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WO2006055713A1 - A multi-surface cleaning device and an aqueous cleaning composition - Google Patents

A multi-surface cleaning device and an aqueous cleaning composition Download PDF

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Publication number
WO2006055713A1
WO2006055713A1 PCT/US2005/041686 US2005041686W WO2006055713A1 WO 2006055713 A1 WO2006055713 A1 WO 2006055713A1 US 2005041686 W US2005041686 W US 2005041686W WO 2006055713 A1 WO2006055713 A1 WO 2006055713A1
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WO
WIPO (PCT)
Prior art keywords
composition
cleaning
cleaning device
amount
present
Prior art date
Application number
PCT/US2005/041686
Other languages
French (fr)
Inventor
Melani Hardt Duran
Ronnie Dale Casey
John O. Hudson
Original Assignee
The Dial Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/989,162 external-priority patent/US20060105937A1/en
Application filed by The Dial Corporation filed Critical The Dial Corporation
Publication of WO2006055713A1 publication Critical patent/WO2006055713A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/835—Mixtures of non-ionic with cationic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/049—Cleaning or scouring pads; Wipes
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic compounds
    • C11D1/62—Quaternary ammonium compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/662—Carbohydrates or derivatives
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols

Definitions

  • the present invention relates generally to a device which is a combination of an invention aqueous multi-surface cleaning solution and an absorbent substrate More particularly, the present invention relates to a cleaning device that contains a liquid composition that is an effective hard surface cleaner, and may also be used for fiber stain removal applications.
  • the cleaner can also be used for fiber stain removal, such as carpet spot cleaning or laundry pretreating.
  • These substrates usually contain cellulose fiber material in some form (e.g. wood pulp, cotton, viscose, rayon), for improved absorption and softness.
  • Highly alkaline cleaning solutions that are effective on certain soils, particularly greasy or oily soils, can degrade the cellulosic content over time.
  • the solutions are formulated in more neutral pH ranges and thus require organic solvents for oily soil removal.
  • a device that combines a liquid cleaning solution with an absorbent substrate that remains robust throughout the cleaning process which enhances the performance of the cleaner in, for example, hard surface cleaning, cleaning of fabrics, and carpet and that does not have an unpleasant aroma is needed.
  • the present invention provides a device which is a combination of an absorbent substrate with a liquid multi-purpose cleaning solution.
  • the substrate preferably contains both synthetic polymers and cellulosic material.
  • the cleaning solution could contain a nonionic surfactant, cationic surfactant, a chelant, sources of alkalinity, buffering agent, qptional ingredients, and is free of preservatives and organic solvent components.
  • the present invention is an effective cleaner for fiber stain removal applications, as well as hard surface cleaning.
  • An exemplary embodiment of the present invention comprises an absorbent material combined with an aqueous cleaning solution that includes a nonionic surfactant present in the amount of from about 0.01 to about 3% by weight of the composition, with optionally a cationic surfactant from about 0 to about 3%, chelating agent present in the amount of from about 0.01 to about 1% by weight of the composition, and a buffering agent present in the amount of from about 0.01 to about 2% by weight of the composition, and the composition is substantially free of preservatives and organic solvents.
  • the preservatives are only present in an amount no more than about 0.1% and the organic solvents are present in an amount of not more than about 0.1%.
  • the liquid cleaning composition that is applied to the absorbent substrate is preferably a clear, isotropic solution having a viscosity generally less than 100 centipoise.
  • the cleaning composition is water based and includes a nonionic surfactant, a cationic surfactant, a chelating agent, a buffering agent, sources of alkalinity, optional ingredients, and is free of preservatives and organic solvents. Water is the principal inert ingredient.
  • the nonionic surfactant component is present in the amount of from about 0.01% to about 3% by weight of the composition. More preferably, the nonionic surfactant component is present in the amount from about 0.05% to about 2% by weight of the composition, and most preferably is present in the amount of from about 0.1% to about 1% by weight of the composition.
  • the nonionic surfactant component comprises ethoxylated alcohols. More preferably, the nonionic surfactant comprises C9-C10 ethoxylated alcohols. Optimally, a narrow range ethoxylate, is used providing fast penetration of fatty soils and improved performance on hard surfaces.
  • Suitable nonionic surfactants include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
  • nonionic detergent compounds are alkyl (C 8 -Ci 8 ) primary or secondary linear or branched alcohols with ethylene oxide, and products made by condensation of ethylene oxide with the reaction products of propylene oxide and ethylenediamine.
  • Other so-called nonionic detergent compounds include long chain tertiary amine oxides, long chain tertiary phosphine oxides and dialkyl sulfoxides.
  • the nonionic material may also comprise an alkyl poly saccharide surfactant having the formula RO(C n H 2n O) x Zy or RCOO(C n H 2n O) X 7 ⁇ wherein Z is a moiety derived from a reducing saccharide containing from 5 to 6 carbon atoms, preferably a glucose, galactose, glucosyl or galactosyl residue or mixtures thereof; R is a hydrophobic group selected from the group consisting of alkyl, alkenyl, alkyl phenol, hydroxy alkyl phenyl or hydroxy alkyl groups or mixtures thereof in which the alky groups contain from about 8 to about 20 carbon atoms.
  • an alkyl poly saccharide surfactant having the formula RO(C n H 2n O) x Zy or RCOO(C n H 2n O) X 7 ⁇ wherein Z is a moiety derived from a reducing saccharide containing from 5 to 6 carbon atoms
  • a preferred nonionic surfactant is the Dehypound ® HSC series from Cognis which is a blend of the alkyl polysaccharide surfactant described above and a Dehypound ® ST series nonionic surfactant, also from Cognis, which includes a defoaming compound.
  • the defoaming compositions are the products of the reaction of epichlorohydrin and compounds having the formula II
  • R 3 is a substituted or unsubstituted, saturated or unsaturated aliphatic moiety having from 4 to 22 carbon atoms; a substituted alkyl or alkenyl group having from 4 to 22 carbon atoms wherein; n is a number from 0 to 50 and m is a number from 0 to 10; and epichlorohydrin wherein the mole ratio of epichlorohydrin to (II) is from about 0.60/1 to about 2/1 and preferably from about 0.80/1 to about 2/1.
  • R 3 can be any substituted or unsubstituted, saturated aliphatic moiety having from 4 to 22 carbon atoms.
  • R 3 can be a linear or branched alkyl group, a linear or branched alkenyl or alkenyl group, a saturated carbocyclic moiety, an unsaturated carbocyclic moiety having one or more multiple bonds, a saturated heterocyclic moiety, an unsaturated heterocyclic moiety having one or more multiple bonds, a substituted linear or branched alkyl group, a substituted linear or branched alkenyl or alkynyl group, a substituted saturated carbocyclic moiety, a substituted unsaturated carbocyclic moiety having one or more multiple bonds.
  • R 3 can also be an arenyl group.
  • Arenyl groups are alkyl-substituted aromatic radicals having a free valence at an alkyl carbon atom such as a benzylic group.
  • the preferred value of R 3 is an alkyl group having from 4 to 22 carbon atoms and most preferably an alkyl group having from 8 to 10 carbon atoms.
  • the degree of ethoxylation is preferably from 2 to about 50 with the most preferred being from about 4 to about 50 while the degree of propoxylation can vary from 0 to 10.
  • the degree of propoxylation will be determined by the desired degree of water solubility or miscribility.
  • the water solubility or miscibility will ultimately be determined by such factors as the number of carbon atoms in R 3 , the relative amounts EO to PO and the effect of PO on the biodegradability of the final defoamer.
  • the defoaming component can be used to control foam generated by any type of surfactant or blend of surfactants, it is especially useful for controlling foam in compositions containing one or more alkyl polyglycoside surfactants.
  • Another embodiment of the invention contains a cationic surfactant, preferably a quaternary ammonium compound.
  • the quaternary ammonium compounds are selected from mono-long-chain, tri-short-chain, tetraalkyl ammonium compounds, di-long-chain, di-short- chain tetraalkyl ammonium compounds, trialkyl, mono-benzyl ammonium compounds, and mixtures thereof.
  • long chain is meant about Ce -30 alkyl.
  • short chain is meant Ci -S alkyl, preferably Ci -3 .
  • an ethoxylated quaternary coco alkylamine is used in the range of 0-3% of the total composition, preferably 0.1 to 2%, and most preferably 0.3 to 1%.
  • a preferred cationic surfactant is the quaternary ammonium compound known as the
  • the preferred surfactant is an ethoxylated quaternary ammonium surfactant, such as the Berol series from Akzo Nobel.
  • the general structure of the preferred surfactant is:
  • R 1 is C 7-14, most preferably Cg -U alkyl, and, can optionally be ethoxylated, propoxylated, butoxylated, or a combination thereof;
  • R 2 and R 3 may be the same or not, and are either H, or Ci -4 alkyl, or CH 2 CH 2 O, CH 2 CH 2 CH 2 O, and preferably, when one of R 2 or R 3 is H, the other substituent must be selected from CM alkyl, or CH 2 CH 2 O, CH 2 CH 2 CH 2 O, or CH 2 CH 2 CH 2 CH 2 O, or a combination thereof; and n may be from 1 to 10, most preferably between 4 and 6.
  • CH 2 CH 2 O, group in the parenthesis which is an ethdxyl group, may also be propoxyl or butoxyl, or a mixture of any of these three groups. Ethoxyl is most preferred.
  • the amount of this first surfactant should be about 0.01 to 15%, most preferably about 0.1 to 5%, by weight.
  • the cationic surfactant in Berol 226 is the most preferred hydrophilic cationic
  • Berol 226 actually is a blend with a nonionic surfactant, as described further below.
  • this hydrophilic cationic surfactant can be used as the sole surfactant herein. However, it is preferred that the hydrophilic cationic surfactant be combined with nonionic surfactant for best results.
  • the Berol 226 product is actually a blend of hydrophilic cationic surfactant and an ethoxylated alcohol.
  • none of the surfactants are capable of protonation or of forming an anionic charge. None of the surfactants contain an uncharged hydrophilic group which is capable of reacting to form a molecule with an anionic charge.
  • a chelating agent is present in the amount of from about 0.01% to about 2% by weight of the composition. More preferably, the chelating agent is present in the amount of from about 0.05% to about 1% by weight of the composition, and, optimally, the chelating agent is present from about 0.1% to about 0.5% by weight of the composition.
  • the chelating agent can be selected from the group consisting of water soluble amino carboxylates, amino phosphates, poly-functionally substituted aromatic chelating agents and mixtures thereof, all as hereinafter defined.
  • the chelating agent is selected from the following amino carboxylates: ethylenediaminetetraacetic acid (EDTA), N- hydroxyethylenediaminetriacetates, nitrilotriacetates (NTA), ethylenediamine tetraproprionates, ethylenediamine-N,N'-diglutameates, 2-hydroxypropylenediamine-N,N'- disuccinates, trieethylenetetraaminehexacetates, diethylenetriaminepentaacetates (DTPA), and ethanoldiglycenes, including their water-soluble salts such as the alkali metal, ammonium, and substituted ammonium salts thereof, and mixtures thereof.
  • the chelating agent comprises EDTA powder. It should be noted, however, that any suitable chelating agent now known or hereinafter known in the art may be used.
  • a buffering agent is present in the amount of about 0.01 to about 2% by weight of the composition. It is yet more preferred that the buffering agent is present in the amount of from about 0.05% to about 1% by weight of the composition, and, optimally, the buffering agent is present in an amount of about 0.1 to about 0.5% by weight of the composition.
  • the buffering agent is selected from borates, carbonates, citrates, amines. Optimally, the buffering agent comprises sodium tetraborate decahydrate.
  • a preferred buffering agent is commercially available as borax from the U. S. Borax
  • Borax preferably, sodium tetraborate decahydrate
  • the preferred embodiment of the invention contains MEA and sodium hydroxide as sources of alkalinity. It should be noted however that there are many such sources of alkalinity known in the art, such as other alkali metal salts of hydroxides, other alcohol amines, alkali metal carbonates, and phosphates.
  • compositions of the invention particularly those compositions used for all purpose cleaning
  • the omission of a preservative or preservative system provides compositions that may be formulated in more basic pH ranges such as in the range of about 8 to about 13, more preferably in the range of about 9 to about 12.5 and most preferably in the range of about 10 to about 12.2.
  • the preservative is present in an amount less than about 0.1%, more preferably less than about 0.01%.
  • Such basic formulations improve cleaning performance and are particularly effective against oily soils.
  • the odor associated with most preservatives is also eliminated and the product may be formulated to enhance a customer's expectations of cleaning and cleanliness.
  • an organic solvent is preferably eliminated from the compositions to an amount of less than about 0.1%, more preferably less than about 0.01%.
  • Organic solvent generally are odiferous and must be either masked or used as a signal to customers of a product's heritage.
  • a buffering component preferably a borate
  • Optional ingredients that the exemplary embodiment of the present invention may comprise, but are not limited to, include, one or more common additives, such as, fragrances, fragrance emulsif ⁇ ers, dyes and pigments (preferably those that do not substantially deposit on hard surfaces). These optional ingredients may be limited in their application to a particular product form.
  • the absorbent material of the invention preferably contains both synthetic polymers and cellulosic material.
  • the material is soft, highly absorbent, allows for excellent distribution and uniform retention of the cleaning solution, and does not degrade during conventional use.
  • Absorbent materials that are suitable for this application include but are not limited to latex binder free, hydroentangled and/or thermally bonded nonwoven substrates.
  • the preferred embodiment of the invention is the combination of the cleaning solution applied to the absorbent substrate packaged within either a pouch, tub, or canister.
  • the wipes would optimally be separate, possibly folded in a "Z" or other configuration known in the art, and stacked.
  • the absorbent substrate would be cut into rolls, with individual wipes separated by perforations. The width of the gaps between the perforations must be carefully controlled so they are strong enough to pull the next wipe through the dispensing orifice yet weak enough to separate after the next wipe is fed through the orifice.
  • the cleaning solution's elevated buffering capacity minimizes the decline in pH which is caused by the reaction of hydroxyl ions with the cellulosic material in the substrate.
  • the decline in the pH would negatively impact both self-preservation and cleaning efficacy.
  • this interaction results in loss of durability during use by the end user.
  • This weakening of the cellulosic fiber may also interfere with the ability of each wipe to pull up the next wipe in the canister embodiment of the present invention.
  • a possible mechanism as to the strength of the preferred embodiment of the invention is that the borax in the liquid cleaning solution used on the absorbent substrate reacts with hydroxyl groups of the cellulosic material. Therefore, cationic bonding with other components of the cleaning solution is prevented and these components remain free to interact with soils for more effective cleaning.
  • the process used to make this product includes the following three steps: compounding of the liquid cleaning solution; conversion of nonwoven substrate; and application of the liquid cleaning solution onto the converted substrate.
  • any of several common liquid blending mix tanks can be used to make the liquid intermediate bulk product. If the product contains fragrance, a premix may be needed to solubilize it. Such premix would include a fragrance emulsifier. It should be noted that any suitable fragrance emulsifier now known or hereinafter known in the art may be used. Ignoring fragrance, the following order of addition is used: water, the surfactant, tetrasodium EDTA, sodium tetraborate decahydrate, monoethanolamine, and sodium hydroxide.
  • Conversion of the nonwoven substrate from large master rolls into small perforated rolls (for canisters) or stacks of individual, folded sheets (for pouches or tubs) can be achieved using various types of converting equipment known in the industry.
  • the application of the liquid cleaning solution onto the converted substrate may either be applied continuously during conversion, or sprayed onto stacks or rolls, either separately or in the package.

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  • Engineering & Computer Science (AREA)
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Abstract

A cleaning device is described that is an absorbent substrate and an aqueous cleaning composition having a nonionic component present in the amount of from about 0.01 to about 5% by weight of the composition, a blend of a cationic surfactant and a nonionic surfactant present in the amount of from 0 to about 3% by weight of the composition, and a buffering agent present in the amount of from about 0.01 to about 5% by weight of the composition.

Description

Title: A MULTI-SURFACE CLEANING DEVICE AND AN AQUEOUS
CLEANING COMPOSITION
Inventor: Melani Hardt Duran, Ronnie Dale Casey and John O. Hudson
Field of Invention
[0001] The present invention relates generally to a device which is a combination of an invention aqueous multi-surface cleaning solution and an absorbent substrate More particularly, the present invention relates to a cleaning device that contains a liquid composition that is an effective hard surface cleaner, and may also be used for fiber stain removal applications. Background of the Invention
[0002] There are a number of cleaning applicators for use with liquid cleaners on the market today. In many cases, the cleaner can also be used for fiber stain removal, such as carpet spot cleaning or laundry pretreating. These substrates usually contain cellulose fiber material in some form (e.g. wood pulp, cotton, viscose, rayon), for improved absorption and softness. Highly alkaline cleaning solutions that are effective on certain soils, particularly greasy or oily soils, can degrade the cellulosic content over time. Additionally, since most commercial solutions contain preservatives to prevent mold formation on such substrates, the solutions are formulated in more neutral pH ranges and thus require organic solvents for oily soil removal. Additionally, many preservatives and organic solvents have distinctive aromas that either must be masked or that are used as signature scents for the product. Products containing signature scents are difficult to improve because there are limited options to modify the components and consumers associate properties of the product, such as its cleaning performance, with the original components.
[0003] There are a number of various cleaning devices that include liquid cleaning solutions known in the art that perform a variety of different functions to aid cleaning. Examples of such cleaning agents are used in dishwashing detergents, laundry detergents, hard surface cleaners and the like.
[0004] A device that combines a liquid cleaning solution with an absorbent substrate that remains robust throughout the cleaning process which enhances the performance of the cleaner in, for example, hard surface cleaning, cleaning of fabrics, and carpet and that does not have an unpleasant aroma is needed. Summary of the Invention
[0005] The present invention provides a device which is a combination of an absorbent substrate with a liquid multi-purpose cleaning solution. The substrate preferably contains both synthetic polymers and cellulosic material. The cleaning solution could contain a nonionic surfactant, cationic surfactant, a chelant, sources of alkalinity, buffering agent, qptional ingredients, and is free of preservatives and organic solvent components. The present invention is an effective cleaner for fiber stain removal applications, as well as hard surface cleaning.
[0006] An exemplary embodiment of the present invention comprises an absorbent material combined with an aqueous cleaning solution that includes a nonionic surfactant present in the amount of from about 0.01 to about 3% by weight of the composition, with optionally a cationic surfactant from about 0 to about 3%, chelating agent present in the amount of from about 0.01 to about 1% by weight of the composition, and a buffering agent present in the amount of from about 0.01 to about 2% by weight of the composition, and the composition is substantially free of preservatives and organic solvents. In a preferred embodiment the preservatives are only present in an amount no more than about 0.1% and the organic solvents are present in an amount of not more than about 0.1%. Detailed Description
[0007] The following description is of an exemplary embodiment of the invention only, and is not intended to limit the scope, applicability, or configuration of the invention in any way. Rather, the following description is intended to provide a convenient illustration for implementing various aspects of the exemplary embodiment of the invention. As will become apparent, changes may be made in the function and arrangement of the elements described in this embodiment without departing from the spirit and scope of the invention.
[0008] That being said, generally, in accordance with the present invention, the liquid cleaning composition that is applied to the absorbent substrate is preferably a clear, isotropic solution having a viscosity generally less than 100 centipoise. For example, in accordance with various aspects of the present invention, the cleaning composition is water based and includes a nonionic surfactant, a cationic surfactant, a chelating agent, a buffering agent, sources of alkalinity, optional ingredients, and is free of preservatives and organic solvents. Water is the principal inert ingredient.
[0009] The nonionic surfactant component is present in the amount of from about 0.01% to about 3% by weight of the composition. More preferably, the nonionic surfactant component is present in the amount from about 0.05% to about 2% by weight of the composition, and most preferably is present in the amount of from about 0.1% to about 1% by weight of the composition.
[0010] In one aspect of the exemplary embodiment of the present invention, the nonionic surfactant component comprises ethoxylated alcohols. More preferably, the nonionic surfactant comprises C9-C10 ethoxylated alcohols. Optimally, a narrow range ethoxylate, is used providing fast penetration of fatty soils and improved performance on hard surfaces. Suitable nonionic surfactants include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide. Specific nonionic detergent compounds are alkyl (C8-Ci8) primary or secondary linear or branched alcohols with ethylene oxide, and products made by condensation of ethylene oxide with the reaction products of propylene oxide and ethylenediamine. Other so-called nonionic detergent compounds include long chain tertiary amine oxides, long chain tertiary phosphine oxides and dialkyl sulfoxides.
[0011] The nonionic material may also comprise an alkyl poly saccharide surfactant having the formula RO(CnH2nO)xZy or RCOO(CnH2n O) X7γ wherein Z is a moiety derived from a reducing saccharide containing from 5 to 6 carbon atoms, preferably a glucose, galactose, glucosyl or galactosyl residue or mixtures thereof; R is a hydrophobic group selected from the group consisting of alkyl, alkenyl, alkyl phenol, hydroxy alkyl phenyl or hydroxy alkyl groups or mixtures thereof in which the alky groups contain from about 8 to about 20 carbon atoms.
[0012] A preferred nonionic surfactant is the Dehypound® HSC series from Cognis which is a blend of the alkyl polysaccharide surfactant described above and a Dehypound® ST series nonionic surfactant, also from Cognis, which includes a defoaming compound.
[0013] The defoaming compositions are the products of the reaction of epichlorohydrin and compounds having the formula II
R3(EO)M(PO)mOH
Wherein R3 is a substituted or unsubstituted, saturated or unsaturated aliphatic moiety having from 4 to 22 carbon atoms; a substituted alkyl or alkenyl group having from 4 to 22 carbon atoms wherein; n is a number from 0 to 50 and m is a number from 0 to 10; and epichlorohydrin wherein the mole ratio of epichlorohydrin to (II) is from about 0.60/1 to about 2/1 and preferably from about 0.80/1 to about 2/1.
[0014] In regard to the alkoxylates of formula II, R3 can be any substituted or unsubstituted, saturated aliphatic moiety having from 4 to 22 carbon atoms. Thus R3 can be a linear or branched alkyl group, a linear or branched alkenyl or alkenyl group, a saturated carbocyclic moiety, an unsaturated carbocyclic moiety having one or more multiple bonds, a saturated heterocyclic moiety, an unsaturated heterocyclic moiety having one or more multiple bonds, a substituted linear or branched alkyl group, a substituted linear or branched alkenyl or alkynyl group, a substituted saturated carbocyclic moiety, a substituted unsaturated carbocyclic moiety having one or more multiple bonds. Examples of the above include but are not limited to an alkyl group having from 4 to 22 carbon atoms, an alkenyl group having from 4 to 22 carbon atoms, an alkynyl group having from 4 to 22 carbon atoms. R3 can also be an arenyl group. Arenyl groups are alkyl-substituted aromatic radicals having a free valence at an alkyl carbon atom such as a benzylic group. The preferred value of R3 is an alkyl group having from 4 to 22 carbon atoms and most preferably an alkyl group having from 8 to 10 carbon atoms. The degree of ethoxylation is preferably from 2 to about 50 with the most preferred being from about 4 to about 50 while the degree of propoxylation can vary from 0 to 10. The degree of propoxylation will be determined by the desired degree of water solubility or miscribility. The water solubility or miscibility will ultimately be determined by such factors as the number of carbon atoms in R3, the relative amounts EO to PO and the effect of PO on the biodegradability of the final defoamer. The water solubility or miscribility of a defoamer according to the invention and the interrelationships between the number of carbon atoms in R3j the relative amounts EO and PO and the biodegradability of the final product will e readily determinable by one of ordinary skill in the art.
[0015] While the defoaming component can be used to control foam generated by any type of surfactant or blend of surfactants, it is especially useful for controlling foam in compositions containing one or more alkyl polyglycoside surfactants.
[0016] Another embodiment of the invention contains a cationic surfactant, preferably a quaternary ammonium compound. The quaternary ammonium compounds are selected from mono-long-chain, tri-short-chain, tetraalkyl ammonium compounds, di-long-chain, di-short- chain tetraalkyl ammonium compounds, trialkyl, mono-benzyl ammonium compounds, and mixtures thereof. By "long" chain is meant about Ce-30 alkyl. By "short" chain is meant Ci-S alkyl, preferably Ci-3. Most preferably, an ethoxylated quaternary coco alkylamine is used in the range of 0-3% of the total composition, preferably 0.1 to 2%, and most preferably 0.3 to 1%.
[0017] A preferred cationic surfactant is the quaternary ammonium compound known as the
Berol® series from Akzo Nobel.
The preferred surfactant is an ethoxylated quaternary ammonium surfactant, such as the Berol series from Akzo Nobel. The general structure of the preferred surfactant is:
Figure imgf000007_0001
Wherein R1 is C7-14, most preferably Cg-U alkyl, and, can optionally be ethoxylated, propoxylated, butoxylated, or a combination thereof; R2 and R3 may be the same or not, and are either H, or Ci-4 alkyl, or CH2CH2O, CH2CH2CH2O, and preferably, when one of R2 or R3 is H, the other substituent must be selected from CM alkyl, or CH2CH2O, CH2CH2CH2O, or CH2CH2CH2CH2O, or a combination thereof; and n may be from 1 to 10, most preferably between 4 and 6. Additionally, the CH2CH2O, group in the parenthesis, which is an ethdxyl group, may also be propoxyl or butoxyl, or a mixture of any of these three groups. Ethoxyl is most preferred. The amount of this first surfactant should be about 0.01 to 15%, most preferably about 0.1 to 5%, by weight.
[0018] The cationic surfactant in Berol 226 is the most preferred hydrophilic cationic
(ethoxylated quaternary ammonium) surfactant. Berol 226 actually is a blend with a nonionic surfactant, as described further below. [0019] Although described as the first surfactant, in fact, this hydrophilic cationic surfactant can be used as the sole surfactant herein. However, it is preferred that the hydrophilic cationic surfactant be combined with nonionic surfactant for best results. In fact, the Berol 226 product is actually a blend of hydrophilic cationic surfactant and an ethoxylated alcohol.
[0020] Most preferred is a blend of a hydrophilic cationic surfactant and ethoxylated alcohol supplied as Berol 226 SA® from Akzo Nobel Surface Chemistry LLC, Chicago, IL.
[0021] In the preferred embodiments none of the surfactants are capable of protonation or of forming an anionic charge. None of the surfactants contain an uncharged hydrophilic group which is capable of reacting to form a molecule with an anionic charge.
[0022] In the preferred embodiment of the present invention, a chelating agent is present in the amount of from about 0.01% to about 2% by weight of the composition. More preferably, the chelating agent is present in the amount of from about 0.05% to about 1% by weight of the composition, and, optimally, the chelating agent is present from about 0.1% to about 0.5% by weight of the composition.
[0023] In the exemplary embodiment of the present invention, the chelating agent can be selected from the group consisting of water soluble amino carboxylates, amino phosphates, poly-functionally substituted aromatic chelating agents and mixtures thereof, all as hereinafter defined. In yet another preferred embodiment of the present invention, the chelating agent is selected from the following amino carboxylates: ethylenediaminetetraacetic acid (EDTA), N- hydroxyethylenediaminetriacetates, nitrilotriacetates (NTA), ethylenediamine tetraproprionates, ethylenediamine-N,N'-diglutameates, 2-hydroxypropylenediamine-N,N'- disuccinates, trieethylenetetraaminehexacetates, diethylenetriaminepentaacetates (DTPA), and ethanoldiglycenes, including their water-soluble salts such as the alkali metal, ammonium, and substituted ammonium salts thereof, and mixtures thereof. Optimally the chelating agent comprises EDTA powder. It should be noted, however, that any suitable chelating agent now known or hereinafter known in the art may be used.
[0024] In the preferred embodiment of the present invention, a buffering agent is present in the amount of about 0.01 to about 2% by weight of the composition. It is yet more preferred that the buffering agent is present in the amount of from about 0.05% to about 1% by weight of the composition, and, optimally, the buffering agent is present in an amount of about 0.1 to about 0.5% by weight of the composition. In the exemplary embodiment of the present invention, the buffering agent is selected from borates, carbonates, citrates, amines. Optimally, the buffering agent comprises sodium tetraborate decahydrate.
[0025] A preferred buffering agent is commercially available as borax from the U. S. Borax
Co. of California. Borax, preferably, sodium tetraborate decahydrate, has the ability to buffer the cleaning solution to an effective pH range which promotes soil removal on fibers and on hard surfaces. In addition to its buffering capability, it functions as a deodorizer of body soils. The preferred embodiment of the invention contains MEA and sodium hydroxide as sources of alkalinity. It should be noted however that there are many such sources of alkalinity known in the art, such as other alkali metal salts of hydroxides, other alcohol amines, alkali metal carbonates, and phosphates.
[0026] In addition, in the liquid compositions of the invention, particularly those compositions used for all purpose cleaning, the omission of a preservative or preservative system provides compositions that may be formulated in more basic pH ranges such as in the range of about 8 to about 13, more preferably in the range of about 9 to about 12.5 and most preferably in the range of about 10 to about 12.2. In a preferred embodiment the preservative is present in an amount less than about 0.1%, more preferably less than about 0.01%. Such basic formulations improve cleaning performance and are particularly effective against oily soils. The odor associated with most preservatives is also eliminated and the product may be formulated to enhance a customer's expectations of cleaning and cleanliness.
[0027] In the exemplary composition of the invention, an organic solvent, is preferably eliminated from the compositions to an amount of less than about 0.1%, more preferably less than about 0.01%. Organic solvent generally are odiferous and must be either masked or used as a signal to customers of a product's heritage. The presence of a buffering component, preferably a borate, in a basic cleaning composition eliminates the requirement of a organic solvent and thus provides a composition that is more neutral in smell and appearance.
[0028] Optional ingredients that the exemplary embodiment of the present invention may comprise, but are not limited to, include, one or more common additives, such as, fragrances, fragrance emulsifϊers, dyes and pigments (preferably those that do not substantially deposit on hard surfaces). These optional ingredients may be limited in their application to a particular product form.
[0029] The absorbent material of the invention preferably contains both synthetic polymers and cellulosic material. In an exemplary embodiment, the material is soft, highly absorbent, allows for excellent distribution and uniform retention of the cleaning solution, and does not degrade during conventional use. Absorbent materials that are suitable for this application include but are not limited to latex binder free, hydroentangled and/or thermally bonded nonwoven substrates.
[0030] The following are non-limiting examples of exemplary embodiments of the present invention. The preferred embodiment of the invention is the combination of the cleaning solution applied to the absorbent substrate packaged within either a pouch, tub, or canister. In the case of the pouch and tub embodiment, the wipes would optimally be separate, possibly folded in a "Z" or other configuration known in the art, and stacked. In the case of the canister embodiment however, the absorbent substrate would be cut into rolls, with individual wipes separated by perforations. The width of the gaps between the perforations must be carefully controlled so they are strong enough to pull the next wipe through the dispensing orifice yet weak enough to separate after the next wipe is fed through the orifice.
[0031] The cleaning solution's elevated buffering capacity minimizes the decline in pH which is caused by the reaction of hydroxyl ions with the cellulosic material in the substrate. The decline in the pH would negatively impact both self-preservation and cleaning efficacy. In addition, this interaction results in loss of durability during use by the end user. This weakening of the cellulosic fiber may also interfere with the ability of each wipe to pull up the next wipe in the canister embodiment of the present invention.
[0032] A possible mechanism as to the strength of the preferred embodiment of the invention is that the borax in the liquid cleaning solution used on the absorbent substrate reacts with hydroxyl groups of the cellulosic material. Therefore, cationic bonding with other components of the cleaning solution is prevented and these components remain free to interact with soils for more effective cleaning.
[0033] The following is a non-limiting example of an exemplary embodiment of the present invention:
Figure imgf000011_0001
'A blend of C8-Io Alkyl Polyglucoside, C12-I4 Alkyl Polyglucoside, and a proprietary nonionic surfactant from Cognis.
[0034] The following is another non-limiting example of an exemplary embodiment of the present invention:
Figure imgf000012_0001
^Proprietary blend of a quaternary ammonium compound and an ethoxylated alcohol, from Akzo Nobel.
[0035] The process used to make this product includes the following three steps: compounding of the liquid cleaning solution; conversion of nonwoven substrate; and application of the liquid cleaning solution onto the converted substrate.
[0036] Although, following process description is written for batchwise compounding, it may be readily modified for continuous processing. Any of several common liquid blending mix tanks can be used to make the liquid intermediate bulk product. If the product contains fragrance, a premix may be needed to solubilize it. Such premix would include a fragrance emulsifier. It should be noted that any suitable fragrance emulsifier now known or hereinafter known in the art may be used. Ignoring fragrance, the following order of addition is used: water, the surfactant, tetrasodium EDTA, sodium tetraborate decahydrate, monoethanolamine, and sodium hydroxide.
[0037] Conversion of the nonwoven substrate from large master rolls into small perforated rolls (for canisters) or stacks of individual, folded sheets (for pouches or tubs) can be achieved using various types of converting equipment known in the industry.
[0038] The application of the liquid cleaning solution onto the converted substrate may either be applied continuously during conversion, or sprayed onto stacks or rolls, either separately or in the package.
[0039] It should be understood that the foregoing description of the present invention is of the preferred embodiment of the present invention, and the description is not intended to limit the scope of the invention. The examples of the preferred embodiment are for illustrative purposes only, and the present invention is not limited to the specific examples and compositions set forth herein. Various modifications may be made in light thereof as will be suggested to persons skilled in the art without departing from the scope of the invention as expressed in the claims.

Claims

ClaimsWhat is claimed is:
1. A cleaning device comprising: a) an aqueous cleaning composition comprising, a nonionic surfactant component present in the amount of from about 0.01 to about 5% by weight of the composition; a blend of a cationic surfactant and a nonionic surfactant present in the amount of from 0 to about 3% by weight of the composition; and a buffering agent present in the amount of from about 0.01 to about 5% by weight of the composition; and b) an absorbent substrate.
2. The cleaning device of claim 1, wherein the substrate comprises a nonwoven fabric.
3. The cleaning device of claim 2, wherein the nonwoven fabric is comprised of an organic fiber.
4. The cleaning device of claim 1, wherein the nonionic surfactant of the cleaning composition comprises C9-11 ethoxylated alcohols.
5. The cleaning device of claim 1, wherein the cationic surfactant of the composition comprises a quaternary ammonium compound.
6. The cleaning device of claim 1, wherein the blend is Berol 226 SA®.
7. The cleaning device of claim 1, wherein the nonionic surfactant is a blend of an alkyl poly saccharide surfactant having a chain length of about 8 to about 20 carbons.
8. The cleaning device of claim 7, wherein the nonionic surfactant is Dehypound HSC 5515.
9. The cleaning device of claim 1, wherein the buffering agent of the cleaning composition comprises sodium borate.
10. The cleaning device of claim 1, wherein the cleaning composition is substantially free of an added chemical preservative.
11. The cleaning device of claim 1, wherein the cleaning composition is substantially free of an organic solvent.
12. The cleaning device of claim 1, wherein the cleaning composition further comprises optional additives selected from the group consisting of thickeners, perfume, dyes, pigments, foam stabilizers, and emulsifiers.
13. The cleaning device of claim 1, wherein the cleaning composition comprises a pH range from about 8 to 13.
14. The cleaning device of claim 13, wherein the pH range is from about 10 to about 12.
15. A cleaning device comprising: a) an aqueous cleaning composition comprising, a nonionic surfactant component present in the amount of from about 0.01 to about 5% by weight of the composition; a blend of a cationic surfactant and a nonionic surfactant present in the amount of from about 0.1 to about 2% by weight of the composition; and a buffering agent present in the amount of from about 0.01 to about 5% by weight of the composition; and b) an absorbent substrate.
16. An aqueous cleaning composition comprising: a nonionic component present in the amount of from about 0.01 to about 5% by weight of the composition, a cationic surfactant present in the amount of from 0 to about 3% by weight of the composition; a buffering agent present in the amount of from about 0.01 to about 5% by weight of the composition; a fragrance present in the amount of from 0 to about 2% by weight of the composition; and a fragrance emulsifϊer present in the amount of from 0 to about 3%.
17. The cleaning composition of claim 15, wherein the composition is substantially free of an organic solvent.
18. The cleaning composition of claim 15, wherein the nonionic surfactant of the cleaning composition comprises C9- 11 ethoxylated alcohols.
19. The cleaning composition of claim 15, wherein the cationic surfactant of the composition comprises a quaternary ammonium compound.
20. The cleaning composition of claim 15, wherein the buffering agent of the cleaning composition comprises sodium borate.
PCT/US2005/041686 2004-11-15 2005-11-15 A multi-surface cleaning device and an aqueous cleaning composition WO2006055713A1 (en)

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US7596974B2 (en) 2006-06-19 2009-10-06 S.C. Johnson & Son, Inc. Instant stain removing device, formulation and absorbent means
US8222194B2 (en) 2008-05-09 2012-07-17 Rhodia Operations Cleaning compositions incorporating green solvents and methods for use
US8440598B2 (en) 2008-05-09 2013-05-14 Rhodia Operations Ink cleaning composition and methods for use
US8460477B2 (en) 2010-08-23 2013-06-11 Ecolab Usa Inc. Ethoxylated alcohol and monoethoxylated quaternary amines for enhanced food soil removal
US8628626B2 (en) 2010-12-10 2014-01-14 Rhodia Operations Dibasic esters utilized as terpene co-solvents, substitutes and/or carriers in tar sand/bitumen/asphaltene cleaning applications
US8722610B2 (en) 2009-10-19 2014-05-13 Rhodia Operations Auto-emulsifying cleaning systems and methods for use
US8883694B2 (en) 2012-04-17 2014-11-11 Rhodia Operations Polysaccharide slurries with environmentally friendly activator solvents
CN111118515A (en) * 2018-10-31 2020-05-08 曾凡强 Environment-friendly universal metal cleaning agent and preparation method thereof

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7596974B2 (en) 2006-06-19 2009-10-06 S.C. Johnson & Son, Inc. Instant stain removing device, formulation and absorbent means
US7743443B2 (en) 2006-06-19 2010-06-29 S.C. Johnson & Son, Inc. Liquid applicator and absorbent scrubbing means
US7832041B2 (en) 2006-06-19 2010-11-16 S.C. Johnson & Son, Inc. Instant stain removing device, formulation and absorbent means
US8222194B2 (en) 2008-05-09 2012-07-17 Rhodia Operations Cleaning compositions incorporating green solvents and methods for use
US8440598B2 (en) 2008-05-09 2013-05-14 Rhodia Operations Ink cleaning composition and methods for use
US8722610B2 (en) 2009-10-19 2014-05-13 Rhodia Operations Auto-emulsifying cleaning systems and methods for use
US8460477B2 (en) 2010-08-23 2013-06-11 Ecolab Usa Inc. Ethoxylated alcohol and monoethoxylated quaternary amines for enhanced food soil removal
US8628626B2 (en) 2010-12-10 2014-01-14 Rhodia Operations Dibasic esters utilized as terpene co-solvents, substitutes and/or carriers in tar sand/bitumen/asphaltene cleaning applications
US8883694B2 (en) 2012-04-17 2014-11-11 Rhodia Operations Polysaccharide slurries with environmentally friendly activator solvents
CN111118515A (en) * 2018-10-31 2020-05-08 曾凡强 Environment-friendly universal metal cleaning agent and preparation method thereof

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