DE69935672T2 - SHEARING DRAINAGE CLEANER - Google Patents

Description

BACKGROUND OF THE INVENTION

1. Field of the invention

The The present invention relates to a foaming cleaning composition and more particularly to an in-situ foaming cleaning composition, which contains a bleach and which is formulated to be a drain cleaner or as a cleaning agent for hard surfaces Use finds.

2. Description of the relevant status of the technique

The U.S. Patent 5,084,546 Hall discloses a personal care product, especially a foaming shower gel. As such, the foam-forming components must be biocompatible. Accordingly, Hall teaches only citric acid and a carbonate or bicarbonate to form carbon dioxide gas. There is nothing mentioned which would suggest a peroxide / hypochlorite system and the use for cleaning surfaces and opening drains are also not disclosed. The published Japanese applications of Ishimatsu et al JP 59-24798 and JP 60-32497 ; JP 59-164399 by Miyano et al; and Sakuma, JP 57-74379 disclose, describe and claim all of a binary foaming detergent used as an outlet for drains. Specifically, Miyano et al describe the benefits of a foam when opening drains. Ishimatsu et al and Miyano et al both describe an aqueous peroxide solution containing 0.25-25% active compound together with an aqueous solution of 0.25-6% hypochlorite, and both references describe the inclusion of surfactants in either one or in both solutions to enhance foaming. However, none of these references teach or disclose or suggest a thickened formulation, nor teach or suggest any associated advantages and foam characteristics.

A hypochlorite composition together with a chelating agent solution in a two-compartment container is in the US Pat. No. 5,767,055 disclosed by Choy et al.

Prior art drain cleaners have been formulated with a variety of active compounds in an effort to remove a variety of materials that can cause clogging or constriction of drains. Such active compounds may include acids, bases, enzymes, solvents, reducing agents, oxidizing agents and thioorganic compounds. Tobiason, U.S. Patent 5,264,146 Steer et al. US Pat. No. 5,630,833 and Taylor Jr. et al, U.S. Patent 4,664,836 reveal any dry compounds that form a foam when mixed with water in a drain. Kuenn, U.S. Patent 4,691,710 describes a dry, effective refuse churn cleaning composition that uses adipic acid and sodium bicarbonate to form a gas upon contact with water. This composition requires a mechanical shearing action from the chopper that aids in foaming. Davis, U.S. Patent 4,206,068 describes an exothermic effluent opening composition comprising an oxidizing agent and a reducing agent in a compartmented container.

SUMMARY OF THE INVENTION

in the In view of the state of the art, there remains a need for one foam-forming cleaning composition, which in addition is able to deliver a high percentage of active compound and to have a long contact time on non-horizontal surfaces. Farther there is a need for an in-situ foam-forming composition, the while Storage is stable and economical Way can be formulated.

A Another object of the present invention is to provide a composition capable of in situ one to form active compound bearing foam.

A Another object of the present invention is to provide a composition capable of producing a stable, foaming To form active cleaner.

A Another object of the present invention is to provide a two-component composition and a container, the every component during isolated from storage.

A Another object is to provide a drain-opening Composition that is safely formulated for storage and use is.

A Another object of the present invention is to provide a composition that is capable of one active one Compound containing foam to produce all affected Can reach parts of an outflow.

A Another object of the present invention is to provide a foaming cleaning composition, as a drain cleaner due to a viscoelastic rheology Use finds.

Yet Another object of the present invention is to provide a drain cleaning composition that is highly effective.

Yet An object of the present invention is to provide a cleaning composition that is used during normal storage as well while the storage at elevated or very low temperatures.

Yet Another object of the present invention is to provide a composition having a viscoelastic rheology and a long relaxation time to during the tax cheap flow properties to deliver.

More particularly, the composition is a product of two liquids, which are kept separate from each other prior to formation of a mixture during delivery to a surface to be treated, after which the mixture forms a foam sufficient for cleaning action and stability. A first liquid includes an oxidizing agent, preferably a hypohalite or hypohalite-forming agent (hereinafter "hypohalite"), and a second liquid includes a gas-forming agent, preferably a peroxide-containing or releasing agent Oxidants should be kept in an environment that is free of the gas generating agent and otherwise conducive to their cleaning activity and stability until the time of use, for example, by mixing the two liquids by simultaneously pouring into a drain, the hypohalite and peroxide react accordingly the following reaction equation with each other with liberation of oxygen gas: NaOCl + H ₂ O ₂ → O ₂ (g) + NaCl + H ₂ O

The released gas comes into contact with a surfactant in the solution, causing creates a foam that expands to fully fill the drainpipe. The expanded foam contains a surplus Hyophalogenite, used to clean the drain. The resulting Foam is stable and preferably by a density of above about 0.1 g / ml, a percentage of active compound of about 0.5-15, one Half-life of more than about 30 minutes; a volume of over about 500 ml; as well as an initial one Foam development rate of about 10-50 ml / s characterized. The foam stability is defined as the consistency of the foam opposite a force that tends to collapse or displace the foam. The foam is further characterized by a foam to liquid ratio of at least 1: 1, preferably 2: 1 and more preferably 3: 1 and one foam height sufficient to give a column in the drain, the bigger than 12 cm (measured from the center or bottom of the siphon and for a 3.2 cm diameter drain), more preferably greater than 17 cm and strongest preferably 17 to 31 cm. Regarding the foam volume and the Height in the drain the strongest preferably, an amount sufficient for this is the shutter mechanism to reach the drain, a body frequently covered by hair and / or soap contaminated. Such closure mechanisms are located typically about 20 cm up in the vertical tube. Preferably would the Foam more than 0.1% active compound, more preferably more than 0.5% active compound and the strongest preferably between about 0.75 and 3% active compound. A contact time with the active compound or a half-life of the foam should be between 0.5 and 4 hours, preferably between 1 and 8 hours are. The half-life of the foam is the time between the development of the maximum foam volume and a Volume reduction to 50% elapses when no external forces (except gravity) act on the foam. Furthermore, the foam itself forms, when generated by reaction of the components of the composition is, and does not require mechanical movement or other forms from physical activation.

In a preferred embodiment of the present invention, one or both of the liquids include a thickener or system which is present in an amount such that if the liquids form a mixture during delivery to a surface, the mixture results in a dense, stable foam sufficient for cleaning efficiency and stability. Therefore, by allowing the initially separated liquids to interact, the resulting liquid cleaning composition delivered to the surface will have the cleaning or bleaching activity and stability suitable for cleaning or bleaching this surface. The term "liquid" as used herein may include homogeneous liquids, solutions and suspensions Preferably an aqueous liquid is provided, but non-aqueous liquids are within the scope of the invention The thickener or system should be both viscous and viscous Both components are most preferred for achieving the desired foam characteristics Most preferably, the thickener or system imparts viscoelastic rheology to the respective liquid, but thickened, non-elastic or light elastic systems can Performance advantages therefore are within the scope of the invention The composition of the thickener system is less important than achieving at least one of the desired foam properties as defined herein.

The present invention also relates to a container which keeps the two liquids separate until delivery and ensures such delivery during which the mixture is formed at pH adjusted and delivered to a surface to be treated. The container includes a compartment for the hypohalite-containing liquid and another compartment for the peroxide-containing liquid. A compartment or both compartments may contain the thickening system or agent which, as described above, is present in an amount sufficient to thicken and for the stability of the fluid. In one aspect of the invention, the container for dispensing the two liquids may have separate dispensing channels for the two liquid components, after which the mixture is formed. These discharge channels may be designed to provide simultaneous delivery of the two liquids to the outside of the container, after which the two liquids meet to form the mixture. Alternatively, the separate dispensing channels may communicate with a mixing space in which the two liquids form the mixture and from which the mixture is discharged outside the container. An example of such a container is in the US Pat. No. 5,767,055 by Choy et al. described.

• (a) Einführen in einen Abfluss von entweder einer Zusammensetzung zum Reinigen, umfassend: (a) eine erste wässrige Flüssigkeit, die ein Oxidationsmittel umfasst; und (b) eine zweite wässrige Flüssigkeit, die ein gasbildendes Mittel umfasst, wobei die Zusammensetzung dadurch gekennzeichnet ist, dass mindestens eine aus der ersten und zweiten Flüssigkeit ein Betain-Tensid und ein Arylsulfonat-Tensid enthält, wobei die mindestens eine aus der ersten und zweiten Flüssigkeit, die ein Betain-Tensid und ein Arylsulfonat-Tensid enthält, viskoelastisch ist und wobei die erste und zweite wässrige Flüssigkeit vor der Bildung eines Gemisches während der Abgabe an eine zu behandelnde Oberfläche getrennt voneinander gehalten werden, wonach das Gemisch einen Schaum bildet, der zur Reinigungswirksamkeit und Stabilität ausreichend ist; oder

oder einer Zusammensetzung zum Reinigen, umfassend:

• (a) eine erste wässrige Flüssigkeit mit einer Viskosität von mindestens etwa 100 cP, einer relativen Elastizität von mindestens etwa 1 s/Pa und einer Relaxationszeit von mindestens etwa 0,3 s, die ein Oxidationsmittel und ein Tensid umfasst;
• (b) eine zweite wässrige Flüssigkeit mit einer Viskosität von mindestens etwa 50 cP, einer relativen Elastizität von mindestens etwa 1 s/Pa und einer Relaxationszeit von mindestens etwa 0,1 s, die ein gasbildendes Mittel und ein Tensid umfasst;

wobei die zweite wässrige Flüssigkeit dichter als die erste wässrige Flüssigkeit ist und die erste und die zweite wässrige Flüssigkeit derart in einem Zwei-Kammer-Behälter angeordnet sind, dass sie vor der Bildung eines Gemisches während der Abgabe auf eine zu behandelnde Oberfläche getrennt voneinander gehalten werden, wonach das Gemisch einen Schaum bildet, der zur Reinigungswirksamkeit und Stabilität ausreichend ist;
und (b) Belassen des durch die Zusammensetzung zum Reinigen gebildeten Schaums in Kontakt mit dem organischen Material der Verengungen, um damit zu reagieren.The present invention further includes a method for eliminating drainage pipe constrictions caused by organic materials, characterized by comprising the steps of:

• (a) introducing into an effluent of either a composition for cleaning, comprising: (a) a first aqueous liquid comprising an oxidizing agent; and (b) a second aqueous liquid comprising a gas generating agent, the composition being characterized in that at least one of the first and second liquids contains a betaine surfactant and an aryl sulfonate surfactant, the at least one of the first and second surfactants second liquid containing a betaine surfactant and an aryl sulfonate surfactant is viscoelastic and wherein the first and second aqueous liquids are kept separate from each other during formation on a surface to be treated prior to formation of a mixture, after which the mixture forms a foam, sufficient for cleaning efficiency and stability; or

or a cleaning composition comprising:

• (a) a first aqueous liquid having a viscosity of at least about 100 cP, a relative elasticity of at least about 1 s / Pa, and a relaxation time of at least about 0.3 s, comprising an oxidizing agent and a surfactant;
• (b) a second aqueous liquid having a viscosity of at least about 50 cP, a relative elasticity of at least about 1 s / Pa and a relaxation time of at least about 0.1 s, comprising a gas generating agent and a surfactant;

wherein the second aqueous liquid is denser than the first aqueous liquid, and the first and second aqueous liquids are arranged in a two-compartment container such that they are kept separate from each other prior to formation of a mixture during delivery to a surface to be treated whereafter the mixture forms a foam sufficient for cleaning efficacy and stability;
and (b) leaving the foam formed by the composition for cleaning in contact with the organic material of the constrictions to react therewith.

Briefly, a first embodiment of the present invention comprises a composition for cleaning comprising: (a) a first aqueous liquid comprising an oxidizing agent; and (b) a second aqueous liquid comprising a gas generating agent; wherein the composition is characterized in that at least one of the first and second liquids contains a betaine surfactant and an aryl sulfonate surfactant, the at least one of the first and second liquids containing a betaine surfactant and an aryl sulfonate surfactant, is viscoelastic, and wherein the first and second aqueous liquids are kept separate from each other prior to formation of a mixture during delivery to a surface to be treated, after which the mixture forms a foam sufficient for cleaning efficacy and stability.

It It should be noted that the term "cleanse" as used herein generally relates to a chemical, physical or enzymatic treatment, resulting in a reduction or removal of undesirable Material leads, and "cleaning composition" specifically refers to drain openers, Cleaning agent for hard surfaces and bleaching compositions. The cleaning composition can from a variety of chemically, physically or enzymatically reactive, active ingredients, such as solvents, acids, bases, Oxidizing agents, reducing agents, enzymes, detergents and thioorganic Includes connections. Unless otherwise indicated, are all Ingredient percentages by weight.

To for purposes of discussion of the invention disclosed herein a typical household drain drain four sections: a vertical one Section, from there a U-bend (or siphon), from there a 90-degree bend and ultimately a horizontal connecting arm.

A viscoelastic rheology is a single liquid or two liquids of the composition imparted by a binary system with a C _14-18 alkyl group or a C contains a betaine or sulphobetaine _10-18 alkylamino or -Alkylamidogruppe and an anionic organic counterion, which should promote elongated micelles. Such systems are more complete in the U.S. PSN 4,900,467 and 5,389,157 by Smith, assigned to the assignee of the present invention. Preferably, the betaine is C _14-18 alkyl betaine and the counterion is a C _2- C ₆ alkyl carboxylate, aryl carboxylate, C ₂ -C ₁₀ alkyl sulfonate, aryl sulfonate, sulfated aryl or a C ₂ -C ₁₀ alkyl alcohol, and mixtures thereof , Most preferably, the counterion is an aryl sulfonate, for example sodium xylene sulfonate. The counterion may contain substituents that are chemically stable with the active cleaning compound. Preferably, the substituents are alkyl or alkoxy groups having 1-4 carbon atoms, halogen atoms and nitro groups, all stable with most active compounds, including hypochlorite. The viscosity of the formulations of the present invention can range from slightly above that of water to several thousand centipoise (cP). From the consumer's point of view, a viscosity range of about 20 cps to about 2,500 cps is preferred. A preferred viscosity range for the first (oxidant-containing) fluid is about 100 to 2,500 cps, more preferably 500 to 2,200 cps. A preferred viscosity for the second (gas-forming) liquid is about 50-1,000 cps, more preferably 100-800 cps.

• (a) einer ersten Flüssigkeit, die eine Hypohalogenit-Verbindung umfasst; und
• (b) einer zweiten Flüssigkeit, die eine Peroxidverbindung umfasst;

umfasst, wobei mindestens eine der Flüssigkeiten (a) oder (b) viskos ist.The present invention also relates to a composition and a process for the purification of effluents, wherein the composition comprises separate aqueous solutions of:

• (a) a first liquid comprising a hypohalite compound; and
• (b) a second liquid comprising a peroxide compound;

wherein at least one of the liquids (a) or (b) is viscous.

The liquids (a) and (b) are used during the storage kept separate from each other and at the same time or combined immediately prior to use. Preferably the liquids (a) and (b) held in a 2-compartment or compartment bottle and at the same time poured into the drain, with the foaming occurs. The resulting foam is stable and dense and contains one high percentage of active cleaning compound, in particular Hypohalite, which is the vertical part and the upper siphon a drain coated. The rheology of each composition delivers a cheap Foaming rate and residence time, resulting in an excellent Cleaning efficiency leads. The foaming rate should be relatively low, preferably less than about 50 ml / s, and the foam should last for an extended period of time stay stable. The rheology also allows a filling of the container for example while the manufacture and offers for consumer acceptable pouring properties while the delivery and use. The preferred viscoelastic rheology may also be by a thickener, preferably a surfactant thickener be lent. While only one solution may be viscoelastic, it is preferred that both be viscoelastic are and can using the same or different thickening agents or systems become. The strongest Preferably, the viscoelasticity of both liquids (a) and (b) by lent the same thickening agent or system.

It is therefore an advantage of the present invention that the composition is chemically stable and phase stable and such stability both maintains at high and low temperatures.

One Another advantage of the present invention is that the foaming Composition in its formulation as a drain opener increased Contact time provides what improves the effectiveness of the cleaner.

One Another advantage of the present invention is that the improved efficacy, resulting from the increased contact time, safer Drain cleaning formulations allows.

One Yet another advantage of the present invention is that the composition in situ a stable, active compounds forming foam forms.

One further advantage of the composition of the present invention is that the rheology of the composition is a filling of containers and allows a levy.

These and other items and advantages of the present invention will become apparent to those skilled in the art after reading the following section "Detailed description of the preferred embodiments "without doubt.

DESCRIPTION OF THE DRAWING

1 Figure 4 is a graph comparing foaming rates of a composition of the present invention with other compositions.

DETAILED DESCRIPTION THE PREFERRED EMBODIMENTS

oxidant

The Oxidizing agent may preferably be made of various hypohalite-generating Species selected be, for example, halogen bleaching, consisting of the group consisting from the alkali metal and alkaline earth salts of hypohalite, haloamines, Halogenimines, haloimides and haloamides are selected. It is believed that all of these in situ hyohalite-containing bleaching species produce. Preferably, the first oxidizing agent is a hypohalite or a hypohalite builder, capable of forming hypohalite-containing bleaching species is. As used herein, the term "hypohalite" is used for description both a hypohalite and a hypohalite builder unless otherwise stated. Hypochlorite and Hypochlorite-producing compounds in aqueous solution are preferred, though Hypobromite is also suitable. Representative hypochlorite-producing compounds include sodium, potassium, lithium and calcium hypochlorite, chlorinated Trisodium phosphate dodecahydrate, potassium and sodium dichloroisocyanurate and trichlorocyanuric acid. Suitable organic bleach sources for use include heterocyclic N-bromo and N-chloro imides like trichlorocyanuric acid and tribromocyanuric acid, Dibromo and dichloro cyanuric acid and potassium and sodium salts thereof, N-brominated and N-chlorinated Succinimides, malonimides, phthalimides and naphthalimides. hydantoins such as dibromo- and dichlorodimethylhydantoin, chlorobrominedimethylhydantoin, N-chlorosulfamide (Haloamide) and chloramine (haloamine) are also suitable. Sodium hypochlorite is particularly preferred in this invention with the chemical formula NaOCl in an amount of about 0.1 Percent by weight to about 15% by weight of the first liquid, stronger preferably about 0.1 to 10 weight percent, and most preferably about 1 to 8 weight percent is enough. The oxidizing agent can in a stoichiometric Amount of gas-forming agent for foaming present. If this is the case, it is preferred that a separate active Cleaning compound in one or both of the first and second liquid is included. Stronger it is preferred that the oxidizing agent in a stoichiometric excess is present to both form foam and provide a cleaning and drainage opening activity.

Gas-forming agent

The gas generating agent is a compound capable of reacting with the oxidizing agent to form a gas, and is preferably a peroxide or a peroxide generator such as hydrogen peroxide or a peracid or a persalt, including both organic and inorganic peracids and persalts , such as peracetic acid or monoperoxysulfate. A number of peroxides, peracids and persalts are known in the U.S. Patent No. 4,964,870 by Fong et al. disclosed.

Hydrogen peroxide is normally sold as a liquid, although other hydrogen peroxide sources also function satisfactorily. For example, perborate and percarbonate can also provide H ₂ O ₂ in solution. The gas-forming agent is present in an amount of about 0.01 to 8 weight percent of the second liquid, preferably about 0.1 to 5 weight percent, and most preferably about 0.2 to 3 weight percent.

is Peroxide is the gas generating agent and hypohalite is the oxidizing agent, is a preferred weight ratio (by a stoichiometric excess from hypohalite to peroxide about 20: 1 to 3: 1, more preferably about 15: 1 to 7: 1 and the strongest preferred is 12: 1 to 5: 1. A preferred molar ratio (μm a stoichiometric excess from hypohalite to peroxide is about 10: 1 to 1: 1, more preferably about 7: 1 to 5: 4 and the strongest is preferred it's about 5: 1 to 2: 1.

Electrolyte / buffer

One Electrolyte / Buffer can be in either the first or the second fluid be included and is preferably in the first, oxidant-containing liquid contained in a buffering effective amount.

According to the present Invention can suitable electrolytes / buffers from the group consisting of a Carbonate, a phosphate, a pyrophosphate, an aminocarboxylate, a polycarboxylate, a polyacrylate, a phosphonate, a Aminophosphonate, a polyphosphonate, a salt thereof and a Mixture thereof, selected be. The electrolyte / buffer is present in an amount that is from 0 to about 5 percent by weight of the first liquid, preferably from from about 0.01 to about 4 percent by weight of the first liquid enough.

pH adjusting agents

One pH adjusting agent can be either in one or both liquids present, i. with the oxidizing agent and / or the gas-forming Medium. According to the present Invention stops the pH adjusting agent maintains the pH of the liquid such that the active agent therein is stable and effective. The pH adjusting Means can be in solution either alkaline or acidic and accordingly it serves for Setting every solution to an alkaline or acidic pH or to its maintenance. In the present invention, each solution is kept at a pH, the for the activity and stability of the Oxidizing agent or the gas-forming agent and / or the active Cleaning compound is suitable. For an alkaline oxidizer Like a hypohalite, the solution pH is alkaline. If that Gas-forming agent is peroxide, the pH is acidic. The pH adjusting Agent may be effective in adjusting the pH such as between about 0 and about 10 weight percent of one of the liquids available.

suitable Acidic pH-adjusting agents include organic acids, in particular Carboxylic acids like Citric acid, glycolic or acetic acid, weak inorganic acids like boric acid or sodium bisulfate and diluted solutions strong inorganic acids like sulfuric acid, Hydrochloric acid, pyrophosphates, Triphosphates, tetraphosphates, silicates, metasilicates, polysilicates and Borgte and mixtures of the foregoing. If the gas-forming Medium peroxide is a preferred acidic pH adjusting agent Medium sulfuric acid. For one Peroxide-containing liquid, In particular, hydrogen peroxide, it is preferred that the pH under about 7, stronger preferably kept between 3 and 6, for stability and effectiveness maintain the peroxide compound. An acid pH-adjusting Middle is in an amount of 0 to 5 weight percent to the second Liquid, preferably from 0.001 to 2% by weight.

Preferred alkaline pH adjusting agents include carbonates, bicarbonates, hydroxides, hydroxide formers and mixtures thereof. When the oxidizing agent is a hypohalite, a preferred alkaline pH adjusting agent is an alkali metal hydroxide, especially sodium hydroxide. For example, when a hypohalite oxidizing agent is used, the pH of the solution is preferably maintained above about 10, preferably above about 10.5, and most preferably above about 11. It is believed that a solution pH above about 11 is sufficient for both the cleaning efficacy and the stability of the hypohalite. More particularly, it is believed that this solution pH is sufficient to protect against the autocatalytic destruction of the hypohalite, which may otherwise occur when the solution is formed. An alkaline pH adjusting agent is in an amount of 0 to 20% by weight to the first liquid, preferably 0.1 to 15 weight percent before.

thickener

One or both of the first oxidizer solution and the second gas-forming solution or fluids is thickened, preferably with a surfactant thickener. Suitable thickening agents are as described in the Smith patent, referred to above. Other suitable systems can be found in the disclosures of U.S. Patent 5,055,219 and the U.S. Patent 5,011,538 from Smith, the U.S. Patent 5,462,689 and the US Pat. No. 5,728,665 by Choy et al. being found.

additional Thickeners such as polymers and gums are suitable as long as the desired foam characteristics and / or the desired Rheology is achieved. The strongest preferred is a binaries viscoelastic surfactant thickener, which comprises a betaine and an anionic counterion.

betaine

Functional betaines include the C _14-18 and C _14-18 -Alkylbetaine -Alkylsulfobetaine. Particularly preferred is a cetyl dimethyl betaine (CEDB) such as Amphosol CDB (a proprietary product of the Stepan Company) which is about 95% or more C ₁₆ , less than 5% C _12/14, and less than 1% C ₁₈ . It is noted that when reference is made herein to the carbon chain length of the betaine or other compound, commercial, polydisperse forms are intended (but not required). Therefore, a given chain length within the preferred C _14-18 range will be predominantly, but not exclusively, the specified length. As used herein with respect to betaine or sulfobetaine, the term "alkyl" includes both saturated and unsaturated groups Fully saturated alkyl groups are preferred in the presence of hypochlorite, C _10-18 alkylamido and alkylaminobetaines and sulfobetaines with C _{14 -18} -alkyl or C _10-18 -alkylamino or -alkylamido groups are also suitable for use in the compositions of the present invention.

The Betaine is added in concentrations in combination with the counterion to thickening are effective. In general, about 0.1 to 10.0 weight percent of the betaine for each of the first and / or second liquid used and the use of about 0.1 to 5.0% betaine is preferred and the strongest preferred are about 0.15 to 2.0% betaine.

counterion

The counterion is an anionic organic counterion selected from the group consisting of C _2-6 alkyl carboxylates, aryl carboxylates, C _2-10 alkyl sulfonates, aryl sulfonates, sulfated C _2-10 alkyl alcohols, sulfated aryl alcohols and mixtures thereof. The aryl compounds are derived from benzene or naphthalene and may or may not be substituted. The alkyl groups may be branched or straight chain, and preferred are those having two to eight carbon atoms. The counterions can be added in acid form and converted to the anionic form in situ, or they can be added in anionic form. Suitable substituents for the alkyl or aryl groups are C _1-4 alkyl or alkoxy groups, halogens, nitro groups and mixtures thereof. Substituents such as hydroxy or amine groups are suitable for use with some non-hypochlorite active cleaning compounds, such as solvents, surfactants and enzymes. If present, a substituent may be in any position on the rings.

When benzene is used, the para (4) and meta (3) positions are preferred. In certain circumstances, the active cleaning compound may itself be in the class of thickening effective counterions. For example, some active carboxylic acid cleaning compounds may be in both the acid form and the corresponding base form, the latter could serve as the counterion. The C _2-6 alkyl carboxylates may function in this manner. The counterion is added in an amount sufficient to thicken and result in a viscoelastic rheology, and is preferably between about 0.01 and 10 weight percent. A preferred molar ratio of betaine to counter ion depends on the chain length and concentration of the betaine, the type of counter ion and the ionic strength of the solution, as well as whether the primary target of the composition is phase stability or viscosity. Using CEDB and sodium xylene sulfonate (SXS), a preferred molar ratio is about 10: 1 to 1: 3, and more preferably about 2: 1 to 1: 2. A preferred weight ratio of CEDB to SXS is about 15: 1 to 1: 2, and more preferably 3: 1 to 1: 1.

The viscoelasticity the thickener advantageously adds to the cleaning composition unusual Flow properties. elasticity causes the jet to break apart at the end of the pouring and back goes into the bottle instead of forming syrupy ribbons. Still seem elastic fluids more viscous than its viscosity indicates. The viscoelastic properties of a liquid can with Instruments such as a Bohlin VOR rheometer. A frequency scan Using a Bohlin rheometer can generate oscillation data that when applying a Maxwell model to parameters such as relaxation time (Rope) and static shear modulus (G0). The relaxation times The formulation in the present invention is between about 0.1-50 Seconds, preferably between about 0.3-45 seconds, more preferably between about 1-30 Seconds and strongest preferably between about 5-25 Seconds. The relationship relaxation time to static shear modulus (Tau / G0), formerly Smith as relative elasticity should be between about 1-300 s / pascal (Pa), preferred between about 5-150 s / Pa and stronger preferably between about 10-100 s / Pa lie. While the thickening agents described herein are effective in viscoelasticity over a Range of solution ionic strengths too ionic strength affects the rheology to one certain degree. Unless otherwise indicated, those are herein given relaxation times, relative elasticities and viscosities accordingly for a first (hypohalite-containing) liquid with an ionic strength of about 2.4 molal and a second (peroxide-containing) liquid with an ionic strength calculated from about 3.4 molal. Examples of such liquids are shown in Table III as formula (b) and (e), respectively.

ADDITIVES

A Number of classes of supplementary compounds are known and with the first and second liquid as well as components of it compatible. Such a class is active Additional cleaning compounds with their intended target materials either by chemical or enzymatic reaction or by physical Interactions, collectively referred to as reactions below be interacting. It is noted that either the oxidizing agent or the gas-forming agent as the active cleaning compound can act, especially if one in a stoichiometric excess across from the other is present. Preferably, the oxidizing agent is in one stoichiometric excess across from the gas-forming agent IN ANY; however, in addition one can be included active cleaning compound. Useful active compounds contain acids, Bases, oxidizing agents, reducing agents, solvents, enzymes, thioorganic Compounds, surfactants (detergents) and mixtures thereof. Examples The enzymes include lipases, keratinases, proteases, amylases and cellulases. helpful solvent include saturated Hydrocarbons, ketones, carboxylic esters, terpenes, glycol ethers and the same. Thio-organic compounds such as sodium thioglycolate can be included to contribute to the breakdown of hair and other proteins. Various non-ionic, anionic, cationic or amphoteric surfactants can, as in the prior art is known to contain due to their detergent properties be. Examples include taurates, sarcosinates and phosphate esters. Other non-cleaning active additives, as known in the art, Like corrosion inhibitors, dyes and odors can as well be included.

While compositions with viscous rheology, particularly viscoelastic rheology, have utility when applied to drains with porous or partial blockages, full benefit is obtained when the composition is thickened and has a density greater than water. This density can be achieved without the need for a densifying material, but if it is necessary to increase the density, a salt such as sodium chloride is preferred and may be added in concentrations of 0 to about 25% by weight of the liquid, preferably 12-25% by weight , It is preferred that the second liquid, ie the one containing the gas-forming agent, be denser than the first liquid, ie the one containing the oxidizing agent. At this time, the gas-forming agent fills the lowermost part of the siphon and the first liquid containing the oxidizing agent will "cover" the second liquid on both sides of the siphon, ie in the 90-degree bend and in the vertical pipe In this way, in principle occurs at the interface of the two liquids and in the lowest portions of the siphon, which allows the foam to expand upwardly to fully contact the clogged portions of the drain, particularly the vertical tube. The expanding gas passes through the oxidant, entrains it into the foam and distributes it throughout the tube, and the foaming rate is further slowed by the rheology of the first and second fluids, so that the foam is long-lasting and delivers a greater percentage of active compounds The rheology of the oxidant-containing first fluid is controlled specifically the foaming at least in two ways. First, the viscosity and elasticity of the first solution acts to cover the denser second solution, particularly on the vertical side of the siphon, providing a slow, continuous foaming reaction. Second, the rheology of the first fluid, which remains in the 90-degree bend of the tube, as a physical clogging of the tube, which prevents the liquids and / or the foam from being discharged into the downcomer of the drain. For the foregoing reasons, it is most preferred that the first liquid has a specific gravity of about 1.10 or greater and the second fluid has a specific gravity greater than that of the first, more preferably about 1.12 or greater. A preferred second to first liquid specific gravity ratio is about 1.01: 1 to 1.5: 1.

1 Figure 4 shows foaming / decomposition curves for 4 different thickening systems in conjunction with the preferred hypochlorite / peroxide oxygen / gas formation system of the present invention. Formula A (Curve A) uses the preferred betaine plus sodium xylene sulfonate thickener in both the hypochlorite solution and the peroxide solution.

The composition used to make Curve (A) is comprised of Examples (b) and (e) as shown in Table III. Curve / Formula B uses the preferred betaine plus sodium xylene sulfonate in the hypochlorite solution of Example (b) in Table III and the ethoxylated alcohol thickener of Table III (f) in the peroxide solution. Formula C (curve C) uses the preferred thickening system with the peroxide (Table III (e)) and the amine oxide / soap (Table III (c)) with the hypochlorite. Finally, curve D uses the amine oxide / soap thickener (Table III (c)) for the hypochlorite and the ethoxylated alcohol thickener from Table III (f) in the peroxide solution. It is noted that all of them are for generating the curves 1 used thickening agents are within the scope of the present invention.

The following table (Table I) illustrates the important rheological characteristics of the hypochlorite and peroxide components for each of the 1 shown formulas. Table I formula Viscosity (cP) Relative elasticity (s / Pa) Relaxation time (s) A Hypochlorite (b) 1232 26 32.1 Peroxide 456 50.3 33.6 B Hypochlorite (b) 1232 26 32.1 Peroxide (f) 2112 0,002 0.13 C Hyprochlorite (c) 1880 0.02 0.36 Peroxide 456 50.3 33.6 D Hypochlorite (c) 1880 0.02 0.36 Peroxide (f) 2112 0,002 0.13

In the figure, the foam volume was measured by pouring about 500 ml of a composition according to Example 10, Table V into a 2 liter graduated cylinder. The viscosities were measured on a Brookfield rheometer, model DV-II + with a ^Teflon® coated spindle number 2 at 5 rpm at 2 minutes. Tau, G0 and relaxation times were measured at 25 ° C on a Bohlin VOR in oscillation mode.

The foam volume was visually measured at various intervals. An initial phase (or phase I) of foaming begins when the first and second liquids are combined, for example, in a drain or on a surface at time 0 (t ₀ ). The initial phase generally lasts about 60 seconds, preferably about 50 seconds, from t ₀ . A secondary phase (or Phase II) begins at the end of the initial phase and lasts about 20 to 500 seconds, preferably about 30 to 300 seconds, after the initial phase ends. Following the end of the secondary phase, a tertiary phase (or phase III) continues for a further 80 to 3600 seconds, preferably 90 to 1000 seconds.

Upon completion of the tertiary phase, the foam is substantially degraded; therefore, an exact endpoint is not critical. Furthermore, the duration of both the secondary phase and the tertiary phase is of lesser importance than the duration of the initial phase because the initial phase is the initial one Defined foaming kinetics, which is important for treatment efficacy.

at a rate of formation greater than about 60 ml / s, the foam tends to drain into the connection pipe, resulting in a minimum contact time. At less than about 20 There will be insufficient foam "moment" in ml / s to attack the blockage. The first two phases define a foam development: one initial rapid increase (phase I) and a second, slow increase (phase II). The tertiary Phase defines a very slow increase up to a slow one Loss. It is preferred that phase I be at about 10-50 ml / s, stronger preferably 15-45 ml / s and the strongest preferably 25-40 ml / s occurs. Preferably, Phase II occurs at 0.01-6 ml / s, more preferably at 0.1-5 ml / s and the strongest preferably at 1-3.5 ml / s. In Phase III, the rate of foaming should be about 0.001 ml / s to ~ 0.2 ml / s.

Out 1 it can be seen that curve A reflects the most preferred performance, with a fast initial phase; a slower second phase; and a final slow degradation phase shows. While the remaining curves B, C, and D show performance within the scope of the present invention, they do not use the most preferred thickening system with both the hypochlorite component and the peroxide component. Therefore, they do not give the same curve.

Table II below shows preferred viscosity, relative elasticity and relaxation time ranges for each of the preferred oxidizers and gas generants. Table II oxidant Gas-forming agent Viscosity (cps) 100-2500 50-2500 Relative elasticity (Tau / G0) 1-300 1-300 Relaxation time (s) > 0.3 > 0.1

The above-mentioned parameters viscosity, relaxation time and relative elasticity affect the actual Performance of the compositions of the present invention and it's the strongest preferred that each of the first and second liquids all three of the desired Owns properties. However, there are a lot of variables, that influence the rheology. Therefore, it is understood that the rheological properties herein to define a composition within the scope of the present invention, preferably by the functional foam characteristics and cleaning efficiency is not necessarily exhaustive. compositions are within the scope of the present invention when they a liquid containing at least one of the rheological properties, as long as foaming and cleaning efficiency are achieved. Preferably, a liquid at least one of the properties on and the remaining liquid has at least two such rheological properties. More preferred indicates one of the liquids at least two and the other three rheological properties.

• (i) ein Hypohalogenit;
• (ii) einen Korrosionsinhibitor;
• (iii) einen Puffer;
• (iv) ein pH-einstellendes Mittel und
• (v) ein Verdickungsmittel umfasst;

sowie eine zweite Flüssigkeit, die

• (i) ein Peroxid;
• (ii) ein pH-einstellendes Mittel;
• (iii) ein Mittel zur Erhöhung der Dichte; und
• (iv) ein Verdickungsmittel umfasst;

wobei die erste und zweite Flüssigkeit getrennt voneinander, beispielsweise in getrennten Kammern einer Zwei-Kammer-Flasche gehalten werden und sich bei, gleichzeitig mit oder kurz nach der Abgabe in einen Abfluss vermischen. Ein am stärksten bevorzugtes Verfahren zum Öffnen von Abflüssen beinhaltet das gleichzeitige Eingießen einer ersten und einer zweiten Flüssigkeit aus einer Zwei-Kammer-Flasche in einen zu reinigenden Abfluss und das Zersetzenlassen der Verstopfung über einen Zeitraum durch den mit aktiver Verbindung angereicherten Schaum.The present invention further relates to a drain-opening formulation and method of use. The formulation contains a first liquid which:

• (i) a hypohalite;
• (ii) a corrosion inhibitor;
• (iii) a buffer;
• (iv) a pH adjusting agent and
• (v) comprises a thickening agent;

and a second liquid, the

• (i) a peroxide;
• (ii) a pH adjusting agent;
• (iii) a means for increasing the density; and
• (iv) comprises a thickening agent;

wherein the first and second liquids are kept separate from each other, for example, in separate chambers of a two-chamber bottle and mix at, simultaneously with, or shortly after discharge into a drain. A most preferred method for opening drains involves the simultaneous pouring of a first and a second liquid from a two-chamber bottle into one The effluent and decomposition of the blockage over a period of time through the active compound-enriched foam.

• (i) ein C_14-18-Alkylbetain oder -sulfobetain;
• (ii) ein anionisches organisches Gegenion;
• (iii) ein Alkalimetallhydroxid;
• (iv) ein Alkalimetallsilikat;
• (v) ein Alkalimetallcarbonat; und
• (vi) ein Alkalimetallhypochlorit umfasst;

sowie eine zweite Zusammensetzung, die

• (i) ein C_14-18-Alkylbetain oder -sulfobetain;
• (ii) ein anionisches organisches Gegenion;
• (iii) Wasserstoffperoxid;
• (iv) Schwefelsäure; und
• (v) Natriumchlorid umfasst.

A preferred example of a drain cleaning formulation includes a first composition which

• (i) a C _14-18 alkyl betaine or sulfobetaine;
• (ii) an anionic organic counterion;
• (iii) an alkali metal hydroxide;
• (iv) an alkali metal silicate;
• (v) an alkali metal carbonate; and
• (vi) an alkali metal hypochlorite;

and a second composition, the

• (i) a C _14-18 alkyl betaine or sulfobetaine;
• (ii) an anionic organic counterion;
• (iii) hydrogen peroxide;
• (iv) sulfuric acid; and
• (v) includes sodium chloride.

Components (i) and (ii) comprise the viscoelastic thickener and are as previously described. The alkali metal hydroxide is preferably potassium or sodium hydroxide and is present in an amount between about 0.5 and 20%. The preferred alkali metal silicate is one having the formula M ₂ O (SiO) _n wherein M is an alkali metal and n is between 1 and 4. Preferably M is sodium and n is 3.2. The alkali metal silicate is present in an amount of about 0 to 5 percent. The preferred alkali metal carbonate is sodium carbonate in concentrations between about 0 and 5 percent. About 1 to 15 percent hypochlorite is present, preferably about 4 to 8.0 percent.

in the Generally, the preferred betaine is for use with hypochlorite an alkyldimethylbetaine or sulfobetaine compound having a Alkyl group having 12 to 18 carbon atoms and most preferred is the betaine CEDB. The alkylamidobetaines and alkylaminobetaines are not preferred in the presence of hypochlorite. Even if Hypochlorite is present, the composition is not more than about 1.0 weight percent betaine most stable, although up to about 10 percent by weight of betaine can be used. Substituted benzenesulfonic acids are is preferred as the counterion, with xylenesulfonic acid being most preferred.

While that Hypochlorite / peroxide foaming system is preferred, others may Systems used for the formation of foam, as long as the desired Foam characteristics are achieved. Most preferred are such Foam characteristics achieved when one or both solutions viscous are, and stronger when one or both of the solutions are viscoelastic, being a relationship from Tau / G0 from 1-300 and a relaxation time of at least about 0.3 s, preferably have at least about 5 s.

FORMULATION EXAMPLES

Formulation Example 1 Liquid 1 - Oxidizing agent weight Liquid 2 - gas generator weight sodium hypochlorite 1-15 hydrogen peroxide 0.01-5.0 sodium hydroxide 0.1-20 sodium chloride 0-30 sodium 0-5 sulfuric acid 0.001-5 sodium silicate 0-5 betaine 0.1-10 betaine 0.1-10 SXS 0.1-10 SXS 0.1-10

EXPERIMENTAL

TABLE III example formula Foaming rate (ml / s) Phase I Phase II Phase III 1 b + e 27 3.0516 -0.0759 2 b + e 26 3.2432 -0.0584 3 b + f 31 .7841 -0.0574 4 c + e 29 0.0177 n / A 5 c + f 38 .1765 -0.651

• (b) = 5.80% sodium hypochlorite, 1.85% sodium hydroxide, 0.0578% Sodium carbonate, 0.1128% sodium silicate, 0.78% betaine, 0.39% SXS.
• (c) = 5.57% sodium hypochlorite, 2.50% sodium hydroxide, 1.10% sodium silicate, 1.00% C ₁₄ amine oxide, 0.18% C ₁₆ amine oxide, 0.58% C ₁₀ fatty acid soap, 0 , 34% C ₁₂ fatty acid soap.
• (e) = 0.50% hydrogen peroxide, 20% sodium chloride, 0.015% sulfuric acid, 0.374% Betaine, 0.262% SXS.
• (f) = 0.51% hydrogen peroxide, 10% sodium chloride, 10% ethoxylated Alcohol sulphate (sodium salt).

foregoing Table III shows the mean of the foaming rate for the phases I and II and the mean for the foam degradation rate for 5 different formulations of hypochlorite / peroxide with the indicated Thickening systems. Examples 1 and 2 illustrate this Performance of the strongest preferred embodiments, both components thickened with the preferred system. Examples 3 and 4 include a binary component associated with the the strongest preferred thickening agent has been thickened, and the other binary Component containing a less preferred thickener has been thickened, as indicated in the table. example 5 is a thickened with amine oxide and ethoxylated alcohol sulfate binary System still within the scope of the present invention lies.

Table IV below shows the chemical stability at various storage temperatures of both the bleach and peroxide compositions. The numbers given are percentages of the remaining active compound. The stability of the active compounds is very good, especially for the peroxide composition containing 20% NaCl. High ionic strength tends to destabilize peroxides, therefore the peroxide stability is surprising, and it is believed that this is due to the action of the thickening system to immobilize the ions (as well as residual metals) in the composition. The bleaching composition of Table IV comprises the following proportions of active compounds in weight percent: 5.80% sodium hypochlorite, 1.85% sodium hydroxide, 0.0578% sodium carbonate, 0.1128% sodium silicate, 0.78% betaine, 0.39% SXS , The peroxide composition comprises 0.51% hydrogen peroxide, 20% sodium chloride, 0.015% sulfuric acid, 0.3742% betaine and 0.2616% SXS. Table IV: Remaining active compound in percent bleaching composition peroxide Time (weeks) 2 ° C 21 ° C 38 ° C 2 ° C 21 ° C 38 ° C 4 99 95 66 99 99 90 8th 97 88 48 100 97 77 12 94 84 38 100 98 74 16 93 79 31 100 95 61 26 87 72 23 100 88 31

Table V shows the effect of the type and rheology of the thickener on the performance of the blockage removal agent. While thickened formulas alone can offer benefits It has been found that the combination of thick, viscoelastic solutions of the present invention provide the best performance in removing blockages. All tests were conducted on typical household drains comprising a 3.8 cm diameter pipe with a vertical section, a siphon, a 90 ° bend and a horizontal connection pipe. Foam volume and bleach release were measured 5 minutes after pouring. Examples 1 and 2 show that non-thickened formulas do not generate enough foam in the drainpipe. Examples 3 and 4 show results when at least one formula is viscoelastic. The next examples show the effects of combining a simple thickened formula with a thick, viscoelastic solution. Examples 5 and 7 use a hydrogen peroxide formula that has been thickened with an alternative thickener, eg, an ethoxylated alcohol sulfate. Examples 6 and 7 illustrate the use of other thickening agents, for example C _14-16 amine oxides, a bleach-stable, thickening surfactant commonly known to those skilled in the art. Examples 8-10 illustrate the favorable performance of the preferred embodiments of the present invention. Table V: Surfactant effect on the performance of drain openers Hypochlorite composition Peroxide composition example % active connection additional ingredients (% by weight) % active connection additional ingredients (% by weight) Foam volume in the vertical tube (ml) Bleach delivery (wt%) 1 5.80 ✝ 0.45 ⧧ 0 * 0 2 5.56 # 0.49 $ 203 1.37 3 5.80 (A) 0.51 $ 376 0.15 4 5.66 # 0.50 (E) 188 2 5 5.80 (B) 0.51 (F) 304 0.07 6 5.57 (C) 0.51 (G) 232 1.46 7 5.57 (C) 0.48 (F) 246 0.88 8th 5.43 (D) 0.42 (H) 333 1.06 9 5.80 (A) 0.51 (G) 333 1.21 10 5.80 (B) 0.50 (E) 362 1.13

• * A foam was formed, but immediately peeled off has been.
• (a) = 5.80% sodium hypochlorite, 1.85% sodium hydroxide, 0.0578% Sodium carbonate, 0.1128% sodium silicate, 0.78% betaine, 0.35% SXS.
• (b) = 5.80% sodium hypochlorite, 1.85% sodium hydroxide, 0.0578% Sodium carbonate, 0.1128% sodium silicate, 0.78% betaine, 0.39% SXS.
• (c) = 5.57% sodium hypochlorite, 2.50% sodium hydroxide, 1.10% sodium silicate, 1.00% C ₁₄ amine oxide, 0.18% C ₁₆ amine oxide, 0.58% C ₁₀ fatty acid soap, 0 , 34% C ₁₂ fatty acid soap.
• (d) = 5.43% sodium hypochlorite, 1.85% sodium hydroxide, 0.0578% Sodium carbonate, 0.1128% sodium silicate, 0.77% betaine, 0.35% SXS.
• (e) = 0.50% hydrogen peroxide, 20% sodium chloride, 0.015% sulfuric acid, 0.374% Betaine, 0.262% SXS.
• (f) = 0.51% hydrogen peroxide, 10% sodium chloride, 10% ethoxylated Alcohol sulphate (sodium salt).
• (g) = 0.51% hydrogen peroxide, 20% sodium chloride, 0.015% sulfuric acid, 0.374% Betaine, 0.262% SXS.
• (h) = 0.42% hydrogen peroxide, 20% sodium chloride, 0.015% sulfuric acid, 0.4675% Betaine, 0.3275% SXS.
• ✝ = 5.80% sodium hypochlorite, 1.85% sodium hydroxide, 0.0578% sodium carbonate, 0.1128% sodium silicate.
• ⧧ = 0.50% hydrogen peroxide, 20% sodium chloride, 0.015% Sulfuric acid.
• # = non-thickened, surfactant-containing bleach: 5.47% sodium hypochlorite, 1.82% sodium hydroxide, 0.0569% sodium carbonate, 0.1111% sodium silicate, 0.7681% Betaine, 0.9946% SXS.
• $ = non-thickened, surfactant-containing peroxide: 0.48% hydrogen peroxide, 19.7% sodium chloride, 0.0148% sulfuric acid, 0.368% betaine, 0.9239% SXS.

Other foam properties of interest include foam density and stability. A dense, stable foam will allow for a longer contact time between the active cleaning compounds and the organic materials of the blockage. Foam stability is considered to be the resistance of the foam defined over a force aimed at collapsing or displacing the foam. For the present invention, foam stability is determined by measuring the rate of migration of a standard article through a column of foam. The article used in this experiment is a black phenolic resin screw cap found on typical laboratory sample jars. The closure has a diameter of 5 cm, a margin of 1.2 cm and a weight of 11 g.

The inverted cap is placed on top of the column of foam and the time to complete migration of the foam is measured. A foam displacement rate is calculated by dividing the height of the foam column by the total time required to travel through it. A preferred foam displacement rate is less than about 10 cm / min; more preferably, it is less than about 6 cm / min. The ratio of foam displacement rate to density can also be determined for combinations of thickened gas generants and oxidants. A preferred ratio is about 50: 1 to 1: 1, more preferably about 30: 1 to 10: 1. Table VI lists these foam properties. Table VI: Foam properties Examples Hypochlorite composition (% by weight) Peroxide composition (% by weight) Foam density (g / ml) Foam displacement rate (cm / min) Ratio of foam displacement rate to density 1 (A) (B) 0.21 4.3 20.5 2 (A) (C) 0.31 1.5 4.8 3 (D) (B) 0.41 0.6 1.5 4 (D) (C) 0.33 1.5 4.5

• (a) = 5.78% sodium hypochlorite, 1.85% sodium hydroxide, 0.0578% Sodium carbonate, 0.1128% sodium silicate, 0.7800% betaine, 0.3900% SXS.
• (b) = 0.49% hydrogen peroxide, 20% sodium chloride, 0.015% sulfuric acid, 0.3742% Betaine, 0.2612% SXS.
• (c) = 0.48% hydrogen peroxide, 10% sodium chloride, 10% ethoxylated Alcohol sulphate (sodium salt).
• (d) = 5.57% sodium hypochlorite, 2.50% sodium hydroxide, 1.10% sodium silicate, 1.00% C ₁₄ amine oxide, 0.18% C ₁₆ amine oxide, 0.58% C ₁₀ fatty acid soap, 0 , 34% C ₁₂ fatty acid soap.

Table VII shows the performance of the present invention for constrictions from hair in drains. For this test, 4 g of human hair was mixed with about 2 g of a 10% soap solution and the resulting hair ball was introduced into the drain at the location near the closure bar mechanism. The time to drain off 3.775 liters of water from the sink was recorded as the initial flow rate. Non-thickened and thickened commercially available blockage removers were used in the tests following the instructions on the labels. Tests were also conducted with the non-thickened oxidizer and gas-forming composition along with the compositions of the present invention. Approximately 500 ml of each of the drain port compositions was poured into the drain. The time to drain off 3.775 liters of water from the sink was again measured and recorded as the final flow rate. After completion of each test, the remaining hair was rinsed, dried overnight at 38 ° C and weighed. The present invention solved on average 71.8% of the hair, while non-thickened and thickened commercial products solved on average only 20.1% and 52.9%, respectively. The non-thickened combination of oxidizing and gas-forming liquids averaged only 13.8% of hair. Final effluent flow rates treated with either the thickened commercial product or the present invention are comparable to flow rates found on non-blocked effluent sinks. The unthickened compositions did not result in significantly improved flow rates. Table VII: Performance in Hair Clogging example product % NaOCl initial amount of hair (g) Final amount of hair (g) % dissolved s hair average value for% resolved hair initial flow rate (l / min) final flow rate (l / min) 1 (A) 5.59 4 3.1 22.5 20.1 3.5 7.3 2 (A) 5.66 4 3.3 17.8 2.4 3.7 3 (B) 5.49 4.1 2 51.2 52.9 3 23.5 4 (B) 5.53 4 1.8 54.6 3.6 26.5 5 (C) 5.66 4 3.2 19.8 13.8 3 3.8 6 (C) 5.66 4 3.7 7.8 3.8 3.8 7 (D) 5.57 4 1.1 72.5 71.8 4.1 19.7 8th (D) 5.57 4 1.2 70.3 4.2 18.9 9 (D) 5.57 4 1.1 72.8 4.2 22.7

• (a) = an unthickened, commercially available liquid drain opener
• (b) = a thickened, commercially available liquid drain opener
• (c) = an undiluted combination of oxidizing agent and Gas-forming agents, according to example 2 has been prepared from Table V.
• (d) = a formulation of the present invention prepared according to Example 10 has been prepared from Table V.

Examples 7-9, the are a formulation of the present invention, show a much larger mean at resolved Hair than any of the other examples. It is believed that this improvement due to the increased Contact time occurs, which provides the present invention. It is it can be seen that the present invention also has a better initial Flow rate achieved, and the final Flow rates were better than all except product (b).

A most preferred method of opening drains involves simultaneously pouring a first and a second liquid, as illustrated by Formulation Example 1, from a 2-chamber bottle. A most preferred 2-chamber bottle comprises a juxtaposed chambers of equal capacity and a single dispensing port. Table VIII Improvement in percent Number of outflows tested Number with flow rates <11.4 l / min before treatment Number with flow rates <11.4 l / min after treatment Flow rates <11.4 l / min all drains 38 18 9 105.5 53.9

Table VIII illustrates the specific improvement for slow-flowing effluents, ie, those at flow rates less than about 11.4 liters per minute (l / min), which have been treated with a formulation of the present invention described in Example 10 of Table V has been produced. The test protocol required measuring the time until 4 liters of cold tap water drained from the sink. This was done three times and a mean flow rate was calculated. The present invention was then applied to the effluent. After one hour, the drain was rinsed with hot tap water. Again, the time to drain 4 liters of cold tap water from the sink was measured three times and a mean flow rate determined. A percentage improvement in flow was made for each effluent using the before and after application of the present invention calculated average flow rates. A preferred bottle orientation during pouring results in both liquids leaving the 2-chamber container so that optimum foaming occurs in the drain tube.

Claims (19)

A cleaning composition comprising: (a) a first aqueous liquid comprising an oxidizing agent; and (b) a second aqueous liquid comprising a gas-forming agent; characterized in that at least one of the first and second liquids contains a betaine surfactant and an aryl sulfonate surfactant, wherein the at least one of the first and second liquids containing a betaine surfactant and an aryl sulfonate surfactant is viscoelastic and wherein the first and second aqueous liquids are kept separate prior to formation of a mixture during delivery to a surface to be treated, after which the mixture forms a foam sufficient for cleaning efficiency and stability. A composition according to claim 1, wherein both the first as well as the second liquid thickened, a betaine surfactant and an aryl sulfonate surfactant and are viscoelastic. A composition according to claim 1 or claim 2, the oxidizing agent being alkali metal and alkaline earth metal hypohalogenite salts, Haloamines, haloamines, haloimides, haloamides and mixtures selected from it is; and the gas-forming agent of organic and inorganic peracids organic and inorganic persalts, peracetic acid, monoperoxysulphate, Hydrogen peroxide and mixtures thereof is selected. A composition according to any one of claims 1 to 3, wherein the oxidizing agent in a molar excess over the Gas-forming agent in a range of 10: 1 to 1: 1 is present. A composition according to any one of claims 1 to 4, with an initial of foam at an initial Rate of 10 to 50 ml / s is formed, this initial Phase no longer lasts for about 60 seconds. A composition according to claim 5, wherein a secondary foaming phase at a secondary Rate is formed from 0.01 to 6 ml / s, with the secondary phase lasts for about 500 seconds and ends one of the initial ones Phase succeeds; and a tertiary of foam at a tertiary Rate from 0.001 to -0.2 ml / s is formed, this tertiary phase about 3,600 seconds lasts long and follows an end of the secondary phase. A composition according to any one of claims 1 to 6, the foam having a density of at least about 0.1 g / ml, a volume of at least 1.0 times the volume of liquid and a Half-life is characterized by more than about 30 minutes, wherein the foam is an effluent effective amount of an active Drain cleaning compound contains. A composition according to any one of claims 1 to 7, wherein at least one of the first and second liquid by a rheology of a shear viscosity of 50 to 2,500 cP, a relative elasticity from 1 to 300 s / Pa and a relaxation time of at least about 0.1 seconds. Composition for cleaning, comprising: (A) a first aqueous liquid with a viscosity of at least 100 cP, a relative elasticity of at least about 1 s / Pa and a relaxation time of at least about 0.3 s, which is an oxidizing agent and a surfactant comprises; (b) a second aqueous liquid having a viscosity of at least about 50 cP, a relative elasticity of at least about 1 s / Pa and a relaxation time of at least about 0.1 s, which is a gas-forming Agent and a surfactant; wherein the second aqueous liquid denser than the first aqueous one liquid and the first and second aqueous liquids are arranged in a two-compartment container they are to be added to one during the delivery of a mixture treating surface be kept separate from each other, after which the mixture is a foam forms sufficient for cleaning efficiency and stability is. A cleaning agent according to claim 9, wherein the oxidizing agent further contains an agent which is ei alkaline pH, and the gas-forming agent further contains an agent that sets an acidic pH. Cleaning agent according to claim 9 or claim 10, wherein the oxidizing agent is in a stoichiometric amount over the Gas-forming agent is present, wherein the excess of oxidizing agent as an active, drain-opening Connection functions. Cleaning agent according to one of claims 9 to 11, further containing an active effluent-opening compound. Cleaning agent according to one of claims 9 to 12, wherein both the first and the second liquid a betaine surfactant and an arylsulfonate surfactant. Cleaning agent according to one of claims 9 to 13, further comprising an alkali metal hydroxide, an alkali metal silicate, an alkali metal carbonate and an alkali metal chloride. Cleaning agent according to one of claims 9 to 14, with an initial of foam with an initial one Rate of 10 to 50 ml / s is formed, this initial Phase no longer lasts for about 60 seconds. A detergent according to claim 15, wherein a secondary foaming phase at a secondary Rate is formed from 0.01 to 6 ml / s, with the secondary phase Lasting 20 to 500 seconds and ending one of the initial ones Phase succeeds; and a tertiary of foam with a tertiary Rate from 0.0001 to -0.2 ml / s is formed, the tertiary phase about 3,600 seconds lasts long and follows an end of the secondary phase. Process for the elimination of organic materials caused constrictions in drainpipes, characterized that it includes the following stages: (a) Introduce one A cleaning composition according to claim 1 or claim 9 in a drain; and (b) leaving it through the composition Foam formed for cleaning in contact with the organic material the constrictions to respond. The method of claim 17, wherein an initial of foam with an initial one Rate of 10 to 50 ml / s is formed, the initial Phase no longer lasts for about 60 seconds. The method of claim 18, wherein a secondary foaming phase with a secondary Rate is formed from 0.01 to 6 ml / s, with the secondary phase Lasting 20 to 500 seconds and ending one of the initial ones Phase succeeds; and a tertiary of foam with a tertiary Rate from 0.001 to -0.2 ml / s is formed, the tertiary phase about 3,600 seconds lasts long and follows an end of the secondary phase.