Polycarboxylic Acid Component, Or Salt Thereof Patents (Class 510/223)
  • Patent number: 6239091
    Abstract: A detergent or rinse aid composition which reduces spotting and filming on glassware cleaned in an automatic dishwashing machine is described. The composition contains an effective amount of a water soluble cationic or amphoteric polymer having at least one monomer unit having a cationic charge over a portion of the pH range of about 2 to about 11 in the wash or rinse cycle.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: May 29, 2001
    Assignee: Lever Brothers Company, division of Conopco, Inc.
    Inventors: Alla Tartakovsky, Joseph Oreste Carnali, John Robert Winters
  • Patent number: 6228825
    Abstract: The present invention relates to a nonaqueous liquid automatic dishwashing composition disposed in a water soluble package that can be added directly into an automatic dishwasher.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: May 8, 2001
    Assignee: Colgate Palmolive Company
    Inventors: Philip Gorlin, Dennis Calabro, Erinn Martin, Melissa Fiore, Van Canady
  • Patent number: 6228824
    Abstract: A pink colored automatic dishwasher detergent composition is formulated as a gel-like aqueous product of exceptionally good physical stability, low bottle residue, low cup leakage, red color stability and improved cleaning performance. Linear viscoelasticity and pseudoplastic behavior is attributed by incorporation of cross-linked high molecular weight polyacrylic acid type thickener.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: May 8, 2001
    Assignee: Colgate-Palmolive Company
    Inventor: Philip Gorlin
  • Patent number: 6204231
    Abstract: An aqueous alkaline composition for cleaning equipment used in the food industry wherein the composition contains potassium hydroxide or a mixture of potassium hydroxide and sodium hydroxide and wherein the potassium hydroxide is present in an amount of at least 20% by weight, based on the weight of hydroxide present in the composition. A process for regenerating the cleaning solution is also disclosed.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: March 20, 2001
    Assignee: Henkel Kommandigesellschaft Auf Aktien
    Inventors: Anja Patten, Ralf Krack, Dietmar Rossner
  • Patent number: 6165970
    Abstract: There is provided a detergent composition comprising (a) an organic polymer containing acrylic acid or its salts, having an average molecular weight of less than 15,000; and (b) an amino tricarboxylic acid or its salts or complexes or any mixture thereof exhibiting improved soil and stain removal.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: December 26, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Fiona Susan Williams (nee Mac Beath), David Jonathan Kitko, Susumu Murata, Toshiko Tsunetsugu, Shuichi Tsunetsugu
  • Patent number: 6159922
    Abstract: Bleach compositions comprising a percarbonate bleach and an amino tricarboxylic acid exhibit a reduced tendency to deposit calcium carbonate insolubles on substrates being bleached. Laundry compositions comprising percarbonate bleach and methyl glycine diacetic acid are provided.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: December 12, 2000
    Assignee: The Procter & Gamble Company
    Inventor: Fiona Susan (Mac Beath) Williams
  • Patent number: 6147043
    Abstract: In machine dishwashing using low-alkaline detergents, the protection of silver was to be guaranteed. This was achieved by using 3-amino-5-alkyl-1,2,4-triazoles and salts thereof as silver protectors in machine dishwashing detergents. In addition, the dishwashing detergents may contain bleaching agents and builders.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: November 14, 2000
    Assignee: Henkel Kommanditgesellschaft Auf Aktien
    Inventors: Hinrich Moeller, Helmut Blum, Christian Nitsch, Juergen Haerer
  • Patent number: 6114294
    Abstract: The invention relates to the inhibition of tripolyphosphate and pyrophosphate scales in aqueous systems involving adding to said aqueous system at least one copolymer comprising the following monomers in polymerized form:(I) 50-80% by weight of one or more weak acids; (II) 2-50% by weight of one or more strong acids;(III) 0-30% by weight of one or more monoethylenically unsaturated C.sub.4 -C.sub.8 dicarboxylic acids; and(IV) 0-30% by weight of one or more monomethylenically unsaturated monomers polymerisable with (I), (II) and (III);wherein the total of monomers (I), (II), (III), and (IV) equals 100% by weight of copolymer.The invention is particularly suited to the inhibition of tripolyphosphate and pyrophosphate scales which occur as a result of using low phosphate (STPP) containing detergent formulations.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: September 5, 2000
    Assignee: Rohm and Haas Company
    Inventors: Francois Gauthier, Jan Shulman, Barry Weinstein, Andrea Keenan, Yves Duccini
  • Patent number: 5981457
    Abstract: The present invention relates to a concentrated liquid gel warewash detergent composition which contains about 5% to about 30% by weight of an alkali polyphosphate, about 8% to about 50% by weight of a source of alkalinity, about 0% to about 5% by weight of a surface active agent, about 0.1% to about 2% by weight of a hydrophilic crosslinkled polycarboxylate thickening agent, about 0.1% to about 2% by weight of a hydrogen bonding agent for the polycarboxylate, and about 0 to about 15% of a polyacrylate, the balance being water. The composition may also contain about 0% to about 3% by weight of a chlorine bleach. The composition is predissolved and can be accurately metered into warewash machines to clean and destain tablewares and dishwares.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: November 9, 1999
    Assignee: Kay Chemical Company
    Inventor: Fahim U. Ahmed
  • Patent number: 5981456
    Abstract: An automatic dishwashing detergent composition is described which contains an effective amount of a defined water soluble cationic or amphoteric polymer and a phosphate or nonphosphate builder. The polymers are soluble or dispersible to at least 0.01% by weight in distilled water at 25.degree. C. A method of using the polymers to prevent fading or corrosion of dishware is also described.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: November 9, 1999
    Assignee: Lever Brothers Company
    Inventors: Alla Tartakovsky, Joseph Oreste Carnali, Richard Gerald Gary
  • Patent number: 5977054
    Abstract: Disclosed are mildly acidic liquid compositions for use in cleaning hard surfaces. The compositions contain from about 1% to about 60% of an amine oxide detergent surfactant, an aqueous carrier liquid, and an acidifying agent having a pK.sub.a of less than about 6.0. The compositions contain enough of the acidifying agent to protonate at least about 10% of the amine oxide species within the compositions and to provide a composition pH of between about 3 and 7. These no-rinse liquid hard surface cleaning compositions have excellent cleaning properties, they do not leave a visible residue when they dry, and they cause minimal or no staining of vinyl surfaces. Also disclosed are a method for cleaning vinyl surfaces using the liquid compositions, and non-liquid compositions from which the mildly acidic liquid compositions can easily be obtained by adding an aqueous liquid.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: November 2, 1999
    Assignee: The Procter & Gamble Company
    Inventor: Thomas James Wierenga
  • Patent number: 5958855
    Abstract: The present invention relates to automatic dishwashing composition which can be in the form of a tablet which comprises an alkali metal phosphate detergent builder salt, an alkali carbonate, a dialkali metal disilicate, a nonionic surfactant, an alkali metal matasilicate polymer containing sulfonic acid groups, a chlorine bleach compound, a hydrotrope and a clay.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: September 28, 1999
    Assignee: Colgate Palmolive Company
    Inventors: Gary Binstock, Bruce Cummings, Divaker Kenkare, Kevin Kinscherf, Steve Phillips
  • Patent number: 5942481
    Abstract: The caustic cleaner of the present invention has a freezing point of no more than about 40.degree. F. The caustic cleaner is a mixture of aqueous sodium hydroxide and an organic salt derived from the reaction of sodium hydroxide and gluconic acid at elevated temperatures.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: August 24, 1999
    Assignee: Charvid Limited Liability Co.
    Inventor: Charles Bullick Talley
  • Patent number: 5922664
    Abstract: Aqueous detergent concentrates containing a mixture of two or more surfactants having a differing resistance to electrolytic salting out in the form of micellar solutions and having pourable viscosities are converted into lamellar solutions upon dilution with water where the dispersion contains a viscosity promoting electrolyte present at a narrow range of concentration. Transformation from the micellar phase to the lamellar phase produces an increase in viscosity such that the diluted concentrate has a viscosity equal to or higher than the viscosity of the original concentrate.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: July 13, 1999
    Assignee: Colgate-Palmolive Co.
    Inventors: Hoai-Chau Cao, Patricia Pagnoul
  • Patent number: 5906972
    Abstract: Novel liquid detergent compositions are provided which contain a high purity amphoteric surfactant, one or more anionic surfactants and a nonionic foam boosting compound.
    Type: Grant
    Filed: June 11, 1996
    Date of Patent: May 25, 1999
    Assignee: Rhodia Inc.
    Inventors: Gladys Saliba Gabriel, Ronald B. Bell, Mark Einziger
  • Patent number: 5858944
    Abstract: Polycarboxylate additives suitable for use in automatic dishwasher detergent compositions are prepared by polymerizing three or more monomers including monoethylenically unsaturated C.sub.3 to C.sub.6 monocarboxylic acids such as acrylic acid, monoethylenically unsaturated C.sub.4 to C.sub.6 dicarboxylic acids such as maleic acid, and monoethylenically unsaturated esters of acrylic or methacrylic acid. Automatic dishwasher detergents prepared from these additives produce low filming and spotting on washed glassware.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: January 12, 1999
    Inventors: Andrea Claudette Keenan, Thomas Cleveland Kirk, Thomas Francis McCallum, III, Jan Edward Shulman, Richard James Tallent, Barry Weinstein
  • Patent number: 5804541
    Abstract: A floor stripper composition is provided, having a pH-value above 9.0, and comprising a soap, water and a glycine-N,N-diacetic acid compound, which is preferably methylglycine diacetic acid (MGDA). The diacetic acid is desirably in the form of a divalent metal complex thereof. A process is also provided for removing a zinc containing acrylate polymer film from a floor surface, wherein a floor stripper composition of the invention is applied. A good floor stripper performance could be obtained with this composition owing to its low foaming behaviour.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: September 8, 1998
    Assignee: Diversey Lever, Inc.
    Inventor: Josef Jans
  • Patent number: 5789372
    Abstract: Surfactant mixtures having improved surface-active properties containinga) fatty acid-N-alkyl polyhydroxyalkylamides corresponding to formula (I): ##STR1## in which R.sup.1 CO is an aliphatic acyl radical containing 6 to 10 carbon atoms, R.sup.2 is hydrogen, an alkyl or hydroxyalkyl radical containing 1 to 4 carbon atoms and ?Z! is a linear or branched polyhydroxyalkyl radical containing 3 to 12 carbon atoms and 3 to 10 hydroxyl groups, andb) fatty acid-N-alkyl polyhydroxyalkylamides corresponding to formula (II): ##STR2## in which R.sup.3 CO is an aliphatic acyl radical containing 12 to 22 carbon atoms, R.sup.4 is hydrogen, an alkyl or hydroxyalkyl radical containing 1 to 4 carbon atoms and ?Z! is a linear or branched polyhydroxyalkyl radical containing 3 to 12 carbon atoms and 3 to 10 hydroxyl groups,the ratio by weight between components a) and b) being from 80:20 to 20:80.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: August 4, 1998
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventor: Bernd Fabry
  • Patent number: 5789362
    Abstract: There is provided a detergent composition comprising lipoxidase enzymes. The lipoxidase enzyme is preferably incorporated into the composition at a level of from 0.0001% to 2% active enzymes by weight of the composition.
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: August 4, 1998
    Assignee: The Procter & Gamble Co.
    Inventors: Andre Baeck, Alfred Busch, Peter Robert Foley, Lynda Anne Jones, Kofi Ofosu-Asante
  • Patent number: 5783539
    Abstract: A composition and method for inhibiting lead corrosion of fine tableware washed in automatic dishwashers is disclosed. The detergent composition comprises an aluminum-sequestrant complex formed by binding the aluminum by a sequestrant in a premix, which is then processed with other detergent components. The composition has a pH of less than about 10 and is substantially free of silicates.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: July 21, 1998
    Assignee: Lever Brothers Company
    Inventors: Petrus Andrianus Angevaare, Richard Gerald Gary
  • Patent number: 5772786
    Abstract: A method of cleaning soiled dishes comprising contacting said dishes with a composition comprising a lipased derived from pseudomonas pseudolacaligenes, a lime soap dispersant having an lime soapdispersing power of no more than eight, and a suds suppressing agent which contains either a silicone suds suppressing agent or a 2-alkyl alcanol suds suppressing agent.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: June 30, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Beatrijs Lutgarde A. De Smet, Johan Gerwin L. Pluyter, Lynda Anne Jones
  • Patent number: 5759989
    Abstract: Stable aqueous emulsions comprising dipicolinic acid or certain derivatives thereof and hydrophilic and hydrophobic nonionic surfactants are disclosed, as well as a process for preparing said compositions. The dipicolinic acid and derivatives thereof build viscosity in said compositions.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: June 2, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Stefano Scialla, Sergio Cardola, Giulia Ottavia Bianchetti
  • Patent number: 5741767
    Abstract: A warewashing composition for a machine dishwasher and a method of using it is described. The composition comprises effective amounts of an organic peroxy acid, and an amylase enzyme which, when incubated at 55.degree. C. in a solution of 2 mM sodium citrate, 1 mM epsilon phthalimidoperoxyhexanoic acid in 36 ppm water at pH 8.0, has a half-life of two minutes or greater based on an activity vs. time plot obtained via monitoring color development at 405 nm of solution samples incubated with p-nitrophenyl-.alpha.-D-maltoheptaoside as substrate and gluco amylase and .alpha.-glucosidase as coupled enzymes; and 1% to 75% by weight of a builder. A 1% aqueous solution of the composition must have a pH of less than 10.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: April 21, 1998
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: John Richard Nicholson, Isaac Israel Secemski, Deborah Sue Rick, Duane Anthony Raible
  • Patent number: 5733858
    Abstract: Solutions comprising at least one polyamino disuccinic acid and one or more polyamino monosuccinic acids are useful in gas conditioning (preferably as the iron chelate). The copper chelates are also useful in electroless copper plating. Another aspect of the invention includes the use of the aminosuccinic acid mixtures in laundry detergent compositions.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: March 31, 1998
    Assignee: The Dow Chemical Company
    Inventors: David A. Wilson, Druce K. Crump
  • Patent number: 5726141
    Abstract: Low sudsing dishwashing detergent compositions which exhibit good grease emulsification performance comprise branched alkyl carboxylate detergent surfactants and long chain amine oxide. A preferred embodiment contains anionic or nonionic co-surfactants.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: March 10, 1998
    Assignee: The Procter & Gamble Company
    Inventor: Kofi Ofosu-Asante
  • Patent number: 5723655
    Abstract: The present invention relates to an amine compound represented by the following general formula (1): ##STR1## wherein R.sup.1 and R.sup.2 represent individually a linear or branched C.sub.1 -C.sub.24 alkyl or alkenyl group which may be substituted by a hydroxyl group, X.sup.1 represents a C.sub.1 -C.sub.6 alkylene or alkenylene group which may be substituted by a hydroxyl, sulfonic or carboxyl group, Y.sup.1 represents a carboxyl or sulfonic group, or a sulfuric acid residue, Y.sup.2 represents a hydroxyl group, a sulfuric acid residue or a group --OCO--X.sup.1 --COOH, Z represents a sulfoalkyl group or a group obtained by removing an amino group from an amino acid or a salt thereof, and n represents a number of 0 or 1, or a salt or quaternized product thereof, an intermediate useful for the preparation thereof, and detergent compositions containing such an amine compound.
    Type: Grant
    Filed: January 7, 1997
    Date of Patent: March 3, 1998
    Assignee: Kao Corporation
    Inventors: Mitsuru Uno, Tomohito Kitsuki, Katsumi Kita
  • Patent number: 5698507
    Abstract: An automatic dishwashing compositions containing a mixture of an acid resistant protease enzyme and an acid resistant amylase enzyme have been found to be very useful in the removal of protein and carbohydrate soils from dishware at operating temperatures of 100.degree. F. to 140.degree. F.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: December 16, 1997
    Assignee: Colgate-Palmolive Co.
    Inventors: Philip A. Gorlin, Divaker Kenkare, Steve Phillips
  • Patent number: 5698506
    Abstract: A composition and method for inhibiting lead corrosion of fine tableware washed in automatic dishwashers is disclosed. The composition comprises an aluminum salt which dissolves at a rate to deliver less than 0.56 mM aluminum(III) per minute at 42.degree. C. to a wash liquor, a bleaching agent, a builder and optionally a surfactant. The composition has a pH of less than about 10 and is substantially free of silicates.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: December 16, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Petrus Andrianus Angevaare, Richard Gerald Gary
  • Patent number: 5691300
    Abstract: A process for rinsing hard surfaces comprising contacting the hard surfaces with an aqueous rinse aid composition containing fatty acid-N-alkyl polyhydroxyalkyl amides corresponding to formula I: ##STR1## wherein R.sup.1 CO is an aliphatic acyl radical containing 6 to 22 carbon atoms, R.sup.2 is hydrogen, an alkyl or hydroxyalkyl radical containing 1 to 4 carbon atoms, and ?Z! is a linear or branched polyhydroxyalkyl radical containing 3 to 10 carbon atoms and 3 to 10 hydroxyl groups.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: November 25, 1997
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Bernd Fabry, Juergen Haerer, Birgit Burg, Marica Nejtek, Peter Jeschke, Udo Hees
  • Patent number: 5691292
    Abstract: A viscoelastic, thixotropic, liquid automatic dishwashing detergent composition which is substantially free of chlorine bleach and silicate and contains enzyme(s), an enzyme stabilizing system, and a detergent surfactant or detergent builder is provided. It has a product pH between about 7 and about 11.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: November 25, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Janet Layne Marshall, David Lee Hall, Hal Ambuter, Edward Paul Fitch
  • Patent number: 5686402
    Abstract: Laundry detergent compositions containing a detergent surfactant, a detergent builder, and from about 0.1% to about 50% by weight ethylene dicysteate or its acid form are disclosed. These compositions provide enhanced removal of organic stains, such as food and beverage stains particularly polyphenolic stains such as wine, blueberry, tea, coffee, morello juice and the like.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: November 11, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Eddie Nelson Gutierrez, Shang-Ren Wu, Robert Vermeer
  • Patent number: 5665693
    Abstract: Use of carboxyl-containing reaction products of(a) maleic anhydride, maleic acid and/or fumaric acid, and(b) proteins or protein hydrolyzateshaving an acid number of at least 1.5 mmol of NaOH/g of reaction product, as ingredient of reduced-phosphate and phosphate-free detergents and cleaners.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: September 9, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Kroner, Gunnar Schornick, Richard Baur, Alexander Kud, Volker Schwendemann
  • Patent number: 5656646
    Abstract: Mixtures of(I)polymers of monoethylenically unsaturated dicarboxylic acids having a molecular weight of from 200 to 5,000 and(II)(1) copolymers having a molecular weight of from 10,000 to 150,000 and comprising(a) from 10 to 70% by weight of monoethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic acids or the salts thereof and(b) from 30 to 90% by weight of monoethylenically unsaturated C.sub.3 -C.sub.10 -monocarboxylic acids and/or the salts thereof,(2) graft polymers having a molecular weight of from 5,000 to 150,000, which are obtainable by free radical graft polymerization of(A) monoethylenically unsaturated C.sub.3 -C.sub.10 -carboxylic acids or the anhydrides and/or the salts thereof in the presence of(B) mono-, oligo- or polysaccharides and the derivatives thereof in a weight ratio (A) : (B) of (95 to 20) : (5 to 80), and/or(3) polyaminocarboxylic acids and/or polymers containing aminocarboxylic acid groupscontain the components (I) and (II) in a weight ratio of from 10 : 0.5 to 0.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: August 12, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Perner, Paul Diessel, Helmut Guembel, Walter Denzinger, Heinrich Hartmann, Matthias Kroner
  • Patent number: 5624892
    Abstract: A composition and method for inhibiting lead corrosion of fine tableware washed in automatic dishwashers is disclosed. The detergent composition comprises an aluminum-sequestrant complex formed by binding the aluminum by a sequestrant in a premix, which is then processed with other detergent components. The composition has a pH of less than about 10 and is substantially free of silicates.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: April 29, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Petrus A. Angevaare, Richard G. Gary
  • Patent number: 5618465
    Abstract: Nonaqueous liquid automatic dishwashing compositions containing a mixture of a protease enzyme and an amylase enzyme have been found to be very useful in the removal of protein and carbohydrate soils from dishware at operating temperatures of 100.degree. F. to 140.degree. F.
    Type: Grant
    Filed: July 21, 1994
    Date of Patent: April 8, 1997
    Assignee: Colgate Palmolive Co.
    Inventors: Patrick Durbut, Fahim U. Ahmed, Julien Drapier
  • Patent number: 5616546
    Abstract: Improved automatic dishwashing detergent compositions, especially granular detergents, comprising bleach activators which form multiperacids, especially specific monoquaternary substituted bis(peroxycarbonic) acids, upon perhydrolysis are provided.
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: April 1, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Gregory S. Miracle, Mark R. Sivik
  • Patent number: 5597509
    Abstract: The present invention provides an efficient aqueous polymerization process for preparing a water soluble polymer product having a molecular weight of less than 30,000. The polymer product is formed from about 3 to about 50 weight percent of at least one monoethylenically unsaturated dicarboxylic acid monomer, from about 50 to about 97 weight percent of at least one monoethylenically unsaturated monocarboxylic acid monomer, and from 0 to about 40 weight percent of one or more carboxyl-free monoethylenically unsaturated monomers. The process of the present invention may be run as a batch or continuous process. The process uses at least one chain transfer agent and is conducted at an aqueous solution pH of about 3 or less to keep the molecular weight of the polymer product below 30,000. The polymer product produced by the process of the present invention is useful as an additive in detergents, cleaning formulations, and water circulating systems.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 28, 1997
    Assignee: Rohm and Haas Company
    Inventors: Thomas C. Kirk, David Witiak
  • Patent number: 5591703
    Abstract: Liquid or granular automatic dishwashing detergent compositions comprising builder, enzyme and low molecular weight modified polyacrylate copolymers for enhanced hard water filming and enzyme performance.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: January 7, 1997
    Assignee: The Procter & Gamble Company
    Inventor: Eugene S. Sadlowski
  • Patent number: 5584888
    Abstract: Bleaching compositions, laundry and automatic dishwashing detergent compositions comprising particular neutral or anionically charged substituted bleach activators are provided. More specifically, the invention relates to compositions which provide enhanced cleaning/bleaching benefits through the selection of perhydrolysis-selective bleach activators having specific leaving groups with a conjugate acid pK.sub.a above 13 and with specific ratios of the rate of perhydrolysis to the rate of hydrolysis and the rate of perhydrolysis to the rate of diacylperoxide production. Included are preferred activator compounds and methods for washing fabrics, hard surfaces, and tableware using the activators.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: December 17, 1996
    Inventors: Gregory S. Miracle, Alan D. Willey, Kevin L. Kott, Michael E. Burns
  • Patent number: 5578136
    Abstract: Automatic dishwashing detergent compositions, comprising particular quaternary-substituted bleach activators, are provided. More specifically, the invention relates to granular automatic dishwashing detergents which provide enhanced cleaning/bleaching benefits through the selection of quaternary-substituted bleach activators having specific features, such as caprolactam or valerolactam leaving groups and/or the ability to form particular cationic aliphatic peracid structures in solution. Preferred automatic dishwashing compositions comprise amylase enzymes. Included are preferred activator compounds and methods for washing tableware in domestic automatic dishwashing appliances using the activators.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: November 26, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Lucille F. Taylor, Mark R. Sivik, Alan D. Willey, James C. T. Burckett-St. Laurent, Frederick A. Hartman
  • Patent number: 5545344
    Abstract: A phosphate-free liquid dishwashing composition containing at least one protease enzyme and an amylase enzyme has been found to be very useful as an automatic dishwasher composition.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: August 13, 1996
    Assignee: Colgate-Palmolive Co.
    Inventors: Patrick Durbut, Fahim Ahmed, Julien Drapier
  • Patent number: 5545352
    Abstract: There is provided a rinse aid composition containing a chelant component selected from ethylenediamine disuccinic acid ethylenediamine diglutaric acid (EDDG), 2 hydroxypropylenediamine-disuccinic acid (HPDDS) or any of the salts or complexes of said chelant components. The pH of said composition as a 1% solution in distilled water at 20.degree. C. is preferably less than 7.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: August 13, 1996
    Assignee: The Procter & Gamble Company
    Inventor: Christopher G. Pike