Patent · US Expired

Method for producing phosphonium phenolates

US6710153B2 · kind B2 · utility

0Cited by

2References

12Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Lothar Bunzel · Kempen, DE
Uwe Hucks · Alpen, DE
Annett Konig · Krefeld, DE
Silke Kratschmer · Krefeld, DE

Key dates

Filing date	Jun 17, 2002
Grant date	Mar 23, 2004
Priority date	—
Expiry date	Jun 17, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F9/54
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the production of phosphonium phenolates is disclosed. The process entails reacting a phosphonium halide and phenol in an aqueous alkaline solution. The phosphonium phenolate produced is separated from the synthesis mixture by crystallization

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