Patent · US Expired

Method of removing or of accumulating heavy metal ions from an aqueous solution

US5173275A · kind A · utility

2Cited by

4References

2Claims

0Family size

Assignee

BASF SE

Inventors

Gernot Koehler · Ludwigshafen, DE
Roger Klimesch · Ransbach-Baumbach, DE

Key dates

Filing date	Jun 12, 1991
Grant date	Dec 22, 1992
Priority date	—
Expiry date	Jun 12, 2011

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/20
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method of removing or of accumulating heavy metal ions from an aqueous solution by contacting the latter with an ethylene copolymer, in which a copolymer of ethylene with (meth)acrylic acid and a (meth)acrylate is used, in which the carboxyl groups may be neutralized by metal ions to an extent of 100% or less.

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