Process for producing granular detergent composition
Patent 4478735 Issued on October 23, 1984. Estimated Expiration Date: 
May 11, 2002. 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 11, 2002. 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 3629951 Method for retarding gelation of crutcher slurries containing bicarbonate, carbonate and silicate Patent #: 4362640 InventorsAssigneeApplicationNo. 06/376963 filed on 05/11/1982US Classes:510/452, Spray-dried product, or process of preparing159/16.1, GASEOUS BLAST OR CURRENT159/3, SPRAY TYPE34/168With gas or vapor flow for contact with treated materialExaminersPrimary: Kittle, John E.Assistant: Shah, Mukund J. Attorney, Agent or FirmInternational ClassesC11D 11/02 (20060101)C11D 3/12 (20060101) Foreign Application Priority Data1981-05-20 JPAbstractA process for producing a granular detergent composition containing a surface active agent, a zeolite, an alkali metal silicate, and other detergent builder is described. This granular detergent composition is produced by either (1)(a) preparing an aqueous slurry containing, as a dispersing medium, the surface active agent;(b) bubbling a gas into the aqueous slurry to form a slurry containing bubbles having an average bubble diameter of 40 through 100 microns and having a specific gravity of 0.7 through 0.9;(c) mixing the resultant aqueous slurry with the zeolite, the alkali metal silicate, and the other builders to form a detergent slurry; and(d) spray drying the detergent slurry to form the granular detergent composition or (2)(a) preparing a detergent slurry containing the surface active agent, the zeolite, the alkali metal silicate, and/or other detergent builders;(b) passing the detergent slurry through a centrifugal pump, while a gas is bubbled into the detergent slurry, whereby the detergent slurry containing bubbles having an average diameter of 40 through 100 microns and having a specific gravity of 0.7 through 0.9 is formed; and(c) spray drying the detergent slurry to form the granular detergent composition. | |
