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. 06, 1976
Filed:
Mar. 04, 1974
Harold E Doorenbos, Midland, MI (US);
Hughie R Frick, Bay County, MI (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
Two new organic compounds are disclosed, perfluorocyclohexane-1,4-dione and perfluorocyclohexene-1,4-dione, which are obtained concurrently or alternatively by reacting fluoranil with substantially pure anhydrous cobalt trifluoride. These compounds are clear, colorless liquids which are useful as monomers in the synthesis of thermally stable elastomeric polymers. Also disclosed is the dihydrate of said perfluorocyclohexane-1,4-dione, namely, octafluoro-1,1,4,4-cyclohexanetetraol. Another aspect of this invention is a series of polyethers formed by reacting said perfluorocyclohexane-1,4-dione with cesium fluoride and a cyclic or noncyclic aliphatic perhaloalkene having from 2 to 12 carbon atoms and a fluorine atom on at least each of the carbon atoms connected by the double bond, said polymer having as a repeating unit ##SPC1## Wherein