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:
Oct. 29, 1991
Filed:
Nov. 28, 1989
Applicant:
Inventor:
Venkataraman Ramachandran, Baton Rouge, LA (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07C / ;
U.S. Cl.
CPC ...
549244 ; 560 52 ; 562460 ; 568332 ;
Abstract
Substituted benzophenones are disclosed having the following formula ##STR1## where R.sub.A and R.sub.B are --OH, C.sub.1 to C.sub.12 linear or branched alkoxy or taken together with the adjacent carbonyl carbons form an anhydride ring, R.sub.1 and R.sub.2 are the same or different and are hydrogen, C.sub.1 to C.sub.6 linear or branched alkyl, halo, aryl unsubstituted or substituted with one or more aryloxy groups or R.sub.1 and R.sub.2 taken together are (CH.sub.2).sub.x where x is an integer from 3 to 6 with the proviso that R.sub.1 and R.sub.2 cannot both be hydrogen. Processes to produce these benzophenones are also disclosed.