EP1230332A1 - Fabric enhancement treatment - Google Patents

Fabric enhancement treatment

Info

Publication number
EP1230332A1
EP1230332A1 EP00977005A EP00977005A EP1230332A1 EP 1230332 A1 EP1230332 A1 EP 1230332A1 EP 00977005 A EP00977005 A EP 00977005A EP 00977005 A EP00977005 A EP 00977005A EP 1230332 A1 EP1230332 A1 EP 1230332A1
Authority
EP
European Patent Office
Prior art keywords
weight
optionally
fabric
mixtures
oil
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Withdrawn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
EP00977005A
Other languages
German (de)
French (fr)
Inventor
Serge Gabriel Pierre Roger Cauwberghs
Hugo Jean-Marie Demeyere
Sumitra Pasupathy
John Christopher Turner
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 EP1230332A1 publication Critical patent/EP1230332A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02After-treatment
    • D06P5/04After-treatment with organic compounds
    • D06P5/08After-treatment with organic compounds macromolecular
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38Cationic compounds
    • C11D1/62Quaternary ammonium compounds
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005Other compounding ingredients characterised by their effect
    • C11D3/001Softening compositions
    • C11D3/0015Softening compositions liquid
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/325Amines
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/325Amines
    • D06M13/332Di- or polyamines
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/46Compounds containing quaternary nitrogen atoms
    • D06M13/463Compounds containing quaternary nitrogen atoms derived from monoamines
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/46Compounds containing quaternary nitrogen atoms
    • D06M13/467Compounds containing quaternary nitrogen atoms derived from polyamines
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/227Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02After-treatment
    • D06P5/04After-treatment with organic compounds
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02After-treatment
    • D06P5/04After-treatment with organic compounds
    • D06P5/06After-treatment with organic compounds containing nitrogen
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00Functionality of the treatment composition and/or properties imparted to the textile material
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/50Modified hand or grip properties; Softening compositions

Definitions

  • the present invention relates to textile and fabric treatment systems which can be suitably applied by the processor or manufacturer of textiles
  • the treatment systems of the present invention provide a wide range of enduring fabric benefits, mter aha, water absorbency. softness, anti-static, anti-abrasion, without the necessity to react with the fabric material itself
  • Cellulosic fabric is relatively robust to the rigors of mechanical abrasion whether due to wearing of the fabric or whether due to the laundering process
  • Cotton is hydrophihc, efficiently absorbing perspiration and providing a "breathable " feel to the wearer Cotton is easily fabricated and dyed
  • the present invention meets the aforementioned needs in that it has been surprisingly discovered that textile finishes which provide enhanced fabric benefits can be applied by the fabric manufacturers or the garment fabricators to fabric, preferably cellulosic fiber containing fabric The finishes can be applied to the treated material at any point in the processing of the fabric
  • the first aspect of the present invention relates to the treatment of textiles or fabric durmg any point in the manufacture process including after fabrication into an article of manufacture, inter alia, articles of apparel
  • the present invention relates to textile enhancement dispersion compositions comprising a) from about 0 05% b ⁇ weight, of a softening compound having a transition temperature of less than 30 °C, b) optionally less than about 25% by weight, of a principal solvent, preferably said principal solvent has a ClogP of from about 0 15 to about 1 , c) optionally from about 0 001 % to about 90% by weight, of one or more dye fixing agents.
  • the present invention further relates to a method for providing textile and fabric enhancement benefits, said method comprising the step of contacting textiles or fabric with the softening compound according to the invention or dispersion thereof or compositions of the present invention in industry, in particular at a point during manufacture or after fashioning into an article of apparel
  • the textile enhancement compositions of the present invention are applied to fabric or textiles and, because they are fabric substantive, remain on the fabric preventing one or more pejorative effects which occur during fabric life
  • the fabric care compositions of the present invention typically comprise at least about 0 05%, preferably at least about 1%. more preferably from about 10%>. more preferably from about 20%) to about 80%, more preferably to about 60%. most preferably to about 45% by weight, of the composition of one or more fabric softener actives having a transition temperature of less than 30C, preferably below 15C Fabric softening actives are an essential element of the invention compositions
  • transition temperature it is meant the temperature at which the physical state of the softener active changes from crystalline into liquid crystalline when in contact with water, as measured by e g running Differential Scanning Calo ⁇ metry with a DSC apparatus ex TA Instruments, on a dispersion of the softener active m water
  • the preferred fabric softening actives according to the present invention are amines havmg the formula
  • each R is independently Ci -Cg alkyl. Cj-Cg hydroxyalkyl. benzyl, and mixtures thereof.
  • R* is preferably Ci 1-C22 linear alkyl. C ⁇ 1-C22 branched alkyl, C ⁇ 1-C22 linear alkenyl. C j 1-C22 branched and mixtures thereof,
  • Q is a carbonyl moiety independently selected from the group consisting of esters, secondary amides, tertiary amides, carbonate, mono carbonyl substituted alkylene, poly carbonyl substituted alkylene. and mixtures thereof, preferably ester or secondary amide.
  • X is a softener compatible a on.
  • the index m has a value of from 1 to 3.
  • the index n has a value of from 1 to 4. preferably 2 or 3. more preferably 2
  • the unit -OC(0)Rl represents a fatty acyl unit which is typically derived from a triglyceride source
  • the triglyceride source is preferably derived from tallow, partially hydrogenated tallow, lard, partially hydrogenated lard, vegetable oils and/or partially hydrogenated vegetable oils, such as, canola oil. safflower oil, peanut oil, sunflower oil, corn oil, soybean oil. tall oil. rice bran oil. etc and mixtures of these oils
  • the source of triglyceride is selected from canola oil. partially hydrogenated canola oil. and mixtures thereof
  • the following are non-limiting examples of preferred softener actives according to the present invention
  • N.N-d ⁇ (oleyl-oxy-ethyl)-N.N-d ⁇ methyl ammonium chloride N,N-d ⁇ (canolyl-oxy-ethyl)-N.N-d ⁇ methyl ammonium chloride, N.N-d ⁇ (oleyl-oxy-ethyl)-N-meth ⁇ 1.
  • N-(2-hydroxyethyl) ammonium methyl sulfate N,N-d ⁇ (canolyl-oxy-ethyl)-N-methyl, N-(2-hydroxyethyl) ammonium methyl sulfate, N,N-d ⁇ (oleylam ⁇ doethyl)-N-meth ⁇ l, N-(2-hydroxyethyl) ammonium methyl sulfate, N.N-d ⁇ (2-oleyloxy-2-oxo-ethyl)-N.N-d ⁇ methyl ammonium chloride, N.N-d ⁇ (2-canolyloxy-2-oxo-eth , l)-N.N-d ⁇ methyl ammonium chloride.
  • Still another essential element of the mvention is a liquid carrier Indeed, by use of this carrier, a dispersion is obtained Liquid Carrier
  • liquid carrier Suitable liquid carriers are selected from water, organic solvents and mixtures thereof
  • the liquid carrier employed in the instant compositions is preferably at least primarily water due to its low cost relative availability , safety , and environmental compatibility
  • the level of water in the liquid carrier is preferably at least 50%. most preferably at least 60%. by weight of the carrier Mixtures of water and low molecular weight, e g . ⁇ 200. organic solvent, e g . lower alcohol such as ethanol. propanol. isopropanol or butanol are useful as the carrier liquid
  • Low molecular weight alcohols include monoh d ⁇ c. dihyd ⁇ c (glycol. etc ) t ⁇ hyd ⁇ c (glycerol. etc ). and higher polyhyd ⁇ c (pol ols) alcohols
  • the obtained dispersion will have a particle size of less than 100 micrometers, as measured by laser diffraction (for example, a Malvern MastcrsizcrS . from Malvern Instruments)
  • the fabric conditioning and fabric appearance compositions of the present invention may optionally comprise the following optional ingredients Principal solvent
  • compositions of the present invention may also optionally comprise a principal solvent
  • the level of principal solvent present in the compositions of the present invention is typically less than about 95%, preferably less than about 50%. more preferably less than about 25%. most preferably less than about 15% by weight
  • Some embodiments of isotropic liquid embodiments of the present invention may comprise no principal solvent but may substitute instead a suitable nonionic surfactant
  • the principal solvents of the present invention are primarily used to obtain liquid compositions having sufficient clarity and viscosity Principal solvents must also be selected to minmize solvent odor impact in the composition
  • isopropyl alcohol is not an effective principal solvent in that it does not serve to produce a composition having suitable viscosity Isopropanol also fails as a suitable principal solvent because it has a relatively strong odor
  • Principal solvents are also selected for their ability to provide stable compositions at low temperatures, preferably compositions comprising suitable principal solvents are clear down to about 4° C and have the ability to fully recover their clarity if stored as low as about 7° C
  • the principal solvents according to the present invention are selected base upon their octanol/water partition coefficient (P)
  • the octanol/water partition coefficient is a measure of the ratio of the concentrations of a particular principal solvent in octanol and water at equilibrium
  • the partition coefficients are conveniently expressed and reported as their logarithm to the base 10, logP
  • logP logP
  • ClogP The "calculated logP” (ClogP) is detemiined by the fragment approach of Hansch and Leo ( cf . A Leo. m Comprehensive Medicinal Chemistry, Vol 4. C Hansch. P G Sammens. J B Taylor and C A Ransden. Eds . p 295.
  • the principal solvents suitable for use in the present invention are selected from those having a ClogP of from about 0 15 to about 1, preferably from about 0 15 to about 0 64, more preferably from about 0 25 to about 0 62. most preferably form about 0 4 to about 0 6
  • the principal solvent is at least to some degree an asymmetric molecule, preferably having a melting, or solidification point which allows the principal solvent to be liquid at or near room temperature
  • Low molecular weight principal solvents may be desirable for some embodiments More preferred molecules are highly asymmetrical
  • Dye fixing agent is an optional component of the invention composition
  • Dye fixing agents, or "fixatives” are well-known, commercially available materials which are designed to improve the appearance of dyed fabrics by minimizing the loss of dye from fabrics due to w ashing
  • Cationic fixatives are available under various trade names from several suppliers Representative examples include CROSCOLOR PMF (July 1981. Code No 7894) and CROSCOLOR NOFF (January 1988. Code No 8544) from Crosfield. INDOSOL E-50 (February 27, 1984. Ref No 6008 35 84, polyethyleneamine-based) from Sandoz. SANDOFIX TPS. which is also available from Sandoz and is a preferred polycationic fixative for use herein and SANDOFIX SWE (cationic resinous compound), REWIN SRF. REWIN SRF-0 and REWIN DWR from CHT-Beithch GMBH.
  • Other cationic dye fixing agents are described in "Aftertreatments for improving the fastness of dyes on textile fibres" by Christopher C. Cook (REV. PROG. COLORATION Vol. 12, 1982).
  • Dye fixing agents suitable for use in the present invention are ammonium compounds such as fatty acid - diamine condensates e.g. the hydrochloride. acetate, metosulphate and benzyl hydrochloride of oleyldiethyl aminoethylamide. oleylmethyl-dicthylenediaminemethosulphate.
  • Preferred dye fixing agents are the cellulose reactive dye fixing agents.
  • cellulose reactive dye fixing agent is defined herein as "a dye fixative agent which reacts with the cellulose fibers upon application of heat or upon a heat treatment either m situ or by the formulator " .
  • the cellulose reactive dye fixing agents suitable for use in the present invention can be defined by the following test procedure.
  • All four swatches (the two control swatches and the two treated swatches, one of each which has been treated by the ironing calender) are washed separately in Launder-O-Meter pots under typical conditions with a commercial detergent used at the recommended dosage for ' ⁇ hour at 60°C. followed by a thorough rinsing of 4 times 200 ml of cold water and subsequently line dried.
  • DE values the computed color difference
  • DE values relate to the magnitude and direction of the difference between two psychophysical color stimuli defined by tristimulus values, or by chromaticitv coordinates and luminance factor, as computed by means of a specified set of color- difference equations defined in the CIE 1976 CIELAB opponent-color space, the Hunter opponent- color space, the F ⁇ ele-Mac Adam-Chicke ⁇ ng color space or any equivalent color space
  • the lower the DE value for a sample the closer the sample is to the un-tested sample and the greater the color fastness benefit
  • the candidate is a cellulose reactive dye fixing agent for the purposes of the invention
  • cellulose reactive dye fixing agents are compounds which contain a cellulose reactive moiety
  • non limiting examples of these compounds include halogeno-t ⁇ azmes, vinyl sulphones. epichlorhyd ⁇ ne derivatives, hydroxyethylene urea derivatives, formaldehyde condensation products, polycarboxylates, glyoxal and glutaraldehyde derivatives, and mixtures thereof
  • halogeno-t ⁇ azmes vinyl sulphones. epichlorhyd ⁇ ne derivatives, hydroxyethylene urea derivatives, formaldehyde condensation products, polycarboxylates, glyoxal and glutaraldehyde derivatives, and mixtures thereof
  • halogeno-t ⁇ azmes vinyl sulphones. epichlorhyd ⁇ ne derivatives, hydroxyethylene urea derivatives, formaldehyde condensation products, polycarboxylates, glyoxal and glutaraldehyde derivatives, and mixtures thereof
  • Preferred hydroxyethylene urea derivatives include dimethyloldihydroxyethylene. urea, and dimethyl urea glyoxal
  • Preferred formaldehyde condensation products include the condensation products derived from formaldehyde and a group selected from an amino-group. an lmino-group, a phenol group, an urea group, a cyanamide group and an aromatic group
  • Commercially available compounds among this class are Sandofix WE 56 ex Clariant.
  • Zetex E ex Zeneca and Levogen BF ex Bayer Preferred polycarboxylates derivatives include butane tetracarboxihc acid derivatives, citric acid derivatives, polyacrylates and derivatives thereof
  • a most preferred cellulosic reactive dye fixing agents is one of the hydroxyethylene urea derivatives class commercialized under the tradename of Indosol CR ex Clariant
  • Still other most preferred cellulosic reactive dye fixing agents are commercialized under the tradename Rewin DWR and Rewin WBS ex CHT R Beithch
  • compositions of the present invention optionally comprise from about 0 01%, preferably from about 0 05%). more preferably from about 0 5%o to about 50%. preferably to about 25%), more preferably to about 10%> by weight, most preferably to about 5% by weight, of one or more dye fixing agents Crystal Growth Inhibitor
  • compositions of the present invention optionally comprise from about 0 005%. preferably from about 0 5%. more preferably from about 0 l%o to about 1%, preferably to about 0 5%), more preferably to about 0 25%. most preferably to about 0 2% by weight, of one or more crystal growth inhibitors
  • Crystal Growth Inhibition Test is used to determine the suitability of a material for use as a crystal growth inhibitor Crystal Growth Inhibition Test (CGIT)
  • the suitability of a material to serve as a crystal growth inhibitor according to the present invention can be determined by evaluating in vitro the growth rate of certain inorganic micro- crystals
  • the procedure of Nancollas et al described in "Calcium Phosphate Nucleation and Growth in Solution”. Prog Crystal Growth Charact . Vol 3. 77-102, (1980). incorporated herein by reference, is a method which is suitable for evaluating compounds for their crystal growth inhibition
  • the graph below serves as an example of a plot indicating the time delay (t-lag) in crystal formation afforded by a hypothetical crystal growth inhibitor
  • the observed t-lag provides a measure of the compound's efficiency with respect to delaying the growth of calcium phosphate crystal The greater the t-lag. the more efficient the crystal growth inhibitor
  • KC1 35 mL
  • 0 0175M CaCl 2 50mL
  • 0 01M KH 2 P0 4 50mL
  • de-ionized water 350mL
  • a standard pH electrode equipped with a Standard Calomel Reference electrode is inserted and the temperature adjusted to 37° C while purging of the solution of oxygen
  • a solution of the cr stal growth inhibitor to be test is then added
  • a typical inhibitor test concentration is 1 x 10 6 M
  • the solution is titrated to pH 7 4 with 0 05 M KOH
  • the mixture is then treated with 5 mL s of a hydroxyapatite slurry
  • the hydroxyapatite slurry can be prepared by digesting Bio-Gel ® HTP hydroxyapatite powder (100 g) in 1 L of distilled water the pH of which is adjusted to 2 5 by the addition of sufficient 6N HC1 and subsequently heating the solution until all of the hydroxyapatite is dissolved
  • Crystal growth inhibitors which are suitable for use in the present mvention have a t-lag of at least 10 minutes, preferably at least 20 minutes, more preferably at least 50 minutes, at a concentration of 1 x 10 "6 M Crystal growth inhibitors are differentiated form chelating agents by the fact that crystal growth inhibitors have a low binding affinity of heavy metal ions, I e , copper For example, crystal growth inhibitors have an affinity for copper ions in a solution of 0 1 ionic strength when measured at 25° C. of less than 15, preferably less than 12
  • the preferred crystal growth inhibitors of the present invention are selected from the group consisting of carboxyhc compounds, organic diphosphonic acids, and mixtures thereof The following are non-limitmg examples of preferred crystal growth inhibitors
  • Non-limiting examples of carboxyhc compounds which serve as crystal growth inhibitors include glycohc acid, phytic acid, poly carboxyhc acids, polymers and co-polymers of carboxyhc acids and polycarboxyhc acids, and mixtures thereof
  • the inhibitors may be in the acid or salt form
  • the polycarboxy he acids comprise materials having at least two carboxyhc acid radicals which are separated by not more than two carbon atoms (e g , methyl ene units)
  • the preferred salt fo ⁇ ns include alkali metals, lithium, sodium, and potassium, and alkanolammomum
  • the polycarboxylates suitable for use m the present invention are further disclosed in U S 3, 128.287. U S 3.635.830, U S 4.663.071. U S 3.923.679. U S 3.835.163. U S 4.158,635. U S 4.120.874 and U S 4,102.903. each of which is included herein by reference
  • polycarboxylates include ether hydroxypolycarboxylates, polyacrylate polymers, copolymers of maleic anhydride and the ethylene ether or vinyl methyl ethers of acrylic acid Copolymers of 1.3.5-t ⁇ hydroxybenzene, 2. 4.
  • 6-t ⁇ sulphon ⁇ c acid, and carboxymethyloxysuccinic acid are also useful Alkali metal salts of polyacetic acids, for example, ethylenediamine tetraacetic acid and nitrilot ⁇ acetic acid, and the alkali metal salts of polycarboxylates, for example, mel tic acid, succimc acid, oxydisuccimc acid, polymaleic acid, benzene 1,3,5-t ⁇ carboxyhc acid, carboxymethyloxysuccinic acid, are suitable for use m the present invention as crystal growth inhibitors
  • polyacetic acids for example, ethylenediamine tetraacetic acid and nitrilot ⁇ acetic acid
  • polycarboxylates for example, mel tic acid, succimc acid, oxydisuccimc acid, polymaleic acid, benzene 1,3,5-t ⁇ carboxyhc acid, carboxymethyloxysuccinic acid
  • the polymers and copolymers which are useful as crystal growth inhibitors have a molecular weight which is preferably greater than about 500 daltons to about 100.000 daltons, more preferably to about 50,000 daltons
  • Examples of commercially available materials for use as crystal growth inhibitors include, polyacrylate polymers Good-Rite® ex BF Goodrich. Acrysol® ex Rohm & Haas. Sokalan® ex BASF, and Norasol® ex Norso Haas Preferred are the Norasol® polyacrylate polymers, more preferred are Norasol® 4 ION (MW 10.000) and Norasol® 440N (MW 4000) which is an ammo phosphonic acid modified polyacrylate polymer, and also more preferred is the acid fonn of this modified polymer sold as Norasol® QR 784 (MW 4000) ex Norso-Haas
  • Polycarboxylate crystal growth inhibitors include citrates, e g , citric acid and soluble salts thereof (particularly sodium salt), 3.3-d ⁇ carboxy-4-oxa-1.6-hexaned ⁇ oates and related compounds further disclosed in U S 4.566.984 incorporated herein by reference.
  • 2-dodecenylsucc ⁇ nate, 2-pentadecenyl succinate. are non-hmitmg examples
  • Other suitable polycarboxylates are disclosed in U S 4.144.226.
  • Organic Phosphonic Acids are also suitable for use as crystal growth inhibitors
  • the tenn ' organic diphosphonic acid is defined as "an organo- diphosphonic acid or salt which does not comprise a nitrogen atom"
  • Preferred organic diphosphonic acids include Cj-C diphosphonic acid, preferably C 2 diphosphonic acid selected from the group consisting of ethylene diphosphonic acid, ⁇ -hydroxy -2 phenyl ethyl diphosphonic acid, methylene diphosphonic acid, v ⁇ nyhdene-1.1 -diphosphonic acid .
  • compositions of the present invention comprise from about 0 01%, preferably from about 0 1%> to about 20%), preferably to about 10% by weight, of a fabric abrasion reducing polymer
  • the prefered reduced abrasion polymers of the present invention are water-soluble polymers
  • water-soluble is defined as "a polymer which when dissolved in water at a level of 0 2% by weight, or less, at 25° C, forms a clear, isotropic liquid"
  • the fabric abrasion reducing polymers useful in the present invention have the formula wherein the unit P is a polymer backbone which comprises units which are homopolyme ⁇ c or copolymeric D units are defined herein below
  • the term "homopolyme ⁇ c” is defined as "a polymer backbone which is comprised of units having the same unit composition, I e , formed from polymerization of the same monomer
  • copolymeric "' is defined as "a polymer backbone which is comprised of units having a different unit composition, 1 e , formed from the polymerization of two or more monomers"
  • P backbones preferably comprise units having the fo ⁇ nula
  • each R unit is independently hydrogen.
  • Each L unit is independently selected from heteroatom-contaming moieties, non-hmitmg examples of which are selected from the group consisting of
  • R is hydrogen, C]-C ⁇ 2 alkyl.
  • R 2 is Cj-C ]2 alkyl.
  • R 3 is hydrogen Cj-C ⁇ 2 alkyl, C 6 -C 12 aryl, and mixtures thereof, preferably hydrogen or Cj-C 4 alkyl, more preferably hydrogen
  • R 4 is C ⁇ -C ]2 alkyl, C 6 -C 1 aryl, and mixtures thereof
  • the backbones of the fabric abrasion reducing polymers of the present invention comprise one or more D units which are units which comprise one or more units which provide a dye transfer inhibiting benefit
  • the D unit can be part of the backbone itself as represented in the general formula
  • [-P(D) m -] n or the D unit may be incorporated into the backbone as a pendant group to a backbone unit having for example, the formula [CR-CR 2 ] or [(CR0- L1 —
  • the number of D units depends upon the formulation For example, the number of D units will be adjusted to provide water solubility of the polymer as well as efficacy of dye transfer inhibition while providing a polymer which has fabric abrasion reducing properties
  • the molecular weight of the fabric abrasion reducing polymers of the present invention are from about 500, preferably from about 1.000. more preferably from about 100.000 most preferably from 160.000 to about 6,000.000, preferably to about 2.000,000. more preferably to about 1.000.000, yet more preferably to about 500.000. most preferably to about 360.000 daltons Therefore the value of the index n is selected to provide the indicated molecular weight, and providing for a water solubility of least 100 ppm, preferably at least about 300 ppm. and more preferably at least about 1.000 ppm m water at ambient temperature which is defined herein as 25 °C
  • Non-limiting examples of preferred D units are D units which comprise an amide moiety
  • Examples of polymers wherein an amide unit is introduced into the polymer via a pendant group includes polyvinylpyrrohdone having the formula
  • polyacrylamides and N-substituted pol acrylamidcs having the fo ⁇ nula
  • each R' is independently hydrogen. C ⁇ -C 6 alkyl. or both R ' units can be taken together to form a ring comprising 4-6 carbon atoms, polymethacrylamides and N-substituted polymethacrylamides having the general formula CH 3
  • each R " is independently hydrogen.
  • Cj-C 6 alkyl. or both R " units can be taken together to form a ring comprising 4-6 carbon atoms, polyvinylurethanes having the fonnula
  • each R " is independently hydrogen.
  • Cj-C 6 alkyl. or both R ' units can be taken together to form a ring comprising 4-6 carbon atoms
  • D unit wherein the nitrogen of the d e transfer inhibiting moiety is incorporated into the polymer backbone is a poly(2-ethvl-2-oxazohne) having the formula
  • the fabric abrasion reducing polymers of the present invention can comprise any mixture of dye transfer inhibition units which provides the product with suitable properties
  • the preferred polymers which comprise D units which are amide moieties are those which have the nitrogen atoms of the amide unit highly substituted so the nitrogen atoms are in effect shielded to a varying degree by the surrounding non-polar groups This provides the polymers with an amphiphilic character
  • Non-hmitmg examples include polyvmyl-pyrrohdones, polyvinyloxazohdones. N.N-disubstituted polyacrylamides.
  • the amide containing polymers may be present partially hydrolyzed and/or crosslmked forms
  • a preferred polymeric compound for the present mvention is polyvinylpyrrohdone (PVP)
  • PVP polyvinylpyrrohdone
  • This polymer has an amphiphilic character with a highly polar amide group conferring hydrophihc and polar-attracting properties, and also has non-polar methylene and metlnne groups, in the backbone and/or the ring, conferring hydrophobic properties
  • the rings may also provide planar alignment with the aromatic rings in the dye molecules
  • PVP is readily soluble in aqueous and organic solvent systems
  • PVP is available ex ISP. Wayne. New Jersey, and BASF Corp , Parsippany. New Jersey , as a powder or aqueous solutions in several viscosity grades, designated as. e g . K-12. K-15. K-25. and K-30 These K-values indicate the viscosity average molecular weight
  • PVP K-12, K-15. and K-30 are also available ex Polysciences. Inc War ⁇ ngton. Pennsylvania.
  • PVP K-15. K-25. and K-30 and poly(2-ethyl-2-oxazohne) are available ex Ald ⁇ ch Chemical Co . Inc . Milwaukee.
  • Wisconsin PVP K30 (40.000) through to K90 (360.000) are also commercially available BASF under the tradename Luviskol or commercially available ex ISP Still higher molecular PVP like PVP 1 3 MM.
  • commercially available ex Ald ⁇ ch is also suitable for use herein
  • PVP-typc of material suitable for use in the present invention are pol-yvmylpyrrohdone- co-dimethvlaminoethylmethacrylate.
  • Another D unit which provides dye transfer inhibition enhancement to the fabric abrasion reducing polymers desc ⁇ bed herein, are N-oxide units having the formula
  • R 2 wherein R , R " . and R can be any hydrocarbyl unit (for the purposes of the present invention the term "hydrocarbyl" does not include hydrogen atom alone)
  • the N-oxide unit may be part of a polymer, such as a polyamine. i e . polyalkyleneamine backbone, or the N-oxide may be part of a pendant group attached to the polymer backbone
  • a polymer which comprises an the N-oxide unit as a part of the polymer backbone is polyethyleneimine N-oxide
  • Non-limiting examples of groups which can comprise an N-oxide moiety include the N-oxides of certain heterocycles inter aha pyridine. pyrrole, lmidazole.
  • N-oxide unit may be pendant to the ring, for example, aniline oxide
  • N-oxide comprising polymers of the present invention will preferably have a ratio of N- oxidized amme nitrogen to non-oxidized amine nitrogen of from about 1 0 to about 1 2, preferably to about 1 1. more preferably to about 3 1
  • the amount of N-oxide units can be adjusted by the formulator
  • the formulator may co-polyme ⁇ ze N-oxide comprising monomers with non N-oxide comprising monomers to arrive at the desired ratio of N-oxide to non N-oxide ammo units, or the formulator may control the oxidation level of the polymer during preparation
  • the amine oxide unit of the polyamine N-oxides of the present invention have a Pk d less than or equal to 10. preferably less than or equal to 7.
  • the average molecular weight of the N-oxide comprising polymers which provide a dy e transfer inhibitor benefit to reduced fabric abrasion polymers is from about 500 daltons. preferably from about 100.000 daltons. more preferably from about 160.000 daltons to about 6,000.000 daltons, preferably to about 2.000.000 daltons. more preferably to about 360.000 daltons Polymers Comprising Amide Units and N-oxide Units
  • polymers which are fabric abrasion reducing polymers which have dye transfer inhibition benefits are polymers which comprise both amide units and N-oxide units as described herein above
  • Non-limiting examples include co-polymers of two monomers wherein the first monomer comp ⁇ ses an amide unit and the second monomer comprises an N-oxide unit
  • ohgomers or block polymers comprising these units can be taken together to fo ⁇ n the mixed amide/N-oxide polymers
  • the resulting polymers must retain the water solubility requirements described herein above Molecular weight
  • the range as desc ⁇ bed herein above This range is typically higher than the range for polymers hich render only dye transfer inhibition benefits alone
  • the high molecular weight enables the abrasion occurring subsequent to treatment with the polymer to be reduced, especially in a later washing procedure
  • this benefit is partly due to the high molecular weight, thereby enabling the deposition of the polymer on the fabric surface and providing sufficient substantivity that the polymer is able to remain adhered to the fabric during the subsequent use and washing of the fabric
  • increasing the molecular weight will increase the substantivity of the polymer to the fabric surface Ideally the balance of charge density and molecular weight will provide both a sufficient rate of deposition onto the fabric surface and a sufficient adherence to the fabric during a subsequent wash cycle
  • Increasing molecular weight is considered preferable to increasing charge density as it allows a greater choice in the range of
  • compositions of the present invention optionally comprise from about 0 01%, preferably from about 0 1% to about 8%. preferably to about 5%, more preferably to about 3% by weight, of a poly olefin emulsion or suspension in order to provide anti -wrinkle and improved lubrication benefits to the fabrics treated by the fabric care compositions of the present invention
  • the polyolefin is a polyethylene, polypropylene or mixtures thereof
  • the polvolefin may be at least partially modified to contain various functional groups, such as carboxyl. carbony 1, ester, ether, alkylamide, sulfonic acid or amide groups. More preferably, the polyolefin employed in the present invention is at least partially carboxyl modified or, in other words, oxidized. In particular, oxidized or carboxyl modified polyethylene is preferred in the compositions of the present invention.
  • the polyolefin is preferably introduced as a suspension or an emulsion of polyolefin dispersed by use of an emulsifying agent.
  • the polyolefin suspension or emulsion preferably has from 1, preferably from 10%. more preferably from 15% to 50%, more preferably to 35% more preferably to 30% by weight, of polyolefin in the emulsion.
  • the polyolefin preferably has a molecular weight of from 1.000. preferably from 4.000 to 15.000. preferably to 10,000.
  • the emulsifier may be any suitable emulsification or suspending agent.
  • the emulsifier is a cationic. nonionic.
  • any suitable cationic. nonionic or anionic surfactant may be employed as the emulsifier.
  • Preferred emulsifiers are cationic surfactants such as the fatty amine surfactants and in particular the cthoxylatcd fatty amine surfactants.
  • the cationic surfactants are preferred as emulsifiers in the present invention.
  • the polyolefin is dispersed with the emulsifier or suspending agent in a ratio of emulsifier to polyolefin of from 1 : 10 to 3 : 1.
  • the emulsion includes from 0.1 , preferably from 1 %.
  • polyethylene emulsions and suspensions suitable for use in the present invention arc available under the tradename VELUSTROL exHOECHST Aktiengcsellschaft of Frankfurt am Main. Germany.
  • polyethylene emulsions sold under the tradename VELUSTROL PKS. VELUSTROL KPA. or VELUSTROL P-40 may be employed in the compositions of the present invention.
  • compositions of the present invention can optionally comprise from about 0.01%. preferably from about 0.035% to about 0.2%. more preferably to about 0.1% for antioxidants. preferably to about 0.2% for reductive agents, of a stabilizer.
  • stabilizer includes antioxidants and reducti ⁇ e agents. These agents assure good odor stability under long ten storage conditions for the compositions and compounds stored in molten fonn.
  • the use of antioxidants and reductive agent stabilizers is especially critical for low scent products (low perfume).
  • Non-hmitmg examples of antioxidants that can be added to the compositions of this invention include a mixture of ascorbic acid, ascorbic palmitate, propyl gallate. ex Eastman Chemical Products. Inc .
  • Tenox® PG and Tenox S-l a mixture of BHT (butylated hydroxytoluene), BHA (butylated hydroxyanisole), propyl gallate, and citric acid, ex Eastman Chemical Products, Inc , under the trade name Tenox-6, butylated hydroxytoluene. available from UOP Process Division under the trade name Sustane® BHT, tertiary butylhydroqumone, Eastman Chemical Products, Inc , as Tenox TBHQ. natural tocopherols, Eastman Chemical Products. Inc , as Tenox GT-l/GT-2, and butylated hydroxyanisole, Eastman Chemical Products, Inc .
  • BHA long chain esters (C8-C22) of gallic acid, e g . dodecyl gallate, Irganox® 1010. Irganox® 1035, Irganox® B 1 171, Irganox® 1425. Irganox® 3114, Irganox® 3125. and mixtures thereof, preferably Irganox® 3125. Irganox® 1425.
  • a preferred composition of the present invention comprises from about 0 1%>, preferably from about 5%, more preferably form about 10% to about 80%>, preferably to about 50%. more preferably to about 25% by weight, of a hydrophobic polyamine dispersant having the formula
  • w. x, and y have values which provide for a backbone prior to substitution of preferably at least about 1200 daltons. more preferably 1800 daltons
  • R 1 units are preferably alkyleneoxy units having the formula
  • the fabric softening embodiments of the compositions of the present invention may also optionally, but preferably comprise, one or more electrolytes for control of phase stability, viscosity, and/or clarity
  • electrolytes for control of phase stability, viscosity, and/or clarity
  • the presence of certain electrolytes inter aha calcium chloride, magnesium chloride may be key to insuring initial product clarity and low viscosity, or may affect the dilution viscosity of liquid embodiments, especially isotropic liquid embodiments
  • Isotropic or non-isotropic liquid fabric softener compositions can be introduced into the rinse phase of laundry operations via an article of manufacture designed to dispense a measured amount of said composition
  • the article of manufacture is a dispenser which delivers the softener active only during the rinse cycle
  • These dispensers are typically designed to allow an amount of water equal to the volume of softener composition to
  • the level of electrolyte is also influenced by other factors inter aha the type of fabric softener active, the amount of principal solvent, and the level and type of nonionic surfactant
  • t ⁇ ethanol amine derived ester quaternary amines suitable for use as softener actives according to the present invention are typically manufactured in such a way as to yield a distribution of mono-, di-, and t ⁇ - este ⁇ fied quaternary ammonium compounds and amine precursors Therefore, as in this example, the variability m the distribution of mono-, di-.
  • the formulator must consider all of the ingredients, namely, softener active, nonionic surfactant, and in the case of isotropic liquids, the principal solvent type and level, as well as level and identity of adjunct ingredients before selecting the type and or level of electrolyte
  • lonizable salts can be used examples of suitable salts are the hahdes of the Group IA and IIA metals of the Periodic Table of the elements, e g . calcium chloride, sodium chloride, potassium bromide, and lithium chloride
  • the lonizable salts are particularly useful during the process of mixing the ingredients to make the compositions herein, and later to obtain the desired viscosity
  • the amount of lonizable salts used depends on the amount of active ingredients used in the compositions and can be adjusted according to the desires of the formulator Typical levels of salts used to control the composition viscosity are from about 20 to about 10.000 parts per million (ppm), preferably from about 20 to about 5.000 ppm, of the composition
  • Alkylene polyammonium salts can be incorporated into the composition to give viscosity control in addition to or m place of the water-soluble, lonizable salts above.
  • these agents can act as scavengers, forming ion pairs with anionic detergent carried over from the mam wash, in the rinse, and on the fabrics, and can improve softness performance These agents can stabilized the viscosity over a broader range of temperature, especially at low temperatures, compared to the inorganic electrolytes
  • Specific examples of alkylene polyammonium salts include L-lysine. monohydrochlo ⁇ de and 1.5-d ⁇ ammomum 2-methyl pentanc dihydrochlo ⁇ de Cationic Charge Boosters
  • compositions or the present invention may optionally comprise one or more cationic charge boosters, especially to the rinse-added fabric softening embodiments of the present invention
  • ethanol is used to prepare many of the below listed ingredients and is therefore a source of solvent into the final product formulation
  • the formulator is not limited to ethanol. but instead can add other solvents inter aha hexyleneglycol to aid in formulation of the final composition This is especially true in clear, translucent, isotropic compositions
  • a preferred composition of the present invention comprises at least about 0 2%, preferably from about 0 2% to about 10%. more preferably from about 0 2% to about 5% by weight, of a cationic charge booster having the formula R2 Rl— N -R3 X ⁇ 4 wherein R0 R ⁇ R-0 and R ⁇ are each independently C1 -C22 alkyl, C3-C22 alkenyl. R ⁇ -Q- (CH2) m -. wherein R ⁇ is C]-C22 alkyl, and mixtures thereof, m is from 1 to about 6, X is an amon
  • R is C ⁇ -C22 alkyl, Cg-C22 alkenyl, and mixtures thereof, more preferably C j i-C j g alkyl. Ci j -C j g alkenyl. and mixtures thereof.
  • R ⁇ R- > 5 and R ⁇ are each preferably C ⁇ - C4 alkyl. More preferably each R R- > 5 and R ⁇ are methyl
  • R ⁇ is an alkyl or alkenyl moiety having from 1 to 22 carbon atoms, preferably the alkyl or alkenyl moiety when taken together with the Q unit is an acyl unit derived preferably derived from a source of triglyceride selected from the group consisting of tallow, partially hydrogenated tallow, lard, partially hydrogenated lard, vegetable oils and/or partially hydrogenated vegetable oils, such as, canola oil, safflower oil, peanut oil, sunflower oil, com oil, soybean oil. tall oil, rice bran oil, etc and mixtures thereof
  • R 5 -Q- is an oleoyl units and m is equal to 2
  • X is a softener compatible amon. preferably the amon of a strong acid, for example, chloride, bromide, methylsulfate. ethylsulfate. sulfate. nitrate and mixtures thereof more preferably chloride and methyl sulfate
  • a strong acid for example, chloride, bromide, methylsulfate. ethylsulfate. sulfate. nitrate and mixtures thereof more preferably chloride and methyl sulfate
  • a preferred embodiment of the present invention contains at least about 0 2%, preferably from about 0 2% to about 5%. more preferably from about 0 2% to about 2% by weight, of one or more polyviny 1 amines having the formula wherein y is from about 3 to about 10.000. preferably from about 10 to about 5.000. more preferably from about 20 to about 500 Polyvinyl amines suitable for use in the present invention are available from BASF
  • one or more of the polyvinyl amine backbone -NH2 unit hydrogens can be substituted by an alkyleneoxy unit having the formula
  • R* is C2-C4 alkylene.
  • R ⁇ is hydrogen, C J-C4 alkyl. and mixtures thereof, x is from 1 to 50
  • the polyvinyl amme is reacted first with a substrate which places a 2-propyleneoxy unit directly on the nitrogen followed by reaction of one or more moles of ethylene oxide to form a unit having the general formula
  • Polyvinyl amines are especially preferred for use as cationic charge booster in liquid fabric softening compositions since the greater number of amine moieties per unit weight provides substantial charge density
  • the cationic charge is generated in situ and the level of cationic charge can be adjusted by the formulator
  • a preferred composition of the present invention comprises at least about 0 2%, preferably from about 0 2% to about 10%. more preferably from about 0 2% to about 5% by weight, of a cationic charge booster having the formula
  • R is substituted or unsubstituted C2-C12 alkylene. substituted or unsubstituted C2-C12 hydroxyalkylene, each R is independently CJ-C4 alkyl. each R ⁇ is independently C1-C22 alkyl. C3-C22 alkenyl. R-0Q-(CH2 m -, wherein R ⁇ is C1 -C22 alkyl, C3-C22 alkenyl. and mixtures thereof, m is from 1 to about 6, Q is a carbonyl unit as defined heremabove. and mixtures thereof,
  • R is ethylene, Rl IS methyl or ethyl, more preferably methy l, at least one R ⁇ is preferably C 1-C alkyl, more preferably methyl Preferably at least one R ⁇ IS C J 1 -C22 alkyl, C 11 -C22 alkenyl. and mixtures thereof
  • the formulator may similarly choose R ⁇ to be a R-0Q-(CH2) m - moiety wherein R- is an alkyl moiety having from 1 to 22 carbon atoms, preferably the alkyl moiety when taken together with the Q unit is an acyl unit derived preferably derived from a source of trigl ceride selected from the group consisting of tallow, partially hydrogenated tallow, lard, partially hydrogenated lard, vegetable oils and/or partially hydrogenated vegetable oils, such as. canola oil. safflowcr oil. peanut oil, sunflower oil, com oil, soybean oil, tall oil, rice bran oil, etc and mixtures thereof
  • n Rl IS methyl, one R ⁇ units is methyl and the other R ⁇ unit is R- , -Q-(CH2) m - herein R 3 -Q- is an oleoyl unit and m is equal to 2
  • X is a softener compatible amon. preferably the amon of a strong acid, for example, chloride, bromide, methylsulfate, ethylsulfate. sulfate. nitrate and mixtures thereof, more preferably chloride and methyl sulfate Cationic Nitrogen Compounds
  • the fabric enhancement compositions of the present invention may optionally comprise from about 0 5%. preferably from about 1%> to about 10%. preferably to about 5%> by weight, of one or more cationic nitrogen containing compound, preferably a cationic compound having the formula R- -N + -( ⁇ R, h') 3 X
  • R is Cio-Cjg alkyl. each R is independently Cj-C alkyl, X is a water soluble amon. preferably R is Cn-C ⁇ . preferably R ! is methyl Preferred X is halogen, more preferably chlorine
  • Non-limiting examples of preferred cationic nitrogen compounds are N,N,N-t ⁇ methyl-N- dodecyl ammonium chloride, N,N-d ⁇ methyl-(2-hydroxyethyl)-N-dodecyl ammonium bromide, N.N- d ⁇ methyl-(2-hydroxyethyl)-N-tetradecyl ammonium bromide Suitable cationic nitrogen compounds are available ex Akzo under the tradenames Ethomeen T/15 ® , Secomine TA15 ® , and Ethoduomeen T/20 ®
  • composition may also comprises further optional like perfume, cyclodext ⁇ ns, chlorine scavengers, etc
  • the textile enhancement compositions of the present invention may be in any form inter aha liquid, granular, paste Depending upon the specific form of the textile enhancement composition the formulator may use different active combinations
  • the composition dispersion comprise a) from about 0 05% by weight, of a softening compound having a transition temperature of less than 30 °C, b) optionally less than about 25% by weight, of a principal solvent, preferably said principal solvent has a ClogP of from about 0 15 to about 1. c) optionally from about 0 001 % to about 90% by weight, of one or more dye fixing agents, d) optionally about 0 005% to about 1% by weight, of one or more crystal growth inhibitors.
  • e) optionally from about 0 01% to about 8% by weight, of a polyolefin emulsion or suspension.
  • f) optionally from about 0 01% to about 0 2% by weight, of a stabilizer.
  • g) optionally from about 0 5% to about 5% by weight, of a cationic surfactant, and h) the balance liquid carrier and optional adjunct ingredients
  • compositions of the present invention can be applied by the manufacturer at any point, inter aha. while weaving the fabric, after manufacture into an article of apparel
  • the formulations may be applied by any means, inter aha. by dipping of the fabric, squeezing via roller, padding or sprayed
  • the dispersion of the composition can be pre-formed prior to application to the fiber or fabric by prior mixing with water or can formed upon treatment by dilution with water
  • the present invention further relates to a method for providing textile and fabric enhancement benefits, preferably to clothing, said method comprising the step of contacting textiles or fabric with the softening compound having a transition temperature of less than 30 °C or dispersion thereof or compositions of the present invention, in industry, preferably at a point during manufacture or after fashioning into an article of apparel, said composition comprising a) from about 0 05%) by weight, of a softening compound having a transition temperature of less than 330 °C, b) optionally less than about 25% by weight, of a principal solvent, preferably said principal solvent has a ClogP of from about 0 15 to about 1.
  • compositions according to the present invention optionally from about 0 001% to about 90% by weight, of one or more dye fixing agents, d) optionally about 0 005% to about 1%> by weight, of one or more crystal growth inhibitors.
  • e) optionally from about 0 01% to about 8% by weight, of a polyolefin emulsion or suspension, ) optionally from about 0 01 % to about 0 2% by weight, of a stabilizer, g) optionally from about 0 5% to about 5% by weight, of a cationic surfactant, and h) the balance carriers and adjunct ingredients.
  • acyloxyethyl)(2-hydroxyethyl)methyl ammonium methyl sulfate where the acyl group is derived from partially hydrogenated canola fatty acid. 85% active commercially available under the tradename Rewoquat V3620 from Witco.
  • Di(acyloxyethyl) dimethyl ammonium chloride where the acyl group is derived from partially hydrogenated canola fatty acid, 85%> active as described in WO97/03169.
  • Neodol 91-8 ex Shell.

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Abstract

The present invention relates to a textile enhancement composition comprising: a) from about 0.05% by weight, of a softening compound having a transition temperature of less than 30 °C; b) otpionally less than about 25 % by weight, of a principal solvent, preferably said principal solvent has a ClogP of from about 0.15 to about 1; c) optionally from about 0.001 % to about 90 % by weight, of one or more dye fixing agents; d) optionally about 0.005 % to about 1 % by weight, of one or more crystal growth inhibitors; e) optionnally from about 0.01 % to about 8 % by weight, of a polyolefin emulsion or suspension; f) optionally from about 0.01 % to about 0.2 % by weight, of a stabilizer; g) optionally from about 0.5 % to about 5 % by weight, of a cationic surfactant; and h) the balance being a liquid carrier and optional adjunct ingredients. The textile enhancement dispersion compositions are suitable for use in an industrial textile manufacturing process, in particular at any point during the manufacture and fabrication process including after fashioning fabric into an article of manufacture, preferably an article of apparel.

Description

FABRIC ENHANCEMENT TREATMENT
FIELD OF THE INVENTION
The present invention relates to textile and fabric treatment systems which can be suitably applied by the processor or manufacturer of textiles The treatment systems of the present invention provide a wide range of enduring fabric benefits, mter aha, water absorbency. softness, anti-static, anti-abrasion, without the necessity to react with the fabric material itself
BACKGROUND OF THE INVENTION
Cotton, rayon and other cellulose based fabrics, including polyester blends, are well suited for apparel Cellulosic fabric is relatively robust to the rigors of mechanical abrasion whether due to wearing of the fabric or whether due to the laundering process Cotton is hydrophihc, efficiently absorbing perspiration and providing a "breathable" feel to the wearer Cotton is easily fabricated and dyed
Manufacturers of cotton and other cellulosic material-comprising apparel, aside from dyeing, apply fabric finishes Accordingly, manufacturers of fabric, especially fabric which is fashioned into an article of apparel, have developed various means for providing the fabric with lasting appearance benefits Among the benefits which have been of importance is the softness This is typically accomplished by reacting the native fabric, cotton, inter aha. with softening compounds such as polymers (e g organo-sihcones). emulsions of oils or waxes (e g polyethylene emulsion) or surface-active agents Because of the finishing with such a type of softening compound, treated fibers or fabric exhibit a soft feel to the user However, this softness benefit is often to the detriment of the water-absorbency Hence, it is well known to the consumer that newly bought towels do not give a good absorbency of the water and therefore require at least one domestic wash before providing a good water-absorbency Accordingly, there is a need for a treatment suitable for industry that provides a good water-absorbency while still not being detrimental to the softness performance
Moreover, although many agents which provide the desired benefits can be added during the domestic laundry process on the final garment, they must compete for the fabric surface with surfactants, soil release agents, etc and are therefore not necessarily uniformly or effectively applied
There is a long felt need m the art for a textile or fabric enhancement system which is suitably fabric substantive and which can be applied by the manufacturer or the fabricator to native fabric or to fabric after formation of an article of manufacture, which provides water-absorbency. softness, anti-static, and anti-abrasion benefits SUMMARY OF THE INVENTION
The present invention meets the aforementioned needs in that it has been surprisingly discovered that textile finishes which provide enhanced fabric benefits can be applied by the fabric manufacturers or the garment fabricators to fabric, preferably cellulosic fiber containing fabric The finishes can be applied to the treated material at any point in the processing of the fabric
The first aspect of the present invention relates to the treatment of textiles or fabric durmg any point in the manufacture process including after fabrication into an article of manufacture, inter alia, articles of apparel The present invention relates to textile enhancement dispersion compositions comprising a) from about 0 05% b\ weight, of a softening compound having a transition temperature of less than 30 °C, b) optionally less than about 25% by weight, of a principal solvent, preferably said principal solvent has a ClogP of from about 0 15 to about 1 , c) optionally from about 0 001 % to about 90% by weight, of one or more dye fixing agents. d) optionally about 0 005% to about 1 % by weight, of one or more crystal growth inhibitors, e) optionally from about 0 01 % to about 8% by weight, of a polyolefin emulsion or suspension, f) optionally from about 0 01% to about 0 2% by weight, of a stabilizer, g) optionally from about 0 5% to about 5% by weight, of a catiomc surfactant, and h) the balance being a liquid carrier and optional adjunct ingredients
The present invention further relates to a method for providing textile and fabric enhancement benefits, said method comprising the step of contacting textiles or fabric with the softening compound according to the invention or dispersion thereof or compositions of the present invention in industry, in particular at a point during manufacture or after fashioning into an article of apparel
These and other objects, features, and advantages will become apparent to those of ordinary skill in the art from a reading of the following detailed description and the appended claims All percentages, ratios and proportions herein are by weight, unless otherwise specified All temperatures are in degrees Celsius (° C) unless otherwise specified All documents cited are in relevant part, incorporated herein by reference
DETAILED DESCRIPTION OF THE INVENTION
The textile enhancement compositions of the present invention are applied to fabric or textiles and, because they are fabric substantive, remain on the fabric preventing one or more pejorative effects which occur during fabric life
The following is a description of the essential elements of the present invention A Softening compound having a transition temperature of less than 30 °C
The fabric care compositions of the present invention typically comprise at least about 0 05%, preferably at least about 1%. more preferably from about 10%>. more preferably from about 20%) to about 80%, more preferably to about 60%. most preferably to about 45% by weight, of the composition of one or more fabric softener actives having a transition temperature of less than 30C, preferably below 15C Fabric softening actives are an essential element of the invention compositions
By "transition temperature", it is meant the temperature at which the physical state of the softener active changes from crystalline into liquid crystalline when in contact with water, as measured by e g running Differential Scanning Caloπmetry with a DSC apparatus ex TA Instruments, on a dispersion of the softener active m water
The preferred fabric softening actives according to the present invention are amines havmg the formula
(R) N- (CH^-Q-R1
3-m quaternary ammonium compounds having the formula
and mixtures thereof, wherein each R is independently Ci -Cg alkyl. Cj-Cg hydroxyalkyl. benzyl, and mixtures thereof. R* is preferably Ci 1-C22 linear alkyl. C\ 1-C22 branched alkyl, C\ 1-C22 linear alkenyl. Cj 1-C22 branched and mixtures thereof, Q is a carbonyl moiety independently selected from the group consisting of esters, secondary amides, tertiary amides, carbonate, mono carbonyl substituted alkylene, poly carbonyl substituted alkylene. and mixtures thereof, preferably ester or secondary amide. X is a softener compatible a on. the index m has a value of from 1 to 3. the index n has a value of from 1 to 4. preferably 2 or 3. more preferably 2
In the above fabric softener example, the unit -OC(0)Rl represents a fatty acyl unit which is typically derived from a triglyceride source The triglyceride source is preferably derived from tallow, partially hydrogenated tallow, lard, partially hydrogenated lard, vegetable oils and/or partially hydrogenated vegetable oils, such as, canola oil. safflower oil, peanut oil, sunflower oil, corn oil, soybean oil. tall oil. rice bran oil. etc and mixtures of these oils Preferably, the source of triglyceride is selected from canola oil. partially hydrogenated canola oil. and mixtures thereof The following are non-limiting examples of preferred softener actives according to the present invention
N.N-dι(oleyl-oxy-ethyl)-N.N-dιmethyl ammonium chloride, N,N-dι(canolyl-oxy-ethyl)-N.N-dιmethyl ammonium chloride, N.N-dι(oleyl-oxy-ethyl)-N-meth\ 1. N-(2-hydroxyethyl) ammonium methyl sulfate, N,N-dι(canolyl-oxy-ethyl)-N-methyl, N-(2-hydroxyethyl) ammonium methyl sulfate, N,N-dι(oleylamιdoethyl)-N-meth\l, N-(2-hydroxyethyl) ammonium methyl sulfate, N.N-dι(2-oleyloxy-2-oxo-ethyl)-N.N-dιmethyl ammonium chloride, N.N-dι(2-canolyloxy-2-oxo-eth , l)-N.N-dιmethyl ammonium chloride. N,N-dι(2-oleyloxyethylcarbonyloxyethyl)-N.N-dιmethyI ammonium chloride, N.N-dι(2-canolyloxyethylcarbon\ loxyethyl)-N.N-dιmeth\ 1 ammonium chloride. N-(2-oleyloxy-2-eth> l)-N-(2-ole\ loxy-2-o\o-ethyl)-N.N-dιmethyl ammonium chloride. N-(2-canolyloxy-2-ethyl)-N-(2-canolyloxy-2-oxo-ethyl)-N.N-dιmethyl ammonium chloride. N.N.N-tπ(oleyl-oxy-ethyl)-N-methyl ammonium chloride. N,N,N-tπ(canolyl-oxy-ethyl)-N-methyl ammonium chloride. N-(2-oleyloxy-2-oxoethyl)-N-(oleyl)-N.N-dιmethyl ammonium chloride, N-(2-canolyloxy-2-oxoethyl)-N-(canolyl)-N,N-dιmethyl ammonium chloride. 1.2-dιoleylox\ -3-N,N.N-tπmethylammonιopropane chloride, and l,2-dιcanolyloxy-3-N,N.N-tπmethylammonιopropane chloride, and mixtures of the above actives
A typical description of these softening ingredients is given in WO 98/47991 as well as in s described in WO97/03169 page 17-24 A further description of fabric softening agents useful herein are descπbed m U S 5.643.865 Mermelstem et al . issued July 1. 1997. U S 5.622.925 de Buzzaccaπni et al . issued April 22. 1997. U S 5.545.350 Baker et al , issued August 13, 1996, U S 5.474.690 Wahl et al , issued December 12. 1995. U S 5.417.868 Turner et al . issued January 27. 1994. U S 4.661.269 Tπnli et al . issued April 28. 1987. U S 4.439.335 Bums, issued March 27. 1984. U S 4.401.578 Verbruggen. issued August 30. 1983. U S 4.308.151 Cambre. issued December 29, 1981. U S 4.237.016 Rudkin et al . issued October 27. 1978, U S 4.233.164 Davis, issued November 11, 1980. U S 4.045.361 Watt et al . issued August 30. 1977. U S 3.974,076 Wiersema et al , issued August 10. 1976. U S 3.886.075 Bernadino. issued May 6. 1975, U S 3.861.870 Edwards et al . issued January 21 1975. and European Patent Application publication No 472.178, b> Yamamura et al . all of said documents being incorporated herein by reference
Still another essential element of the mvention is a liquid carrier Indeed, by use of this carrier, a dispersion is obtained Liquid Carrier
Another essential ingredient is a liquid carrier Suitable liquid carriers are selected from water, organic solvents and mixtures thereof The liquid carrier employed in the instant compositions is preferably at least primarily water due to its low cost relative availability , safety , and environmental compatibility The level of water in the liquid carrier is preferably at least 50%. most preferably at least 60%. by weight of the carrier Mixtures of water and low molecular weight, e g . <200. organic solvent, e g . lower alcohol such as ethanol. propanol. isopropanol or butanol are useful as the carrier liquid Low molecular weight alcohols include monoh dπc. dihydπc (glycol. etc ) tπhydπc (glycerol. etc ). and higher polyhydπc (pol ols) alcohols
Preferably, the obtained dispersion will have a particle size of less than 100 micrometers, as measured by laser diffraction (for example, a Malvern MastcrsizcrS . from Malvern Instruments)
OPTIONAL INGREDIENTS
The fabric conditioning and fabric appearance compositions of the present invention, m addition to the softening compound and liquid carrier described herein above, may optionally comprise the following optional ingredients Principal solvent
The compositions of the present invention, preferably the isotropic liquid embodiments thereof, may also optionally comprise a principal solvent The level of principal solvent present in the compositions of the present invention is typically less than about 95%, preferably less than about 50%. more preferably less than about 25%. most preferably less than about 15% by weight Some embodiments of isotropic liquid embodiments of the present invention may comprise no principal solvent but may substitute instead a suitable nonionic surfactant
The principal solvents of the present invention are primarily used to obtain liquid compositions having sufficient clarity and viscosity Principal solvents must also be selected to minmize solvent odor impact in the composition For example, isopropyl alcohol is not an effective principal solvent in that it does not serve to produce a composition having suitable viscosity Isopropanol also fails as a suitable principal solvent because it has a relatively strong odor
Principal solvents are also selected for their ability to provide stable compositions at low temperatures, preferably compositions comprising suitable principal solvents are clear down to about 4° C and have the ability to fully recover their clarity if stored as low as about 7° C
The principal solvents according to the present invention are selected base upon their octanol/water partition coefficient (P) The octanol/water partition coefficient is a measure of the ratio of the concentrations of a particular principal solvent in octanol and water at equilibrium The partition coefficients are conveniently expressed and reported as their logarithm to the base 10, logP
The logP of many principal solvent species has been reported, for example, the Ponmona92 database, available from Daylight Chemical Information Systems. Inc (Daylight CIS), contains man . along w ith citations to the original literature
However, the logP values are most conveniently calculated by the "CLOGP" program, also available from Daylight CIS This program also lists experimental logP values when they are available in the Pomona92 database The "calculated logP" (ClogP) is detemiined by the fragment approach of Hansch and Leo ( cf . A Leo. m Comprehensive Medicinal Chemistry, Vol 4. C Hansch. P G Sammens. J B Taylor and C A Ransden. Eds . p 295. Pergamon Press, 1990, incorporated herein by reference) The fragment approach is based on the chemical structure of each HR species, and takes into account the numbers and types of atoms, the atom connectivity, and chemical bonding ClogP values are the most reliable and widely used estimates for octanol water partitioning It \\ ill be understood by those skilled m the art that experimental log P values could also be used Experimental log P values represent a less preferred embodiment of the invention Where experimental log P values are used, the one hour log P values are preferred Other methods that can be used to compute ClogP include, e g . Cπppen's fragmentation method as disclosed in J Chem Inf Comput Set . 27a.21 (1987). Viswanadhan's fragmentation method as disclosed in J Chem Inf Comput S . 29. 163 (1989). and Broto's method as disclosed m Eur J Med Chem - Chim Theor , 19. 71 (1984)
The principal solvents suitable for use in the present invention are selected from those having a ClogP of from about 0 15 to about 1, preferably from about 0 15 to about 0 64, more preferably from about 0 25 to about 0 62. most preferably form about 0 4 to about 0 6 Preferably the principal solvent is at least to some degree an asymmetric molecule, preferably having a melting, or solidification point which allows the principal solvent to be liquid at or near room temperature Low molecular weight principal solvents may be desirable for some embodiments More preferred molecules are highly asymmetrical
A further description of principal solvents suitable for use in the isotropic liquid compositions of the present invention are thoroughly described in WO 97/03169 ''Concentrated, Stable Fabric Softening Composition" , published January 30, 1997 and assigned to the Procter & Gamble Co , WO 97/03170 "Concentrated. Water Dispersible, Stable, Fabric Softening Composition", published January 30, 1997 and assigned to the Procter & Gamble Co . and WO 97/34972 "Fabric Softening Compound/Composition", published September 25. 1997 and assigned to the Procter & Gamble Co all included herein by reference Dve fixing agent
Dye fixing agent is an optional component of the invention composition Dye fixing agents, or "fixatives", are well-known, commercially available materials which are designed to improve the appearance of dyed fabrics by minimizing the loss of dye from fabrics due to w ashing Not included within this definition are components which are fabric softeners or those described hereinafter as amino-functional polymers
Many dye fixing agents are cationic. and are based on various quatemized or otherwise cationically charged organic nitrogen compounds Cationic fixatives are available under various trade names from several suppliers Representative examples include CROSCOLOR PMF (July 1981. Code No 7894) and CROSCOLOR NOFF (January 1988. Code No 8544) from Crosfield. INDOSOL E-50 (February 27, 1984. Ref No 6008 35 84, polyethyleneamine-based) from Sandoz. SANDOFIX TPS. which is also available from Sandoz and is a preferred polycationic fixative for use herein and SANDOFIX SWE (cationic resinous compound), REWIN SRF. REWIN SRF-0 and REWIN DWR from CHT-Beithch GMBH. Tinofix® ECO. Tmofix®FRD and Solfin® available from Ciba-Geigy Other cationic dye fixing agents are described in "Aftertreatments for improving the fastness of dyes on textile fibres" by Christopher C. Cook (REV. PROG. COLORATION Vol. 12, 1982). Dye fixing agents suitable for use in the present invention are ammonium compounds such as fatty acid - diamine condensates e.g. the hydrochloride. acetate, metosulphate and benzyl hydrochloride of oleyldiethyl aminoethylamide. oleylmethyl-dicthylenediaminemethosulphate. monostearyl-ethylene diaminotπmethylammonium methosulphate and oxidized products of tertiary amines; derivatives of polymeric alkyldiamines, polyamine-cyanuric chloride condensates and animated glycerol dichlorohydrins.
Preferred dye fixing agents are the cellulose reactive dye fixing agents.
The term "cellulose reactive dye fixing agent" is defined herein as "a dye fixative agent which reacts with the cellulose fibers upon application of heat or upon a heat treatment either m situ or by the formulator". The cellulose reactive dye fixing agents suitable for use in the present invention can be defined by the following test procedure.
Cellulose Reactivity Test (CRT)
Four pieces of fabric which are capable of bleeding their dye (e.g. 10 x 10 cm of knitted cotton dyed with Direct Red 80) are selected. Two swatches are used as a first control and a second control, respectively. The two remaining swatches are soaked for 20 minutes in an aqueous solution containing 1% (w/w) of the cellulose reactive dye fixing agent to be tested. The swatches are removed and thoroughly dried. One of the treated swatches which has been thoroughly dried, is passed ten times through an ironing calender which is adjusted to a ''linen fabric" temperature setting The first control swatch is also passed ten times through an ironing calender on the same temperature setting.
All four swatches ( the two control swatches and the two treated swatches, one of each which has been treated by the ironing calender) are washed separately in Launder-O-Meter pots under typical conditions with a commercial detergent used at the recommended dosage for 'Λ hour at 60°C. followed by a thorough rinsing of 4 times 200 ml of cold water and subsequently line dried.
Color fastness is then measured by comparing the DE values of a new untreated swatch with the four swatches which have undergone the testing. DE values, the computed color difference, is defined in ASTM D2244. In general. DE values relate to the magnitude and direction of the difference between two psychophysical color stimuli defined by tristimulus values, or by chromaticitv coordinates and luminance factor, as computed by means of a specified set of color- difference equations defined in the CIE 1976 CIELAB opponent-color space, the Hunter opponent- color space, the Fπele-Mac Adam-Chickeπng color space or any equivalent color space For the purposes of the present invention, the lower the DE value for a sample, the closer the sample is to the un-tested sample and the greater the color fastness benefit
As the test relates to selection or a cellulose reactive dye fixing agent, if the DE value for the swatch treated in the ironing step has a value which is better than the two control swatches, the candidate is a cellulose reactive dye fixing agent for the purposes of the invention
Typically cellulose reactive dye fixing agents are compounds which contain a cellulose reactive moiety, non limiting examples of these compounds include halogeno-tπazmes, vinyl sulphones. epichlorhydπne derivatives, hydroxyethylene urea derivatives, formaldehyde condensation products, polycarboxylates, glyoxal and glutaraldehyde derivatives, and mixtures thereof Further examples can be found in "Textile Processing and Properties", Tyrone L Vigo. at page 120 to 121. Elsevier (1997). which discloses specific electrophihc groups and their corresponding cellulose affinity
Preferred hydroxyethylene urea derivatives include dimethyloldihydroxyethylene. urea, and dimethyl urea glyoxal Preferred formaldehyde condensation products include the condensation products derived from formaldehyde and a group selected from an amino-group. an lmino-group, a phenol group, an urea group, a cyanamide group and an aromatic group Commercially available compounds among this class are Sandofix WE 56 ex Clariant. Zetex E ex Zeneca and Levogen BF ex Bayer Preferred polycarboxylates derivatives include butane tetracarboxihc acid derivatives, citric acid derivatives, polyacrylates and derivatives thereof A most preferred cellulosic reactive dye fixing agents is one of the hydroxyethylene urea derivatives class commercialized under the tradename of Indosol CR ex Clariant Still other most preferred cellulosic reactive dye fixing agents are commercialized under the tradename Rewin DWR and Rewin WBS ex CHT R Beithch
The compositions of the present invention optionally comprise from about 0 01%, preferably from about 0 05%). more preferably from about 0 5%o to about 50%. preferably to about 25%), more preferably to about 10%> by weight, most preferably to about 5% by weight, of one or more dye fixing agents Crystal Growth Inhibitor
The compositions of the present invention optionally comprise from about 0 005%. preferably from about 0 5%. more preferably from about 0 l%o to about 1%, preferably to about 0 5%), more preferably to about 0 25%. most preferably to about 0 2% by weight, of one or more crystal growth inhibitors The following "Crystal Growth Inhibition Test" is used to determine the suitability of a material for use as a crystal growth inhibitor Crystal Growth Inhibition Test (CGIT)
The suitability of a material to serve as a crystal growth inhibitor according to the present invention can be determined by evaluating in vitro the growth rate of certain inorganic micro- crystals The procedure of Nancollas et al , described in "Calcium Phosphate Nucleation and Growth in Solution". Prog Crystal Growth Charact . Vol 3. 77-102, (1980). incorporated herein by reference, is a method which is suitable for evaluating compounds for their crystal growth inhibition The graph below serves as an example of a plot indicating the time delay (t-lag) in crystal formation afforded by a hypothetical crystal growth inhibitor
The observed t-lag provides a measure of the compound's efficiency with respect to delaying the growth of calcium phosphate crystal The greater the t-lag. the more efficient the crystal growth inhibitor
Exemplary Procedure
Combine in a suitable vessel. 2 1M KC1 (35 mL), 0 0175M CaCl2 (50mL), 0 01M KH2P04 (50mL). and de-ionized water (350mL) A standard pH electrode equipped with a Standard Calomel Reference electrode is inserted and the temperature adjusted to 37° C while purging of the solution of oxygen Once the temperature and pH are stabilized, a solution of the cr stal growth inhibitor to be test is then added A typical inhibitor test concentration is 1 x 10 6 M The solution is titrated to pH 7 4 with 0 05 M KOH The mixture is then treated with 5 mL s of a hydroxyapatite slurry The hydroxyapatite slurry can be prepared by digesting Bio-Gel® HTP hydroxyapatite powder (100 g) in 1 L of distilled water the pH of which is adjusted to 2 5 by the addition of sufficient 6N HC1 and subsequently heating the solution until all of the hydroxyapatite is dissolved (heating for several days may be necessary) The temperature of the solution is then maintained at about 22° C while the pH is adjusted to 12 by the addition of a solution of 50% aqueous KOH Once again the solution is heated and the resulting slurry is allowed to settle for two days before the supernatant is removed 1 5 L of distilled water is added, the solution stirred, then after settling again for 2 days the supernatant is removed This rinsing procedure is repeated six more time after which the pH of the solution is adjusted to neutrality using 2N HC1 The resulting slurry can be stored at 37°C for eleven months
Crystal growth inhibitors which are suitable for use in the present mvention have a t-lag of at least 10 minutes, preferably at least 20 minutes, more preferably at least 50 minutes, at a concentration of 1 x 10"6M Crystal growth inhibitors are differentiated form chelating agents by the fact that crystal growth inhibitors have a low binding affinity of heavy metal ions, I e , copper For example, crystal growth inhibitors have an affinity for copper ions in a solution of 0 1 ionic strength when measured at 25° C. of less than 15, preferably less than 12
The preferred crystal growth inhibitors of the present invention are selected from the group consisting of carboxyhc compounds, organic diphosphonic acids, and mixtures thereof The following are non-limitmg examples of preferred crystal growth inhibitors
Carboxyhc Compounds
Non-limiting examples of carboxyhc compounds which serve as crystal growth inhibitors include glycohc acid, phytic acid, poly carboxyhc acids, polymers and co-polymers of carboxyhc acids and polycarboxyhc acids, and mixtures thereof The inhibitors may be in the acid or salt form Preferably the polycarboxy he acids comprise materials having at least two carboxyhc acid radicals which are separated by not more than two carbon atoms (e g , methyl ene units) The preferred salt foπns include alkali metals, lithium, sodium, and potassium, and alkanolammomum The polycarboxylates suitable for use m the present invention are further disclosed in U S 3, 128.287. U S 3.635.830, U S 4.663.071. U S 3.923.679. U S 3.835.163. U S 4.158,635. U S 4.120.874 and U S 4,102.903. each of which is included herein by reference
Further suitable polycarboxylates include ether hydroxypolycarboxylates, polyacrylate polymers, copolymers of maleic anhydride and the ethylene ether or vinyl methyl ethers of acrylic acid Copolymers of 1.3.5-tπhydroxybenzene, 2. 4. 6-tπsulphonιc acid, and carboxymethyloxysuccinic acid are also useful Alkali metal salts of polyacetic acids, for example, ethylenediamine tetraacetic acid and nitrilotπacetic acid, and the alkali metal salts of polycarboxylates, for example, mel tic acid, succimc acid, oxydisuccimc acid, polymaleic acid, benzene 1,3,5-tπcarboxyhc acid, carboxymethyloxysuccinic acid, are suitable for use m the present invention as crystal growth inhibitors
The polymers and copolymers which are useful as crystal growth inhibitors have a molecular weight which is preferably greater than about 500 daltons to about 100.000 daltons, more preferably to about 50,000 daltons
Examples of commercially available materials for use as crystal growth inhibitors include, polyacrylate polymers Good-Rite® ex BF Goodrich. Acrysol® ex Rohm & Haas. Sokalan® ex BASF, and Norasol® ex Norso Haas Preferred are the Norasol® polyacrylate polymers, more preferred are Norasol® 4 ION (MW 10.000) and Norasol® 440N (MW 4000) which is an ammo phosphonic acid modified polyacrylate polymer, and also more preferred is the acid fonn of this modified polymer sold as Norasol® QR 784 (MW 4000) ex Norso-Haas
Polycarboxylate crystal growth inhibitors include citrates, e g , citric acid and soluble salts thereof (particularly sodium salt), 3.3-dιcarboxy-4-oxa-1.6-hexanedιoates and related compounds further disclosed in U S 4.566.984 incorporated herein by reference. C5-C20 alkyl, C5-C20 alkenyl succimc acid and salts thereof, of which dodecenyl succinate, lauryl succinate, myπstyl succ ate, palmityl succinate. 2-dodecenylsuccιnate, 2-pentadecenyl succinate. are non-hmitmg examples Other suitable polycarboxylates are disclosed in U S 4.144.226. U S 3.308.067 and U S 3.723.322. all of which are incorporated herein by reference
Organic Phosphonic Acids Organic diphosphonic acid are also suitable for use as crystal growth inhibitors For the purposes of the present invention the tenn ' organic diphosphonic acid" is defined as "an organo- diphosphonic acid or salt which does not comprise a nitrogen atom" Preferred organic diphosphonic acids include Cj-C diphosphonic acid, preferably C2 diphosphonic acid selected from the group consisting of ethylene diphosphonic acid, α-hydroxy -2 phenyl ethyl diphosphonic acid, methylene diphosphonic acid, vιnyhdene-1.1 -diphosphonic acid . 1.2-dιhydroxyethane-l,l- diphosphomc acid, hydroxy-ethane 1 , 1 diphosphonic acid, the salts thereof, and mixtures thereof More preferred is hydroxyethane-1.1 -diphosphonic acid (HEDP) A preferred is phosphonic acid is 2-phosphonobutane-1.2.4-tπcarboxyhc acid available as BAYHIBIT AM® ex Bayer Fabric Abrasion Reducing Polymers The herein disclosed polymers provide for decreased fabric abrasion as well as providing a secondary benefit related to dye transfer inhibition The compositions of the present invention comprise from about 0 01%, preferably from about 0 1%> to about 20%), preferably to about 10% by weight, of a fabric abrasion reducing polymer
The prefered reduced abrasion polymers of the present invention are water-soluble polymers For the purposes of the present invention the term "water-soluble" is defined as "a polymer which when dissolved in water at a level of 0 2% by weight, or less, at 25° C, forms a clear, isotropic liquid"
The fabric abrasion reducing polymers useful in the present invention have the formula wherein the unit P is a polymer backbone which comprises units which are homopolymeπc or copolymeric D units are defined herein below For the purposes of the present invention the term "homopolymeπc" is defined as "a polymer backbone which is comprised of units having the same unit composition, I e , formed from polymerization of the same monomer For the purposes of the present invention the term "copolymeric"' is defined as "a polymer backbone which is comprised of units having a different unit composition, 1 e , formed from the polymerization of two or more monomers"
P backbones preferably comprise units having the foπnula
[CR2-CR2]- or l(CR2) -L] — wherein each R unit is independently hydrogen. C1-C12 alkyl. C6-C]2 aryl. and D units as described herein below, preferably Cj-C4 alkyl
Each L unit is independently selected from heteroatom-contaming moieties, non-hmitmg examples of which are selected from the group consisting of
R' O 0 O O
II II II II
-N — -O -0— c — -c— 0- -o— c— O- -c-
0 0 ! I I 0 0
I I I 0
1 I I
1 1 I I 1 I 1 1 1
— s- s — S — 0— s — — S— 0 — — 0— s— 0
II I I I I II 0 0 0 0 polysiloxane having the formula
units which have dye transfer inhibition activity
R4 O o
II I I
— N — — N- -c- -C— -
0 RJ RJ and mixtures thereof, wherein R is hydrogen, C]-Cι2 alkyl. C6-C12 aryl. and mixtures thereof R2 is Cj-C]2 alkyl. Cι-Cj2 alkoxy, C6-Cj aryloxy. and mixtures thereof, preferably methyl and methoxy R3 is hydrogen Cj-Cι2 alkyl, C6-C12 aryl, and mixtures thereof, preferably hydrogen or Cj-C4 alkyl, more preferably hydrogen R4 is Cι-C]2 alkyl, C6-C1 aryl, and mixtures thereof
The backbones of the fabric abrasion reducing polymers of the present invention comprise one or more D units which are units which comprise one or more units which provide a dye transfer inhibiting benefit The D unit can be part of the backbone itself as represented in the general formula
[-P(D)m-]n or the D unit may be incorporated into the backbone as a pendant group to a backbone unit having for example, the formula [CR-CR2] or [(CR0- L1 —
D D
However, the number of D units depends upon the formulation For example, the number of D units will be adjusted to provide water solubility of the polymer as well as efficacy of dye transfer inhibition while providing a polymer which has fabric abrasion reducing properties The molecular weight of the fabric abrasion reducing polymers of the present invention are from about 500, preferably from about 1.000. more preferably from about 100.000 most preferably from 160.000 to about 6,000.000, preferably to about 2.000,000. more preferably to about 1.000.000, yet more preferably to about 500.000. most preferably to about 360.000 daltons Therefore the value of the index n is selected to provide the indicated molecular weight, and providing for a water solubility of least 100 ppm, preferably at least about 300 ppm. and more preferably at least about 1.000 ppm m water at ambient temperature which is defined herein as 25 °C
Polymers Comprising Amide Units
Non-limiting examples of preferred D units are D units which comprise an amide moiety Examples of polymers wherein an amide unit is introduced into the polymer via a pendant group includes polyvinylpyrrohdone having the formula
n
polyvinyloxazohdone having the formula
polyvinylmethyloxazohdone having the formula
polyacrylamides and N-substituted pol acrylamidcs having the foπnula
[CH-CH2]n
C=0
I ,
N(R)2 wherein each R' is independently hydrogen. Cι-C6 alkyl. or both R' units can be taken together to form a ring comprising 4-6 carbon atoms, polymethacrylamides and N-substituted polymethacrylamides having the general formula CH3
I [C-CH2]n
C=0
I , N(R)2 wherein each R' is independently hydrogen. Cj-C6 alkyl. or both R' units can be taken together to form a ring comprising 4-6 carbon atoms. poly(N-acrylylglycιnamιde) having the fonnula
[CH-CH2]n
C=0 o
I I I
NH— CH2-C— N(R')2 wherein each R" is independently hydrogen, C]-C6 alkyl. or both R" units can be taken together to form a ring comprising 4-6 carbon atoms. poly(N-methacrylylglvcmamιde) having the formula
CH3
I [C-CH2]n
C=0 o
I I I
NH— CH2-C— N(R')2 wherein each R" is independently hydrogen. Cj-C6 alkyl. or both R" units can be taken together to form a ring comprising 4-6 carbon atoms, polyvinylurethanes having the fonnula
[CH-CH2ln
0
I
C=0
I N(R')2 wherein each R" is independently hydrogen. Cj-C6 alkyl. or both R' units can be taken together to form a ring comprising 4-6 carbon atoms
An example of a D unit wherein the nitrogen of the d e transfer inhibiting moiety is incorporated into the polymer backbone is a poly(2-ethvl-2-oxazohne) having the formula
[CH2-CH2-N]n
C=0 I CH2CH3 wherein the index n indicates the number of monomer residues present
The fabric abrasion reducing polymers of the present invention can comprise any mixture of dye transfer inhibition units which provides the product with suitable properties The preferred polymers which comprise D units which are amide moieties are those which have the nitrogen atoms of the amide unit highly substituted so the nitrogen atoms are in effect shielded to a varying degree by the surrounding non-polar groups This provides the polymers with an amphiphilic character Non-hmitmg examples include polyvmyl-pyrrohdones, polyvinyloxazohdones. N.N-disubstituted polyacrylamides. and N.N-disubstituted polymethacrylamides A detailed description of physico-chemical properties of some of these polymers are given in "Water-Soluble Synthetic Polymers Properties and Behavior". Philip Mohneux. Vol I, CRC Press. (1983) included herein by reference
The amide containing polymers may be present partially hydrolyzed and/or crosslmked forms A preferred polymeric compound for the present mvention is polyvinylpyrrohdone (PVP) This polymer has an amphiphilic character with a highly polar amide group conferring hydrophihc and polar-attracting properties, and also has non-polar methylene and metlnne groups, in the backbone and/or the ring, conferring hydrophobic properties The rings may also provide planar alignment with the aromatic rings in the dye molecules PVP is readily soluble in aqueous and organic solvent systems PVP is available ex ISP. Wayne. New Jersey, and BASF Corp , Parsippany. New Jersey , as a powder or aqueous solutions in several viscosity grades, designated as. e g . K-12. K-15. K-25. and K-30 These K-values indicate the viscosity average molecular weight, as shown below
PVP K-12, K-15. and K-30 are also available ex Polysciences. Inc Warπngton. Pennsylvania. PVP K-15. K-25. and K-30 and poly(2-ethyl-2-oxazohne) are available ex Aldπch Chemical Co . Inc . Milwaukee. Wisconsin PVP K30 (40.000) through to K90 (360.000) are also commercially available BASF under the tradename Luviskol or commercially available ex ISP Still higher molecular PVP like PVP 1 3 MM. commercially available ex Aldπch is also suitable for use herein Yet further PVP-typc of material suitable for use in the present invention are pol-yvmylpyrrohdone- co-dimethvlaminoethylmethacrylate. commercially available commercially ex ISP in a quaternised form under the tradename Gafquat® or commercially available ex Aldπch Chemical Co having a molecular weight of approximately 1 OMM, polyvinylpyrrohdone-co-vmyl acetate, available ex BASF under the tradename Luviskol®. available in vinylpyrrohdone vmylacetate ratios of from 3 7 to 7 3
Polymers Comprising N-oxide Units
Another D unit which provides dye transfer inhibition enhancement to the fabric abrasion reducing polymers descπbed herein, are N-oxide units having the formula
O
R1— N t — R3
R2 wherein R , R". and R can be any hydrocarbyl unit (for the purposes of the present invention the term "hydrocarbyl" does not include hydrogen atom alone) The N-oxide unit may be part of a polymer, such as a polyamine. i e . polyalkyleneamine backbone, or the N-oxide may be part of a pendant group attached to the polymer backbone An example of a polymer which comprises an the N-oxide unit as a part of the polymer backbone is polyethyleneimine N-oxide Non-limiting examples of groups which can comprise an N-oxide moiety include the N-oxides of certain heterocycles inter aha pyridine. pyrrole, lmidazole. pyrazole, pyrazine, pyπmidine, pyπdazine. piperidine, pyrrolidine, pyrrohdone, azolidme. morphohne A preferred polymer is poly(4- vinylpyπdmg N-oxide, PVNO) In addition, the N-oxide unit may be pendant to the ring, for example, aniline oxide
N-oxide comprising polymers of the present invention will preferably have a ratio of N- oxidized amme nitrogen to non-oxidized amine nitrogen of from about 1 0 to about 1 2, preferably to about 1 1. more preferably to about 3 1 The amount of N-oxide units can be adjusted by the formulator For example, the formulator may co-polymeπze N-oxide comprising monomers with non N-oxide comprising monomers to arrive at the desired ratio of N-oxide to non N-oxide ammo units, or the formulator may control the oxidation level of the polymer during preparation The amine oxide unit of the polyamine N-oxides of the present invention have a Pkd less than or equal to 10. preferably less than or equal to 7. more preferably less than or equal to 6 The average molecular weight of the N-oxide comprising polymers which provide a dy e transfer inhibitor benefit to reduced fabric abrasion polymers is from about 500 daltons. preferably from about 100.000 daltons. more preferably from about 160.000 daltons to about 6,000.000 daltons, preferably to about 2.000.000 daltons. more preferably to about 360.000 daltons Polymers Comprising Amide Units and N-oxide Units
A further example of polymers which are fabric abrasion reducing polymers which have dye transfer inhibition benefits are polymers which comprise both amide units and N-oxide units as described herein above Non-limiting examples include co-polymers of two monomers wherein the first monomer compπses an amide unit and the second monomer comprises an N-oxide unit In addition, ohgomers or block polymers comprising these units can be taken together to foπn the mixed amide/N-oxide polymers However, the resulting polymers must retain the water solubility requirements described herein above Molecular weight
For all the above polymer of the invention, it most preferred that they have a molecular weight the range as descπbed herein above This range is typically higher than the range for polymers hich render only dye transfer inhibition benefits alone Indeed, the high molecular weight enables the abrasion occurring subsequent to treatment with the polymer to be reduced, especially in a later washing procedure Not to be bound by theory, it is believed that that this benefit is partly due to the high molecular weight, thereby enabling the deposition of the polymer on the fabric surface and providing sufficient substantivity that the polymer is able to remain adhered to the fabric during the subsequent use and washing of the fabric Further, it is believed that for a given charge density, increasing the molecular weight will increase the substantivity of the polymer to the fabric surface Ideally the balance of charge density and molecular weight will provide both a sufficient rate of deposition onto the fabric surface and a sufficient adherence to the fabric during a subsequent wash cycle Increasing molecular weight is considered preferable to increasing charge density as it allows a greater choice in the range of materials which are able to provide the benefit and avoids the negative impact that increasing charge density can have such as the attraction of soil and residue onto treated fabrics It should be noted however that a similar benefit may be predicted from the approach of increasing charge density while retaining a lower molecular weight material Polvolefin dispersion
The compositions of the present invention optionally comprise from about 0 01%, preferably from about 0 1% to about 8%. preferably to about 5%, more preferably to about 3% by weight, of a poly olefin emulsion or suspension in order to provide anti -wrinkle and improved lubrication benefits to the fabrics treated by the fabric care compositions of the present invention Preferably . the polyolefin is a polyethylene, polypropylene or mixtures thereof The polvolefin may be at least partially modified to contain various functional groups, such as carboxyl. carbony 1, ester, ether, alkylamide, sulfonic acid or amide groups. More preferably, the polyolefin employed in the present invention is at least partially carboxyl modified or, in other words, oxidized. In particular, oxidized or carboxyl modified polyethylene is preferred in the compositions of the present invention.
When considering ease of formulation, the polyolefin is preferably introduced as a suspension or an emulsion of polyolefin dispersed by use of an emulsifying agent. The polyolefin suspension or emulsion preferably has from 1, preferably from 10%. more preferably from 15% to 50%, more preferably to 35% more preferably to 30% by weight, of polyolefin in the emulsion. The polyolefin preferably has a molecular weight of from 1.000. preferably from 4.000 to 15.000. preferably to 10,000. When an emulsion is employed, the emulsifier may be any suitable emulsification or suspending agent. Preferably, the emulsifier is a cationic. nonionic. zwittcrionic or anionic surfactant or mixtures thereof. Most preferably, any suitable cationic. nonionic or anionic surfactant may be employed as the emulsifier. Preferred emulsifiers are cationic surfactants such as the fatty amine surfactants and in particular the cthoxylatcd fatty amine surfactants. In particular, the cationic surfactants are preferred as emulsifiers in the present invention. The polyolefin is dispersed with the emulsifier or suspending agent in a ratio of emulsifier to polyolefin of from 1 : 10 to 3 : 1. Preferably, the emulsion includes from 0.1 , preferably from 1 %. more preferably from 2.5% to 50%), preferably to 20%, more preferably to 10% by weight, of emulsifier in the polyolefin emulsion. Polyethylene emulsions and suspensions suitable for use in the present invention arc available under the tradename VELUSTROL exHOECHST Aktiengcsellschaft of Frankfurt am Main. Germany. In particular, the polyethylene emulsions sold under the tradename VELUSTROL PKS. VELUSTROL KPA. or VELUSTROL P-40 may be employed in the compositions of the present invention. Stabilizers
The compositions of the present invention can optionally comprise from about 0.01%. preferably from about 0.035% to about 0.2%. more preferably to about 0.1% for antioxidants. preferably to about 0.2% for reductive agents, of a stabilizer. The term "stabilizer." as used herein, includes antioxidants and reducti\ e agents. These agents assure good odor stability under long ten storage conditions for the compositions and compounds stored in molten fonn. The use of antioxidants and reductive agent stabilizers is especially critical for low scent products (low perfume). Non-hmitmg examples of antioxidants that can be added to the compositions of this invention include a mixture of ascorbic acid, ascorbic palmitate, propyl gallate. ex Eastman Chemical Products. Inc . under the trade names Tenox® PG and Tenox S-l, a mixture of BHT (butylated hydroxytoluene), BHA (butylated hydroxyanisole), propyl gallate, and citric acid, ex Eastman Chemical Products, Inc , under the trade name Tenox-6, butylated hydroxytoluene. available from UOP Process Division under the trade name Sustane® BHT, tertiary butylhydroqumone, Eastman Chemical Products, Inc , as Tenox TBHQ. natural tocopherols, Eastman Chemical Products. Inc , as Tenox GT-l/GT-2, and butylated hydroxyanisole, Eastman Chemical Products, Inc . as BHA, long chain esters (C8-C22) of gallic acid, e g . dodecyl gallate, Irganox® 1010. Irganox® 1035, Irganox® B 1 171, Irganox® 1425. Irganox® 3114, Irganox® 3125. and mixtures thereof, preferably Irganox® 3125. Irganox® 1425. Irganox® 31 14, and mixtures thereof, more preferably Irganox® 3125 alone or mixed with citric acid and/or other chelators such as isopropyl citrate, Dequest® 2010, ex Monsanto with a chemical name of 1 - hydroxyethylιdene-1, 1 -diphosphonic acid (etidronic acid), and Tiron®, ex Kodak with a chemical name of 4.5-dιhydroxy-m-benzene-sulfonιc acid/sodium salt, EDDS, and DTPA®. ex Aldrich with a chemical name of diefhylenetπammepentaacetic acid Hydrophobic Dispersant
A preferred composition of the present invention comprises from about 0 1%>, preferably from about 5%, more preferably form about 10% to about 80%>, preferably to about 50%. more preferably to about 25% by weight, of a hydrophobic polyamine dispersant having the formula
R1 B
[(R^N- RlwfN 1 - RkfN ' - Rj NCR1), wherein R. R1 and B are suitably descπbed in U S 5.565, 145 Watson et al , issued October 15.
1996 incorporated herein by reference, and w. x, and y have values which provide for a backbone prior to substitution of preferably at least about 1200 daltons. more preferably 1800 daltons
R1 units are preferably alkyleneoxy units having the formula
-(CH2CHRO)m(CH2CH2θ)nH wherein R' is methyl or ethyl, m and n are preferably from about 0 to about 50. provided the average value of alkoxy lation provided by m + n is at least about 0 5
A further description of polyamine dispersants suitable for use m the present invention is found m U S 4.891.160 Vander Meer. issued January 2, 1990. U S 4,597,898. Vander Meer, issued July 1. 1986. European Patent Application 1 11.965. Oh and Gossehnk. published June 27. 1984. European Patent Application 111.984, Gossehnk. published June 27. 1984. European Patent Application 112,592, Gossehnk, published July 4. 1984. U S 4.548.744, Connor, issued October 22, 1985. and U S 5.565.145 Watson et al . issued October 15. 1996, all of which are included herein by reference However, any suitable clay/soil dispersent or anti-redepostion agent can be used in the laundry compositions of the present invention Electrolyte
The fabric softening embodiments of the compositions of the present invention, especially clear, isotropic liquid fabric softening compositions, may also optionally, but preferably comprise, one or more electrolytes for control of phase stability, viscosity, and/or clarity For example, the presence of certain electrolytes inter aha calcium chloride, magnesium chloride may be key to insuring initial product clarity and low viscosity, or may affect the dilution viscosity of liquid embodiments, especially isotropic liquid embodiments Not wishing to be limited by theory, but only wishing to provide an example of a circumstance wherein the formulator must insure proper dilution viscosity, includes the following example Isotropic or non-isotropic liquid fabric softener compositions can be introduced into the rinse phase of laundry operations via an article of manufacture designed to dispense a measured amount of said composition Typically the article of manufacture is a dispenser which delivers the softener active only during the rinse cycle These dispensers are typically designed to allow an amount of water equal to the volume of softener composition to enter into the dispenser to insure complete delivery of the softener composition An electrolyte may be added to the compositions of the present invention to insure phase stability and prevent the diluted softener composition from "gelling out" or from undergoing an undesirable or unacceptable viscosity increase Prevention of gelling or formation of a "swelled", high viscosity solution insures thorough delivery of the softener composition
However, those skilled in the art of fabric softener compositions will recognize that the level of electrolyte is also influenced by other factors inter aha the type of fabric softener active, the amount of principal solvent, and the level and type of nonionic surfactant For example, tπethanol amine derived ester quaternary amines suitable for use as softener actives according to the present invention are typically manufactured in such a way as to yield a distribution of mono-, di-, and tπ- esteπfied quaternary ammonium compounds and amine precursors Therefore, as in this example, the variability m the distribution of mono-, di-. and tπ- esters and ammes may predicate a different level of electrolyte Therefore, the formulator must consider all of the ingredients, namely, softener active, nonionic surfactant, and in the case of isotropic liquids, the principal solvent type and level, as well as level and identity of adjunct ingredients before selecting the type and or level of electrolyte
A wide variety of lonizable salts can be used Examples of suitable salts are the hahdes of the Group IA and IIA metals of the Periodic Table of the elements, e g . calcium chloride, sodium chloride, potassium bromide, and lithium chloride The lonizable salts are particularly useful during the process of mixing the ingredients to make the compositions herein, and later to obtain the desired viscosity The amount of lonizable salts used depends on the amount of active ingredients used in the compositions and can be adjusted according to the desires of the formulator Typical levels of salts used to control the composition viscosity are from about 20 to about 10.000 parts per million (ppm), preferably from about 20 to about 5.000 ppm, of the composition
Alkylene polyammonium salts can be incorporated into the composition to give viscosity control in addition to or m place of the water-soluble, lonizable salts above. In addition, these agents can act as scavengers, forming ion pairs with anionic detergent carried over from the mam wash, in the rinse, and on the fabrics, and can improve softness performance These agents can stabilized the viscosity over a broader range of temperature, especially at low temperatures, compared to the inorganic electrolytes Specific examples of alkylene polyammonium salts include L-lysine. monohydrochloπde and 1.5-dιammomum 2-methyl pentanc dihydrochloπde Cationic Charge Boosters
The compositions or the present invention may optionally comprise one or more cationic charge boosters, especially to the rinse-added fabric softening embodiments of the present invention Typically, ethanol is used to prepare many of the below listed ingredients and is therefore a source of solvent into the final product formulation The formulator is not limited to ethanol. but instead can add other solvents inter aha hexyleneglycol to aid in formulation of the final composition This is especially true in clear, translucent, isotropic compositions
The preferred cationic charge boosters of the present invention are described herein below l) Quaternary Ammonium Compounds
A preferred composition of the present invention comprises at least about 0 2%, preferably from about 0 2% to about 10%. more preferably from about 0 2% to about 5% by weight, of a cationic charge booster having the formula R2 Rl— N -R3 X ^4 wherein R0 RØ R-0 and R^ are each independently C1 -C22 alkyl, C3-C22 alkenyl. R^-Q- (CH2)m-. wherein R^ is C]-C22 alkyl, and mixtures thereof, m is from 1 to about 6, X is an amon
Preferably R is C^-C22 alkyl, Cg-C22 alkenyl, and mixtures thereof, more preferably Cj i-Cjg alkyl. Ci j-Cjg alkenyl. and mixtures thereof. RØ R-> 5 and R^ are each preferably C\- C4 alkyl. more preferably each R R-> 5 and R^ are methyl
The formulator may similarly choose R' to be a R^-Q-(CH2)m- moiety wherein R^ is an alkyl or alkenyl moiety having from 1 to 22 carbon atoms, preferably the alkyl or alkenyl moiety when taken together with the Q unit is an acyl unit derived preferably derived from a source of triglyceride selected from the group consisting of tallow, partially hydrogenated tallow, lard, partially hydrogenated lard, vegetable oils and/or partially hydrogenated vegetable oils, such as, canola oil, safflower oil, peanut oil, sunflower oil, com oil, soybean oil. tall oil, rice bran oil, etc and mixtures thereof
An example of a fabric softener cationic booster comprising a R5-Q-(CH2)m- moiety has the formula
wherein R5-Q- is an oleoyl units and m is equal to 2
X is a softener compatible amon. preferably the amon of a strong acid, for example, chloride, bromide, methylsulfate. ethylsulfate. sulfate. nitrate and mixtures thereof more preferably chloride and methyl sulfate
11) Polyvmyl Amines
A preferred embodiment of the present invention contains at least about 0 2%, preferably from about 0 2% to about 5%. more preferably from about 0 2% to about 2% by weight, of one or more polyviny 1 amines having the formula wherein y is from about 3 to about 10.000. preferably from about 10 to about 5.000. more preferably from about 20 to about 500 Polyvinyl amines suitable for use in the present invention are available from BASF
Optionally, one or more of the polyvinyl amine backbone -NH2 unit hydrogens can be substituted by an alkyleneoxy unit having the formula
— (RlO)xR2 wherein R* is C2-C4 alkylene. R^ is hydrogen, C J-C4 alkyl. and mixtures thereof, x is from 1 to 50 In one embodiment or the present invention the polyvinyl amme is reacted first with a substrate which places a 2-propyleneoxy unit directly on the nitrogen followed by reaction of one or more moles of ethylene oxide to form a unit having the general formula
CH3 I (CH2CHO) — (CH2CH2O)χH wherein x has the value of from 1 to about 50 Substitutions such as the above arc represented by the abbreviated formula PO-EOx- However, more than one propyleneoxy unit can be incorporated into the alkyleneoxy substituent
Polyvinyl amines are especially preferred for use as cationic charge booster in liquid fabric softening compositions since the greater number of amine moieties per unit weight provides substantial charge density In addition, the cationic charge is generated in situ and the level of cationic charge can be adjusted by the formulator
111) Poly-Quaternary Ammonium Compounds
A preferred composition of the present invention comprises at least about 0 2%, preferably from about 0 2% to about 10%. more preferably from about 0 2% to about 5% by weight, of a cationic charge booster having the formula
wherein R is substituted or unsubstituted C2-C12 alkylene. substituted or unsubstituted C2-C12 hydroxyalkylene, each R is independently CJ-C4 alkyl. each R^ is independently C1-C22 alkyl. C3-C22 alkenyl. R-0Q-(CH2 m-, wherein R^ is C1 -C22 alkyl, C3-C22 alkenyl. and mixtures thereof, m is from 1 to about 6, Q is a carbonyl unit as defined heremabove. and mixtures thereof,
Preferably R is ethylene, Rl IS methyl or ethyl, more preferably methy l, at least one R^ is preferably C 1-C alkyl, more preferably methyl Preferably at least one R^ IS C J 1 -C22 alkyl, C 11 -C22 alkenyl. and mixtures thereof
The formulator may similarly choose R^ to be a R-0Q-(CH2)m- moiety wherein R- is an alkyl moiety having from 1 to 22 carbon atoms, preferably the alkyl moiety when taken together with the Q unit is an acyl unit derived preferably derived from a source of trigl ceride selected from the group consisting of tallow, partially hydrogenated tallow, lard, partially hydrogenated lard, vegetable oils and/or partially hydrogenated vegetable oils, such as. canola oil. safflowcr oil. peanut oil, sunflower oil, com oil, soybean oil, tall oil, rice bran oil, etc and mixtures thereof
An example of a fabric softener cationic booster comprising a R-0Q-(CH2 m- moiety has the fonnula
wherei n Rl IS methyl, one R^ units is methyl and the other R^ unit is R-,-Q-(CH2)m- herein R3-Q- is an oleoyl unit and m is equal to 2
X is a softener compatible amon. preferably the amon of a strong acid, for example, chloride, bromide, methylsulfate, ethylsulfate. sulfate. nitrate and mixtures thereof, more preferably chloride and methyl sulfate Cationic Nitrogen Compounds
The fabric enhancement compositions of the present invention may optionally comprise from about 0 5%. preferably from about 1%> to about 10%. preferably to about 5%> by weight, of one or more cationic nitrogen containing compound, preferably a cationic compound having the formula R- -N+-(~R, h')3 X
wherein R is Cio-Cjg alkyl. each R is independently Cj-C alkyl, X is a water soluble amon. preferably R is Cn-Cι . preferably R! is methyl Preferred X is halogen, more preferably chlorine
Non-limiting examples of preferred cationic nitrogen compounds are N,N,N-tπmethyl-N- dodecyl ammonium chloride, N,N-dιmethyl-(2-hydroxyethyl)-N-dodecyl ammonium bromide, N.N- dιmethyl-(2-hydroxyethyl)-N-tetradecyl ammonium bromide Suitable cationic nitrogen compounds are available ex Akzo under the tradenames Ethomeen T/15®, Secomine TA15®, and Ethoduomeen T/20®
Of course, the composition may also comprises further optional like perfume, cyclodextπns, chlorine scavengers, etc
FORMULATIONS
The textile enhancement compositions of the present invention may be in any form inter aha liquid, granular, paste Depending upon the specific form of the textile enhancement composition the formulator may use different active combinations The composition dispersion comprise a) from about 0 05% by weight, of a softening compound having a transition temperature of less than 30 °C, b) optionally less than about 25% by weight, of a principal solvent, preferably said principal solvent has a ClogP of from about 0 15 to about 1. c) optionally from about 0 001 % to about 90% by weight, of one or more dye fixing agents, d) optionally about 0 005% to about 1% by weight, of one or more crystal growth inhibitors. e) optionally from about 0 01% to about 8% by weight, of a polyolefin emulsion or suspension. f) optionally from about 0 01% to about 0 2% by weight, of a stabilizer. g) optionally from about 0 5% to about 5% by weight, of a cationic surfactant, and h) the balance liquid carrier and optional adjunct ingredients
The compositions of the present invention can be applied by the manufacturer at any point, inter aha. while weaving the fabric, after manufacture into an article of apparel The formulations may be applied by any means, inter aha. by dipping of the fabric, squeezing via roller, padding or sprayed
The dispersion of the composition can be pre-formed prior to application to the fiber or fabric by prior mixing with water or can formed upon treatment by dilution with water
METHOD OF USE
The present invention further relates to a method for providing textile and fabric enhancement benefits, preferably to clothing, said method comprising the step of contacting textiles or fabric with the softening compound having a transition temperature of less than 30 °C or dispersion thereof or compositions of the present invention, in industry, preferably at a point during manufacture or after fashioning into an article of apparel, said composition comprising a) from about 0 05%) by weight, of a softening compound having a transition temperature of less than 330 °C, b) optionally less than about 25% by weight, of a principal solvent, preferably said principal solvent has a ClogP of from about 0 15 to about 1. c) optionally from about 0 001% to about 90% by weight, of one or more dye fixing agents, d) optionally about 0 005% to about 1%> by weight, of one or more crystal growth inhibitors. e) optionally from about 0 01% to about 8% by weight, of a polyolefin emulsion or suspension, ) optionally from about 0 01 % to about 0 2% by weight, of a stabilizer, g) optionally from about 0 5% to about 5% by weight, of a cationic surfactant, and h) the balance carriers and adjunct ingredients The following are non-limiting examples of compositions according to the present invention
TABLE I wei ht %
Di(acyloxyethyl)(2-hydroxyethyl)methyl ammonium methyl sulfate where the acyl group is derived from partially hydrogenated canola fatty acid. 85% active commercially available under the tradename Rewoquat V3620 from Witco.
Di(acyloxyethyl) dimethyl ammonium chloride where the acyl group is derived from partially hydrogenated canola fatty acid, 85%> active as described in WO97/03169.
3. 2,2,4 trimethyl 1,3 pentanediol. 4. Neodol 91-8 ex Shell.
TABLE II
1 Dι(acyloxyethyl)(2-hydroxyethyl)methyl ammonium methyl sulfate where the acyl group is derived from partially hydrogenated canola fatty acid. 85% active commercially available under the tradename Rewoquat V3620 from Witco
2 Dι(acyloxyethyl) dimethyl ammonium chloride where the acyl group is derived from partially hydrogenated canola fatty acid. 85% active as descπbed in WO97/03169 page 21-22
TABLE III
derived from partially hydrogenated canola fatty acid. 85% active commercially available under the tradename Rewoquat V3620 from Witco 2 Dι(acyloxyethyl) dimethyl ammonium chloride where the acy 1 group is derived from partially hydrogenated canola fatty acid. 85% active as described in WO97/03169 page 21-22
TABLE IV weight %
Perfume 1.75 1.25 1.20
Water + Minors balance balance balance
1. Di(acyloxyethyl)(2-hydroxyethyl)methyl ammonium methyl sulfate where the acyl group is derived from partially hydrogenated canola fatty acid, 85% active commercially available under the tradename Rewoquat V3620 from Witco.

Claims

WHAT IS CLAIMED IS
1 A textile enhancement composition comprising a) from about 0 05% by weight, of a softening compound having a transition temperature of less than 30 °C, b) optionally less than about 25% by weight, of a principal solvent, preferably said principal solvent has a ClogP of from about 0 15 to about 1 , c) optionally from about 0 001% to about 90% by weight, of one or more dye fixing agents, d) optionally about 0 005%) to about 1 % by weight, of one or more crystal growth inhibitors, e) optionally from about 0 01 % to about 8% by weight, of a poly olefin emulsion or suspension, f) optionally from about 0 01% to about 0 2% by weight, of a stabilizer, g) optionally from about 0 5% to about 5% by weight, of a cationic surfactant, and h) the balance being a liquid carrier and optional adjunct ingredients
2 A composition according to Claim 1 wherein said softening active is selected from amines having the formula
(R) N ^CCHzln-Q-R1
3-m quaternary ammonium compounds having the formula
(R)- -N- (CHzln-Q-R1 -m
and mixtures thereof, wherein each R is independently Cj-Cg alkyl, C j-C hydroxyalk l. benzyl, and mixtures thereof. R is selected from Cj 1-C22 hnear alkyl. Cj 1-C22 branched alkyl. Cj 1-C22 linear alkenyl, Ci 1-C22 branched alkenyl. and mixtures thereof, Q is a carbonyl moiety independently selected from the group consisting of esters, secondary amides, tertiary amides, carbonate, mono carbonyl substituted alkylene. poly carbonyl substituted alkylene, and mixtures thereof, X is a softener compatible amon, the index m has a value of from 1 to 3. the index n has a value of from 1 to 4
A composition according to Claim 2. wherein the unit -OC(0)R represents a fatty acyl unit which is derived from a triglyceride source
A composition according to Claim 3 wherein the triglyceride source is derived from tallow, partially hydrogenated tallow, lard, partially hydrogenated lard, vegetable oils and/or partially hydrogenated vegetable oils, such as, canola oil, safflower oil, peanut oil, sunflower oil, com oil, soybean oil. tall oil. rice bran oil. etc and mixtures of these oils
A composition according to Claim 4 wherein the source of triglyceride is selected from canola oil. partially hydrogenated canola oil, and mixtures thereof
A composition according to any one of Claims 1 wherein said dispersion has a particle size of less than 100 microns
A composition according to any one of Claims 1 wherein said liquid carrier comprises water
A composition according to any one of Claims 1 wherein said liquid carrier comprises water, organic solvents, and mixtures thereof
A composition according to Claim 8 wherein said organic solvents are low molecular weight alcohols
A method for providing textile and fabric enliancement benefits, said method comprising the step of contacting textiles or fabric with a softening composition in the form of an aqueous solution or an aqueous dispersion in an industrial textile manufacturing process, said composition comprising a) from about 0 05% by weight, of a softening compound having a transition temperature of less than 30 °C. b) optionally less than about 25% by weight, of a principal solvent, preferably said principal solvent has a ClogP of from about 0 15 to about 1 , c) optionally from about 0 001% to about 90%> by weight, of one or more dye fixing agents, d) optionally about 0 005% to about 1 % by weight, of one or more crystal growth inhibitors, e) optionally from about 0 01 % to about 8% by weight, of a poly olefin emulsion or suspension, f) optionally from about 0 01%) to about 0 2% by weight, of a stabilizer, g) optionally from about 0 5% to about 5% by weight, of a cationic surfactant, and h) the balance being a liquid carrier and optional adjunct ingredients
A method according to Claim 10 wherein said textile of fabric is contacted with said composition at a point during manufacture, after fashioning into an article of apparel, or mixtures thereof
A method for providing water absorbency and softness benefits to fabric during a manufacturing step, said method comprising the step of contacting said fabric with a composition comprising a) from about 0 05 % by weight, of a softening compound having a transition temperature of less than 30 °C. b) optionally less than about 25% by weight, of a principal solvent, preferably said principal solvent has a ClogP of from about 0 15 to about 1 , c) optionally from about 0 001% to about 90% by weight, of one or more dye fixing agents, d) optionally about 0 005% to about 1 % by weight, of one or more crystal growth inhibitors, e) optionally from about 0 01%) to about 8% by weight, of a polyolefin emulsion or suspension, f) optionally from about 0 01% to about 0 2% by weight, of a stabilizer. g) optionally from about 0 5% to about 5% by weight, of a cationic surfactant, and h) the balance being a liquid carrier and optional adjunct ingredients
EP00977005A 1999-11-15 2000-11-06 Fabric enhancement treatment Withdrawn EP1230332A1 (en)

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WO1998047991A1 (en) * 1997-05-19 1998-10-29 The Procter & Gamble Company Softener active derived from acylated triethanolamine
US5919750A (en) * 1997-07-24 1999-07-06 Akzo Nobel Nv Fabric softener composition
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