Patent · US Active

Method for coating water-absorbing polymer particles

US8603577B2 · kind B2 · utility

0Cited by

2References

20Claims

0Family size

Assignee

BASF SE

Inventors

Holger Barthel · Oftersheim, DE
Martin Wendker · Ludwigshafen am Rhein, DE
Reiner Witt · St. Leon-Rot, DE

Key dates

Filing date	Mar 17, 2008
Grant date	Dec 10, 2013
Priority date	—
Expiry date	Apr 2, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2300/14
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process for preparing water-absorbing polymer particles by coating water-absorbing polymer particles with a particulate solid in a mixer, wherein the particulate solid is dispersed by means of a gas stream and the supply of the dispersed particulate solid in the mixer ends below the product bed surface.

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