Process for activating layered silicates
Patent 5869415 Issued on February 9, 1999. Estimated Expiration Date: 
June 12, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 12, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1492184 1980569 2563977 2574895 3029783 3673228 Solid bleaching composition for edible oils Failure sensing hydraulic accumulator and system Catalyst for reducing the nitrogen oxide content of flue gases Treating compositions for used frying oils Inventors
AssigneeApplicationNo. 661972 filed on 06/12/1996US Classes:502/81, Acid treating502/80, Clay502/83Sulfuric or hydrochloric acidExaminersPrimary: Lewis, MichaelAssistant: Dunn, Thomas G. Jr. Attorney, Agent or FirmForeign Patent References
International ClassB01J 021/16Foreign Application Priority Data1995-06-12 DEAbstractA 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° C. and the activated layered silicate is calcined at temperatures of about 200° to 400° C. and comminuted desired. |
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