EP1397479A1 - Systeme de nettoyage renfermant une composition de nettoyage liquide placee dans un contenant soluble dans l'eau - Google Patents

Systeme de nettoyage renfermant une composition de nettoyage liquide placee dans un contenant soluble dans l'eau

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Publication number
EP1397479A1
EP1397479A1 EP02739802A EP02739802A EP1397479A1 EP 1397479 A1 EP1397479 A1 EP 1397479A1 EP 02739802 A EP02739802 A EP 02739802A EP 02739802 A EP02739802 A EP 02739802A EP 1397479 A1 EP1397479 A1 EP 1397479A1
Authority
EP
European Patent Office
Prior art keywords
water soluble
carbon atoms
oil
water insoluble
container
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP02739802A
Other languages
German (de)
English (en)
Inventor
Myriam Mondin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Colgate Palmolive Co
Original Assignee
Colgate Palmolive Co
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 US09/905,240 external-priority patent/US6326345B1/en
Priority claimed from US10/008,115 external-priority patent/US6444632B1/en
Application filed by Colgate Palmolive Co filed Critical Colgate Palmolive Co
Publication of EP1397479A1 publication Critical patent/EP1397479A1/fr
Withdrawn legal-status Critical Current

Links

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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
    • C11D3/3734—Cyclic silicones
    • 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
    • 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
    • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions
    • C11D17/043—Liquid or thixotropic (gel) compositions
    • 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
    • C11D3/2075—Carboxylic acids-salts thereof
    • C11D3/2079—Monocarboxylic acids-salts thereof
    • 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
    • C11D3/2093—Esters; Carbonates
    • 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
    • C11D3/50—Perfumes

Definitions

  • This invention relates to a water soluble sachet containing a concentrate of a cleaning composition having excellent foam collapse properties and excellent grease cutting properties designed in particular for cleaning hard surfaces and which is effective in removing grease soil and/or bath soil and in leaving unrinsed surfaces with a shiny appearance.
  • 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. For example, such early phosphate-containing compositions are described in
  • 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.
  • microemulsions 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 microemulsions 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-limonene, or other grease-removal solvent, although not disclosed to be in the form of o/w microemulsions, are the subject matter of the following representative patent documents: European Patent Application 0080749; British Patent Specification
  • U.S. Patent No. 4,414,128 broadly discloses an aqueous liquid detergent composition characterized by, by weight: (a) from 1 % to 20% of a synthetic anionic, nonionic, amphoteric or zwitterionic surfactant or mixture thereof;
  • (b) from 0.5% to 10% of a mono- or sesquiterpene or mixture thereof, at a weight ratio of (a):(b) being in the range of 5:1 to 1 :3; and (c ) from 0.5% 10% of a polar solvent having a solubility in water at 15°C in the range of from 0.2% to 10%.
  • Other 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
  • non-aqueous solvent e.g., alcohols and glycol ethers, up to 10% by weight
  • 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.
  • U.S. Patent 6,037,319 teaches a water soluble sachet containing a cleaning composition containing an alcohol and hexylene glycol.
  • U.S. Patent 5,783,541 teaches a dishwashing composition disposed in a water soluble film, wherein the water soluble film is coated with a water dissolvable glue.
  • the present invention provides a cleaning system comprising a water soluble sachet containing a concentrate of a liquid cleaning composition having excellent foam collapse properties and excellent grease cutting property which, when diluted in a bucket, is suitable for cleaning hard surfaces such as plastic, vitreous and metal surfaces having a shiny finish, oil stained floors, automotive engines and other engines.
  • the improved cleaning compositions with excellent foam collapse properties and excellent grease cutting property exhibit good grease soil removal properties due to the improved interfacial tensions, when used diluted 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, water soluble sachet made of a water soluble thermoplastic wherein the sachet contains a liquid cleaning composition which comprises approximately by weight:
  • a nonionic surfactant selected from the group consisting of an ethoxylated/propoxylated nonionic surfactant and an ethoxylated nonionic surfactant and mixtures thereof; 0 to 30%, more preferably 1 % to 26% of a short chain amphiphile; and
  • the present invention relates to a water soluble sachet containing a unit dose of a liquid cleaning composition wherein the water soluble sachet is formed from a single layer of film water soluble thermo plastic such as a polyvinyl alcohol, wherein the inner layer of the film is in contact with the liquid cleaning composition and the external layer of the film does not have a water soluble glue disposed thereon.
  • a water soluble sachet containing a unit dose of a liquid cleaning composition
  • the water soluble sachet is formed from a single layer of film water soluble thermo plastic such as a polyvinyl alcohol, wherein the inner layer of the film is in contact with the liquid cleaning composition and the external layer of the film does not have a water soluble glue disposed thereon.
  • the liquid cleaning composition contained in the water soluble sachet comprises approximately by weight: (a) 1 % to 13%, more preferably 2% to 12% of an organic compound selected from the group consisting of a fatty acid, a water insoluble organic ester and a silicone fluid and mixtures thereof;
  • composition 0 to 30%, more preferably 1% to 26% of a short chain amphiphiles, wherein the composition does not contain an anionic sulfate surfactant, an anionic sulfonate surfactant, hexylene glycol or an amine oxide surfactant.
  • 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 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 water insoluble saturated or unsaturated organic compounds contain 4 to 20 carbon atoms and up to 4 different or identical functional groups and is used at a concentration of about 1.0 wt. % to about 8 wt. %, more preferably about 2.0 wt. % to about 7 wt. %.
  • water insoluble saturated or unsaturated organic compound examples include (but are not limited to) water insoluble hydrocarbons containing 0 to 4 different or identical functional groups, water insoluble aromatic hydrocarbons containing 0 to 4 different or identical functional groups, water insoluble heterocyclic compounds containing 0 to 4 different or identical functional groups, water insoluble ethers containing 0 to 3 different or identical functional groups, water insoluble alcohols containing 0 to 3 different or identical functional groups, water insoluble amines containing 0 to 3 different or identical functional groups, water insoluble carboxylic acids containing 0 to 3 different or identical functional groups, water insoluble amides containing 0 to 3 different or identical functional groups, water insoluble nitriles containing 0 to 3 different or identical functional group, water insoluble aldehydes containing 0 to 3 different or identical functional groups, water insoluble ketones containing 0 to 3 different or identical functional groups, water insoluble phenols containing 0 to 3 different or identical functional groups, water insoluble nitro compounds containing 0 tO
  • Typical heterocyclic compounds are 2,5-dimethylhydrofuran,2-methyl-1 ,3- dioxolane, 2-ethyl 2-methyl 1 ,3 dioxolane, 3-ethyl 4-propyl tetrahydropyran, 3- morpholino-1 ,2-propanediol and N-isopropyl morpholine
  • a typical amine is alpha- methyl benzyldimethylamine.
  • Typical halogens are 4-bromotoluene, butyl chloroform and methyl perchloropropane.
  • Typical hydrocarbons are 1 ,3-dimethylcyclohexane, cyclohexyl-ldecane, methyl-3 cyclohexyl-9 nonane, methyl-3 cyclohexyl-6 nonane, dimethyl cycloheptane, trimethyl cyclopentane, ethyl-2 isopropyl-4 cyclohexane.
  • Typical aromatic hydrocarbons are bromotoluene, diethyl benzene, cyclohexyl bromoxylene, ethyl-3 pentyl-4 toluene, tetrahydronaphthalene, nitrobenzene and methyl naphthalene.
  • Typical water insoluble esters are benzyl acetate, dicyclopentadienylacetate, isononyl acetate, isobornyl acetate and isobutyl isobutyrate.
  • Typical water insoluble ethers are di(alphamethyl benzyl) ether and diphenyl ether.
  • Typical alcohols are phenoxyethanol and 3-morpholino-1 ,2-propanediol.
  • Typical water insoluble nitro derivatives are nitro butane and nitrobenzene.
  • 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), Black pepper oil, Black pepper oleoresin 40/20, Bois de Rose (Brazil) FOB, Borneol 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 bals
  • the at least one nonionic surfactant used in the instant cleaning composition is selected from the group of an aliphatic ethoxylated nonionic surfactant and an aliphatic ethoxylated/propoxylated nonionic surfactant and mixtures thereof.
  • the water soluble aliphatic ethoxylated nonionic surfactants utilized in this invention are commercially well known and include the primary aliphatic alcohol ethoxylates and secondary aliphatic alcohol ethoxylates.
  • 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 about 8 to 16 carbon atoms in a straight or branched chain configuration) condensed with about 4 to 20 moles of ethylene oxide, for example, lauryl or myristyl alcohol condensed with about 16 moles of ethylene oxide (EO), tridecanol condensed with about 6 to 15 moles of EO, myristyl alcohol condensed with about 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 about 14 carbon atoms in length and wherein the condensate contains either about 6 moles of EO per mole of total alcohol or about 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
  • Neodol ethoxylates which are higher aliphatic, primary alcohol containing about 9- 15 carbon atoms, such as C9-C11 alkanol condensed with 4 to 10 moles of ethylene oxide (Neodol 91-8 or Neodol 91-5), C-
  • Neodol ethoxylates such as C9-C11 alkanol condensed with 4 to 10 moles of ethylene oxide (Neodol 91-8 or Neodol 91-5), C-
  • Such ethoxamers have an HLB (hydrophobic lipophilic balance) value of about 8 to 15 and give good O/W emulsification, whereas ethoxamers with HLB values below 7 contain less than 4 ethyleneoxide groups and tend to be poor emulsifiers and poor detergents.
  • HLB hydrophobic lipophilic balance
  • 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 C11-C15 secondary alkanol condensed with either 9 EO (Tergitol
  • water soluble nonionic surfactants which can be utilized in this invention are an aliphatic ethoxylated/propoxylated nonionic surfactants which are depicted by the formula: R— G— (CH2CH2 ⁇ ) ⁇ (CH2CH2CH2 ⁇ )y-H or
  • R is a branched chain alkyl group having about 10 to about 16 carbon atoms, preferably an isotridecyl group and x and y are independently numbered from 1 to 20.
  • a preferred ethoxylated/propoxylated nonionic surfactant is Plurafac ® 300 manufactured by BASF.
  • a C6-C 4 alkylene carbonate can be used optionally in the instant composition at a concentration of 0 to 10 wt. %, more preferably 1.0 wt. % to 5 wt. % and is depicted by the structure:
  • R1 is a Cn alkyl group
  • R2 is H or is a Cm alkyl group, with n+m being a number from 4 to 12, more preferably from 6 to 10, such as 1-octene carbonate or 1- dodecene carbonate.
  • the C6-C14 alkylene carbonate is prepared by the reaction of alkane alpha-diol with phosgene as depicted by the following:
  • R1 is a Cn alkyl group, with n being a number from 4 to 12 and R2 is a C m alkyl group, with n+m being a number from 4 to 12.
  • the alkane alpha-diols are prepared from the epoxidation of an internal or an alpha-olefin and the subsequent hydrolysis of the epoxide.
  • the C6-C14 alkylene carbonate can also be prepared by a another synthesis route by the reaction of molecular oxygen 0 2 on the said internal or alpha-olefin to form the epoxide as intermediate product, followed by the direct reaction of carbon dioxide C0 2 on the epoxide in appropriate conditions, as depicted by the following:
  • the C6-C14 alkylene carbonates are nitrogen-free amphiphiles having a high dipole moment.
  • the short chain amphiphile which is optionally used in the instant cleaning composition is not a surfactant and is characterized by the formula:
  • R10 (CH2CH2 ⁇ )nH wherein Ri is a straight or branched chain alkyl group having 2 to 6 carbon atoms and n is a number from 2 to 8, more preferably 3 to 6 and the amphiphile has an HLB of about 6 to about 9, preferably about 7 to about 8.
  • Preferred amphiphiles have a C6 alkyl group and 2 to 5 EO such as hexanol 5EO.
  • Ri or R2 are a straight or branched chain alkyl group having 2 to 6 carbon atoms and x or w is a number from 2 to 5, more preferably 2 to 4 and y or z is a number from 1 to 4, more preferably 1 to 3 and the amphiphile has an HLB of about 6 to about 9, preferably about 7 to about 8.
  • Preferred amphiphiles have a C6 alkyl group and 2 to
  • the instant cleaning composition can contain a fatty acid.
  • fatty acids which can be used as such or in the form of soap, mention can be made of distilled coconut oil fatty acids, "mixed vegetable” type fatty acids (e.g. high percent of saturated, mono-and/or polyunsaturated C ⁇ chains); oleic acid, stearic acid, palmitic acid, eiocosanoic acid, and the like, generally those fatty acids having from 8 to 22 carbon atoms being acceptable.
  • the silicone fluids are selected from the group consisting of decamethyl cyclopentasiloxane, dodecanmethyl cyclohexasiloxane, and a mixture of dodecamethyl cyclohexasiloxane and decamethyl cyclopenta silioxane in a weight ratio of 9:1 to 19:1 , more preferably 11 :1 to 17:1 and a weight ratio of 8:1 to 1 :1 , more preferably 2:1 to 1.5:1.
  • These chemicals are manufactured by Dow Chemical and sold as Silicone Fluids 245, 246 and 345.
  • decamethyl cyclopentasiloxane is:
  • the water insoluble organic ester is either an organic mono ester having 6 to 24 carbon atoms or an organic diester having 6 to 24 carbon atoms.
  • the liquid cleaning composition of this invention may, if desired, also contain other components either to provide additional effect or to make the product more attractive to the consumer.
  • Colors or dyes in amounts up to 0.5% by weight; bactericides in amounts up to 1 % by weight; preservatives or antioxidizing agents, such as formalin, 5-bromo-5-nitro-dioxan-1 ,3; 5- chloro-2-methyl-4-isothaliazolin-3-one, 2,6-di-tert.butyl-p-cresol, etc., in amounts up to 2% by weight.
  • the cleaning compositions which contain less than 2 wt. % of water exhibit stability at reduced and increased temperatures.
  • compositions remain clear and stable in the range of 4°C to 50°C, especially 2°C to 43°C.
  • Such compositions exhibit a pH, at 1% solution, in the acid or neutral range depending on intended end use.
  • the liquids are readily pourable and exhibit a viscosity in the range of 6 to 60 milliPascal second (mPas.) as measured at 25°C with a Brookfield RVT Viscometer using a #1 spindle rotating at 20 RPM.
  • the viscosity is maintained in the range of 10 to 40 mPas.
  • compositions are easily prepared simply by combining all the ingredients in a suitable vessel or container.
  • the order of mixing the ingredients is not particularly important and generally the various ingredients can be added sequentially.
  • the water soluble container which can be in the form of a sachet, a blow molded capsule or other blow molded shapes, an injected molded ampoule or other injection molded shapes, or rotationally molded spheres or capsules are formed from a water soluble thermoplastic resin.
  • Water soluble plastics which may be considered for forming the container include low molecular weight and/or chemically modified polylactides; such polymers have been produced by Chronopol, Inc. and sold under the Heplon trademark.
  • Also included in the water soluble polymer family are melt processable poly(vinyl) alcohol resins (PVA); such resins are produced by Texas Polymer Services, Inc., tradenamed Vinex, and are produced under license from Air Products and
  • Suitable resins include poly (ethylene oxide) and cellulose derived water soluble carbohydrates.
  • the former are produced by Union Carbide, Inc. and sold under the tradename Polyox; the latter are produced by Dow Chemical, Inc. and sold under the Methocel trademark.
  • the cellulose derived water soluble polymers are not readily melt processable.
  • the preferred water soluble thermoplastic resin for this application is Chris Craft Film. Any number or combination of PVA resins can be used.
  • the preferred grade, considering resin processability, container durability, water solubility characteristics, and commercial viability is Monosol film having a weight average molecular weight range of about 55,000 to 65,000 and a number average molecular weight range of about 27,000 to 33,000.
  • the sachet may be formed from poly(vinyl) alcohol film.
  • the pelletized, pre- dried, melt processable polyvinyl alcohol (PVA) resin is feed to a film extruder.
  • the feed material may also contain pre-dried color concentrate which uses a PVA carrier resin.
  • Other additives, similarly prepared, such as antioxidants, UV stabilizers, antiblocking additives, etc. may also be added to the extruder.
  • the resin and concentrate are melt blended in the extruder.
  • the extruder die may consist of a circular die for producing blown film or a coat hanger die for producing cast film. Circular dies may have rotating die lips and/or mandrels to modify visual appearance and/or properties. Typical film properties are:
  • Weight Average Molecular Weight (Mw) 15,000 to 95,000; preferred is 55,000- 65,000 3.
  • Number Average Molecular Weight (Mn) 7,500 to 60,000; preferred is 27,000 to 33,000.
  • Preferred poly(vinyl) alcohol film is formed from Monosol 7030 or Monosol 8630
  • the extruded film is slit to the appropriate width and wound on cores. Each core holds one reel of film.
  • the reels of slit film are fed to either a vertical form, fill, seal machine (VFFS) or a horizontal form, fill, seal machine (HFFS).
  • VFFS vertical form, fill, seal machine
  • HFFS horizontal form, fill, seal machine
  • the Form, Fill, Seal machine (FFS) makes the appropriate sachet shape (cylinder, square, pillow, oval, etc.) from the film and seals the edges longitudinally (machine direction seal).
  • the FFS machine also makes an end seal (transverse direction seal) and fills the appropriate volume of non-aqueous liquid above the initial transverse seal.
  • the FFS machine then applies another end seal.
  • the liquid is contained in the volume between the two end seals.
  • Blow molded capsules are formed from the poly(vinyl) alcohol resin having a molecular weight of about 50,000 to about 70,000 and a glass transition temperature of about 28 to 33°C.
  • Pelletized resin and concentrate(s) are feed into an extruder.
  • the extruder into which they are fed has a circular, oval, square or rectangular die and an appropriate mandrel.
  • the molten polymer mass exits the die and assumes the shape of the die/mandrel combination..
  • Air is blown into the interior volume of the extrudate (parison) while the extrudate contacts a pair of split molds.
  • the molds control the final shape of the package. While in the mold, the package is filled with the appropriate volume of liquid. The mold quenches the plastic.
  • the liquid is contained within the interior volume of the blow molded package.
  • An injection molded ampoule or capsule is formed from the poly(vinyl) alcohol resin having a molecular weight of about 50,000 to about 70,000 and a glass transition temperature of about 28 to 38°C.
  • Pelletized resin and concentrate(s) are fed to the throat of an reciprocating screw, injection molding machine. The rotation of the screw pushes the pelletized mass forward while the increasing diameter of the screw compresses the pellets and forces them to contact the machine's heated barrel.
  • the molten polymer mass collects in front of the screw as the screw rotates and begins to retract to the rear of the machine.
  • a rotationally molded sphere or capsule is formed from the poly(vinyl) alcohol resin having a molecular weight of about 50,000 to about 70,000 and a glass transition temperature of about 28 to 38°C. Pelletized resin and concentrate are pulverized to an appropriate mesh size, typically 35 mesh.
  • a specific weight of the pulverized resin is fed to a cold mold having the desired shape and volume.
  • the mold is sealed and heated while simultaneously rotating in three directions.
  • the powder melts and coats the entire inside surface of the mold.
  • the mold is cooled so that the resin solidifies into a shape which replicates the size and texture of the mold.
  • the liquid is injected into the hollow package using a heated needle or probe after filling, the injection port of the package is heat sealed.
  • Example 1 The following formulas were prepared in wt. % by simple mixing:
  • the sachets containing the above formulas were dissolved in one to two minutes in 500 ml of water in a vessel.

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

Abstract

L'invention concerne un contenant hydrosoluble renfermant une composition de nettoyage liquide contenant approximativement en poids : (i) entre 1 % et 13 % d'un composé organique sélectionné parmi le groupe composé d'un acide gras, d'un ester organique insoluble dans l'eau et d'un fluide de silicone, et d'un mélange correspondant, (ii) entre 45 % et 90 % d'au moins un agent de surface non ionique et (iii) entre 1 % et 10 % d'un parfum, d'une une huile essentielle, d'un composé organique insaturé ou saturé insoluble dans l'eau, ledit composé comptant entre 4 et 20 atomes de carbone.
EP02739802A 2001-06-18 2002-06-13 Systeme de nettoyage renfermant une composition de nettoyage liquide placee dans un contenant soluble dans l'eau Withdrawn EP1397479A1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US883690 1986-07-09
US905240 1997-08-01
US88369001A 2001-06-18 2001-06-18
US09/905,240 US6326345B1 (en) 2001-06-18 2001-07-13 Cleaning system including a liquid cleaning composition containing a short chain amphiphile disposed in a water soluble container
US10/008,115 US6444632B1 (en) 2001-06-18 2001-11-07 Cleaning system including a liquid cleaning composition disposed in a water soluble container
US8115 2001-11-07
PCT/US2002/018330 WO2002102958A1 (fr) 2001-06-18 2002-06-13 Systeme de nettoyage renfermant une composition de nettoyage liquide placee dans un contenant soluble dans l'eau

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EP1397479A1 true EP1397479A1 (fr) 2004-03-17

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AU2003245920A1 (en) 2002-06-27 2004-01-19 Unilever Plc Perfume composition

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US4886615A (en) * 1985-08-05 1989-12-12 Colgate-Palmolive Company Hydroxy polycarboxylic acid built non-aqueous liquid cleaning composition and method for use, and package therefor
US4846992A (en) * 1987-06-17 1989-07-11 Colgate-Palmolive Company Built thickened stable non-aqueous cleaning composition and method of use, and package therefor
DE3621536A1 (de) * 1986-06-27 1988-01-07 Henkel Kgaa Fluessiges waschmittel und verfahren zu seiner herstellung
US5382376A (en) * 1992-10-02 1995-01-17 The Procter & Gamble Company Hard surface detergent compositions
EP1024188B1 (fr) * 1999-01-26 2005-03-16 The Procter & Gamble Company Composition de blanchiment comportant des agents tensioactifs nonioniques sensiblement linéaires
CH695688A5 (de) * 1999-07-06 2006-07-31 Mifa Ag Frenkendorf Flüssiges portionierbares wasserfreies Waschmittelkonzentrat.

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