Soil-release Or Anti-soiling Component Patents (Class 510/517)
  • Patent number: 6242404
    Abstract: An improved soil release polymer composition comprising a soil release polymer and a long chain nonionic alkoxylate surfactant and/or amphoteric that is able to generate very low critical micelle concentration values in water. Preferably, the soil release composition is incorporated in a detergent system such as a commercial laundry detergent which comprises a second anionic, nonionic or cationic surfactant and mixtures thereof. By lowering the cmc values of the detergent wash water to very low levels, the surfactant greatly enhances the performance of the soil release polymer.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: June 5, 2001
    Assignee: Rhodia Inc.
    Inventors: Manilal S. Dahanayake, Gladys S. Gabriel, Ronald Brady Bell, Paul Joel Derian, Robert Gabriel
  • Patent number: 6191093
    Abstract: Cotton soil release polymers comprising water soluble and/or dispersible, modified polyamines having functionalized backbone moieties and improved stability toward bleach. Also, laundry detergent compositions comprising these cotton soil release polymers.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: February 20, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Randall Alan Watson, Eugene Paul Gosselink
  • Patent number: 6143712
    Abstract: The present invention relates to a liquid fabric softening composition comprising a cationic biodegradable fabric softener and an alkoxylated amino-functional polymer, whereby said combination provides an increased color care benefit on treated fabrics but also enables the use of higher levels of polymers without being detrimental to the stability of the composition.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: November 7, 2000
    Assignee: The Proctor & Gamble Company
    Inventors: Martine Irene Maria Beckers, Axel Masschelein
  • Patent number: 6127331
    Abstract: The present invention relates to laundry detergent compositions which comprise an alkoxylated polyalkyleneimine soil dispersant having the formula: ##STR1## wherein R is C.sub.2 -C.sub.6 linear alkylene, C.sub.3 -C.sub.6 branched alkylene, and mixtures thereof; B is a continuation by branching; E is an alkyleneoxy unit having the formula:--(R.sup.1 O).sub.m (R.sup.2 O).sub.n R.sup.3wherein R.sup.1 is 1,2-propylene, 1,2-butylene, and mixtures thereof; R.sup.2 is ethylene; R.sup.3 is hydrogen, C.sub.1 -C.sub.4 alkyl, and mixtures thereof; m is from about 1 to about 10; n is from about 10 to about 40; w, x, and y are each independently from about 4 to about 200; provided at least one --(R.sup.1 O) unit is attached to the backbone prior to attachment of an --(R.sup.2 O) unit and further provided m+n is at least 12, said dispersants are compatible with bleach. The disclosed alkoxylated polyalkyleneimines are also suitable for use as soil dispersant in bleach-containing laundry pre-soaks and bleaching agents.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: October 3, 2000
    Assignee: The Procter & Gamble Company
    Inventors: James Albert Cleary, Shulin Zhang, Eugene Paul Gosselink
  • Patent number: 6121226
    Abstract: Cotton soil release polymers comprising water soluble and/or dispersible, modified polyamines having functionalized backbone moieties and improved stability toward bleach. Also, laundry detergent compositions comprising these cotton soil release polymers having enhanced hydrophilic soil removal benefits in combination with a protease enzyme system are provided.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: September 19, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Eugene Paul Gosselink, Kenneth Nathan Price, Chanchal Kumar Ghosh
  • Patent number: 6103678
    Abstract: The present invention relates to a fabric treatment composition comprising a hydrophilic perfume and an amino-functional polymer, whereby effective perfume substantivity on the treated fabrics is obtained.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: August 15, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Axel Masschelein, Christiaan Arthur Jacques Kamiel Thoen
  • Patent number: 6087316
    Abstract: Cotton soil release polymers comprising water soluble and/or dispersible, modified polyamines having functionalized backbone moieties and improved stability toward bleach. Also, laundry detergent compositions comprising these cotton soil release polymers.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: July 11, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Randall Alan Watson, Eugene Paul Gosselink, Sanjeev Krishnadas Manohar
  • Patent number: 6083898
    Abstract: The invention relates to the use of crosslinked nitrogenous compounds which are soluble or dispersible in water and are obtainable by crosslinking of(a) compounds containing at least three NH groups with(b) at least bifunctional crosslinkers which react with NH groups,in detergents and cleaners, especially soil release agents.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: July 4, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Hubert Meixner, Ulrich Steuerle, Jurgen Decker, Wolfgang Paulus, Dieter Boeckh, Jurgen Alfred Lux, Beate Ehle
  • Patent number: 6071871
    Abstract: Cotton soil release polymers comprising water soluble and/or dispersible, modified polyamines having functionalized backbone moieties and improved stability toward bleach. Also, laundry detergent compositions comprising these cotton soil release polymers having enhanced hydrophilic soil removal benefits.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: June 6, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Eugene Paul Gosselink, Kenneth Nathan Price
  • Patent number: 6066612
    Abstract: The present invention encompasses detergent compositions comprising polymeric polycarboxylates and polyamine soil release agents. The composition has improved soil dispersancy properties, especially for polar soils.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: May 23, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Susumu Murata, Kenji Shindo, Ayako Muramatsu
  • Patent number: 6057278
    Abstract: Cotton soil release polymers comprising water soluble and/or dispersible, modified polyamines having functionalized backbone moieties and improved stability toward bleach. Also, laundry detergent compositions comprising these cotton soil release polymers having enhanced hydrophilic soil removal benefits.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: May 2, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Eugene Paul Gosselink, Kenneth Nathan Price
  • Patent number: 6020302
    Abstract: The present invention is a composition comprising a dye fixing agent and a specific aminon-functional polymer, said composition providing an improved color care on fabric upon laundry treatments.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: February 1, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Linda Josefina Anna Leurentop, Janet Sue Littig, Axel Masschelein
  • Patent number: 5981460
    Abstract: There is provided a detergent composition suitable for use in laundry and dish washing methods comprising (a) a cationic ester surfactant; and (b) a grease dispersing agent.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: November 9, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Ian Martin Dodd, Christiaan Arthur Thoen, Michael Alan John Moss
  • Patent number: 5922663
    Abstract: A composition comprising a conventional surfactant, a gemini surfactant and a polymeric soil release agent. The conventional surfactant comprises a hydrophilic group and a hydrophobic group. The gemini surfactant comprises two surfactant moieties attached to each other by a spacer moiety; each surfactant moiety having at least one hydrophilic group and at least one hydrophobic group. The polymeric soil release agent can be any conventional polymeric soil release agent, but preferably comprising PET-POET copolymer. The compositions are useful as surfactant additive packages, detergents and fabric softeners.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: July 13, 1999
    Assignee: Rhodia Inc.
    Inventors: Robert Gabriel, Gladys Saliba Gabriel, Mark David Einziger
  • Patent number: 5877145
    Abstract: Biodegradable fabric softener compounds that contain ester linkages a substantial level of polyunsaturation in the hydrophobic chains. The compounds can be used to form fabric softening compositions that are aqueous dispersions of the compounds or clear compositions. These compositions have a desirable low viscosity and recover, after freezing and thawing to have a stable low viscosity.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: March 2, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Errol Hoffman Wahl, Helen Bernardo Tordil, Toan Trinh, Eugene Robert Carr, Robert Otis Keys, Laura Marie Meyer, Hugo Jean Marie Demeyere, Dean Larry DuVal, Mitsuyo Okamoto
  • Patent number: 5861370
    Abstract: Biodegradable fabric softener premix compositions are described containing (1) biodegradable softener actives that contain substantial unsaturation and (2) perfume. The premixes can be added at ambient temperatures to water containing acid, to provide a pH of from about 1.5 to about 5, to form finished compositions. The water can also contain calcium and/or magnesium salt to modify the viscosity.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: January 19, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, George Joseph Harvey, Helen Bernardo Tordil, Hugo Jean Marie Demeyere, Marc Johan Declercq, Errol Hoffman Wahl
  • Patent number: 5858948
    Abstract: Liquid laundry detergent compositions comprising water soluble and/or dispersible, modified polyamines having functionalized backbone moieties which provide cotton soil release benefits (optionally in combination with non-cotton soil release agents) and protease enzymes.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: January 12, 1999
    Assignee: Procter & Gamble Company
    Inventors: Chanchal Kumar Ghosh, Sanjeev Krishnadas Manohar, Eugene Paul Gosselink, Randall Alan Watson
  • Patent number: 5851235
    Abstract: The present invention relates to a detergent composition comprising an amylase enzyme in combination with a nonionic polysaccharide ether for improved stain removal performance.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: December 22, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Gerard Marcel Baillely, Nour-Eddine Guedira, Robin Gibson Hall
  • Patent number: 5843192
    Abstract: The present invention provides a composition useful in a washing process containing at least one vinyl amide polymer. The vinyl amide polymer contains from 5 to 100 weight percent of at least one vinyl amide monomer, and from 0 to 95 weight percent of one or more vinyl ester monomers. The present invention also provides a method of cleaning an article and a method of providing soil resistance to an article using the vinyl amide polymer.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: December 1, 1998
    Assignee: Rohm and Haas Company
    Inventors: Thomas Cleveland Kirk, Curtis Schwartz, Richard James Tallent, Thomas Lawrence Pytlewski
  • Patent number: 5830845
    Abstract: Biodegradable fabric softener compounds that contain ester linkages a substantial level of polyunsaturation in the hydrophobic chains. The compounds can be used to form fabric softening compositions that are aqueous dispersions of the compounds. These compositions have a desirable low viscosity and recover, after freezing and thawing to have a stable low viscosity.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: November 3, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, George Joseph Harvey, Helen Bernardo Tordil, Errol Hoffman Wahl
  • Patent number: 5770558
    Abstract: The subject invention involves processes for making granular compositions comprising soil release polymers, the polymers comprising at least about 10% of substantially linear esters having a backbone; the esters being uncapped or end-capped on one or both ends of the backbone; the esters comprising in their backbones oxyalkyleneoxy units and hydrophobic aryldicarbonyl units; the esters having a molecular weight of from about 500 to about 20,000; the polymers if in solid state having the tendency when exposed to moisture to spontaneously rearrange from an amorphous form which is readily soluble in water to a crystalline form which is relatively insoluble in water; the process comprising the following steps:a) taking the soil release polymers, in which are dispersed from 0% to about 25% alkylaryl or alkyl sulfonate crystallization-reducing stabilizers, in molten state at a temperature of at least about 180.degree. C.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: June 23, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Benjamin Edgar Chapman, Michael Timothy Creedon
  • Patent number: 5767062
    Abstract: The present invention relates to compositions and processes which incorporate water-soluble polymers, other than enzymes, containing .dbd.N--C(.dbd.O)-- (including PVP) and/or N-oxide groups into the wash, rinse, and/or drying cycle of a laundering process (e.g., via fabric softening compositions) for dye transfer inhibition in the subsequent wash cycle. Multiple wash cycles optimize the dye transfer inhibitor performance of these polymers, remove unwanted dye discoloration caused by dye transfer, and provide soil antiredeposition benefits.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: June 16, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, Stephanie Lin-Lin Sung, Helen Bernardo Tordil, Paul Arthur Wendland
  • Patent number: 5759208
    Abstract: Heavy duty liquid or granular detergent compositions containing emulsions of silicone and selected emulsifying surfactants are disclosed. The silicone emulsions preferably have an average particle size of from about 20 to about 300 microns and provide exceptional cleaning and softening benefits.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: June 2, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Yueqian Zhen, Wilbur Cecil Strickland
  • Patent number: 5759990
    Abstract: Biodegradable fabric softener compounds that contain ester linkages a substantial level of polyunsaturation in the hydrophobic chains. The compounds can be used to form fabric softening compositions that are aqueous dispersions of the compounds or clear compositions. These compositions have a desirable low viscosity and recover, after freezing and thawing to have a stable low viscosity.
    Type: Grant
    Filed: October 21, 1996
    Date of Patent: June 2, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Errol Hoffman Wahl, Helen Bernardo Tordil, Toan Trinh, Eugene Robert Carr, Robert Otis Keys, Laura Marie Meyer
  • Patent number: 5750492
    Abstract: Cationic surfactant compound comprising, in the form of a quaternary ammonium salt, a product of condensation between, on the one hand a fraction of saturated or unsaturated fatty acids, or of derivatives of said acids chosen from the group comprising esters, anhydrides and acid chlorides, and on the other hand at least one tertiary amine, characterized in that, in combination:the alkyl chains of the tertiary amine together contain from 4 to 12 carbon atomsthe alkyl chains of the tertiary amine together contain from 1 to 4 functions each chosen from the group comprising hydroxyl and amine functionsthe fatty acids fraction/tertiary amine mole ratio is between 1.85 and 1.40the fatty acids each possess a hydrocarbon chain in which the number of carbon atoms is between 5 and 23.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: May 12, 1998
    Assignee: Stepan Europe
    Inventors: Jean-Pierre Contet, Stephane Courdavault Duprat, Yvan Storet, Jean-Francois Vindret
  • Patent number: 5730760
    Abstract: The present invention provides a fabric washing composition and aqueous treatment solution for inhibiting dye from transferring from one fabric to the same or different fabric in a fabric washing process. The fabric washing composition and aqueous treatment solution contain at least one dye deposition inhibiting polymer. The dye deposition inhibiting polymer contains, as polymerized units, from 5 to 100 weight percent of at least one vinyl amide monomer and from 0 to 95 weight percent of one or more vinyl ester monomers. The present invention also provides a method for inhibiting the deposition of dye by adding at least one of dye deposition inhibiting polymer useful in the present invention to a fabric washing process where dye may be released.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: March 24, 1998
    Assignee: Rohm and Haas Company
    Inventors: Thomas Cleveland Kirk, Curtis Schwartz, Richard James Tallent, Thomas Lawrence Pytlewski
  • Patent number: 5716918
    Abstract: The present invention relates to dryer-activated fabric softening compositions comprising: (A) fabric softening compounds; and (B) sulfonate and/or sulfonates having the formula (I), (Ia), or combinations thereof. ##STR1## wherein R and Z are independently selected from the group consisting of nonionic or anionic, substituted or unsubstituted C.sub.1 -C.sub.30 straight, branched or cyclic alkyl, alkenyl, alkynyl, alkylaryl or aryl group; Y is a radical that, upon hydrolysis of said sulfonate, forms an alcohol with a boiling point at 760 mm Hg of less than about 300.degree. C. which are perfumes.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: February 10, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Mark Robert Sivik, Frederick Anthony Hartman
  • Patent number: 5700386
    Abstract: The subject invention involves processes for making granular compositions comprising soil release polymers, the polymers comprising at least about 10% of substantially linear esters having a backbone; the esters being uncapped or end-capped on one or both ends of the backbone; the esters comprising in their backbones oxyalkyleneoxy units and hydrophobic aryldicarbonyl units; the esters having a molecular weight of from about 500 to about 20,000; the polymers if in solid state having the tendency when exposed to moisture to spontaneously rearrange from an amorphous form which is readily soluble in water to a crystalline form which is relatively insoluble in water; the process comprising the following steps:a) taking the soil release polymers, in which are dispersed from 0% to about 25% alkylaryl or alkyl sulfonate crystallization-reducing stabilizers, in molten state at a temperature of at least about 180.degree. C.
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: December 23, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Benjamin Edgar Chapman, Michael Timothy Creedon
  • Patent number: 5688758
    Abstract: There is provided a stable, concentrated fabric rinse composition comprising 0.3 to 10, preferably 0.3 to 3% by weight of a fluorescent whitening agent which is compatible with a fabric care ingredient, preferably a cationic, amphoteric or anionic fluorescent whitening agent, based on the total weight of the composition, and optionally a fabric care ingredient, preferably a fabric softener, a stain release or stain repellant ingredient or a water-proofing agent, the remainder being substantially water. The fabric rinse composition is preferably a fabric softener composition comprising 5 to 25, preferably 10 to 20% by weight of a cationic fabric softening agent and 0.3 to 10, preferably 0.3 to 3% by weight of a cationic, amphoteric or anionic fluorescent whitening agent, each based on the total weight of the composition, the remainder being substantially water.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: November 18, 1997
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Dieter Reinehr, Claude Eckhardt
  • Patent number: 5645751
    Abstract: A ready-to-use fabric composition and a fabric finish concentrate composition are disclosed as well as a method of providing a stiffness to a fabric. The compositions comprise water, a water soluble polymer that casts a clear, continuous film from aqueous solution and a film-compatible silicone ironing aid/lubricant that in combination dries on clothes or textiles as a colorless and transparent, flexible film. Optionally, a preservative and, in some instances other ingredients such as fragrances and dyes may be added for aesthetic purposes.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: July 8, 1997
    Assignee: Amway Corporation
    Inventor: Kalliopi S. Haley
  • Patent number: 5599782
    Abstract: Improved soil release agents for granular laundry detergents, typically used at levels as low as about 1% of a fully-formulated anionic surfactant-containing granular detergent, are reaction products of transesterifying and oligomerizing mixtures of monomers having the functions MO.sub.3 SC.sub.6 H.sub.4 C(O)--, M'O.sub.3 SC.sub.6 H.sub.3 {C(O)O--}.sub.2, --(O)CC.sub.6 H.sub.4 C(O)-- and --OCH.sub.2 CH.sub.2 O-- wherein M and M' are independently selected from lithium, potassium and sodium, more preferably sodium; said mixtures having mole ratio of MO.sub.3 SC.sub.6 H.sub.4 C(O)-- to --(O)CC.sub.6 H.sub.4 C(O)-- of from about 0.2:1 to about 1.4:1, mole ratio of MO.sub.3 SC.sub.6 H.sub.4 C(O)-- to M'O.sub.3 SC.sub.6 H.sub.3 {C(O)O--}.sub.2 of from about 0.67:1 to about 20:1 and mole ratio of MO.sub.3 SC.sub.6 H.sub.4 C(O)-- to --OCH.sub.2 CH.sub.2 O-- of from about 0.007:1 to about 0.51:1 and being substantially free from monomers of formula HOROH wherein R is propylene or higher alkyl.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: February 4, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Robert Y. L. Pan, Eugene P. Gosselink, Eugene J. Pancheri, Stephen W. Morrall
  • Patent number: 5545350
    Abstract: Compositions are disclosed containing fabric softener compound having two hydrophobic groups attached to the remainder of the compound through ester linkages (DEQA), said compositions being concentrated and containing viscosity/dispersibility modifiers which are single long chain cationic surfactants, highly ethoxylated nonionic surfactants and/or mixtures thereof. Premixes of the DEQA and viscosity modifiers to lower the viscosity of the molten DEQA are disclosed. Processes for making aqueous liquid compositions from solid particulate compositions containing the DEQA are also disclosed.
    Type: Grant
    Filed: November 3, 1994
    Date of Patent: August 13, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Ellen S. Baker, Jean-Francois Bodet, Hugo J. M. Demeyere, Frederick A. Hartman, Bruno A. Hubesch, Robert Mermelstein, Lucille F. Taylor, Errol H. Wahl
  • Patent number: 5545342
    Abstract: Antistatic, fabric softening and soil release promoting compositions are disclosed which comprise nonionic detergent, soil release promoting agent of the PET-POET type, and a certain type of silicone polymer (designated Type X or Silicone X). Such compositions very preferably also include cationic fabric softener (CFS), polyacrylate, silicone glycol copolymer (SGC), and builder for the nonionic detergent, with adjuvants being optional.Also within the invention are compositions that comprise only some of the mentioned components, and such compositions may be employed as wash cycle additives to improve the properties of detergent compositions and of softergent compositions. Processes for manufacturing and using the invented compositions are also disclosed.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: August 13, 1996
    Assignee: Colgate-Palmolive Co.
    Inventors: Charles A. Beagle, Richard P. Adams, Harold E. Wixon
  • Patent number: 5545340
    Abstract: The present invention relates to softening compounds; stable, homogeneous, preferably concentrated, aqueous liquid and solid textile treatment compositions; and intermediate compositions and/or processes for making said compositions. The compositions of the present invention contain diester quaternary ammonium compounds wherein the fatty acyl groups have an Iodine Value of from greater than about 5 to less than about 100, a cis/trans isomer weight ratio of greater than about 30/70 when the Iodine Value is less than about 25, the level of unsaturation being less than about 65% by weight, wherein said compounds are capable of forming concentrated aqueous compositions with concentrations greater than about 13% by weight at an Iodine Value of greater than about 10 without viscosity modifiers other than normal polar organic solvents present in the raw material of the compound or added electrolyte.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 13, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Errol H. Wahl, Dennis R. Bacon, Ellen S. Baker, Jean-Francois Bodet, Michael E. Burns, Hugo J. M. Demeyere, Charles A. Hensley, Robert Mermelstein, John C. Severns, John H. Shaw, Jr., Michael P. Siklosi, Alice M. Vogel, Jeffrey W. Watson
  • Patent number: 5536421
    Abstract: A method of softening fabrics where the consumer adds an effective amount of a particulate fabric softening composition comprising fabric softener agent to an automatic dosing dispenser with water, seals the dispenser, and places the automatic dosing dispenser into a washing machine at the beginning of the wash process. The mechanical agitation and/or heat of the wash cycle aids in forming a finely divided emulsion/dispersion of fabric softener agent which is then released from the dispenser during the rinse cycle.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: July 16, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Frederick A. Hartman, John R. Rusche, Lucille F. Taylor