EP 0549693 A4 19931013 - PROCESS FOR PRODUCING BENTONITE CLAYS EXHIBITING ENHANCED SOLUTION VISCOSITY PROPERTIES
Title (en)
PROCESS FOR PRODUCING BENTONITE CLAYS EXHIBITING ENHANCED SOLUTION VISCOSITY PROPERTIES
Publication
Application
Priority
US 58328890 A 19900917
Abstract (en)
[origin: WO9205123A1] A process for upgrading a crude bentonite ore such that it can be used advantageously to prepare unusually high aqueous solution viscosities. This sequence comprises initially subjecting the crude ore to a working or shearing stage, followed by a drying step to about a 5 % moisture level. Na2CO3 is then dry-blended with the material, and the sequence is completed by subjecting the mix to a pulverizing step.
IPC 1-7
IPC 8 full level
A61K 8/19 (2006.01); A61K 8/23 (2006.01); A61K 8/24 (2006.01); A61K 8/25 (2006.01); A61K 8/26 (2006.01); A61Q 19/00 (2006.01); B21B 1/00 (2006.01); B28C 1/00 (2006.01); C01B 33/26 (2006.01); C01B 33/40 (2006.01); C01B 39/06 (2006.01); C04B 14/10 (2006.01); C09K 3/00 (2006.01); C09K 8/14 (2006.01)
CPC (source: EP KR)
A61K 8/26 (2013.01 - EP); A61Q 19/00 (2013.01 - EP); B28C 1/00 (2013.01 - EP); C01B 33/26 (2013.01 - KR); C04B 14/104 (2013.01 - EP); C09K 8/145 (2013.01 - EP)
Citation (search report)
- [AD] US 4242140 A 19801230 - ALTHER GEORGE R [US]
- [A] US 3509066 A 19700428 - JACOBS DANIEL A, et al
- [AD] US 3574345 A 19710413 - BROCINER RONALD ERIC
- See references of WO 9205123A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI NL SE
DOCDB simple family (publication)
WO 9205123 A1 19920402; BR 9106852 A 19930706; CA 2091780 A1 19920318; EP 0549693 A1 19930707; EP 0549693 A4 19931013; JP H06501444 A 19940217; KR 930702227 A 19930908; MX 9101076 A 19920504; ZA 917398 B 19920527
DOCDB simple family (application)
US 9106468 W 19910909; BR 9106852 A 19910909; CA 2091780 A 19910909; EP 91917187 A 19910909; JP 51568291 A 19910909; KR 930700782 A 19930316; MX 9101076 A 19910913; ZA 917398 A 19910917