PROCESS FOR PRODUCING BENTONITE CLAYS EXHIBITING ENHANCED SOLUTION VISCOSITY PROPERTIES

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EP 0 549 693 A1

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(43)	Date of publication:
	07.07.1993 Bulletin 1993/27

(21)	Application number: 91917187.0

(22)	Date of filing: 09.09.1991

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International Patent Classification (IPC):

A61K 8/ 19^{( . )}
A61K 8/ 24^{( . )}
A61K 8/ 26^{( . )}
B21B 1/ 00^{( . )}
C01B 33/ 26^{( . )}
C01B 39/ 06^{( . )}
C09K 3/ 00^{( . )}

A61K 8/ 23^{( . )}
A61K 8/ 25^{( . )}
A61Q 19/ 00^{( . )}
B28C 1/ 00^{( . )}
C01B 33/ 40^{( . )}
C04B 14/ 10^{( . )}
C09K 8/ 14^{( . )}

(86)	International application number:
	PCT/US1991/006468

(87)	International publication number:
	WO 1992/005123 (02.04.1992 Gazette 1992/08)

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

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Priority:

17.09.1990 US 19900583288

(71)	Applicant: SOUTHERN CLAY PRODUCTS, INC.
	Gonzales, TX 78629 (US)

(72)	Inventors:
	LEWIS, Patricia, M. Gonzales, TX 78629 (US) HANLON, David, J. Gonzales, TX 78629 (US) MENKING, William, R. Gonzales, TX 78629 (US)

(74)	Representative: Green, Mark Charles, et al
	Urquhart-Dykes & Lord, 91 Wimpole Street London W1M 8AH London W1M 8AH (GB)

(54)	PROCESS FOR PRODUCING BENTONITE CLAYS EXHIBITING ENHANCED SOLUTION VISCOSITY PROPERTIES