Layered silicates of limited swelling power, a process for their production and their use in detergents and cleaning preparations
July 8, 2006. 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 3666407 3671190 3855147 Synthesis of hydrous magnesium silicates Magnesium aluminosilicate and process for the manufacture thereof Synthesized gellants containing smectite-type clay and process for producing same Production of magnesium silicates Process for synthesizing compositions containing smectite-type clays and gellants produced thereby Method of washing textiles and composition containing inorganic silicates and polycarboxylates and/or polyphosphonates Stable aqueous suspension of water-insoluble, calcium-binding aluminosilicates and nonionic suspending agents InventorsAssigneeApplicationNo. 06/883256 filed on 07/08/1986US Classes:510/315, With aluminosilicate component (e.g., synthetic zeolite, etc.)423/328.2, Crystalline423/331, Alkaline earth metal containing (Mg, Ca, Sr, or Ba)510/276, For textile material (e.g., laundry detergent, etc.)510/307, With oxygen, nitrogen, or sulfur containing optical brightener510/356, Oxygen containing surfactant devoid of covalently bonded anionic substituents (e.g., polyethoxylated alcohol, amine oxide, etc.)510/357, Sulfur-containing, anionically substituted surfactant510/507Clay or inorganic aluminosilicate salt component (e.g., bentonite, zeolite, etc.)ExaminersPrimary: Albrecht, Dennis L.Attorney, Agent or FirmInternational ClassesC01B 33/00 (20060101)C01B 33/40 (20060101) C11D 3/12 (20060101) Foreign Application Priority Data1985-07-24 DEAbstractThe present invention provides synthetic, finely divided water-insoluble layered silicates having a smectite-like crystal phase, with increased contents of bound alkali and silicate and a distinctly reduced swelling power in aqueous suspension relative to pure layered silicates of this type. The synthetic layered silicate of this invention has the following oxide summation formulawherein M is selected from the group consisting of sodium and a mixture of sodium and lithium said mixture having a molar ratio of sodium to lithium of at least about 2,n represents the number of water molecules bound in the crystal phase, anda, b, c and n each represent a number having a value within the following ranges:a is from about 0.05 to about 0.4b is from 0 to about 0.3c is from about 1.2 to about 2.0, andn is from about 0.3 to about 3.0.Other References
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