Carbonate built laundry detergent composition
December 21, 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 References 3308067 Process for preparing a silicate-pyrophosphate detergent composition Photoactivated bleach-compositions and processes Fabric softening compositions Free-flowing detergent powders Highly alkaline cleaning dispersion Detergent compositions Detergent powder and process for its preparation Process for the preparation of a granular detergent composition Process for preparing a phosphate-reduced granular detergent InventorsAssigneeApplicationNo. 360312 filed on 12/21/1994US Classes:510/351, Sulfur containing anionically substituted surfactant which is admixed with a diverse non-soap surfactant510/359, With inorganic phosphorus containing component510/361, Polycarboxylic acid component, or acid anhydride or salt thereof (e.g., sodium citrate, maleic anhydride polymer, polyacrylic acid, etc.)510/469, Carbon bonded directly to the phosphorus (e.g., phosphonic acid or salt or ester thereof, etc.)510/476Carboxylic acid anhydride, free carboxyl group, or salt thereof in the polymerExaminersPrimary: Lieberman, PaulAssistant: Fries, Kery Attorney, Agent or FirmInternational ClassesC11D 003/10C11D 001/14 AbstractA powdered laundry detergent composition comprising an active surfactant, at least about 70 wt. % of a water soluble alkaline carbonate salt, e.g., sodium carbonate, about 0.1 to 2 wt. % of a phosphorus-containing sequestering agent, e.g., sodium tripolyphosphate (STPP), about 0.1 to 2 wt. % of a polymeric polycarboxylate, e.g., a polyacrylate or a polymaleate, and about 1-12 wt. % water. Use of the foregoing detergent composition provides excellent cleaning and whitening of fabrics while avoiding the problem of eutrophication which occurs when a substantial amount of a phosphorus containing builder such as STPP is present in the composition, and while minimizing the problem of fabric encrustation often present when the composition contains a large amount of carbonate builder. | |
