The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 01, 2003
Filed:
Feb. 22, 2002
Applicant:
Inventor:
Justin Mark Cowan, Worcester, GB;
Assignee:
Rhodia Consumer Specialties Limited, Oldbury, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07F 9/142 ;
U.S. Cl.
CPC ...
C07F 9/142 ;
Abstract
A method for the production of an aromatic phosphite by reacting an aromatic hydroxy-compound with a phosphorus trihalide in the presence of a tertiary amine and a non-protic solvent, said solvent being mobile below −20° C. Suitable tertiary amines include tri-propyl amines, tri-butyl amines, tri-n-propylamine, tri-iso-propylamine, tri-n-butylamine, tri-iso-butylamine and tri-t-butylamine.