Patent · US Expired

Separation of components of organic liquids

US6913696B1 · kind B1 · utility

10Cited by

13References

5Claims

0Family size

Assignee

Pervasiv LTD · IL

Inventors

Emanuel Korngold · Beer Sheva, IL
Elisheva Zisner · Raanana, IL
Reuven Wachs · Jerusalem, IL

Key dates

Filing date	Mar 16, 2000
Grant date	Jul 5, 2005
Priority date	—
Expiry date	Mar 16, 2020

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2323/30
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A pervaporation process for separating organic liquid mixtures of components having differing polarities, uses an ion exchange membrane which comprises a polymerized alkene including pendant groups of formula SO2N(R)—A—QX where R is H or alkyl, A is alkylene, Q is quaternary ammonium, and X is a negatively-charged counter-ion, the sulfur content of the membrane being in the range 3-10 wt. %.

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