Polymer membranes

Details Polymer membranes Polymer membranes

2008-04-15

2008-04-15

Mulcahy, Peter D. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S413000

Reexamination Certificate

active

07358288

ABSTRACT:
The invention relates to novel organic/inorganic hybrid membranes which have the following composition: a polymer acid containing —SO3H, —PO3H2, —COOH or B(OH)2groups, a polymeric ease (optional), which contains primary, secondary or tertiary amino groups, pyridine groups, imidazole, benzimidazole, triazole, benzotriazole, pyrazole or benzopyrazole groups, either in the side chain or in the main chain; an additional polymeric base (optional) containing the aforementioned basic groups; an element or metal oxide or hydroxide, which has been obtained by hydrolysis and/or sol-gel reaction of an elementalorganic and/or metalorganic compound during the membrane forming process and/or by a re-treatment of the membrane in aqueous acidic, alkaline or neutral electrolytes. The invention also relates to methods for producing said membranes and to various uses for membranes of this type.

REFERENCES:
patent: 4133941 (1979-01-01), Sheibley
patent: 6194474 (2001-02-01), Kerres et al.
patent: 6465136 (2002-10-01), Fenton et al.
patent: 6723757 (2004-04-01), Kerres et al.
patent: 6962959 (2005-11-01), Kurano et al.

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