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:
Jan. 15, 1991
Filed:
Jun. 06, 1989
Applicant:
Inventors:
Harold E Bellis, Wilmington, DE (US);
Donald J Dumas, Wilmington, DE (US);
George C Sonnichsen, Wilmington, DE (US);
Vinayakam Subramanyam, Boothwyn, PA (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11C / ; C07C / ;
U.S. Cl.
CPC ...
260404 ; 260405 ; 560 17 ; 560 32 ; 560 43 ; 560108 ; 560109 ; 560115 ; 560125 ; 560142 ; 560145 ;
Abstract
Phenyl esters of substituted acids are prepared by a two-step process in which a phenol derivative is first treated with an acid halide to yield a phenyl ester intermediate, and the intermediate is reacted with an appropriate nucleophile.