Patent · US Expired

Process for the manufacture of aliphatic phosphonic acids

US4064163A · kind A · utility

26Cited by
3References
35Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 30, 1976
Grant dateDec 20, 1977
Priority date—
Expiry dateDec 30, 1996

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07F9/38
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

An improved process for the manufacture of an aliphatic phosphonic acid, particularly 2-chloroethylphosphonic acid, of the type wherein a diester of the aliphatic phosphonic acid, particularly bis-(2-chloroethyl)-2-chloroethylphosphonate, is reacted with anhydrous hydrogen halide, particularly hydrogen chloride, to produce a reaction product containing the aliphatic phosphonic acid, and the corresponding aliphatic halides particularly ethylene dichloride.

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