AQUEOUS SOLUTIONS OF HYDROLYZED MALEIC ANHYDRIDE COPOLYMERS - Patent 0531313

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EP 0 531 313 A1

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(43)	Date of publication:
	17.03.1993 Bulletin 1993/11

(21)	Application number: 91908892.0

(22)	Date of filing: 25.04.1991

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International Patent Classification (IPC):

C08F 8/ 12^{( . )}

(86)	International application number:
	PCT/US1991/002751

(87)	International publication number:
	WO 1991/018932 (12.12.1991 Gazette 1991/28)

(84)	Designated Contracting States:
	BE DE ES FR

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Priority:

25.05.1990 US 19900529076

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

(72)	Inventors:
	PUGH, Luann, Marshall Wilmington, DE 19808 (US) TONG, Walter, Ray New Castle, DE 19720 (US)

(74)	Representative: Abitz, Walter, Dr.-Ing.
	Patentanwälte Abitz & Partner Postfach 86 01 09 D-81628 München D-81628 München (DE)

(54)	AQUEOUS SOLUTIONS OF HYDROLYZED MALEIC ANHYDRIDE COPOLYMERS