Mixed matrix membranes

Overview

Information

Number
7109140
Application
10/410599
Filing date
04/10/2003
Issue date
09/19/2006
Inventor(s)
Eva Marand, Todd W. Pechar, Michael Tsapatsis
US Classification
502/4; 502/64; 502/77
View at USPTO

Citations

Medal, L.P. (1)
Worcester Polytechnic Institute (1)
NA (1)
Mitsui Engineering & Shipbuilding Co. (1)
bayer intellectual property (1)

Abstract

Abstract

Mixed matrix membranes are prepared from zeolites and polymers, such as polyimides, in a void free fashion where either no voids or voids of less than several Angstroms are present at the interface of the polymer and the zeolite by bonding (hydrogen, ionic, or covalent) functional groups on the zeolite with functional groups on the polymer. The mixed matrix membranes may be cast or formed by ISAM processes, and may be present on a variety of supports including hollow fibers.

Assignees with Similar Patents

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Referenced by

UOP (13)
lg nanoh2o (9)
LG Chem, (4)
NanoH2O (2)
LG NANOH20, INC. (2)
Honeywell International (1)
Korea University Foundation (1)
bettergy (1)
nanoh20 (1)
General Motors (1)

Tech Analysis

Class Subclass Type Reference Factor Citation Factor Strength Grant time Early grant (%)
502 4 Emerging Average Seminal Medium Average 61.6
502 64 Emerging Average Average Medium Slow 79.3
502 77 Stable Average Average Medium Slow 82.4