Patent · US Expired

Preparation of polychlorophosphazene

US4810480A · kind A · utility

2Cited by
5References
9Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 10, 1988
Grant dateMar 7, 1989
Priority date—
Expiry dateMar 10, 2008

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC01B21/0986
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

Polychlorophosphazene [Cl.sub.2 (O)P[NPCl.sub.2 ].sub.n Cl] is more rapidly produced by polycondensing N-(dichlorophosphoryl)-trichlorophosphazene [P.sub.2 NOCl.sub.5 ] in the presence of a catalytically effective amount of a tertiary amine.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.