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:
Dec. 07, 1976
Filed:
Sep. 22, 1972
George B Fozzard, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
Tetrafluorocyclobutane is cracked to produce vinylidene fluoride and unavoidably minor amounts of tetrafluoroethylene and ethylene. The reaction effluent to which additional ethylene can be added is subjected to dimerization and/or codimerization conditions under which tetrafluoroethylene is converted to a product or products which can be removed from the desired vinylidene fluoride by conventional fractionation without danger of explosion. Separated tetrafluorocyclobutane can be recycled to the cracking operation. Octafluorocyclobutane can be cracked under optimum conditions in separate zone, usually more severe than those employed for tetrafluorocyclobutane.