Patent · US Active

Polyarylether membranes

US7964697B2 · kind B2 · utility

0Cited by

17References

19Claims

0Family size

Assignee

General Electric Company · US

Inventors

Gary William Yeager · Niskayuna, US
Daniel Steiger · San Francisco, US
Yanshi Zhang · Solon, US

Key dates

Filing date	Aug 13, 2008
Grant date	Jun 21, 2011
Priority date	—
Expiry date	Aug 13, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D71/5211
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A membrane including a polyarylether having amide functionality. The polyarylether having amide functionality includes units from at least one of structure I or structure II:R1 and R2 are separate groups or are covalently connected to form a cyclic moiety; R1 and R2 are each, independently, hydrogen, C1-20 alkyl, C3-C30 aryl or a substituted C3-30 aryl; R3, R4, R5, R6, R7 and R8 are each, independently, a nitro group, C1-C12 alkyl, C3-C30 aryl or a combination; Y is hydrogen, C1-20 alkyl or C3-C30 aryl; k is from about 0 to about 10; a, b, c, d, e and f are each, independently, 0, 1, 2, 3 or 4; and m and n are each, independently, 0 or 1.

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