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. 21, 1992
Filed:
Oct. 29, 1990
Applicant:
Inventors:
Gianangelo Bargigia, Milan, IT;
Vito Tortelli, Milan, IT;
Claudio Tonelli, Concorezzo, IT;
Silvana Modena, Monza, IT;
Assignee:
Ausimont S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
570156 ; 570158 ;
Abstract
Perfluorobutadiene and higher alkandienes, with terminal double bonds, are obtained from .alpha.,.omega.-dibromo, .alpha., .omega.,bromo, iodo perfluoroalkanes by dehalofluorination carried out with the aid of an organometallic compounds, in the presence of aprotic solvent belonging to the class of hydrocarbons or polar aprotic solvent belonging to the class of ethers, with limited reaction times.