Partially crosslinked silalactone polymers, their preparation an

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

1974-06-12

1976-04-06

Czaja, Donald E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

2604482B, 427 44, 427387, 428446, 428452, C08G 6368, C08G 6302

Patent

active

039488640

ABSTRACT:
Linear homopolymers of 3,5,5-trimethyl-1-oxa-5-sila-cyclohexan-2-one are crosslinked through the 5-methyl group, e.g. by heating with an organic peroxide, to give polymers. Films of these cross linked 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: 3169945 (1965-02-01), Hostettler et al.
patent: 3523920 (1970-08-01), Schultz
patent: 3523921 (1970-08-01), Schultz
patent: 3778458 (1973-12-01), Morehouse
Mironov et al., "Synthesis of Lactones and Lactams with Silicon Atom in the Ring," Chem. Abstracts 66, 760077p (1967).

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