SEPARATION OF TETRAFLUOROETHANE ISOMERS - Patent 0649398

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EP 0 649 398 A1

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(43)	Date of publication:
	26.04.1995 Bulletin 1995/17

(21)	Application number: 92916561.0

(22)	Date of filing: 17.07.1992

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International Patent Classification (IPC):

B01J 20/ 18^{( . )}
C07C 17/ 389^{( . )}

C07C 17/ 23^{( . )}
C07C 19/ 08^{( . )}

(86)	International application number:
	PCT/US1992/005851

(87)	International publication number:
	WO 1994/002440 (03.02.1994 Gazette 1994/04)

(84)	Designated Contracting States:
	DE ES FR GB IT NL

(71)	Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
	Wilmington Delaware 19898 (US)

(72)	Inventors:
	CORBIN, David, R. West Chester, PA 19382 (US) MAHLER, Barry, Asher Glen Mills, PA 19342 (US)

(74)	Representative: Jones, Alan John, et al
	CARPMAELS & RANSFORD 43 Bloomsbury Square London, WC1A 2RA London, WC1A 2RA (GB)

(54)	SEPARATION OF TETRAFLUOROETHANE ISOMERS