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Publication numberUS3650831 A
Publication typeGrant
Publication date21 Mar 1972
Filing date10 Mar 1969
Priority date10 Mar 1969
Publication numberUS 3650831 A, US 3650831A, US-A-3650831, US3650831 A, US3650831A
InventorsCarlo Armando, Herrick Aaron B, Jungermann Eric
Original AssigneeArmour Dial Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method of cleaning surfaces
US 3650831 A
Abstract
A method of removing deposits of soil from surfaces, which comprises applying to said surfaces a caustic alkali including an acid-base color indicator, and applying an aqueous solution which is sufficiently acidic to substantially neutralize the caustic and visibly change the color of the caustic. The method has particular efficacy for the cleaning of the interior surfaces of ovens and similar surfaces.
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Description  (OCR text may contain errors)

United States Patent Jungermann et al.

[451 Mar. 21, 1972 [54] METHOD OF CLEANING SURFACES [72] Inventors: Eric Jungermann, Chicago; Aaron B. Herrick, La Grange; Armando Carlo, Chicago, all of ill.

[73] Assignee: Armour-Dial, Inc., Chicago, Ill.

[22] Filed: Mar. 10, 1969 [21] Appl. No.: 805,797

[52] US. Cl ..134/27, 134/40, 252/156, 252/408 [51] Int. Cl ..B08b 3/08 [58] Field of Search 1 34/27, 28, 29, 22, 40; 252/408, 103, 156

[56] References Cited UNITED STATES PATENTS Phair ..252/408 X Sutton...

Primary Examiner-Joseph Scovronek Assistant ExaminerD. G. Millman Attorney-Carl C. Batz and Richard G. l-larrer [57] ABSTRACT A method of removing deposits of soil from surfaces, which comprises applying to said surfaces a caustic alkali including an acid-base color indicator, and applying an aqueous solution which is sufficiently acidic to substantially neutralize the caustic and visibly change the color of the caustic. The method has particular efficacy for the cleaning of the interior surfaces of ovens and similar surfaces.

5 Claims, No Drawings METHOD OF CLEANING SURFACES This invention relates to a method of cleaning deposits of soils from surfaces, for example, the interior surfaces of ovens and the like.

The cleaning of the interior surfaces of household cooking ovens is a difficult, tedious, and lengthy chore. A widely used oven cleaner is the spread-on, sodium hydroxide or potassium hydroxide formulations that are messy to apply and must be handled with care as the highly caustic material is capable of injuring the user. MOre recently, aerosol oven cleaners having a considerably lower concentration of alkali and containing a nonionic or ionic detergent with a solvent suchas water or alcohol have appeared. However, they are generally not as effective as the higher caustic content cleaners, although safer to use than the highly caustic formulas.

In accordance with the present invention a method is provided for removing deposits of soils from surfaces by applying to such surfaces a caustic, an acid-base color indicator, and thereafter applying an aqueous acidic solution to substantially neutralize the caustic, such as to a pH between about 4 and 10.5. When the caustic has been substantially neutralized, a color change takes place due to the presence of the acid-base color indicator thereby indicating to the user that the surface can be wiped clean without the need of rubber gloves or the worry of skin irritation. In a preferred embodiment, the method comprises applying to such surfaces a caustic alkali foam containing an acid-base color indicator, and then applying sufficient aqueous acidic solution to the surface so as to substantially neutralize the caustic and to effect a change in color of the caustic. In the alternative the acid-base indicator may be included in the aqueous acidic solution or may be applied apart from either the caustic or the acid.

We prefer that the caustic cleaner be in the form of a highly caustic alkali foam that is dispensed from an aerosol can. The caustic foam is left on the surface long enough to do its job, generally about 20-30 minutes in the case of ovens. The concentration of caustic used as percent.free hydroxyl may be from about 5 percent to about percent or more, preferably about 7-8 percent. Any strong caustic alkali may be used, such as sodium hydroxide or potassium hydroxide or mixtures thereof. It may be in the form of a water solution, and it is preferable that a surfactant or combination of surfactants be employed to impart foaming characteristics. The surfactant may be either anionic or nonionic, including but not restricted to anionic surfactants such as alkyl aryl sulfonates,.alcohol or fatty acid sulfonates or ether sulfates, alkyl amide or ester sulfonates, and fatty acid glycerol ester sulfates or ether sulfonates; and nonionic surfactants such as ethoxylated alcohols and alkylphenols, alkyanolamides, and block copolymers of ethylene and propyleneglycol. In addition a suitable potassium or sodium soap may optionally be added and may consist of various combinations of tallow, cocoa, red oil, tall oil, stearic and oleic fatty acids. A small amount of hexylene or propylene glycol may be added as a solubilizer; and various other ingredients may be added for their known effects such as sodium carboxy methyl cellulose or starch as thickening agents to aid foam adherence to the surface, and water soluble silicones as foam boosters and soil releaseagents. An example of a preferred caustic foamcleaner to be dispensed from an aerosol container is:

Ingredient 94 by weight 45% Potassium hydroxide l9.l7 Stearic acid 0.5 Oleic acid 4.8 Hexylene glycol 4.0 Acid-base indicator 0.2 Water 7l.4

Total 100.0%

Preferably 90-60 percent proportion of the above preferred cleaner is added, to an aerosol container along with 4-10 percent of a liquefied propellant for example fluorocarbons such as Freon 12 or Freon 114 or mixtures thereof or known hydrocarbon propellants.

The neutralizer should be sufiiciently acidic to reduce the alkalinity of the caustic to a relatively safe level. Suitable active ingredients include any generally weak acid or acid salt, and the following are preferred: sodium dihydrogen phosphate, citric acid, hemi sodium phosphate, carbamide phosphoric acid, gluconic acid, ethylene diamine tetracetic acid, phosphoric acid, and any appropriate combinations thereof. Other acids such as dilute mineral acids may be used but generally in low concentration or very dilute form. The acid is preferably present in about 10 3 to l0"6 moles per liter hydrogen ion concentration; but this is widely variable since merely more of lower concentrations and less of higher concentrations will be used to substantially neutralize the caustic. An example of a preferred neutralizer to be dispensed from an aerosol container is:

It is preferred to add a defoamer to aid in the penetration of the acid or acid salt into the caustic foam. In the alternative the incorporation of a soap in the first stage aids in defoaming by the neutralizer acting to convert the soap to a fatty acid.

Suitable acid-base indicators include any that effect a color or change or color at a pH of between about 4 and about 1 l and include but are not restricted to phenolphthalein, thymolphthalein, brilliant yellow, thymol blue, cresol purple, neutral red, phenol red, bromthymol blue, chlorphenol red, methyl red, bromcresol green, and alizarine yellow. The acidbase indicator may be added to the first stage formulation, thereby visibly coloring the caustic foam i.e., phenolphthalein in about 0.2 percent by weight concentration will produce a red foam in the above described specific preferred caustic, thymolphthalein will produce blue, brilliant yellow will produce orange, and meta cresol purple will produce purple. After the caustic has been applied and allowed sufficient time to work, the second stage neutralizer would be sprayed on prior to wiping. The neutralizer renders the caustic safe and the safe level is indicated by a change in color of the foam. Thus when a caustic foam that includes phenolphthalein is sprayed on the surface to be cleaned a red color is developed. When the neutralizer is applied the color disappears as the foam is substantially neutralized. Thymolphthalein indicator would also turn colorless, brilliant yellow indicator would become yellow and meta cresol purple would also become yellow. Bromthymol blue will change from blue to yellow and neutral red from light brown to red.

Although the compositions of the present invention may be applied by brushing or daubing, they are preferably applied from two separate aerosol cans and/or spr'ay bottles. As a further alternative the two-formulations may be applied via separate nozzles of a compartmentalized aerosol or via separable bottle aerosol nozzle and propellant combinations, and like means.

Thisinvention is still further illustrated by specific examples, which are not to be construed as composition limitations upon the scope thereof.

EXAMPLE I .Exemplary caustic formulations were prepared as set forth in Table 1. Each of the formulations was added to an aerosol container, using about -96 percent of the formulation and about 4-l0 percent of a suitable propellant such as dichloro difluoromethane (Freon 12), tetrafluoro dichloro ethane (Freon 114), pentafluoro monochloro ethane (Freon 115), trifluoro trichloro ethane (Freon 113) cyclic hexafluoro dichloro butane (Freon C 316), octafluoropropane (Freon 218), cyclic octafluoro butane (Freon C 318), propane, butane, pentane, isobutane, hexane, eptane, octane, nonane and decane, or mixtures thereof.

A preferred acidic formulation was prepared as set forth hereinabove. It was packaged in a spray bottle and also in an aerosol can propelled with carbon dioxide, nitrogen, nitrous oxide or a combination of Freon 12, Freon l l and Freon l 14.

The examples set forth in Table l were sprayed upon standard soiled panels. The panels had vitreous porcelain surfaces and the soil resulted from deposits of general organic food constituents, including butter, that had been subjected to about 350F. heat for 30 minutes. All products formed good initial foams that were evaluated for stability and adhesion after a 20-minute period. The panels were then sprayed with the neutralizing formulation until a change in color was observed. The foams then broke and the substantially neutralized residues were wiped off the panels with a cloth. No burns or skin irritation occurred. Where heavy spots of soil deposit remained, the panel was treated a second time. All soil was removed.

TABLE I 3. The method of removing deposits of calcined food soils from surfaces, which comprises applying to said surfaces a highly caustic foam having about 5 percent or more of free hydroxyl and containing an amount of an acid-base indicator that will roduce a color change at a H of about 4 to about 11; and t en applying an aqueous acr no solution to substantially neutralize-the caustic foam to produce a change in color of said foam.

43113 m e t hod of removing deposits of calcined food soils Example, percent by weight of ingredient Ingredient:

50% potassium hydroxide Surfactant (expressed as fatty acid). Ilexylono or propylene glycol. Water Thymolphthalein Phenolphthalein.. Brilliant yellow... Meta cresol purple. Para-nitro phenol...

Methyl red Phenol red Carboxymethyl cellulose 0.2

Total 100. 0 100. 0 100. 0 100. 0 100. 0 100.0 100.0

Color of caustic foam Blue Red Orange.-- Purple.... Yellow Yellow Red. Initial foam stability G d Good. G d Good..... Good. Good Good. Foam Stability, minutes Good. Good. Goo Poor Poor Good. Foam adhesion, 20 minutes..... Fair,...... Poor Poor Poor Poor.. Poor Poor. Neutralized color Colorless.. Colorless.. Yellow.. Colorless.. ed. Yellow. pH range of color. 9.3- 8.0- 7. 4- 7.0- 6. 2 8.0 Change l0.5....... 9.8 9.0 5.0 4.4.... 6.4. Soil removal Good... Good..... Good..... ood- Good..... G d-.... Good.

1 Color slightly unstable.

1 All foams were substantially neutralized by spraying ona% phosphate.

While this invention has been described with respect to specific embodiments of the method of removing deposits of soils from surfaces, such is by way of illustration and not in limitation; and it is to be understood that variations and modifications thereof obvious to those skilled the art may be made without departing from the spirit or scope of this inventron.

What is claimed is: g l

1. The method of removing deposits of soil from surfaces which comprises applying to said surfaces a caustic alkali having about 5 percent or more of free hydroxyl, said caustic containing an acid-base indicator that changes color at a pH weak acid solution of either citric acid or sodium hydrogen from surfaces which comprises applying to said surfaces an alkaline material containing a caustic alkali having about 5 percent or more of free hydroxyl and an acid-base indicator that produces a color change at a pH of about 4 to about 1 l; and then applying an aqueous solution which is sufficiently acidic to substantially neutralize the alkaline material and to change the color of the alkaline material.

5. The method of claim 4 in which said acid-base indicator is selected from the group consisting of phenolphthalein, thymolphthalein, brilliant yellow, meta cresol purple, thymol blue, neutral red, phenol red, methyl red, paranitro phenol and bromthymol blue.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1572848 *27 Aug 19249 Feb 1926American Sheet & Tin PlateRemoval of oxids from ferrous metal
US1849535 *19 Apr 192915 Mar 1932Kohnstamm & Co Inc HLaundry souring composition and method
US2034361 *23 Mar 192917 Mar 1936Sutton Roy CAlkaline detergent powder and method of making the same
US2502881 *17 Oct 19454 Apr 1950Weston Parker ElizabethHousehold cleaning composition
US2994664 *19 Feb 19581 Aug 1961Nalco Chemical CoDry acid cleaning compositions
US3031408 *7 Aug 195924 Apr 1962B T Babbitt IncAerosol oven cleanser
US3042621 *1 Nov 19573 Jul 1962Colgate Palmolive CoDetergent composition
US3042622 *1 Nov 19573 Jul 1962Colgate Palmolive CoAbrasive cleaning composition
US3511707 *8 May 196712 May 1970North American Detergent CorpMethod of cleaning a stone surface and composition therefor
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4006091 *14 Mar 19751 Feb 1977Amway CorporationPlastic bottle storable oven cleaner
US4390465 *22 Jun 198128 Jun 1983Fremont Industries, Inc.Low temperature composition for plating pretreatment of ferrous metals
US4683008 *12 Jul 198528 Jul 1987Sparkle Wash, Inc.Method for cleaning hard surfaces
US4965063 *2 Aug 198823 Oct 1990Irene CaseyCleaner and disinfectant with dye
US5154917 *11 Sep 199013 Oct 1992Beecham Inc.Color change mouthrinse
US5223245 *11 Aug 199229 Jun 1993Beecham Inc.Color change mouthrinse
US5482654 *9 Nov 19949 Jan 1996Warnaway CorporationSafety indicator system
US5626685 *24 May 19946 May 1997Spindler; William E.Method of removing a water insoluble surface coating from a surface
US5670469 *6 Jan 199523 Sep 1997Texas Research InstituteMethods and compositions for cleaning and decontamination
US5770222 *7 Jun 199523 Jun 1998Imarx Pharmaceutical Corp.Therapeutic drug delivery systems
US5776429 *30 Apr 19967 Jul 1998Imarx Pharmaceutical Corp.Method of preparing gas-filled microspheres using a lyophilized lipids
US5803795 *12 Jul 19968 Sep 1998Teisan Kabushiki KaishaMethod of treating inner surface of high-pressure gas vessel
US5830430 *21 Feb 19953 Nov 1998Imarx Pharmaceutical Corp.Cationic lipids and the use thereof
US5842815 *21 Nov 19961 Dec 1998Arthur Michael Rogers HowesChemical treatment of treading surfaces
US5846517 *30 Jan 19978 Dec 1998Imarx Pharmaceutical Corp.Methods for diagnostic imaging using a renal contrast agent and a vasodilator
US5853752 *6 Jun 199529 Dec 1998Imarx Pharmaceutical Corp.Methods of preparing gas and gaseous precursor-filled microspheres
US5922304 *9 Mar 199513 Jul 1999Imarx Pharmaceutical Corp.Gaseous precursor filled microspheres as magnetic resonance imaging contrast agents
US5935553 *25 Nov 199610 Aug 1999Imarx Pharmaceutical Corp.Methods of preparing gas-filled liposomes
US5985246 *8 Jul 199716 Nov 1999Imarx Pharmaceutical Corp.Contrast agents for ultrasonic imaging and methods for preparing the same
US5997898 *6 Jun 19957 Dec 1999Imarx Pharmaceutical Corp.Stabilized compositions of fluorinated amphiphiles for methods of therapeutic delivery
US6001335 *18 Jun 199614 Dec 1999Imarx Pharmaceutical Corp.Contrasting agents for ultrasonic imaging and methods for preparing the same
US6028066 *2 Jul 199722 Feb 2000Imarx Pharmaceutical Corp.Prodrugs comprising fluorinated amphiphiles
US6033645 *19 Jun 19967 Mar 2000Unger; Evan C.Methods for diagnostic imaging by regulating the administration rate of a contrast agent
US6033646 *19 Feb 19987 Mar 2000Imarx Pharmaceutical Corp.Method of preparing fluorinated gas microspheres
US6056938 *5 May 19982 May 2000Imarx Pharaceutical Corp.Cationic lipids and the use thereof
US6071494 *28 Aug 19986 Jun 2000Imarx Pharmaceutical Corp.Methods for diagnostic imaging using a contrast agent and a renal vasodilator
US6071495 *2 Oct 19976 Jun 2000Imarx Pharmaceutical Corp.Targeted gas and gaseous precursor-filled liposomes
US6088613 *7 Jun 199511 Jul 2000Imarx Pharmaceutical Corp.Method of magnetic resonance focused surgical and therapeutic ultrasound
US6090800 *6 May 199718 Jul 2000Imarx Pharmaceutical Corp.Lipid soluble steroid prodrugs
US6117414 *10 Nov 199712 Sep 2000Imarx Pharmaceutical Corp.Method of computed tomography using fluorinated gas-filled lipid microspheres as contract agents
US6120751 *8 Sep 199719 Sep 2000Imarx Pharmaceutical Corp.Charged lipids and uses for the same
US6123923 *18 Dec 199726 Sep 2000Imarx Pharmaceutical Corp.Optoacoustic contrast agents and methods for their use
US6139819 *17 Sep 199731 Oct 2000Imarx Pharmaceutical Corp.Targeted contrast agents for diagnostic and therapeutic use
US6143276 *21 Mar 19977 Nov 2000Imarx Pharmaceutical Corp.Methods for delivering bioactive agents to regions of elevated temperatures
US6146657 *1 Nov 199614 Nov 2000Imarx Pharmaceutical Corp.Gas-filled lipid spheres for use in diagnostic and therapeutic applications
US6156292 *20 Dec 19965 Dec 2000Sonus Pharmaceuticals, Inc.Gaseous ultrasound contrast media and method for selecting gases for use as ultrasound contrast media
US62318342 Dec 199715 May 2001Imarx Pharmaceutical Corp.Methods for ultrasound imaging involving the use of a contrast agent and multiple images and processing of same
US624531924 Mar 200012 Jun 2001Sonus Pharmaceuticals, Inc.Colloidal dispersions of perfluoropentane
US631598119 Mar 199913 Nov 2001Imarx Therapeutics, Inc.Gas filled microspheres as magnetic resonance imaging contrast agents
US63912263 May 199921 May 2002Laboratoires Choisy LteeCoating or sealing composition
US640305631 Mar 200011 Jun 2002Imarx Therapeutics, Inc.Method for delivering bioactive agents using cochleates
US64141393 Sep 19962 Jul 2002Imarx Therapeutics, Inc.Silicon amphiphilic compounds and the use thereof
US641674011 May 19989 Jul 2002Bristol-Myers Squibb Medical Imaging, Inc.Acoustically active drug delivery systems
US64438987 Jun 19953 Sep 2002Imarx Pharmaceutical Corp.Therapeutic delivery systems
US64446603 Feb 20003 Sep 2002Imarx Therapeutics, Inc.Lipid soluble steroid prodrugs
US646158610 Jul 20008 Oct 2002Imarx Therapeutics, Inc.Method of magnetic resonance focused surgical and therapeutic ultrasound
US647903417 Jul 199812 Nov 2002Bristol-Myers Squibb Medical Imaging, Inc.Method of preparing gas and gaseous precursor-filled microspheres
US65212113 Feb 199918 Feb 2003Bristol-Myers Squibb Medical Imaging, Inc.Methods of imaging and treatment with targeted compositions
US652803918 Jun 19974 Mar 2003Bristol-Myers Squibb Medical Imaging, Inc.Low density microspheres and their use as contrast agents for computed tomography and in other applications
US653724618 Jun 199725 Mar 2003Imarx Therapeutics, Inc.Oxygen delivery agents and uses for the same
US654804715 Sep 199715 Apr 2003Bristol-Myers Squibb Medical Imaging, Inc.Thermal preactivation of gaseous precursor filled compositions
US655157631 Mar 199822 Apr 2003Bristol-Myers Squibb Medical Imaging, Inc.Container with multi-phase composition for use in diagnostic and therapeutic applications
US657622010 May 200110 Jun 2003Imarx Therapeutics, Inc.Non-invasive methods for surgery in the vasculature
US658595531 Oct 19961 Jul 2003Bracco International B.V.Long-lasting aqueous dispersions or suspensions of pressure-resistant gas-filled microvesicles and methods for the preparation thereof
US659284612 May 200015 Jul 2003Bracco International B.V.Long-lasting aqueous dispersions or suspensions of pressure resistant gas-filled microvesicles and methods for thereof preparation thereof
US661330622 Sep 19992 Sep 2003Bracco International B.V.Ultrasound contrast agents and methods of making and using them
US662040428 Sep 200016 Sep 2003Amersham Health A/SGaseous ultrasound contrast media and method for selecting gases for use as ultrasound contrast media
US663876721 Dec 200028 Oct 2003Imarx Pharmaceutical CorporationMethods for delivering compounds into a cell
US674377929 Apr 19971 Jun 2004Imarx Pharmaceutical Corp.Methods for delivering compounds into a cell
US677369625 Oct 200210 Aug 2004Bristol-Myers Squibb Medical Imaging, Inc.Contrast agent comprising low density microspheres
US680872015 Jan 200226 Oct 2004Imarx Therapeutics, Inc.Charged lipids and uses for the same
US68148163 Oct 20039 Nov 2004Unilever Home & Personal Care Usa Division Of Conopco, Inc.Indicator kit
US687542018 Jul 19975 Apr 2005Amersham Health AsMethod of ultrasound imaging
US68813974 Feb 200219 Apr 2005Bracco International B.V.Long-lasting aqueous dispersions or suspensions of pressure-resistant gas-filled microvesicles and methods for the preparation thereof
US688440718 May 200026 Apr 2005Bristol-Myers Squibb Pharma CompanyMethods for diagnostic imaging involving the use of a contrast agent and a coronary vasodilator
US689687523 Aug 200224 May 2005Bracco International B.V.Mixable combination for generating a suspension of stable microbubbles for ultrasonic imaging
US698914112 Apr 200224 Jan 2006Bracco International B.V.Ultrasound contrast agents and methods of making and using them
US699810710 Jun 200414 Feb 2006Bristol-Myers Squibb Pharma ComapanyComposition comprising low density microspheres
US70780158 Nov 200418 Jul 2006Imarx Therapeutics, Inc.Ultrasound imaging and treatment
US708357226 Mar 20021 Aug 2006Bristol-Myers Squibb Medical Imaging, Inc.Therapeutic delivery systems
US708377812 Mar 20031 Aug 2006Bracco International B.V.Ultrasound contrast agents and methods of making and using them
US71051516 Jan 200312 Sep 2006Imarx Therapeutics, Inc.Oxygen delivery agents and uses for the same
US732940213 Jan 200312 Feb 2008Imarx Pharmaceutical Corp.Methods of imaging and treatment
US734470518 Oct 200518 Mar 2008Bristol-Myers Squibb Medical Imaging, Inc.Composition comprising low density microspheres
US745255130 Oct 200018 Nov 2008Imarx Therapeutics, Inc.Targeted compositions for diagnostic and therapeutic use
US75504224 Oct 200523 Jun 2009The Procter & Gamble CompanyComposition with a metal-complexing dye and surfactant
US761203318 Mar 20043 Nov 2009Imarx Pharmaceutical Corp.Methods for delivering compounds into a cell
US765198929 Aug 200326 Jan 2010Kimberly-Clark Worldwide, Inc.Single phase color change agents
US785856822 Jan 201028 Dec 2010Kimberly-Clark Worldwide, Inc.Single phase color change agents
US791053113 Jun 200522 Mar 2011C2C Technologies LlcComposition and method for producing colored bubbles
US80124572 Jun 20056 Sep 2011Acusphere, Inc.Ultrasound contrast agent dosage formulation
US806735027 Apr 200729 Nov 2011Kimberly-Clark Worldwide, Inc.Color changing cleansing composition
US808405622 Sep 200327 Dec 2011Lantheus Medical Imaging, Inc.Preparation of a lipid blend and a phospholipid suspension containing the lipid blend
US85860056 Aug 200719 Nov 2013Acusphere, Inc.Ultrasound contrast agent dosage formulation
US86582051 Aug 201125 Feb 2014Lantheus Medical Imaging, Inc.Preparation of a lipid blend and a phospholipid suspension containing the lipid blend
USRE3914615 Jul 199827 Jun 2006Bracco International B.V.Long-lasting aqueous dispersions or suspensions of pressure-resistant gas-filled microvesicles and methods for the preparation thereof
CN101035887B30 Sep 20059 Mar 2011宝洁公司A composition with a metal-complexing dye and surfactant
WO1996020995A1 *5 Jan 199611 Jul 1996Alan BrayCompositions containing a visible colorant and methods for cleaning and decontamination
WO2006041739A1 *30 Sep 200520 Apr 2006Procter & GambleA composition with a metal-complexing dye and surfactant
WO2008117233A1 *25 Mar 20082 Oct 2008Procter & GambleLiquid detergent composition system having a visual indication change
WO2008117235A1 *25 Mar 20082 Oct 2008Procter & GambleLiquid composition system having a visual indication change
WO2008141847A1 *28 Feb 200827 Nov 2008Unilever PlcTriphenyl methane and xanthene pigments
Classifications
U.S. Classification134/27, 510/197, 134/40, 436/163
International ClassificationC11D3/00, C11D7/06, C11D7/02, C11D3/40
Cooperative ClassificationC11D3/40, C11D3/0057, C11D7/06
European ClassificationC11D3/00B11, C11D7/06, C11D3/40