WO1997032966A1 - Compositions detergentes a cristaux liquides - Google Patents

Compositions detergentes a cristaux liquides Download PDF

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Publication number
WO1997032966A1
WO1997032966A1 PCT/US1997/003837 US9703837W WO9732966A1 WO 1997032966 A1 WO1997032966 A1 WO 1997032966A1 US 9703837 W US9703837 W US 9703837W WO 9732966 A1 WO9732966 A1 WO 9732966A1
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WO
WIPO (PCT)
Prior art keywords
composition
water
soil
liquid crystal
oil
Prior art date
Application number
PCT/US1997/003837
Other languages
English (en)
Inventor
Georges Yianakopoulos
Genevieve Blandiaux
Myriam Mondin
Original Assignee
Colgate-Palmolive Company
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Filing date
Publication date
Application filed by Colgate-Palmolive Company filed Critical Colgate-Palmolive Company
Priority to NZ331724A priority Critical patent/NZ331724A/xx
Priority to PL97328708A priority patent/PL187385B1/pl
Priority to EP97915910A priority patent/EP0888447A1/fr
Priority to AU23218/97A priority patent/AU711075B2/en
Publication of WO1997032966A1 publication Critical patent/WO1997032966A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/54—Additives having no specific mesophase characterised by their chemical composition
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • 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
    • C11D1/83—Mixtures of non-ionic with anionic 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
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/0026—Structured liquid compositions, e.g. liquid crystalline phases or network containing non-Newtonian phase
    • 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/12—Water-insoluble compounds
    • C11D3/14—Fillers; Abrasives ; Abrasive compositions; Suspending or absorbing agents not provided for in one single group of C11D3/12; Specific features concerning abrasives, e.g. granulometry or mixtures
    • 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/18—Hydrocarbons
    • 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2068—Ethers
    • 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/382—Vegetable products, e.g. soya meal, wood flour, sawdust
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K2019/528—Surfactants
    • 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
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • 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

  • This invention relates to a liquid crystal detergent composition containing wood particles and an abrasive. More specifically, it is of a liquid detergent composition in a liquid crystal state which when brought into contact with oily soil is superior to other liquid detergent compositions in detergency and in other physical properties.
  • Liquid aqueous synthetic organic detergent compositions have long been employed for human hair shampoos and as dishwashing detergents for hand washing of dishes (as distinguished from automatic dishwashing machine washing of dishes). Liquid detergent compositions have also been employed as hard surface cleaners, as in pine oil liquids, for cleaning floors and walls. More recently they have proven successful as laundry detergents too, apparently because they are convenient to use, are instantly soluble in wash water, and may be employed in "pre-spotting" applications to facilitate removals of soils and stains from laundry upon subsequent washing. Liquid detergent compositions have comprised anionic, cationic and nonionic surface active agents, builders and adjuvants, including, as adjuvants, lipophilic materials which can act as solvents for lipophilic soils and stains. The various liquid aqueous synthetic organic detergent compositions mentioned serve to emulsify lipophilic materials, including oily soils, in aqueous media, such as wash water, by forming micellar dispersions and emulsions.
  • microemuisions are described in British Patent Specification No. 2,190,681 and in U.S. Patents 5,075,026; 5,076,954 and 5,082,584 and 5,108,643, most of which relate to acidic microemuisions useful for cleaning hard surfaced items, such as bathtubs and sinks which microemuisions are especially effective in removing soap scum and lime scale from them.
  • Serial No. is described in British Patent Specification No. 2,190,681 and in U.S. Patents 5,075,026; 5,076,954 and 5,082,584 and 5,108,643, most of which relate to acidic microemuisions useful for cleaning hard surfaced items, such as bathtubs and sinks which microemuisions are especially effective in removing soap scum and lime scale from them.
  • microemuisions may be essentially neutral and such are also taught to be effective for microemulsifying lipophilic soils from substrates.
  • U.S. Patent application Serial No. 7/313,664 there is described a light duty microemulsion liquid detergent composition which is useful for washing dishes and removing greasy deposits from them in both neat and diluted forms.
  • Such compositions include complexes of anionic and cationic detergents as surface active components of the microemuisions.
  • the various microemuisions referred to include a lipophile, which may be a hydrocarbon, a surfactant, which may be an anionic and/or a nonionic detergent(s), a co-surfactant, which may be a poly-lower alkylene glycol lower alkyl ether, e.g., tripropylene glycol monomethyl ether, and water.
  • a lipophile which may be a hydrocarbon
  • a surfactant which may be an anionic and/or a nonionic detergent(s)
  • a co-surfactant which may be a poly-lower alkylene glycol lower alkyl ether, e.g., tripropylene glycol monomethyl ether, and water.
  • the present invention improves them still further and also increases the capacity of the detergent compositions to adhere to surfaces to which they have been applied. Thus, they drop or run substantially less than cleaning compositions of "similar" cleaning power which are in microemulsion or normal liquid detergent form. Also, because they form microemuisions with lipophilic soil or stain material spontaneously, with essentially no requirement for addition of any energy, either thermal or mechanical, they are more effective cleaners at room temperature and at higher and lower temperatures that are normally employed in cleaning operations than are ordinary liquid detergents, and are also more effective than detergent compositions in microemulsion form.
  • the present liquid crystal detergent compositions may be either clear or somewhat cloudy or milky (opalescent) in appearance but both forms thereof are stable on storage and components thereof do not settle out or become ineffective, even on storage at somewhat elevated temperatures for periods as long as six months and up to a year.
  • the presence of the cosurfactant in the liquid crystal detergent compositions helps to make such compositions resist freezing at low temperatures.
  • the present invention relates to a liquid detergent composition containing wood particles which act as an abrasive as well as a surfactant carrier.
  • the compositions are suitable at room temperature or colder, for pre-treating and cleaning materials soiled with lipophilic soil, is in liquid crystal form and comprises synthetic organic surface active agents, a cosurfactant, a solvent for the soil, and water.
  • the invention also relates to processes for treating items and materials soiled with lipophilic soil with compositions of this invention to loosen or remove such soil, by applying to the locus of such soil on such material a soil loosening or removing amount of an invented composition.
  • lipophilic soil is absorbed from the soiled surface into the liquid crystal.
  • all-purpose liquid detergents have become widely accepted for cleaning hard surfaces, e.g., painted woodwork and panels, tiled walls, wash bowls, bathtubs, linoleum or tile floors, washable wall paper, etc.
  • Such all-purpose liquids comprise clear and opaque aqueous mixtures of water-soluble synthetic organic detergents and water-soluble detergent builder salts.
  • use of water-soluble inorganic phosphate builder salts was favored in the prior art all-purpose liquids.
  • such early phosphate-containing compositions are described in U.S. Patent Nos. 2,560,839; 3,234,138; 3,350,319; and British Patent No.
  • U.S. Patent No. 4,017,409 teaches that a mixture of paraffin sulfonate and a reduced concentration of inorganic phosphate builder salt should be employed.
  • such compositions are not completely acceptable from an environmental point of view based upon the phosphate content.
  • another alternative to achieving phosphate-free all-purpose liquids has been to use a major proportion of a mixture of anionic and nonionic detergents with minor amounts of glycol ether solvent and organic amine as shown in U.S. Patent NO. 3,935,130.
  • an o/w microemulsion is a spontaneously forming colloidal dispersion of "oil" phase particles having a particle size in the range of 25 to 800 A in a continuous aqueous phase.
  • microemuisions are transparent to light and are clear and usually highly stable against phase separation.
  • Patent disclosures relating to use of grease-removal solvents in o/w microemuisions include, for example, European Patent Applications EP 0137615 and EP 0137616 - Herbots et al; European Patent Application EP 0160762 - Johnston et al; and U.S. Patent No. 4,561 ,991 - Herbots et al. Each of these patent disclosures also teaches using at least 5% by weight of grease-removal solvent.
  • compositions of this invention described by Herbots et al. require at least 5% of the mixture of grease- removal solvent and magnesium salt and preferably at least 5% of solvent (which may be a mixture of water-immiscible non-polar solvent with a sparingly soluble slightly polar solvent) and at least 0.1 % magnesium salt.
  • Liquid detergent compositions which include terpenes, such as d-iimonene, or other grease-removal solvent, although not disclosed to be in the form of o/w microemuisions, are the subject matter of the following representative patent documents: European Patent Application 0080749; British Patent Specification 1 ,603,047; and U.S. Patent Nos. 4,414,128 and 4,540,505.
  • U.S. Patent No. 4,414,128 broadly discloses an aqueous liquid detergent composition characterized by, by weight:
  • ingredients present in the formulations disclosed in this patent include from 0.05% to 2% by weight of an alkali metal, ammonium or alkanolammonium soap of a C 3-C24 fatty acid; a calcium sequestrant from 0.5% to 13% by weight; non-aqueous solvent, e.g., alcohols and glycol ethers, up to 10% by weight; and hydrotropes, e.g., urea, ethanolamines, salts of lower alkylaryl sulfonates, up to 10% by weight. All of the formulations shown in the Examples of this patent include relatively large amounts of detergent builder salts which are detrimental to surface shine.
  • the present invention provides an improved, liquid crystal detergent composition having improved scouring ability.
  • the compositions have improved interfacial tension which improves cleaning hard surface in the form of a liquid crystal which is suitable for cleaning hard surfaces such as plastic, vitreous and metal surfaces having a shiny finish, oil stained floors, automative engines and other engines.
  • the improved cleaning compositions exhibit good grease soil removal properties due to the improved interfacial tensions and leave the cleaned surfaces shiny without the need of or requiring only minimal additional rinsing or wiping. The latter characteristic is evidenced by little or no visible residues on the unrinsed cleaned surfaces and, accordingly, overcomes one of the disadvantages of prior art products.
  • the invention generally provides a stable, liquid crystal, hard surface cleaning composition especially effective in the removal of oily and greasy oil.
  • the liquid crystal composition includes, on a weight basis: 1 % to 15% of an ethoxylated alkyl ether surfactant;
  • liquid crystal detergent composition does not contain any sulfonate surfactant, and the liquid detergent composition has a storage modulus equal to or higher than one Pascal (1 Newton/sq. m.), more preferably higher than 10 Pascal at a temperature of 20°C to 40°C at a strain of 0.1 % to 5% second as measured on a Carr-Med CS Rheometer and is thermally stable and exist as a clear liquid crystal in the temperature range from 8°C to 43°C, more preferably 4°C to 43°C.
  • the invention generally provides a stable, liquid crystal, hard surface cleaning composition especially effective in the removal of oily and greasy oil.
  • the liquid crystal composition includes, on a weight basis: 1 % to 20% of an ethoxylated alkyl ether sulfate surfactant or sodium lauryl sulfate (SLS);
  • an ethoxylated nonionic surfactant 1 % to 30% of an ethoxylated nonionic surfactant; 1% to 10% of a magnesium salt such as magnesium sulfate heptahydrate or magnesium chloride;
  • liquid crystal detergent composition does not contain any sulfonate surfactant, and the liquid detergent composition has a storage modulus equal to or higher than one Pascal (1 Newton/sq. m.), more preferably higher than 10 Pascal at a temperature of 20°C to 40°C at a strain of 0.1% to 5% second as measured on a Carr-Med CS Rheometer and is thermally stable and exist as a clear liquid crystal in the temperature range from 8°C to 43°C, more preferably 4°C to 43°C.
  • the present invention relates to a stable optically clear liquid crystal detergent composition
  • a stable optically clear liquid crystal detergent composition comprising by weight: 1 % to 15% of an ethoxylated alkyl ether sulfate surfactant, 1 % to 30% of a cosurfactant, 1 % to 30% of an ethoxylated nonionic surfactant, 0.6% to 10% of a water insoluble hydrocarbon, essential oil or a perfume, 0.1 % to 10% of wood particles, and the balance being water, wherein the liquid detergent composition does not contain any sulfonate surfactant, and the liquid detergent composition has a storage modulus equal to or higher than one Pascal (1 Newton/sq.
  • the present invention also relates to a stable liquid crystal detergent composition
  • a stable liquid crystal detergent composition comprising by weight: 1 % to 20% of an ethoxylated alkyl ether sulfate or sodium lauryl sulfate (SLS) surfactant, 1 % to 30% of a cosurfactant, 1 % to 30% of an ethoxylated nonionic surfactant, 0.6% to 10% of a water insoluble hydrocarbon, essential oil or a perfume, 0.1% to 10% of an abrasive, and the balance being water, wherein the liquid detergent composition does not contain any sulfonate surfactant, and the liquid detergent composition has a storage modulus equal to or higher than one Pascal (1 Newton/sq.
  • SLS sodium lauryl sulfate
  • the role of the water insoluble hydrocarbon can be provided by a non-water-soluble perfume.
  • a solubilizers such as alkali metal lower alkyl aryl sulfonate hydrotrope, triethanolamine, urea, etc.
  • perfume dissolution especially at perfume levels of 1 % and higher, since perfumes are generally a mixture of fragrant essential oils and aromatic compounds which are generally not water- soluble.
  • perfume is used in its ordinary sense to refer to ' and include any non-water soluble fragrant substance or mixture of substances including natural (i.e., obtained by extraction of flower, herb, blossom or plant), artificial (i.e., mixture of natural oils or oil constituents) and synthetically produced substance) odoriferous substances.
  • perfumes are complex mixtures of blends of various organic compounds such as alcohols, aldehydes, ethers, aromatic compounds and varying amounts of essential oils (e.g., terpenes) such as from 0% to 80%, usually from 10% to 70% by weight, the essential oils themselves being volatile odoriferous compounds and also serving to dissolve the other components of the perfume.
  • the perfume is not, per se, a solvent for greasy or oily soil, -even though some perfumes may, in fact, contain as much as 80% of terpenes which are known as good grease solvents - the inventive compositions in dilute form have the capacity to solubilize up to 10 times or more of the weight of the perfume of oily and greasy soil, which is removed or loosened from the hard surface by virtue of the action of the anionic and nonionic surfactants, said soil being taken up into the oil phase of the o/w microemulsion.
  • the precise composition of the perfume is of no particular consequence to cleaning performance so long as it meets the criteria of water immiscibility and having a pleasing odor.
  • the perfume, as well as all other ingredients should be cosmetically acceptable, i.e., non-toxic, hypoallergenic, etc.
  • the hydrocarbon such as a perfume is present in the liquid crystal composition in an amount of from 0.6% to 10% by weight, preferably from 0.8% to 8% by weight, especially preferably from 1% to 6% by weight. If the amount of hydrocarbon (perfume) is less than 0.6% by weight it becomes difficult to form the liquid crystal.
  • hydrocarbon perfume
  • the cost is increased without any additional cleaning benefit and, in fact, with some diminishing of cleaning performance insofar as the total amount of greasy or oily soil which can be taken up in the oil phase of the microemulsion will decrease proportionately.
  • the liquid crystal cleaning compositions of the present invention may often include as much as 0.2% to 7% by weight, based on the total composition, of terpene solvents introduced thereunto via the perfume component.
  • the amount of terpene solvent in the cleaning formulation is less than 1.5% by weight, such as up to 0.6% by weight or 0.4% by weight or less, satisfactory grease removal and oil removal capacity is provided by the inventive compositions.
  • an essential oil or a water insoluble organic compound such as a water insoluble hydrocarbon having 6 to 18 carbon such as a paraffin or isoparaffin such as isoparH, isodecane, alpha-pinene, beta-pinene, decanol and terpineol.
  • Suitable essential oils are selected from the group consisting of: Anethole 20/21 natural, Aniseed oil china star, Aniseed oil globe brand, Balsam (Peru), Basil oil (India),
  • Flakes (China), Camphor oil, White, Camphor powder synthetic technical, Cananga oil (Java), Cardamom oil, Cassia oil (China), Cedarwood oil (China) BP, Cinnamon bark oil, Cinnamon leaf oil, Citronella oil, Clove bud oil, Clove leaf, Coriander (Russia), Coumarin 69°C (China), Cyclamen Aldehyde, Diphenyl oxide, Ethyl vanilin, Eucalyptol, Eucalyptus oil, Eucalyptus citriodora, Fennel oil, Geranium oil, Ginger oil, Ginger oleoresin (India), White grapefruit oil, Guaiacwood oil, Gurjun balsam, Heliotropin, Isobornyl acetate, Isolongifolene, Juniper berry oil, L-methyl acetate, Lavender oil, Lemon oil, Lemongrass oil, Lime oil distilled, Litsea Cubeba oil, Longifolene, Menthol crystals, Me
  • the nonionic surfactant is present in amounts of 1% to 30%, preferably 3% to 18% by weight of the liquid crystal composition and provides superior performance in the removal of oily soil and mildness to human skin.
  • the water soluble ethoxylated nonionic surfactants utilized in this invention are commercially well known and include the primary aliphatic alcohol ethoxylates and secondary aliphatic alcohol ethoxylates.
  • the nonionic synthetic organic surfactants generally are the condensation products of an organic aliphatic hydrophobic compound and hydrophilic ethylene oxide groups. The length of the polyethenoxy chain can be adjusted to achieve the desired balance between the hydrophobic and hydrophilic elements.
  • the nonionic surfactant class includes the condensation products of a higher alcohol (e.g., an alkanol containing 8 to 16 carbon atoms in a straight or branched chain configuration) condensed with 4 to 30 moles of ethylene oxide, for example, lauryl or myristyl alcohol condensed with 16 moles of ethylene oxide (EO), tridecanol condensed with 6 to moles of EO, myristyl alcohol condensed with 10 moles of EO per mole of myristyl alcohol, the condensation product of EO with a cut of coconut fatty alcohol containing a mixture of fatty alcohols with alkyl chains varying from 10 to 14 carbon atoms in length and wherein the condensate contains either 6 moles of EO per mole of total alcohol or 9 moles of EO per mole of alcohol and tallow alcohol ethoxylates containing 6 EO to 11 EO per mole of alcohol.
  • a higher alcohol e.g., an alkanol containing
  • Neodol ethoxylates which are higher aliphatic, primary alcohol containing 9-15 carbon atoms, such as Cg-C-i - ⁇ alkanol condensed with 4 to 10 moles of ethylene oxide
  • Neodol 91 -8 or Neodol 91 -5 C12-13 alkanol condensed with 6.5 moles ethylene oxide (Neodol 23-6.5), C12-15 alkanol condensed with 12 moles ethylene oxide
  • ethoxamers (Neodol 25-12), C14-15 alkanol condensed with 13 moles ethylene oxide (Neodol 45- 13), and the like.
  • HLB hydrophobic lipophilic balance
  • ethoxamers with HLB values below 7 contain less than 4 ethyleneoxide groups and tend to be poor emulsifiers and poor detergents.
  • Additional satisfactory water soluble alcohol ethylene oxide condensates are the condensation products of a secondary aliphatic alcohol containing 8 to 18 carbon atoms in a straight or branched chain configuration condensed with 5 to 30 moles of ethylene oxide.
  • Examples of commercially available nonionic detergents of the foregoing type are C-j 1-C-15 secondary alkanol condensed with either 9 EO (Tergitol
  • the ethoxylated alkyl ether sulfate or SLS surfactants which may be used in the detergent of this invention are water soluble such as the triethanolamine sodium, potassium, ammonium and ethanolammonium salts of an C ⁇ -18 ethoxylated alkyl ether sulfate surfactants have the structure: R-(OCHCH2)nOS ⁇ 3 M wherein n is 1 to 5 and R is an alkyl group having 8 to 18 carbon atoms, more preferably 12 to 15 and natural cuts, for example, Ci 2-14; Ci 2-15 and M is an ammonium cation or a metal cation, most preferably sodium.
  • the ethoxylated alkyl ether sulfate is present in the composition at a concentration of 1% to 15% by weight, more preferably 2% to 13% by weight.
  • the ethoxylated alkyl ether sulfate may be made by sulfating the condensation product of ethylene oxide and C8-10 alkanol, and neutralizing the resultant product.
  • the ethoxylated alkyl ether sulfates differ from one another in the number of carbon atoms in the alcohols and in the number of moles of ethylene oxide reacted with one mole of such alcohol.
  • Preferred ethoxylated alkyl ether polyethenoxy sulfates contain 12 to 15 carbon atoms in the alcohols and in the alkyl groups thereof, e.g., sodium myristyl (3 EO) sulfate.
  • Ethoxylated C ⁇ -18 alkylphenyl ether sulfates containing from 2 to 6 moles of ethylene oxide in the molecule are also suitable for use in the invention compositions.
  • These detergents can be prepared by reacting an alkyl phenol with 2 to 6 moles of ethylene oxide and sulfating and neutralizing the resultant ethoxylated alkylphenol.
  • the concentration of the ethoxylated alkyl ether sulfate surfactant is 1 to 8 wt. %.
  • the major class of compounds found to provide highly suitable cosurfactants for the microemulsion over temperature ranges extending from 5°C to 43°C for instance are glycerol, ethylene glycol, water-soluble polyethylene glycols having a molecular weight of 300 to 1000, polypropylene glycol of the formula HO(CH3CHCH2 ⁇ )nH wherein n is a number from 2 to 18, mixtures of polyethylene glycol and polypropyl glycol (Synalox) and mono C1-C-6 alkyl ethers and esters of ethylene glycol and propylene glycol having the structural formulas R(X)nOH and R ⁇ (X)pOH wherein R is C1-C6 alkyl group, Ri is C2-C4 acyl group, X is (OCH2CH2) or (OCH2(CH3)CH) and n is a number from 1 to 4, diethylene glycol, triethylene glycol, an alkyl lactate, wherein the alkyl group has 1 to 6 carbon atom
  • Representative members of the polypropylene glycol include dipropylene glycol and polypropylene glycol having a molecular weight of 200 to 1000, e.g., polypropylene glycol 400.
  • Other satisfactory glycol ethers are ethylene glycol monobutyl ether (butyl cellosolve), diethylene glycol monobutyl ether (butyl carbitol), triethylene glycol monobutyl ether, mono, di, tri propylene glycol monobutyl ether, tetraethylene glycol monobutyl ether, mono, di, tripropylene glycol monomethyl ether, propylene glycol monomethyl ether, ethylene glycol monohexyl ether, diethylene glycol monohexyl ether, propylene glycol tertiary butyl ether, ethylene glycol monoethyl ether, ethylene glycol monomethyl ether, ethylene glycol monopropyl ether, ethylene glycol monopentyl ether, diethylene glycol mono
  • amounts of cosurfactant required to stabilize the liquid crystal compositions will, of course, depend on such factors as the surface tension characteristics of the cosurfactant, the type and amounts of the primary surfactants and perfumes, and the type and amounts of any other additional ingredients which may be present in the composition and which have an influence on the thermodynamic factors enumerated above.
  • amounts of cosurfactant used in the liquid crystal composition is in the range of from 1% to 30%, preferably from 2% to 20%, especially preferably from 3% to 16%, by weight provide stable dilute liquid crystal composition for the above- described levels of primary surfactants and perfume and any other additional ingredients as described below.
  • the low pH liquid crystal formulations In addition to their excellent capacity for cleaning greasy and oily soils, the low pH liquid crystal formulations also exhibit excellent cleaning performance and removal of soap scum and lime scale in neat (undiluted) as well as in diluted usage.
  • the instant liquid crystal detergent compositions can contain wood particles which are abrasive particles designed to improve the scouring power of the instant liquid crystal detergent composition.
  • the surfactant in the composition is also absorbed on the surface of the wood particles. This permits the wood particles to act as a surfactant carrier thereby improving the depositing of the surfactant on the soiled surfactant.
  • the wood particles have a particle diameter of 200 millimicrons to 600 millimicrons, more preferably 400 millmicrons to 500 millimicrons.
  • Preferred wood particles are Picea abies having a particle diameter size of 425 millimicrons.
  • the concentration of the wood particles in the liquid crystal detergent composition is from 0.1 to 10 wt. %, more preferably 0.2 to 6 wt. %.
  • the wood particles can be formed from any time of semi hard or hard wood such as maple, birch, oak, pine and apple as well as from apricot shell, walnut shell and corn cob.
  • the apparent density of wood particles is 0.1 to 0.5 g/l, more preferably 0.3 to 0.6 and have a particle size of 400 millimicrons.
  • the instant liquid crystal compositions contain 0.1 to 2.5 wt. %, more preferably 0.25 to 2.0 wt. % of an abrasive selected from the group consisting of amorphous hydrated silica and polyethylene powder particles and mixtures thereof.
  • the amorphous silica (oral grade) used to enhance the scouring ability of the liquid crystal gel was provided by Zeoffin.
  • the mean particles size of Zeoffin silica is 8 up to 10 mm. Its apparent density is 0.32 to 0.37 g/ml.
  • An amorphous hydrated silica from Crosfield of different particles sizes (9, 15 and 300 mm), and same apparent density can also be used.
  • the polyethylene powder used in the instant invention has a particle size of 200 to 500 microns and a density of 0.91 to 0.99 g/liter, more preferably 0.94 to 0.96.
  • the low pH liquid crystal formulations also exhibit excellent cleaning performance and removal of soap scum and lime scale in neat (undiluted) as well as in diluted usage.
  • the instant composition contains 0.5 to 10 wt. %, more preferably 1 to 8 wt. % of a magnesium salt such as magnesium chloride and/or magnesium sulfate and mixtures thereof.
  • a magnesium salt such as magnesium chloride and/or magnesium sulfate and mixtures thereof.
  • the final essential ingredient in the inventive liquid crystal compositions having improved interfacial tension properties is water.
  • the proportion of water in the liquid crystal detergent composition generally is in the range of 20% to 97%, preferably 70% to 97% by weight.
  • a composition of this invention is in a liquid crystal state when it is of lypotropic structure, is transparent or slightly turbid (opalescent) but no opaque, and has a storage modulus equal to or higher than one Pascal (1 Newton/sq. m.), more preferably higher than 10 Pascal and most preferably higher than 20 Pascal and when measured at a temperature of 20 to 40°C, at a frequency of ten radians per second and at a strain of 0.1 to 5%.
  • the rheological behavior of the compositions of this invention were measured at 25°C by means of a Carri-Med CS Rheometer.
  • a cone and plate are used at a cone angle of 2 degrees: 0 minutes: 0 seconds with a cone diameter of 6.0 cm, measurement system gap of 52.0 micro m and a measurement system inertia of 17.02 micro Nm sec ⁇ 2.
  • liquid crystal compositions of the invention is relatively simple because they tend to form spontaneously with little need for the addition of energy to promote transformation to the liquid crystal state.
  • mixing will normally be undertaken and it has been found desirable first to mix the surfactants and cosurfactant with the water, followed by admixing of the lipophilic component, usually a hydrocarbon (but esters or mixtures of hydrocarbons and esters may also be employed). It is not necessary to employ heat and most mixings are preferably carried out at room temperature (20-25°C).
  • compositions may be applied to such surfaces by pouring onto them, by application with a cloth or sponge, or by various other contacting means but it is preferred to apply them in the form of a spray by spraying them onto the substrate from a hand or finger pressure operated sprayer or squeeze bottle.
  • Such application may be onto hard surfaces, such as dishes, walls or floors, from which lipophilic
  • the invented compositions may be used as detergents and as such may be employed in the same manner in which liquid detergents are normally utilized in dishwashing, floor and wall cleaning and laundering, but it is preferred that they be employed as pre-spotting agents too, in which applications they are found to be extremely useful in loosening the adhesions of lipophilic soils to substrates, thereby promoting much easier cleaning with application of more of the same invented detergent compositions or by applications of different commercial detergent compositions, in liquid, bar or particulate forms.
  • the various advantages of the invention have already been set forth in some detail and will not be repeated here.
  • the invention relates to the important discovery that effective liquid detergent compositions can be made in the liquid crystal state and that because they are in such state they are especially effective in removing lipophilic soils from substrates and also are effective in removing from substrates non-lipophilic materials.
  • Such desirable properties of the liquid crystal detergent compositions of this invention make them ideal for use as pre- spotting agents and detergents for them ideal for use as pre-spotting agents and detergents for removing hard-to-remove soils from substrates in various hard and soft surface cleaning operations.
  • the Cif formula composition was: anionic 2.9% nonionic 1.4% calite 35% soap 0.5%
  • strokes number proto strokes number ref.
  • the index is 0 (cleaning equivalence between prototype and reference). If strokes number proto > strokes number ref. then the index is characterized by a negative value (the more negative the index, the less efficient the prototype).
  • Example 2 The following formulas (wt. %) were made at 25°C by simple mixing.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Cosmetics (AREA)

Abstract

L'invention concerne une composition à cristaux liquides comprenant un tensioactif éthoxylé non ionique, des particules de bois ou une substance abrasive, un tensioactif à base de sulfate d'éther d'alkyle éthoxylé ou un tensioactif à base de sulfate d'alkyle, un co-tensioactif, un composé organique non soluble dans l'eau et sélectionné parmi les parfums, les huiles essentielles et les hydrocabures, ainsi que de l'eau.
PCT/US1997/003837 1996-03-06 1997-03-06 Compositions detergentes a cristaux liquides WO1997032966A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NZ331724A NZ331724A (en) 1996-03-06 1997-03-06 Liquid crystal detergent compositions
PL97328708A PL187385B1 (pl) 1996-03-06 1997-03-06 Ciekłokrystaliczna kompozycja detergentowa i zastosowanie ciekłokrystalicznej kompozycji detergentowej
EP97915910A EP0888447A1 (fr) 1996-03-06 1997-03-06 Compositions detergentes a cristaux liquides
AU23218/97A AU711075B2 (en) 1996-03-06 1997-03-06 Liquid crystal detergent compositions

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US61192496A 1996-03-06 1996-03-06
US61263396A 1996-03-06 1996-03-06
US08/611,924 1996-03-06
US08/612,633 1996-03-06

Publications (1)

Publication Number Publication Date
WO1997032966A1 true WO1997032966A1 (fr) 1997-09-12

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PCT/US1997/003837 WO1997032966A1 (fr) 1996-03-06 1997-03-06 Compositions detergentes a cristaux liquides

Country Status (8)

Country Link
EP (1) EP0888447A1 (fr)
AR (1) AR006130A1 (fr)
AU (1) AU711075B2 (fr)
CA (1) CA2247816A1 (fr)
CO (1) CO4770890A1 (fr)
NZ (1) NZ331724A (fr)
PL (1) PL187385B1 (fr)
WO (1) WO1997032966A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0834548A2 (fr) * 1996-10-02 1998-04-08 Richard Reichmann Agent de nettoyage et procédé pour sa production
WO2000024855A2 (fr) * 1998-10-28 2000-05-04 Colgate-Palmolive Company Compositions de cristaux liquides
WO2001009279A1 (fr) * 1999-07-29 2001-02-08 Reckitt Benckiser N.V. Detergent pour surfaces vitroceramiques

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0125711A1 (fr) * 1983-04-19 1984-11-21 Unilever N.V. Composition de nettoyage à tout usage
EP0335471A2 (fr) * 1988-03-31 1989-10-04 Colgate-Palmolive Company Composition détergente liquide contenant un solvant non polaire
EP0452106A2 (fr) * 1990-04-10 1991-10-16 ALBRIGHT & WILSON UK LIMITED Composition aqueuse d'un tensio-actif
EP0530708A2 (fr) * 1991-08-30 1993-03-10 ALBRIGHT & WILSON UK LIMITED Détergent liquide pour le linge
WO1994005757A1 (fr) * 1992-09-09 1994-03-17 Unilever Plc Ameliorations apportees a des produits de nettoyage de surfaces dures
EP0623670A2 (fr) * 1993-05-07 1994-11-09 ALBRIGHT & WILSON UK LIMITED Compositions tensioactives à base aqueuse

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0125711A1 (fr) * 1983-04-19 1984-11-21 Unilever N.V. Composition de nettoyage à tout usage
EP0335471A2 (fr) * 1988-03-31 1989-10-04 Colgate-Palmolive Company Composition détergente liquide contenant un solvant non polaire
EP0452106A2 (fr) * 1990-04-10 1991-10-16 ALBRIGHT & WILSON UK LIMITED Composition aqueuse d'un tensio-actif
EP0530708A2 (fr) * 1991-08-30 1993-03-10 ALBRIGHT & WILSON UK LIMITED Détergent liquide pour le linge
WO1994005757A1 (fr) * 1992-09-09 1994-03-17 Unilever Plc Ameliorations apportees a des produits de nettoyage de surfaces dures
EP0623670A2 (fr) * 1993-05-07 1994-11-09 ALBRIGHT & WILSON UK LIMITED Compositions tensioactives à base aqueuse

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0834548A2 (fr) * 1996-10-02 1998-04-08 Richard Reichmann Agent de nettoyage et procédé pour sa production
EP0834548A3 (fr) * 1996-10-02 1998-12-30 Richard Reichmann Agent de nettoyage et procédé pour sa production
WO2000024855A2 (fr) * 1998-10-28 2000-05-04 Colgate-Palmolive Company Compositions de cristaux liquides
WO2000024855A3 (fr) * 1998-10-28 2000-07-06 Colgate Palmolive Co Compositions de cristaux liquides
WO2001009279A1 (fr) * 1999-07-29 2001-02-08 Reckitt Benckiser N.V. Detergent pour surfaces vitroceramiques
US6759377B2 (en) 1999-07-29 2004-07-06 Reckitt Benckiser N.V. Detergent for vitroceramic surfaces

Also Published As

Publication number Publication date
CA2247816A1 (fr) 1997-09-12
AR006130A1 (es) 1999-08-11
NZ331724A (en) 1999-08-30
AU2321897A (en) 1997-09-22
AU711075B2 (en) 1999-10-07
PL187385B1 (pl) 2004-06-30
CO4770890A1 (es) 1999-04-30
EP0888447A1 (fr) 1999-01-07
PL328708A1 (en) 1999-02-15

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