Composition and method for developing extensional viscosity in cleaning compositions
October 17, 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 3296145 3560389 3684722 Alkali metal hypochlorite bleaching and cleaning compositions thickened with branch chain amine oxides Aqueous hypochlorite solutions Liquid, thickened chlorine bleaching composition Thickened alkali metal hypochlorite compositions Bleach composition Cleaning compositions Bleaching compositions InventorsAssigneeApplicationNo. 324316 filed on 10/17/1994US Classes:510/373, Colorant, amine or phosphine oxide, or nonanionic sulfoxy containing organic component134/34, With treating fluid motion252/187.27, Alkaline earth metal hypochlorite510/100, WITH SAFETY OR INDICATOR FEATURE510/195, For household drain or sewer pipe510/406, Packaged or gas-propelled composition510/433, Nitrogen in organic surfactant devoid of covalently bonded anionic substituents510/503Amine oxideExaminersPrimary: Albrecht, Dennis L.Attorney, Agent or FirmForeign Patent References
International ClassesC11D 001/75C11D 003/395 C11D 017/04 C11D 017/08 DIG. 14 AbstractThe present invention is a thickened viscoelastic cleaning composition comprising, in aqueous solution:(a) 0.1 to 5 weight percent of an active cleaning compound; and(b) 0.5 to 20 weight percent a viscoelastic thickening system comprising a hexadecyl dialkyl amine oxide and an organic counterion, and wherein a ratio of amine oxide to counterion is between 4:1 to 1:2, the system possesses a Trouton ratio of at least about 50 at a shear rate of 500-10,000 sec.-1, and an initial viscosity at 21° C. and 5 rpm of at least 20 cP.The present invention is characterized as a means of reducing the characteristic "bleach odor" found in hypochlorite cleaning compositions of the art, particularly those which are volatilized upon dispensing. The composition of the present invention may be formulated to have utility as a hard surface cleaner, or as a drain-opener.Other References
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