Flameproofing of plastics
US4061604A · kind A · utility
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10References
11Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 15, 1975 |
| Grant date | Dec 6, 1977 |
| Priority date | — |
| Expiry date | Dec 15, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/5373
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
3-Hydroxy-5-phosphono-1,2-oxaphospholanes can be synthesized from .beta.-dicarbonyl compounds by reaction with 2 moles of an diorganophosphite. The products are usable as flameproofing agents for plastics, particularly for polyurethanes and epoxide resins which are able to react with the hydroxyl group of the oxaphospholanes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.