Patent · US Active

Process for producing dispersion powders

US8984765B2 · kind B2 · utility

1Cited by

3References

12Claims

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 25, 2012
Grant date	Mar 24, 2015
Priority date	—
Expiry date	Jul 25, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2331/04
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process for producing dispersion powders by spray drying of aqueous polymer dispersions and addition of antiblocking agents in a rotary atomization dryer, wherein the antiblocking agent is conveyed by delivery air, wholly or partly, into an annular gap which is formed by a moulding arranged concentrically around the housing of the rotary atomizer, and which ends at a distance above the upper edge of the atomizer plate of the rotary atomizer.

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