4-(ALPHA BRANCHED)ACYL- (3H)-PYRAZOL-3-ONES FOR USE IN THE EXTRACTION OF METALS, ESPECIALLY COPPER, FROM SOLUTION - Patent 1456424

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EP 1 456 424 A1

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(43)	Date of publication:
	15.09.2004 Bulletin 2004/38

(21)	Application number: 02783267.4

(22)	Date of filing: 05.12.2002

(51)	International Patent Classification (IPC)⁷: C22B 3/00, C07D 231/26

(86)	International application number:
	PCT/GB2002/005481

(87)	International publication number:
	WO 2003/054237 (03.07.2003 Gazette 2003/27)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR
	Designated Extension States:
	AL LT LV MK RO

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Priority:

20.12.2001 GB 0130448

(71)	Applicant: CYTEC TECHNOLOGY CORP.
	Wilmington, Delaware 19801 (US)

(72)	Inventors:
	CAMPBELL, John Manchester M9 8ZS (GB) SWART, Ronald Matthys Manchester M9 8ZS (GB)

(74)	Representative: Bowman, Paul Alan
	Lloyd WiseCommonwealth House,1-19 New Oxford Street London WC1A 1LW London WC1A 1LW (GB)

(54)	4-(ALPHA BRANCHED)ACYL- (3H)-PYRAZOL-3-ONES FOR USE IN THE EXTRACTION OF METALS, ESPECIALLY COPPER, FROM SOLUTION