Preparation of N-(dichlorophosphoryl)trichlorophosphazene
US4812297A · kind A · utility
1Cited by
5References
6Claims
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Key dates
| Filing date | Mar 10, 1988 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Mar 10, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B21/097
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
N-(Dichlorophosphoryl)trichlorophosphazene [P.sub.2 NOCl.sub.2 ], essentially devoid of oligomeric impurities, is improvedly and reproducibly prepared by reacting phosphorus pentachloride with ammonium chloride, advantageously stoichiometrically, wherein more than 50% by weight of the ammonium chloride is of a particle size less than 0.16 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.