ARYL MONOSULFONATE COLLECTORS USEFUL IN THE FLOTATION OF MINERALS - Patent 0562040

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EP 0 562 040 A1

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(43)	Date of publication:
	29.09.1993 Bulletin 1993/39

(21)	Application number: 92904085.0

(22)	Date of filing: 13.12.1991

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International Patent Classification (IPC):

B03D 1/ 004^{( . )}

B03D 1/ 012^{( . )}

(86)	International application number:
	PCT/US1991/009371

(87)	International publication number:
	WO 1992/011091 (09.07.1992 Gazette 1992/17)

(84)	Designated Contracting States:
	SE

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Priority:

17.12.1990 US 19900628264

(71)	Applicant: THE DOW CHEMICAL COMPANY
	Midland, Michigan 48640 (US)

(72)	Inventors:
	KLIMPEL, Richard, R. Midland, MI 48640 (US) LEONARD, Donald, E. Shepherd, MI 48883 (US) FRAZIER, Kevin, A. Midland, MI 48642 (US) MCCANN, Gordon, D. Midland, MI 48642 (US)

(74)	Representative: Burford, Anthony Frederick, et al
	W.H. Beck, Greener & Co. 7 Stone Buildings Lincoln's Inn London WC2A 3SZ London WC2A 3SZ (GB)

(54)	ARYL MONOSULFONATE COLLECTORS USEFUL IN THE FLOTATION OF MINERALS