Aramid compositions of improved solubility and flame retardancy
US5420225A · kind A · utility
1Cited by
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3Claims
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Assignee
Inventors
Key dates
| Filing date | Jul 26, 1991 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Jul 26, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/42
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aramid polymers, e.g., those derived from p-phenylene diamine and terephthaloyl chloride, can have their solubility properties and flame retardancy enhanced by the incorporation therein of a moiety derived from a bis(aminophenoxyphenyl) phosphine oxide, e.g., bis(3-aminophenoxy-4'-phenyl) phenylphosphine oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.