Classifications

• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
  • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
  • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
  • C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions
  • C11D17/043—Liquid or thixotropic (gel) compositions
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/38—Cationic compounds
  • C11D1/645—Mixtures of compounds all of which are cationic
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/0005—Other compounding ingredients characterised by their effect
  • C11D3/001—Softening compositions
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/2075—Carboxylic acids-salts thereof
  • C11D3/2086—Hydroxy carboxylic acids-salts thereof
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/50—Perfumes
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/38—Cationic compounds
  • C11D1/40—Monoamines or polyamines; Salts thereof
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/38—Cationic compounds
  • C11D1/52—Carboxylic amides, alkylolamides or imides or their condensation products with alkylene oxides
  • C11D1/528—Carboxylic amides (R1-CO-NR2R3), where at least one of the chains R1, R2 or R3 is interrupted by a functional group, e.g. a -NH-, -NR-, -CO-, or -CON- group
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/38—Cationic compounds
  • C11D1/62—Quaternary ammonium compounds

Definitions

• This invention relates to unit dose laundry compositions for softening or conditioning fabrics. More particularly, this invention relates to unit dose fabric softening compositions, which are contained in a water-soluble container suitable for use in an automatic washing machine, wherein these compositions effectively deliver fragrance to the fabric as well as antistatic benefits and fabric softening.
• Detergent compositions manufactured in the form of compacted detergent powder are known in the art.
• U.S. 5,225,100 for example, describes a tablet of compacted powder comprising an anionic detergent compound, which will adequately disperse in the wash water.
• detergent compositions in the form of compacted granular tablets of various shapes have received much attention in the patent literature, the use of such tablets to provide a unit dose fabric softener which will soften or condition fabrics in the wash cycle without impairing detergency or otherwise compromise the cleaning benefits provided by the detergent composition is not known.
• Laundry detergent compositions which further include a fabric softener to provide softening or conditioning of fabrics in the wash cycle of the laundering operation are well-known in the art and described in the patent literature. See, for example, U.S.
• U.S. Patent 5,972,870 to Anderson describes a multi-layered laundry tablet for washing which may include a detergent in the outer layer and a fabric softener, or water softener or fragrance in the inner layer.
• these type of multi-benefit products suffer from a common drawback, namely, there is an inherent compromise which the user necessarily makes between the cleaning and softening benefits provided by such products as compared to using a separate detergent composition solely for cleaning in the wash cycle and a separate softening composition solely for softening in the rinse cycle.
• the user of such detergent softener compositions does not have the ability to independently adjust the amount of detergent and softener added to the wash cycle of a machine in response to the cleaning and softening requirements of the particular wash load.
• wash cycle active fabric softeners typically in powder form. But, these type products are characterized by the same inconvenience inherent with the use of powered detergents, namely, problems of handling, caking in the container or wash cycle dispenser, and the need for a dosing device to deliver the desired amount of active softener material to the wash water.
• a unit dose fabric softening composition contained in a water soluble container such as a sachet
• the unit dose fabric softening compositions, contained in a sachet must be able to disperse in the wash liquor in a short period of time to avoid any residue at the end of the wash cycle.
• the wash cycle time can be as short as 12 minutes and as long as 90 minutes (in typical European washers) depending on the type of washer and the wash conditions. Therefore, the water-soluble film of the sachet must be soluble in the wash liquor before the end of the cycle.
• the present invention provides a unit dose fabric softening composition contained in a water soluble container for softening or conditioning fabrics in an automatic washing machine, said unit dose comprising (a) a wash soluble container; and (b) disposed in the water soluble container is a fabric softener composition, the amount of composition being sufficient to form a unit dose capable of providing effective delivery of fragrance to the fabric, antistatic benefits and softening or conditioning of fabrics in said washing machine.
• fabric softener is used herein for purposes of convenience to refer to materials which provide softening and/or conditioning benefits to fabrics in a home or automatic laundering machine as well as effectively delivering antistatic benefits and fragrance to the fabric being cleaned.
• the fabric softener composition of the invention is preferably comprised of one or more fabric softening agents and a perfume.
• a process for softening or conditioning laundry which comprises contacting the laundry with an effective amount of the unit dose laundry composition defined above.
• the present invention relates to a water soluble sachet containing a unit dose of a fabric softener composition, wherein the water soluble sachet is formed from a single layer of water soluble thermoplastic film such as a polyvinyl alcohol, wherein the inner surface of the film is in contact with the fabric softener composition and the external surface of the film does not have a water soluble glue disposed thereon.
• a water soluble sachet containing a unit dose of a fabric softener composition, wherein the water soluble sachet is formed from a single layer of water soluble thermoplastic film such as a polyvinyl alcohol, wherein the inner surface of the film is in contact with the fabric softener composition and the external surface of the film does not have a water soluble glue disposed thereon.
• amine fabric softening active compound (a) 48% to 82% of at least one amine fabric softening active compound; (b) 0.1 % to 18% of an alpha hydroxy aliphatic acid selected from the group consisting of citric acid, lactic acid, glycolic acid and mixtures thereof, wherein the amine fabric softening active compound at least partially reacts in situ with the alpha hydroxy acid to form an amine salt of the alpha hydroxy acid; (c) 0.5% to 6% of a cationic surfactant;
• composition does not contain an anionic sulfate surfactant, an anionic sulfonate surfactant, a hexeylene glycol or an amine oxide surfactant.
• Another fabric softener composition contained in a water sachet comprises approximately by weight:
• composition does not contain an anionic sulfate surfactant, an anionic sulfonate surfactant, a hexeylene glycol or an amine oxide surfactant.
• Another fabric softener composition contained in a water soluble container which is formed from a water soluble polymers are selected from the group consisting of polyvinyl alcohols, polyvinyl alcohol copolymers such as polyvinyl alcohol/polyvinyl pyrrolidone, partially hydrolyzed polyvinyl acetate, polyvinyl pyrrolidone, alkyl celluloses such as methyl cellulose, ethyl cellulose and propyl cellulose, ethers and esters of alkyl celluloses of alkyl celluloses, hydroxy ethyl cellulose, hydroxy propyl cellulose, carboxy methyl cellulose sodium, dextrin, maltodextrin, such as methyl cellulose, ethyl cellulose and propyl cellulose, water soluble polyacrylates, water soluble polyacrylamides and acrylic acid/maleic anhydride copolymers comprises approximately by weight:
• compositions do not contain an anionic sulfate surfactant, an anionic sulfonate surfactant, a hexeylene glycol or an amine oxide surfactant.
• the instant compositions do not contain a detergent builder salt, a silicone glycol copolymer, a nonionic surfactant, a green colorant, a yellow colorant or a poly(oxyalkylene) substrated colorant.
• perfume is used in its ordinary sense to refer to and include any non-water soluble fragrant substance or mixture of substances including natural (i.e., obtained by extraction of flower, herb, blossom or plant), artificial (i.e., mixture of natural oils or oil constituents) and synthetically produced substance) odoriferous substances.
• perfumes are complex mixtures of blends of various organic compounds such as alcohols, aldehydes, ethers, aromatic compounds and varying amounts of essential oils (e.g., terpenes) such as from 0% to 80%, usually from 10% to 70% by weight, the essential oils themselves being volatile odoriferous compounds and also serving to dissolve the other components of the perfume.
• the precise composition of the perfume is of no particular consequence to softening performance so long as it meets the criteria of water immiscibility and having a pleasing odor.
• the perfume, as well as all other ingredients should be cosmetically acceptable, i.e., non-toxic, hypoallergenic, etc.
• the fabric softening active compound is an amidoamine of formula (I):
• and R 2 are each, independently, long chain alkyl or alkenyl groups having from 8 to 22 carbon atoms, preferably from 10 to 18 carbon atoms, such as, for example, octyl, octenyl, decyl, decenyl, dodecyl, dodecenyl, octadecyl, octadecenyl.
• R- ⁇ and R 2 and more generally R-j CO and 5 2 ⁇ o , will be derived from natural oils containing fatty acids or fatty acid mixtures, such as coconut oil, palm oil, tallow, rape oil and fish oil. chemically synthesized fatty acids are also usable.
• R-tallow hydrogenated tallow
• and R 2 are derived from the same fatty acid or fatty acid mixture.
• R3 represents (CH 2 CH 2 0)pH, CH3 or H, or mixtures thereof may also be present.
• p is a positive number representing the average degree of ethoxylation, and is preferably from 1 to 10, especially 1.5 to 6, and most preferably from about 2 to 4, such as 2.5 n and m are each integers of from 1 to 5, preferably 2 to 4, especially 2.
• R3 represents the preferred (CH 2 CH 2 0)pH group
• R3 represents the preferred (CH 2 CH 2 0)pH group
• hydroxyethyl is also used to describe the (CH 2 CH 2 0)pH group.
• the compound of formula (I) which is commercially available is VarisoftTM 510, available from Sherex Chemical Company, which is bis(hydrogenated tallow-amidoethyl)-hydroxyethyl amine of formula:
• Another especially preferred fabric softening active compound is an amine such as AdogenTM 343 available from Degussa, Goldschmidt Textile Care which is a bis(hydrogenated tallow)-methyl amine.
• AdogenTM 343 available from Degussa, Goldschmidt Textile Care which is a bis(hydrogenated tallow)-methyl amine.
• Another useful amine which is availalbe from BASF Kaosoft PH, Kao Corporation S.A. is di(hydrogenated tallow) diester of methyl diethanol amine.
• An especially preferred composition consists of a mixture of Varisoft 510 and Adogen 343 in a weight ratio of 1.5:1 to 1 :0.75.
• Varisoft 512 the corresponding soft (non-hydrogenated) tallow derivative, available from Sherex as Varisoft 512, may be used.
• Varisoft 512 is ethoxylated with 3.5 moles, on average, rather than 2.5 moles EO as in Varisoft 510.
• the softening performance of the hard tallow derivative is somewhat better than that of the soft tallow. It has been found that when Varisoft 510 and Varisoft 512 are used in admixture, preferably at ratios of about 10:1 to about 1.5:1 , preferably from 8:1 to 2:1 , especially 6:1 to 3:1 , both softening performance and stability are improved.
• the cationic softener is represented by the following formula:
• R-) and R 2 can independently be a C-
• a preferred cationic softener is ArosurfTM TA-100 available from Degussa, Goldschmidt Textile Care wherein ArosurfTM TA-100 is a dimethyl ammonium chloride.
• the cationic surfactant which can be used in the instant composition has the formula (I):
• R- is an alkyl or alkenyl radical containing from about 8 to about 22 carbon atoms
• R 2 is an alkyl group of not more than 6 carbon atoms
• R3 and R4, which may be the same or different, are selected from the group consisting of alkyl of not more than 6 carbon atoms and (R ⁇ O)n H, wherein R5 is an alkylene of 2 to 4 carbon atoms and n is a number of from 1 to 25, and
• X ' is a water-soluble anion such as chloride or CH3SO4 " methyl sulfate.
• a preferred cationic surfactant is stearyl 15 EO ammonium methyl sulfate available from Adogen 66 is also Degussa, Goldschmidt Textile Care
• the water soluble container which can be in the form of a sachet, a blow molded capsule or other blow molded shapes, an injected molded ampoule or other injection molded shapes, or rotationally molded spheres or capsules are formed from a water soluble thermoplastic resin.
• the water soluble polymers are selected from the group consisting of polyvinyl alcohols, polyvinyl alcohol copolymers such as polyvinyl alcohol/polyvinyl pyrrolidone, partially hydrolyzed polyvinyl acetate, polyvinyl pyrrolidone, alkyl celluloses such as methyl cellulose, ethyl cellulose and propyl cellulose, ethers and esters of alkyl celluloses of alkyl celluloses, hydroxy ethyl cellulose, hydroxy propyl cellulose, carboxy methyl cellulose sodium, dextrin, maltodextrin, such as methyl cellulose, ethyl cellulose and propyl cellulose, water soluble polyacrylates, water soluble polyacrylamides and acrylic acid/maleic anhydride copolymers.
• polyvinyl alcohols polyvinyl alcohol copolymers such as polyvinyl alcohol/polyvinyl pyrrolidone, partially hydrolyzed polyviny
• Especially preferred water soluble plastics which may be considered for forming the container include low molecular weight and/or chemically modified polylactides; such polymers have been produced by Chronopol, Inc. and sold under the Heplon trademark. Also included in the water soluble polymer family are melt processable poly(vinyl) alcohol resins (PVA); such resins are produced by Texas Polymer Services, Inc., tradenamed Vinex, and are produced under license from Air Products and Chemicals, Inc. and Monosol film produced by Monosol LLC. Other suitable resins include poly (ethylene oxide) and cellulose derived water soluble carbohydrates. The former are produced by Union Carbide, Inc. and sold under the tradename Polyox; the latter are produced by Dow Chemical, Inc. and sold under the Methocel trademark.
• PVA melt processable poly(vinyl) alcohol resins
• Other suitable resins include poly (ethylene oxide) and cellulose derived water soluble carbohydrates.
• the former are produced by Union Carbide, Inc. and sold under the tradename Polyox; the latter
• the cellulose derived water soluble polymers are not readily melt processable.
• the preferred water soluble thermoplastic resin for this application is PVA produced by Monosol LLC. Any number or combination of PVA resins can be used.
• the preferred grade, considering resin processability, container durability, water solubility characteristics, and commercial viability is Monosol film having a weight average molecular weight range of about 55,000 to 65,000 and a number average molecular weight range of about 27,000 to 33,000.
• the sachet may be formed from poly(vinyl) alcohol film.
• the pelletized, pre- dried, melt processable polyvinyl alcohol (PVA) resin is feed to a film extruder.
• the feed material may also contain pre-dried color concentrate which uses a PVA carrier resin.
• Other additives, similarly prepared, such as antioxidants, UV stabilizers, anti- blocking additives, etc. may also be added to the extruder.
• the resin and concentrate are melt blended in the extruder.
• the extruder die may consist of a circular die for producing blown film or a coat hanger die for producing cast film. Circular dies may have rotating die lips and/or mandrels to modify visual appearance and/or properties.
• the PVA resins can also be dissolved and formed into film through a solution-casting process, wherein the PVA resin or resins are dissolved and mixed in an aqueous solution along with additives.
• This solution is cast through a coat hanger die, or in front of a doctor blade or through a casting box to produce a layer of solution of consistent thickness.
• This layer of solution is cast or coated onto a drum or casting band or appropriate substrate to convey it through an oven or series of ovens to reduce the moisture content to an appropriate level.
• the extruded or cast film is slit to the appropriate width and wound on cores. Each core holds one reel of film.
• Weight Average Molecular Weight (Mw) 15,000 to 95,000; preferred is 55,0 65,000
• Poly(vinyl) alcohol film is formed from Monosol 7030 or Monosol 8630
• Reels of slit film are fed to a form, fill, seal machine (FFS).
• the Form, Fill, Seal machine (FFS) makes the appropriate sachet shape (cylinder, square, pillow, oval, etc.) from the film , fills the sachet with product, and seals the sachet.
• form fill seal machines that can convert water soluble films including vertical, horizontal and rotary machines.
• form fill seal machines that can convert water soluble films including vertical, horizontal and rotary machines.
• the sachet shape can be folded into the film, mechanically deformed into the film, or thermally deformed into the film.
• the sachet forming can also utilize thermal bonding of multiple layers of film, or solvent bonding of multiple layers of film.
• poly(vinyl) alcohol the most common solvent is water.
• Blow molded capsules are formed from the poly(vinyl) alcohol resin having a molecular weight of about 50,000 to about 70,000 and a glass transition temperature of about 28 to 33°C.
• Pelletized resin and concentrate(s) are feed into an extruder.
• the extruder into which they are fed has a circular, oval, square or rectangular die and an appropriate mandrel.
• the molten polymer mass exits the die and assumes the shape of the die/mandrel combination..
• Air is blown into the interior volume of the extrudate (parison) while the extrudate contacts a pair of split molds.
• the molds control the final shape of the package. While in the mold, the package is filled with the appropriate volume of liquid. The mold quenches the plastic.
• the liquid is contained within the interior volume of the blow molded package.
• An injection molded ampoule or capsule is formed from the poly(vinyl) alcohol resin having a molecular weight of about 50,000 to about 70,000 and a glass transition temperature of about 28 to 38°C.
• Pelletized resin and concentrate(s) are fed to the throat of an reciprocating screw, injection molding machine. The rotation of the screw pushes the pelletized mass forward while the increasing diameter of the screw compresses the pellets and forces them to contact the machine's heated barrel.
• the molten polymer mass collects in front of the screw as the screw rotates and begins to retract to the rear of the machine.
• the screw moves forward forcing the melt through the nozzle at the tip of the machine and into a mold or hot runner system which feeds several molds.
• the molds control the shape of the finished package.
• the package may be filled with liquid either while in the mold or after ejection from the mold.
• the filling port of the package is heat sealed after filling is completed. This process may be conducted either in-line or off-line.
• a rotationally molded sphere or capsule is formed from the poly(vinyl) alcohol resin having a molecular weight of about 50,000 to about 70,000 and a glass transition temperature of about 28 to 38°C.
• Pelletized resin and concentrate are pulverized to an appropriate mesh size, typically 35 mesh.
• a specific weight of the pulverized resin is fed to a cold mold having the desired shape and volume. The mold is sealed and heated while simultaneously rotating in three directions. The powder melts and coats the entire inside surface of the mold. While continuously rotating, the mold is cooled so that the resin solidifies into a shape which replicates the size and texture of the mold. After rejection of the finished package, the liquid is injected into the hollow package using a heated needle or probe after filling, the injection port of the package is heat sealed.
• Typical unit dose compositions for use herein may vary from about 5 to about 20 ml corresponding on a weight basis to about 5 to about 20 grams (which includes the weight of the capsule).
• Example 1 The following fabric softener to be used in the wash cycle was prepared comprising the following ingredients
• the formulation above was the result of evaluation of the individual amines and a range of mixtures. Single acid systems and mixed acid systems were also evaluated.
• the least water dispersible formulations contained exclusively Adogen 343 and citric acid. These systems delivered the best antistat benefits.
• the most water dispersible systems contained exclusively Varisoft 510 and glycolic acid. These systems delivered the least effective antistat.
• Formulation optimization depended on the size, shape and thickness of the soft solid dose chosen. Scale up to production could be executed best by vertical filing (with melted product) of rectangular PVA pouches and letting the pouch lay flat while the product solidifies.
• the formulation above was evaluated in this form in pouches 6.5 cm by 7 cm and showed effective fragrance delivery, good antistatic benefits, good fabric softening and residue between 1-2%.
• the following fabric softener composition formula to be used in the rinse cycle was prepared in wt. % by simple mixing:
• the first fraction comprised the material passed through a 10 mesh sieve (1700 micrometers) and did not pass through a 20 mesh sieve (850 micrometers).
• the second fraction comprised the material passed through the 20 mesh sieve.
• the larger particles were needed to provide effective antistatic benefits at the lowest use level with clay/PDT.
• the smaller particles were too dispersible to deliver antistat.
• Effective antistat can be achieved at 3 grams on 20 mesh powder per wash (1.5 grams per pouch).
• Example 3 The following fabric softener composition formulas to be used in the rinse cycle was prepared in wt. % by simple mixing:
• Example 5 The following fabric softener composition formulas to be used in the rinse cycle was prepared in wt. % by simple mixing:

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  • 2003-07-29 DE DE60316570T patent/DE60316570T2/de not_active Expired - Lifetime
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