Process for the production of crystalline sodium sheet silicate with kanemite structure
Patent 5456895 Issued on October 10, 1995. Estimated Expiration Date: 
May 18, 2014. 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.
May 18, 2014. 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 ReferencesProcess for the preparation of crystalline sheet-type alkali metal silicates Crystalline silicic acid, its salts, and processes for their preparation Process for the preparation of crystalline sheet-type alkali metal silicates Process for the preparation of crystalline sheet sodium silicates Process for the preparation of crystalline sodium silicates having a sheet structure Patent #: 5211930 InventorsApplicationNo. 245371 filed on 05/18/1994US Classes:423/332, Alkali metal containing (Li, Na, K, Rb, or Cs)423/333By precipitating or gelling from silicate solutionExaminersPrimary: Langel, Wayne A.Attorney, Agent or FirmForeign Patent References
International ClassC01B 033/32Foreign Application Priority Data1993-06-02 DEAbstractThe present invention relates to a process for the production of crystalline sodium sheet silicate with kanemite structure with the chemical formulaNaH Si2 O5 ⋅X H2 Oin which X represents a value between 1 and 3. Crystalline sodium sheet silicate with kanemite structure is produced by maintaining a mixture of sodium disilicate, silica and water in the molar ratio of 1:2:(6-8) at a temperature of 20° to 100° C. for a period of 0.2 to 10 h. |
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