Patent · US Expired

Production of quaternary phosphonium hydroxides

US4189449A · kind A · utility

1Cited by

3References

6Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Klaus Hestermann · Lechenich, DE
Hartfried Vollmer · Lechenich, DE

Key dates

Filing date	Jul 14, 1978
Grant date	Feb 19, 1980
Priority date	—
Expiry date	Jul 14, 1998

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F9/5407
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Quaternary phosphonium hydroxides of the general formula: ##STR1## in which R stands either for hydrogen or an aliphatic or aromatic hydrocarbon having 1 to 12 carbon atoms and n stands for 1 or 2, are made by reacting a di- or trimethylphosphine in an aqueous medium with an epoxide of the general formula ##STR2## in which R has the meaning given above. More specifically a pH-value of .gtoreq.12 is established in the aqueous medium by means of a base and the starting materials are mixed in said medium.

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