Preparation of colorless N-(dichlorophosphoryl)trichlorophosphazene
US4780292A · kind A · utility
1Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1987 |
| Grant date | Oct 25, 1988 |
| Priority date | — |
| Expiry date | Nov 12, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B21/097
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Colorless, or but very faintly tinted N-(dichlorophosphoryl)trichlorophosphazene [P.sub.2 NOCl.sub.5 ] is prepared by reacting phosphorus pentachloride with ammonium chloride in the presence of POCl.sub.3, and then treating the resulting medium of reaction, containing P.sub.3 NCl.sub.12, with SO.sub.2, and wherein the temperature of the medium of reaction is maintained at a value of at most about 30.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.