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:
Jun. 16, 1998
Filed:
Dec. 08, 1994
Applicant:
Inventors:
Hans Millauer, Eschborn, DE;
Adolf Schmidt, Hofheim, DE;
Assignee:
Hoechst AG, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C25B / ;
U.S. Cl.
CPC ...
585425 ; 205415 ; 205419 ; 205462 ; 205463 ;
Abstract
2,7'-Dimethyl-1,1'-binaphthyl and a process for preparing 2,2'-dimethyl-1,1'-binaphthyl and 2,7'-dimethyl-1,1'-binaphthyl by electrochemically oxidatively dimerizing 2-methylnaphthalene in the presence of acetonitrile/water/electrolyte salt mixtures which additionally contain at least one further component which, is immiscible or only partially miscible with water, and rectifying the reaction mixture obtained under reduced pressure.