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:
Mar. 09, 1976
Filed:
Sep. 27, 1973
Applicant:
Inventors:
Pierre-Etienne Bost, Lyon, FR;
Michel Costantini, Lyon, FR;
Michel Jouffret, Francheville le bas, FR;
Guy Lartigau, Lyon, FR;
Assignee:
Rhone-Poulenc Textile, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
2606 / ; 2606 / ; 260625 ;
Abstract
Phenols and phenol ethers are hydroxylated with hydrogen peroxide in the presence of sulphur, selenium, tellurium, phosphorus, arsenic or antimony. High yields of dihydric materials are obtained by this process which avoids the need to use peracids or very strong acids.