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:
May. 12, 1981
Filed:
Oct. 15, 1979
Applicant:
Inventors:
Assignee:
Central Glass Company, Limited, Ube, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
560111 ; 560223 ; 560237 ; 560 64 ; 560 66 ; 560185 ; 560197 ; 560262 ; 560266 ; 2604 / ; 2604 / ;
Abstract
Derivatives of hexafluoropropene dimer expressed by the following general formula ##STR1## in which R.sub.f represents (CF.sub.3).sub.2 C.dbd.C(CF.sub.2 CF.sub.3) or (CF.sub.3).sub.2 CH--CF(CF.sub.2 CF.sub.3) and R represents a hydrocarbon residue of a carboxylic acid having one free site capable of reacting with the dimer. A process for preparing the derivatives is also disclosed in which the dimer is contacted with the carboxylic acid in an inert solvent in the presence of a catalyst. Metal, amine or ammonium salts of the acid may be also used for the reaction, in which case the reaction is feasible in the absence of a catalyst.