The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 1999
Filed:
Jun. 12, 1996
Applicant:
Inventors:
Jose Antonio Ortiz, Puebla, MX;
Carlos Martinez Reyes, Puebla, MX;
Walter Reinking Cejudo, Puebla, MX;
Werner Zschau, Steinebach, DE;
Christain Fabry, Munich, DE;
Hermann Ebert, Landshut, DE;
Assignee:
Sud-Chemie AG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
502 81 ; 502 80 ; 502 83 ;
Abstract
A process is described for activation of layered silicates having an ion exchange capacity (IEC) of at least 25 meq/g by treating them with an acid, characterized in that the layered silicate is activated with about 1 to 10% by weight (based on the dry layered silicate) of an acid at a temperature of not more than 80.degree. C. and the activated layered silicate is calcined at temperatures of about 200.degree. to 400.degree. C. and comminuted desired.