Patent · US Active

Process for the continuous preparation of water-absorbent polymers

US9255190B2 · kind B2 · utility

0Cited by

29References

7Claims

0Family size

Assignee

Evonik Industries AG · DE

Inventors

Harald Plochinger · Bühl, DE
Daniel Fricker · Rœschwoog, FR
Richard Walther · Bühl, DE
Marc Hager · Bischwiller, FR

Key dates

Filing date	Dec 14, 2012
Grant date	Feb 9, 2016
Priority date	—
Expiry date	Dec 14, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2333/02
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention relates generally to a process for the preparation of water-absorbent polymer particles, including the process steps of preparing particulate water-absorbent polymer and mixing the particulate water-absorbent polymer with an aqueous crosslinker solution and heat-treating the mixture of particulate water-absorbent polymer in a horizontally operated mixing device, wherein the horizontally operated mixing device is hydraulically driven. The invention also relates to water-absorbent polymer particles obtainable by such a process.

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