Viscoelastic gel detergent compositions
Patent 4836948 Issued on June 6, 1989. Estimated Expiration Date: 
December 30, 2007. 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.
December 30, 2007. 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 2798053 3060124 3558496 3579455 3609102 3720621 3896056 3898186 Thickened bleach compositions for treating hard-to-remove soils Stable viscous hydrogen peroxide solutions containing a surfactant and a method of preparing the same InventorAssigneeApplicationNo. 07/139490 filed on 12/30/1987US Classes:510/370, Liquid, paste, foam, or gel (e.g., slurry, aerosol composition or package, etc.)510/223, Polycarboxylic acid component, or salt thereof510/403, Gel or malleable composition (e.g., plastic-like, etc.)510/476, Carboxylic acid anhydride, free carboxyl group, or salt thereof in the polymer510/508Heavy metal or aluminum containing inorganic componentExaminersPrimary: Albrecht, Dennis L.Attorney, Agent or FirmInternational ClassesA61K 8/72 (20060101)A61K 8/60 (20060101) A61K 8/81 (20060101) C11D 1/66 (20060101) C11D 3/37 (20060101) C11D 3/12 (20060101) C11D 17/00 (20060101) A61K 8/26 (20060101) A61K 8/30 (20060101) A61K 8/19 (20060101) A61K 8/11 (20060101) A61Q 11/02 (20060101) A61Q 11/00 (20060101) AbstractA cleaning composition is provided in gel form having a viscosity on a Haake Rotovisco RV-100 Viscometer at 25° C. under 5 sec-1 shear of from about 1,000 to 20,000 cps and under 21 sec-1 shear of from about 200 to 5,000 cps, a pH range from 11 to 13, and a steady state viscoelastic deformation compliance Je ° greater than 0.01. In one embodiment, the composition comprises a polycarboxylate polymeric thickener, especially a cross-linked polyacrylic acid. There preferably is also present a trivalent metal containing material, especially an aluminum containing material such as alumina. A structuring chelant is a further preferred component which is selected from the salts of carbonate, pyrophosphate and mixtures thereof. When mixed with the polycarboxylate polymer and trivalent metal material, the structuring chelant can form a clear gel.Other References
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