EP1458923A2 - Traitement d'articles textiles au moyen d'agents chelatants hydrophobes - Google Patents

Traitement d'articles textiles au moyen d'agents chelatants hydrophobes

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Publication number
EP1458923A2
EP1458923A2 EP02792450A EP02792450A EP1458923A2 EP 1458923 A2 EP1458923 A2 EP 1458923A2 EP 02792450 A EP02792450 A EP 02792450A EP 02792450 A EP02792450 A EP 02792450A EP 1458923 A2 EP1458923 A2 EP 1458923A2
Authority
EP
European Patent Office
Prior art keywords
agents
lipophilic fluid
composition
fabric
mixtures
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Withdrawn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
EP02792450A
Other languages
German (de)
English (en)
Inventor
William Michael Scheper
Christopher Mark Perkins
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.)
Procter and Gamble Co
Original Assignee
Procter and Gamble 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
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Publication of EP1458923A2 publication Critical patent/EP1458923A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
    • D06L1/02—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using organic solvents
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
    • D06L1/02—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using organic solvents
    • D06L1/04—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using organic solvents combined with specific additives

Definitions

  • the present invention relates to compositions and methods to treat fabrics with a lipophilic fluid and hydrophobic chelants.
  • the present invention is also directed to compositions containing a lipophilic fluid and a hydrophobic chelant.
  • Dry cleaning typically involves the use of non-aqueous, lipophilic fluids as the solvent or solution for cleaning. While the absence of water permits the cleaning of fabrics without the potential disastrous side effects water may present, these lipophilic fluids do not perform well on hydrophilic and/or combination soils.
  • lipophilic fluids are typically used in "neat” form (i.e. they contain no additional additives)
  • dry cleaners must often perform pre-treating and/or pre-spotting to remove tough soils from fabrics prior to the dry cleaning cycle. Further, nothing is typically added to boost "whiteness” or “brightness” in fabrics that are dry-cleaned as can be observed from “dingy” or “dull” fabrics returned from a dry cleaner. It would be desirable to add bleaching to the lipophilic fluid treatment regimen in order to increase the lipophilic fluids' brightening, whitening, and/or soil removal capability thereby reducing or eliminating the need for pre- treating and/or pre-spotting.
  • the present invention is directed to a method for attaining improved fabric cleaning in a lipophilic fluid treatment regimen, wherein the method includes the steps of exposing the fabric to a lipophilic fluid and exposing the fabric to a hydrophobic chelant.
  • the present invention is also directed to a composition for attaining improved fabric cleaning in a lipophilic fluid treatment regimen, wherein the composition includes a lipophilic fluid and a hydrophobic chelant.
  • fabrics and “fabric” used herein is intended to mean any article that is customarily cleaned in a conventional laundry process or in a dry cleaning process. As such the term encompasses articles of clothing, linen, drapery, and clothing accessories. The term also encompasses other items made in whole or in part of fabric, such as tote bags, furniture covers, tarpaulins and the like.
  • soil means any undesirable substance on a fabric article that is desired to be removed.
  • water-based soils it is meant that the soil comprised water at the time it first came in contact with the fabric article, or the soil retains a significant portion of water on the fabric article.
  • water-based soils include, but are not limited to beverages, many food soils, water soluble dyes, bodily fluids such as sweat, urine or blood, outdoor soils such as grass stains and mud.
  • the lipophilic fluid herein is one having a liquid phase present under operating conditions of a fabric article treating appliance, in other words, during treatment of a fabric article in accordance with the present invention.
  • a lipophilic fluid can be fully liquid at ambient temperature and pressure, can be an easily melted solid, e.g., one which becomes liquid at temperatures in the range from about 0 deg. C to about 60 deg. C, or can comprise a mixture of liquid and vapor phases at ambient temperatures and pressures, e.g., at 25 deg. C and 1 arm. pressure.
  • the lipophilic fluid is not a compressible gas such as carbon dioxide.
  • the lipophilic fluids herein be nonflammable or have relatively high flash points and/or low VOC (volatile organic compound) characteristics, these terms having their conventional meanings as used in the dry cleaning industry, to equal or, preferably, exceed the characteristics of known conventional dry cleaning fluids.
  • suitable lipophilic fluids herein are readily flowable and nonviscous.
  • lipophilic fluids herein are required to be fluids capable of at least partially dissolving sebum or body soil as defined in the test hereinafter.
  • Mixtures of lipophilic fluid are also suitable, and provided that the requirements of the Lipophilic Fluid Test, as described below, are met, the lipophilic fluid can include any fraction of dry-cleaning solvents, especially newer types including fluorinated solvents, or perfluorinated amines.
  • Some perfluorinated amines such as perfluorotributylamines while unsuitable for use as lipophilic fluid may be present as one of many possible adjuncts present in the lipophilic fluid-containing composition.
  • lipophilic fluids include, but are not limited to, diol solvent systems e.g., higher diols such as C6- or C8- or higher diols, organosilicone solvents including both cyclic and acyclic types, and the like, and mixtures thereof.
  • nonaqueous lipophilic fluids suitable for incorporation as a major component of the compositions of the present invention include low-volatility nonfluorinated organics, silicones, especially those other than amino functional silicones, and mixtures thereof.
  • Low volatility nonfluorinated organics include for example OLEAN® and other polyol esters, or certain relatively nonvolatile biodegradable mid-chain branched petroleum fractions.
  • nonaqueous lipophilic fluids suitable for incorporation as a major component of the compositions of the present invention include, but are not limited to, glycol ethers, for example propylene glycol methyl ether, propylene glycol n-propyl ether, propylene glycol t-butyl ether, propylene glycol n-butyl ether, dipropylene glycol methyl ether, dipropylene glycol n-propyl ether, dipropylene glycol t-butyl ether, dipropylene glycol n-butyl ether, tripropylene glycol methyl ether, tripropylene glycol n-propyl ether, tripropylene glycol t- butyl ether, tripropylene glycol n-butyl ether.
  • glycol ethers for example propylene glycol methyl ether, propylene glycol n-propyl ether, propylene glycol t-butyl ether, prop
  • Suitable silicones for use as a major component, e.g., more than 50%, of the composition include cyclopentasiloxanes, sometimes termed "D5", and/or linear analogs having approximately similar volatility, optionally complemented by other compatible silicones.
  • Suitable silicones are well Icnown in the literature, see, for example, Kirk Othmer's Encyclopedia of Chemical Technology, and are available from a number of commercial sources, including General Electric, Toshiba Silicone, Bayer, and Dow Corning. Other suitable lipophilic fluids are commercially available from Procter & Gamble or from Dow Chemical and other suppliers.
  • a dry- cleaning fluid e.g, flash point etc.
  • a surfactant e.g., a surfactant
  • cyclopentasiloxanes e.g., cyclopentasiloxanes have suitable sebum-dissolving properties and dissolves sebum.
  • the following is the method for investigating and qualifying other materials, e.g., other low-viscosity, free-flowing silicones, for use as the lipophilic fluid.
  • the method uses commercially available Crisco ® canola oil, oleic acid (95% pure, available from Sigma Aldrich Co.) and squalene (99% pure, available from J.T. Baker) as model soils for sebum.
  • the test materials should be substantially anhydrous and free from any added adjuncts, or other materials during evaluation.
  • each vial will contain one type of lipophilic soil.
  • To each vial add 1 g of the fluid to be tested for lipophilicity. Separately mix at room temperature and pressure each vial containing the lipophilic soil and the fluid to be tested for 20 seconds on a standard vortex mixer at maximum setting. Place vials on the bench and allow to settle for 15 minutes at room temperature and pressure.
  • the nonaqueous fluid qualifies as suitable for use as a "lipophilic fluid" in accordance with the present invention.
  • the amount of nonaqueous fluid dissolved in the oil phase will need to be further determined before rejecting or accepting the nonaqueous fluid as qualified.
  • test fluid is also qualified for use as a lipophilic fluid. If needed, the method can be further calibrated using heptacosafluorotributylamine, i.e.,
  • a suitable GC is a Hewlett Packard Gas Chromatograph HP5890 Series II equipped with a split/splitless injector and FID.
  • a suitable column used in determining the amount of lipophilic fluid present is a J&W Scientific capillary column DB-1HT, 30 meter, 0.25mm id, O.lum film thickness cat# 1221131. The GC is suitably operated under the following conditions: Carrier Gas: Hydrogen
  • Preferred lipophilic fluids suitable for use herein can further be qualified for use on the basis of having an excellent garment care profile.
  • Garment care profile testing is well known in the art and involves testing a fluid to be qualified using a wide range of garment or fabric article components, including fabrics, threads and elastics used in seams, etc., and a range of buttons.
  • Preferred lipophilic fluids for use herein have an excellent garment care profile, for example they have a good shrinkage and/or fabric puckering profile and do not appreciably damage plastic buttons.
  • Lipophilic fluids can include linear and cyclic polysiloxanes, hydrocarbons and chlorinated hydrocarbons, with the exception of PERC and DF2000 which are explicitly not covered by the lipophilic fluid definition as used herein. More preferred are the linear and cyclic polysiloxanes and hydrocarbons of the glycol ether, acetate ester, lactate ester families. Preferred lipophilic fluids include cyclic siloxanes having a boiling point at 760 mm Hg. of below about 250°C.
  • cyclic siloxanes for use in this invention are octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.
  • the cyclic siloxane comprises decamethylcyclopentasiloxane (D5, pentamer) and is substantially free of octamethylcyclotetrasiloxane (tetramer) and dodecamethylcyclohexasiloxane (hexamer).
  • useful cyclic siloxane mixtures might contain, in addition to the preferred cyclic siloxanes, minor amounts of other cyclic siloxanes including octamethylcyclotetrasiloxane and hexamethylcyclotrisiloxane or higher cyclics such as tetradecamethylcycloheptasiloxane.
  • the amount of these other cyclic siloxanes in useful cyclic siloxane mixtures will be less than about 10 percent based on the total weight of the mixture.
  • the industry standard for cyclic siloxane mixtures is that such mixtures comprise less than about 1 % by weight of the mixture of octamethylcyclotetrasiloxane.
  • compositions of the present invention include hydrophobic chelants at a level of suitable for the purpose as known by those of ordinary skill in the art. For example from about 1 ppm to about 100 ppm and/or from about 10 ppm to about 50 ppm by weight of the compositions.
  • hydrophobic chelants in accordance with the present invention include EHPG derivatives and diesters of EDTA, derivatives of HEDTA, for example a lauric acid derivative of the formula:
  • R is a C C ⁇ 4 alkyl, typically a C 6 -C 12 allcyl; diester derivatives of EHPG such as shown in the formula:
  • ethylenediaminetetraacetic anhydride derivatives anhydrides (I) of EDTA was treated with 2,6- dimethylphenol, citric acid, ethylenediamine (TJ), ethylene glycol, NH20H.HC1, di-Et diethylaminoethylphosphonate, glycine, HSCH2CH2NH2, or a similar compd. to prep. sym. diamides, diesters, polyamides, or polyesters of EDTA that are useful as chelating agents, stabilizers, or detergent additives. Amides can also be prepd.
  • EDTA ethylenediaminediacetic acid or II with ClCH2CONHMe or BrCH2C0NHMe; amides and esters of EDTA; glycine, N,N'-l,2-ethanediylbis[N-(carboxymethyl)-, reaction products with amino alcohols and amino esters; EDTA ethylenediamine polyamide; detergent additive EDTA polyamide; glycol EDTA polyester; ale EDTA ester; amine EDTA amide; phosphonate EDTA ester; EDTA diesters, the alkyl groups of which consist of up to 22 C atoms; EDTA dialkyl esters; diethyl, didodecyl, and dioctadecyl esters of EDTA; didodecyl EDTA esters; (ethylenedinitrilo)tetraacetic acid dialkyl esters and mixtures thereof.
  • hydrophilic chelants to the polar phase, whereby they become soluble in the hydrophobic phase upon chelating a soil.
  • a low MW lupasol which is only soluble in the water phase
  • the chelation of the polyphenolics may make the lupasol soluble in the lipophilic fluid.
  • Additional chelants suitable for use herein may include silicone chelants or polymeric chelants.
  • EHPG is Ethylene bis([o-hydroxyphenyl]glycine)
  • EDTA is Ethylenediamine tetraacetic acid
  • HEDTA is 2-hydroxyethylethylenediamine triacidic acid
  • the hydrophobic chelants are ligands that have high transition metal binding constants, at least comparable to EDTA.
  • the hydrophobicity is being achieved by esterifying carboxylates to lower anionic charge or by attaching hydrophobic groups to the aromatic portion of EHPG.
  • the chelants are soluble in the lipophilic fluid, such as D5.
  • the chelants have R groups that are esters, amides or separately as alkyl groups on the phenols that are siloxanes, ethyleneoxides and propyleneoxides.
  • the chainlength size should be similar to the alkyl chains maybe up to 10 siloxylethyl groups, 6 or so EOs or POs. Nonlimiting examples of which are shown below.
  • the hydrophobic chelant may be an EDDS type of derivative, especially where diesters and/or alkyl chains are present on the secondary N-atoms.
  • R could also be H.
  • Adjunct materials can vary widely and can be used at widely ranging levels.
  • detersive enzymes such as proteases, amylases, cellulases, Upases and the like as well as bleach catalysts including the macrocyclic types having manganese or similar transition metals all useful in laundry and cleaning products can be used herein at very low, or less commonly, higher levels.
  • Adjunct materials that are catalytic, for example enzymes can be used in "forward" or "reverse” modes, a discovery independently useful from the specific appliances of the present invention.
  • a lipolase or other hydrolase may be used, optionally in the presence of alcohols as adjuncts, to convert fatty acids to esters, thereby increasing their solubility in the lipophilic fluid.
  • any adjunct ingredient must be suitable for use in combination with the lipophilic fluid.
  • compositions may comprise emulsifiers.
  • Emulsifiers are well known in the chemical art. Essentially, an emulsifier acts to bring two or more insoluble or semi-soluble phases together to create a stable or semi-stable emulsion. It is preferred in the claimed invention that the emulsifier serves a dual purpose wherein it is capable of acting not only as an emulsifier but also as a treatment performance booster. For example, the emulsifier may also act as a surfactant thereby boosting cleaning performance. Both ordinary emulsifiers and emulsifier/surfactants are commercially available.
  • cleaning additives include, but are not limited to, builders, surfactants, enzymes, bleach activators, bleach catalysts, bleach boosters, bleaches, alkalinity sources, antibacterial agents, colorants, perfumes, pro-perfumes, finishing aids, lime soap dispersants, composition malodor control agents, odor neutralizers, polymeric dye transfer inhibiting agents, crystal growth inhibitors, photobleaches, non-hydrophobic chelants, anti- tarnishing agents, anti-microbial agents, anti-oxidants, anti-redeposition agents, soil release polymers, electrolytes, pH modifiers, thickeners, abrasives, divalent or trivalent ions, metal ion salts, enzyme stabilizers, corrosion inhibitors, diamines or polyamines and/or their allcoxylates, suds stabilizing polymers, solvents, process aids, fabric softening agents, optical brighteners, hydrotropes, suds or foam suppressors, suds or foam boosters, fabric
  • surfactant conventionally refers to materials that are surface-active either in the water, the lipophilic fluid, or the mixture of the two.
  • Some illustrative surfactants include nonionic, cationic and silicone surfactants as used in conventional aqueous detergent systems.
  • polyoxyethylene lauryl ether with 4 or 23 oxyethylene groups
  • polyoxyethylene cetyl ether with 2, 10 or 20 oxyethylene groups
  • polyoxyethylene stearyl ether with 2, 10, 20, 21 or 100 oxyethylene groups
  • polyoxyethylene (2), (10) oleyl ether with 2 or 10 oxyethylene groups.
  • Commercially available examples include, but are not limited to: ALFONIC, BRU, GENAPOL, NEODOL, SURFONIC, TRYCOL. See also US 6013683 Hill et al.,.
  • Suitable cationic surfactants include, but are not limited to dialkyldimethylammonium salts having the formula:
  • DDAB didodecyldimethylammonium bromide
  • DTAB didodecyldimethylammonium bromide
  • DTAB didodecyldimethylammonium bromide
  • Commercially available examples include,
  • Suitable silicone surfactants include, but are not limited to the polyalkyleneoxide polysiloxanes having a dimethyl polysiloxane hydrophobic moiety and one or more hydrophilic polyalkylene side chains and have the general formula:
  • R 1 (CH 3 ) 2 SiO— [(CH 3 ) 2 S ⁇ O] a — [(CH 3 )(R 1 )SiO] b - ⁇ i(CH 3 ) 2 — R 1 wherein a + b are from about 1 to about 50, preferably from about 3 to about 30 , more preferably from about 10 to about 25, and each R 1 is the same or different and is selected from the group consisting of methyl and a poly(ethyleneoxide/propyleneoxide) copolymer group having the general formula:
  • R 1 being a poly(ethyleneoxide/propyleneoxide) copolymer group, and wherein n is 3 or 4, preferably 3; total c (for all polyalkyleneoxy side groups) has a value of from 1 to about 100, preferably from about 6 to about 100; total d is from 0 to about 14, preferably from 0 to about 3; and more preferably d is 0; total c+dhas a value of from about 5 to about 150, preferably from about 9 to about 100 and each R ⁇ is the same or different and is selected from the group consisting of hydrogen, an allcyl having 1 to 4 carbon atoms, and an acetyl group, preferably hydrogen and methyl group. Examples of these surfactants may be found in US 5705562 Hill and
  • Silwet surfactants are as follows. Name Average MW Average a+b Average total c L-7608 600 1 9
  • the molecular weight of the polyalkyleneoxy group (R1) is less than or equal to about 10,000.
  • the molecular weight of the polyalkyleneoxy group is less than or equal to about 8,000, and most preferably ranges from about 300 to about 5,000.
  • the values of c and d can be those numbers which provide molecular weights within these ranges.
  • the number of ethyleneoxy units (-C2H4O) in the polyether chain (R ⁇ ) must be sufficient to render the polyallcyleneoxide polysiloxane water dispersible or water soluble. If propyleneoxy groups are present in the polyalkylenoxy chain, they can be distributed randomly in the chain or exist as blocks.
  • Preferred Silwet surfactants are L-7600, L-7602, L-7604, L-7605, L-7657, and mixtures thereof. Besides surface activity, polyallcyleneoxide polysiloxane surfactants can also provide other benefits, such as antistatic benefits, and softness to fabrics.
  • polyallcyleneoxide polysiloxanes of the present invention can be prepared according to the procedure set forth in U.S. Pat. No. 3,299,112, incorporated herein by reference.
  • Another suitable silicone surfactant is SF-1488, which is available from GE silicone fluids.
  • surfactants suitable for use in combination with the lipophilic fluid as adjuncts are well known in the art, being described in more detail in Kirk Othmer's Encyclopedia of Chemical Technology, 3rd Ed., Vol. 22, pp. 360-379, "Surfactants and Detersive Systems", incorporated by reference herein. Further suitable nonionic detergent surfactants are generally disclosed in U.S. Patent 3,929,678, Laughlin et al., issued December 30, 1975, at column 13, line 14 through column 16, line 6, incorporated herein by reference.
  • the adjunct may also be an antistatic agent. Any suitable well-known antistatic agents used in laundering and dry cleaning art are suitable for use in the methods and compositions of the present invention.
  • antistatic agents are the subset of fabric softeners which are known to provide antistatic benefits.
  • antistatic agent is not to be limited to just this subset of fabric softeners and includes all antistatic agents.
  • the method of the present invention is directed to attaining improved fabric cleaning in a lipophilic fluid treatment regimen, and includes the steps of exposing the fabric to a lipophilic fluid and exposing the fabric to a hydrophobic chelant. Optionally but preferably, it may include the step of exposing the fabric to a polar phase.
  • the polar phase may include water, alcohol, or mixtures thereof. If the polar phase does include water, it preferably comprises at least about 0.5% water by weight of fabric and at most about 10%) water by weight of fabric.
  • the lipophilic fluid may comprise a linear siloxane, a cyclic siloxane, or mixtures thereof.
  • the lipophilic fluid is selected from the group consisting essentially of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and mixtures thereof. Even more preferably, the lipophilic fluid comprises decamethylcyclopentasiloxane. Most preferably, the lipophilic fluid comprises decamethylcyclopentasiloxane and is substantially free of octamethylcyclotetrasiloxane. Due to the flash points of the aforementioned siloxanes, the method preferably occurs at less than about 80° C.
  • the fabrics may also be exposed to an emulsifier an/or a surfactant either separately or as a result of being contained within the polar phase, the lipophilic fluid, and/or the bleach system.
  • the fabrics may also be exposed to adjunct ingredients selected from the group consisting essentially of enzymes, bleaches, surfactants, fabric softeners, perfumes, antibacterial agents, antistatic agents, brighteners, dye fixatives, dye abrasion inhibitors, anti-crocking agents, wrinkle reduction agents, wrinkle resistance agents, soil release polymers, sunscreen agents, anti-fade agents, builders, chelants, sudsing agents, composition malodor control agents, composition coloring agents, pH buffers, waterproofing agents, soil repellency agents, and mixtures thereof.
  • adjuncts can also be applied either separately or as a result of being contained within the polar phase, the lipophilic fluid, and/or the hydrophobic chelant.
  • composition of the present invention is directed to attaining improved fabric cleaning in a lipophilic fluid treatment regimen, wherein the composition comprises a lipophilic fluid and a hydrophobic chelant.
  • the composition can further comprise a polar phase.
  • the polar phase may include water, alcohol, and mixtures thereof.
  • the polar phase preferably comprises at least about 0.1% water by weight of composition and at most about 5% water by weight of composition.
  • the polar phase may comprise a buffer to maintain pH.
  • the composition may contain non-hydrophobic chelants also to stabilize the product during storage prior to delivery in the lipophilic system.
  • chelating agents may comprise, but are not limited to, ethylenediaminedisuccunate (EDDS), ethylene diamine tetra acetic acid (EDTA), quaternary ammonia compounds, or l-Hydroxyethane-l,l-diphosphonic acid (HEDP).
  • the lipophilic fluid may comprise a linear siloxane, a cyclic siloxane, or mixtures thereof.
  • the lipophilic fluid comprises a lipophilic fluid selected from the group consisting essentially of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and mixtures thereof. More preferably, the lipophilic fluid comprises decamethylcyclopentasiloxane. Most preferably, the lipophilic fluid comprises decamethylcyclopentasiloxane and is substantially free of octamethylcyclotetrasiloxane.
  • the bleach system may include oxygen-based bleach, bleach activator and a peroxide source, pre-formed peracid, oxidative bleach enzyme, photo bleach, bleach boosting compounds, metal bleach catalysts, ozone, chlorine dioxide or mixtures of multiple bleach systems.
  • the polar phase preferably comprises at least about 1% water by weight of fabric.
  • the bleach system has at least about 2 ppm AvO, more preferably at least about 25 ppm AvO, even more preferably at least about 50 ppm AvO, even more preferably at least about 100 ppm AvO.
  • the bleach system has at most about 10000 ppm AvO.
  • the bleach system has at least about 100 ppm AvO and at most about 5000 ppm AvO.
  • the bleach system may be within the polar phase and/or within the lipophilic fluid as opposed to being a stand-alone component. While carrying out the present invention, the fabrics may also be exposed to an emulsifier an/or a surfactant either separately or as a result of being contained within the polar phase, the lipophilic fluid, and/or the bleach system.
  • the fabrics may also be exposed to adjunct ingredients selected from the group consisting essentially of enzymes, bleaches, emulsifiers, surfactants, fabric softeners, perfumes, antibacterial agents, antistatic agents, brighteners, dye fixatives, dye abrasion inhibitors, anti-crocking agents, wrinkle reduction agents, wrinkle resistance agents, soil release polymers, sunscreen agents, anti-fade agents, builders, chelants, sudsing agents, composition malodor control agents, composition coloring agents, pH buffers, waterproofing agents, soil repellency agents, and mixtures thereof.
  • adjuncts can also be applied either separately or as a result of being contained within the polar phase, the lipophilic fluid, and/or the bleach system.
  • the methods and/or compositions of the present invention may be combined with other fabric treatments.
  • the fabric articles prior to the application of the lipophilic fluid the fabric articles may be subjected to the particulate removal method described in co- pending application Serial No. 60/191,965, to Noyes et al., filed March 24, 2000, the relevant parts of which are incorporated herein by reference.
  • the present invention may be used in a service, such as a dry cleaning service, diaper service, uniform cleaning service, or commercial business, such as a Laundromat, dry cleaner, linen service which is part of a hotel, restaurant, convention center, airport, cruise ship, port facility, casino, or may be used in the home.
  • a service such as a dry cleaning service, diaper service, uniform cleaning service, or commercial business, such as a Laundromat, dry cleaner, linen service which is part of a hotel, restaurant, convention center, airport, cruise ship, port facility, casino, or may be used in the home.
  • the methods and/or compositions of the present invention may be performed in an apparatus that is a modified existing apparatus and is retrofitted in such a manner as to conduct the process of the present invention in addition to related processes.
  • compositions of the present invention may also be performed in an apparatus, which is not a modified existing apparatus but is one specifically built in such a manner so as to conduct the process of the present invention or may be added to another apparatus as part of a lipophilic fluid processing system.
  • the methods of the present invention may be performed in an apparatus, which is not a modified existing apparatus but is one specifically built in such a manner so as to conduct the process of the present invention and related processes.
  • An apparatus used to carry out the present invention will typically contain some type of control system. These include electrical systems, such as, the so-called smart control systems, as well as more traditional electro-mechanical systems.
  • the control systems would enable the user to select the size of the fabric load to be cleaned, the type of soiling, the extent of the soiling, the time for the cleaning cycle. Alternatively, the user could use pre-set cleaning and/or refreshing cycles, or the apparatus could control the length of the cycle, based on any number of ascertainable parameters. This would be especially true for electrical control systems. For example, when the collection rate of lipophilic fluid reaches a steady rate the apparatus could turn its self off after a fixed period of time, or initiate another process for the lipophilic fluid.
  • control device In the case of electrical control systems, one option is to make the control device a so-called “smart device”. This could mean including, but not limited to, self diagnostic system, load type and cycle selection, linking the machine to the Internet and allowing for the consumer to start the apparatus remotely, be informed when the apparatus has cleaned a fabric article, or for the supplier to remotely diagnose problems if the apparatus should break down. Furthermore, if the apparatus of the present invention is only a part of a cleaning system, the so called “smart system” could be communicating with the other cleaning devices which would be used to complete the remainder of the cleaning process, such as a washing machine, and a dryer.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detergent Compositions (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

L'invention concerne des procédés et des compositions de traitement de textiles mettant en oeuvre un fluide lipophile et un agent chélatant hydrophobe.
EP02792450A 2001-12-20 2002-12-19 Traitement d'articles textiles au moyen d'agents chelatants hydrophobes Withdrawn EP1458923A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US34309401P 2001-12-20 2001-12-20
US343094P 2001-12-20
PCT/US2002/040650 WO2003054278A2 (fr) 2001-12-20 2002-12-19 Traitement d'articles textiles au moyen d'agents chelatants hydrophobes

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EP1458923A2 true EP1458923A2 (fr) 2004-09-22

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US (1) US20030126690A1 (fr)
EP (1) EP1458923A2 (fr)
JP (1) JP2005513291A (fr)
AU (1) AU2002357905A1 (fr)
CA (1) CA2468207A1 (fr)
WO (1) WO2003054278A2 (fr)

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AU2002357905A8 (en) 2003-07-09
US20030126690A1 (en) 2003-07-10
JP2005513291A (ja) 2005-05-12
WO2003054278A3 (fr) 2004-03-25
CA2468207A1 (fr) 2003-07-03
WO2003054278A2 (fr) 2003-07-03
AU2002357905A1 (en) 2003-07-09

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