Oxygen plasma resistant polymeric film and fiber forming macromolecules containing the phosphine oxide moiety
US5407528A · kind A · utility
12Cited by
1References
10Claims
0Family size
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Key dates
| Filing date | Jul 28, 1992 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Jul 28, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/23
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Poly(arylene ether phosphine oxide)s provide hydrolytic, thermal and oxidative stability. These materials have T.sub.g s ranging from about 190.degree.-280.degree. C., and are more self-extinguishing than other engineering thermoplastics tested when burned due to the presence of phosphorus in a substantial amount of char. Moreover, phosphorus presence played a major role in resisting aggressive oxygen plasma environments by forming a highly oxidized, non-volatile phosphorus containing surface layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.