Membranes based on silicic acid heteropolycondensates and a proc

Stock material or miscellaneous articles – Composite – Of silicon containing

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2105002, 4272481, 427255, 4272552, 4272553, 427302, 427322, 427326, 427387, 427266, 528 10, 528 31, 528 32, 528 38, 528 39, B32B 904

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045059853

ABSTRACT:
Membranes based on silicic acid heteropolycondensates are produced by hydrolytic polycondensation of at least one silicic acid derivative in the presence of water and, if appropriate, a condensation catalyst, the polycondensation being carried out at the surface of a support, which supports the resulting membrane. The reactants can be fed to the surface of the support via the gas phase or via one or more liquid phases.

REFERENCES:
patent: 2474704 (1949-06-01), Thayer
patent: 4238590 (1980-12-01), Scholze et al.
patent: 4243692 (1981-01-01), Scholze et al.
patent: 4374696 (1983-02-01), Schmidt et al.
patent: 4374933 (1983-02-01), Scholze et al.
patent: 4393113 (1983-07-01), Sugie et al.

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