Partially crosslinked silalactone polymers, their preparation an

Details Partially crosslinked silalactone polymers, their preparation an Partially crosslinked silalactone polymers, their preparation an

1975-07-29

1977-07-05

Wyse, Thomas G.

Gas separation

Means within gas stream for conducting concentrate to collector

55 68, B01D 5914

Patent

active

040337316

ABSTRACT:
Linear homopolymers of 3,5,5-trimethyl-5-sila-.delta.-valerolactone are crosslinked through the 5-methyl group, e.g. by heating with an organic peroxide, to give polymers. Films of these crosslinked polymers have a critical surface tension similar to Teflon and can be used for water proofing. The films also exhibit selective permeability to gases and can be used to reduce the CO.sub.2 content of CO.sub.2 /O.sub.2 mixtures.

REFERENCES:
patent: 2966235 (1960-12-01), Kammermeyer
patent: 3510387 (1970-05-01), Robb
patent: 3611676 (1971-10-01), Christen et al.
patent: 3657113 (1972-04-01), Stancell et al.
patent: 3754375 (1973-08-01), Bouchilloux et al.

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