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:
Sep. 22, 1998
Filed:
Nov. 12, 1996
Applicant:
Inventors:
John David Carter, Cincinnati, OH (US);
Jack Lee Parsons, East Aurora, NY (US);
David Fred Starks, Williamsville, NY (US);
Assignee:
The Procter & Gamble Company, Cincinnati, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568592 ; 549416 ; 549475 ;
Abstract
The present invention is for a process for preparing monoacetals of hydroquinone wherein said process provides for higher yields of greater purity. Said process utilizes a two step reaction wherein a protected hydroquinone is reacted with an enol ether to form a protected intermediate. Upon hydrogenolysis of said intermediate a final product, monoacetal hydroquinone, is formed having higher degree of purity and in greater yields that the yields attributed to reactions known in the art.