
Expiry date	Jul 23, 2032

Classification

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

Abstract

A process for producing dispersible powders by spray-drying aqueous polymer dispersions and adding antiblocking agent, wherein antiblocking agents present in agglomerated form and having a particle size from 10 μm to 250 μm, or having a particle size from 5 mm to 5 cm in the case of agglomerates in the form of extrudates, are fed in whole or in part by a transport gas into the spray-drying device and are comminuted to a particle size from 0.01 μm to 5 μm, or, in the case of extrudates, to a particle size from 2 μm to 60 μm.

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