POLYELECTROLYTES MODIFIED BY REACTION WITH ANHYDRIDE GROUP CONTAINING COPOLYMERS AND THEIR USE AS FLOCCULENTS - Patent 0400129

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EP 0 400 129 A1

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(43)	Date of publication:
	05.12.1990 Bulletin 1990/49

(21)	Application number: 90900031.0

(22)	Date of filing: 04.12.1989

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International Patent Classification (IPC):

B01D 21/ 01^{( . )}
C02F 1/ 56^{( . )}

C02F 1/ 54^{( . )}
C08G 81/ 02^{( . )}

(86)	International application number:
	PCT/AU1989/000523

(87)	International publication number:
	WO 1990/006336 (14.06.1990 Gazette 1990/14)

(84)	Designated Contracting States:
	AT BE CH DE ES FR GB IT LI LU NL SE

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Priority:

05.12.1988 AU 19880001806
05.12.1988 AU 19880001807

(71)	Applicant: WATSON, Mark, Raey
	Seven Hills, NSW 2147 (AU)

(72)	Inventor:
	WATSON, Mark, Raey Seven Hills, NSW 2147 (AU)

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

(54)	POLYELECTROLYTES MODIFIED BY REACTION WITH ANHYDRIDE GROUP CONTAINING COPOLYMERS AND THEIR USE AS FLOCCULENTS