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. 07, 1993
Filed:
Jun. 19, 1992
Applicant:
Inventors:
Jaume Castella Sola, Barcelona, ES;
Jaime Palencia Adrubau, Barcelona, ES;
Assignee:
Elf Atochem S.A., Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
570204 ; 570205 ;
Abstract
1,1-Bis(R-phenyl)-2,2,2-trichloroethanes are dehydrochlorinated in high yields, e.g., into 1,1-bis(chlorophenyl)-2,2-dichloroethylenes, by reacting same with an aqueous solution of an alkali metal hydroxide, in liquid state in the presence of a phase transfer agent, e.g., a quaternary ammonium compound, but in the absence of any reaction solvent.
Castella Sola, Jaume. (1993). Dehydrochlorination of 1,1-bis(r-phenyl)-2,2,2-trichloroethanes (U.S. Patent No. 5243110). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5243110
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile