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US 5,851,981 AGranted
Reduced residue hard surface cleaner
AssigneeThe Clorox Company
InventorsClement K. Choy, Aram Garabedian, Jr., Jennifer C. Julian, Gary L. Robinson
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AssigneeThe Clorox Company
InventorsClement K. Choy, Aram Garabedian, Jr., Jennifer C. Julian, Gary L. Robinson
Estimating the term…
The invention provides an aqueous, hard surface cleaner with significantly improved residue removal and substantially reduced filming/streaking, said cleaner comprising: (a) an effective amount of at least one organic solvent with a vapor pressure of at least 0.001 mm Hg at 25.degree. C., and mixtures of such solvents; (b) an effective amount of at least one semi-polar nonionic surfactant, said surfactant having the structure: ##STR1## wherein R.sup.1 is C.sub.5-20 alkyl, R.sup.2 and R.sup.3 are both C.sub.1-4 alkyl, ##STR2## OR --(CH.sub.2).sub.p -OH, although R.sup.2 and R.sup.3 do not have to be equal, and n is 1-5, and p is 1-6; (c) an effective amount of a buffering system which comprises a nitrogenous buffer which will result in a pH of greater than 6.5; and (d) the remainder as substantially all water.
A method of cleaning soil, without substantial residue remaining, from a hard surface, comprising applying to said surface an aqueous, hard surface cleaner with significantly improved residue removal and substantially reduced filming/streaking, said cleaner comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Water-soluble compounds: hydroxides or bases
Non-ionic compounds: amino oxides
Water-soluble compounds: carbonates ; Bicarbonates
Monohydric alcohols: linear
Term ended 24 Mar 2015 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
The invention relates to a non-rinse, isotropic hard surface cleaner especially adapted to be used on glossy or smooth, hard surfaces, such as glass windows and the like, which removes soils deposited thereon, while significantly reducing the amount of residue caused by unremoved soil, cleaner, or a combination thereof.
2. Brief Statement of the Related Art
In Table I below, a base formulation "A" is set forth. Generally, the below examples of the compositions of this invention, as well as most of the comparative examples, will be based on the base formulation "A." In some of the examples (2-13), the sodium lauryl sulfate and dodecyl pyrrolidone will be eliminated, so that the effect of the surfactant alone can be determined.
TABLE I ______________________________________ Ingredient Formulation A ______________________________________ iso-Propyl Alcohol 5.90% Propyleneglycol t-Butyl Ether 3.20% Sodium Lauryl Sulfate 0.005% Dodecyl Pyrrolidone 0.012% Cocoamidopropylamine Oxide 0.20% Nitrogenotus Buffer 0.25% Fragrance 0.125% Ammonia 0.05% Deionized Water remainder to 100% ______________________________________
In general, to test the streaking/filming performance of the formulations, a small sample thereof was sprayed on glass mirror tiles and then wiped off. The results were graded by a panel of expert graders, on a scale of 0 to 10, with 0 being the worst and 10, the best.