Phosphorus-containing nitrogen compounds as flame retardants and synthetic resins containing them
US4742088A · kind A · utility
19Cited by
1References
19Claims
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Assignee
Inventor
Key dates
| Filing date | Jun 18, 1987 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Jun 18, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/5313
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Nitrogen-containing 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide derivatives are prepared by condensation of the oxide with amines and aldehydes or ketones. They may be used as additive flame retardants or incorporated into synthetic resins such as polyesters and polyurethane foams, by copolymerization to form flame-retardant resins. They may also be used as antioxidants, germicides or herbicides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.