Partially crosslinked silalactone polymers, their preparation and their use
US3948864A · kind A · utility
2Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1974 |
| Grant date | Apr 6, 1976 |
| Priority date | — |
| Expiry date | Jun 12, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/6952
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.