Patent · US Active

Weakly acidic cation exchangers

US7238762B2 · kind B2 · utility

0Cited by

5References

16Claims

0Family size

Assignee

LANXESS Deutschland GmbH · DE

Inventors

Wolfgang Podszun · Neunburg vorm Wald, DE
Olaf Halle
Reinhold Klipper · Neunburg vorm Wald, DE
Rudolf Wagner · Fontnas, CH
Pierre Vanhoorne · Monheim, DE
Wolfgang Zarges · Neunburg vorm Wald, DE

Key dates

Filing date	Aug 25, 2006
Grant date	Jul 3, 2007
Priority date	—
Expiry date	Aug 25, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2810/20
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a process for producing weakly acidic cation exchangers of the polymethacrylic acid type by alkaline saponification of a crosslinked copolymer of alkyl methacrylate and methacrylic acid.

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