Process Of Preparing (other Than Mere Combining Of Components) Patents (Class 510/326)
  • Patent number: 8618039
    Abstract: A granular material for use in the treating of textile materials, comprising (i) a silicone material having at least one nitrogen containing substituent, (ii) an aluminosilicate carrier and (iii) a binder, preferably in conjunction with a surface active material. Also described is a process for preparing such granular materials, which comprises forming a water-in-oil emulsion of component (i) in conjunction with component (iii) by dispersing and agitating said components in water, followed by depositing said emulsion onto a free flowing powder form of component (ii), for example by spraying, and removing sufficient water from the product to obtain a free flowing granular material. The granules are useful in a process of treating textile materials in an aqueous medium, particularly where the textile material is denim. Preferably the granular material is added into the finishing steps of denim such as the desizing, the fading or the softening steps and helps with avoiding backstaining.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: December 31, 2013
    Assignees: Dow Corning India, Dow Corning Corporation
    Inventors: Ganesh Srinivasan, Anick Colson, Alice Devinat, Jacqueline L'Hostis, Padmadas Nair
  • Publication number: 20110257066
    Abstract: Preparation of solid free flowing detergent composition by spray drying a chemically simple slurry as well as compositions comprising chemically simple spray dried particles
    Type: Application
    Filed: April 11, 2011
    Publication date: October 20, 2011
    Inventors: Nigel Patrick Somerville Roberts, Hossam Hassan Tantawy, James Robert Lickiss, Paul R. Mort, III
  • Patent number: 7915214
    Abstract: A cleansing or a surface-conditioning composition comprising a mixture of (i) and (ii) in water: i) a surfactant selected from the group consisting of anionic, non-ionic, zwitterionic, cationic, and mixtures thereof, and ii) a hydrophobic benefit agent in a particulate form having a mean particle size in the range of 1-1,000 micron, and a specific gravity of ?1, not encapsulated within a film or a capsule-like enclosure, the particulate hydrophobic benefit agent comprising: a) a physically-modified form of the hydrophobic benefit agent; and b) a deposition-aid material bonded to the surface of the physically-modified benefit agent material, wherein the bonding between the two said materials is achieved prior to addition to i), wherein said deposition-aid material is not a surfactant having a weight average molecular weight of less than 5,000 Dalton.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: March 29, 2011
    Assignee: Amcol International Corporation
    Inventors: Ashoke K. SenGupta, Ilona Lin, Jason St. Onge
  • Patent number: 7897555
    Abstract: Microcapsules for use in liquid detergents having a core and a polyelectrolyte complex shell in the form of a semipermeable membrane comprising a particulate permeability-regulator. The invention also relates to a process for making the microcapsules and liquid detergents comprising said microcapsules.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: March 1, 2011
    Assignee: The Procter & Gamble Company
    Inventors: Walter August Maria Broeckx, Eva Martin Del Valle
  • Patent number: 7888306
    Abstract: A cleansing or a surface-conditioning composition comprising a mixture of (i) and (ii) in water: i) a surfactant selected from the group consisting of anionic, non-ionic, zwitterionic, cationic, and mixtures thereof; and ii) a hydrophobic benefit agent in a particulate form having a mean particle size in the range of 1-1,000 micron, and a specific gravity of ?1, not encapsulated within a film or a capsule-like enclosure, the particulate hydrophobic benefit agent comprising: a) a physically-modified form of the hydrophobic benefit agent; and b) a deposition-aid material bonded to the surface of the physically-modified benefit agent material, wherein the bonding between the two said materials is achieved prior to addition to i), wherein said deposition-aid material is not a surfactant having a weight average molecular weight of less than 5,000 Dalton.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: February 15, 2011
    Assignee: Amcol International Corporation
    Inventors: Ashoke K. SenGupta, Ilona Lin, Jason St. Onge, Melanie J. Hughes
  • Patent number: 7871972
    Abstract: A cleansing or a surface-conditioning composition comprising a mixture of (i) and (ii) in water: i) a surfactant selected from the group consisting of anionic, non-ionic, zwitterionic, cationic, and mixtures thereof; and ii) a hydrophobic benefit agent in a particulate form having a mean particle size in the range of 1-1,000 micron, and a specific gravity of ?1, not encapsulated within a film or a capsule-like enclosure, the particulate hydrophobic benefit agent comprising: a) a physically-modified form of the hydrophobic benefit agent; and b) a deposition-aid material bonded to the surface of the physically-modified benefit agent, wherein the bonding between the benefit agent and the deposition-aid material is achieved prior to addition to i), wherein said deposition-aid material is not a surfactant having a weight average molecular weight of less than 5,000 Dalton.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: January 18, 2011
    Assignee: AMCOL International Corporation
    Inventor: Ashoke K. SenGupta
  • Patent number: 7855173
    Abstract: A cationic oil-in-water emulsion, for addition to detersive compositions, comprising hydrophilic cationic polymers, a surface-active, anionic polymer that is capable of adsorbing at an air-water interface or an oil-water interface and/or is oil-soluble, and a hydrophobic benefit agent in the oil phase made by adding the benefit agent to a hydrophobic liquid; thickening the oil phase with an organophillic smectite clay reacted at clay platelet surfaces to make the clay platelet surfaces hydrophobic while the edge surfaces of the clay remain hydrophilic, such that the organophillic smectite clay is adsorbed at an oil/water interface in the emulsion, and one of the hydrophilic, cationic polymers has a cationic nitrogen content of at least 6% by weight, that is incompatible with anionic surfactants, being insoluble in anionic-surfactant solutions containing an amount of 3% or higher of an anionic surfactant, and another hydrophilic cationic polymer has a cationic nitrogen content of at least 0.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: December 21, 2010
    Assignee: Amcol International Corporation
    Inventors: Ashoke K. SenGupta, Ilona Lin, Jason Harold St. Onge
  • Patent number: 7842658
    Abstract: The invention describes a stable and transparent liquid washing agent or liquid cleaning agent having a graying-inhibiting polysaccharide that has a particle size smaller than 100 nm. The invention also relates to the use of the liquid washing agent or liquid cleaning agent, and to a method for the manufacture thereof.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: November 30, 2010
    Assignee: Henkel AG & Co. KGaA
    Inventors: Bernhard Guckenbiehl, Sören Hölsken, Carine Wattebled
  • Patent number: 7670389
    Abstract: The use of water-soluble or water-dispersible polymers obtainable by reaction of (a) polyalkylenepolyamines, polyamidoamines or ethyleneimine-grafted polyamidoamines or mixtures thereof, (b) if desired at least bifunctional crosslinkers and (c) monoethylenically unsaturated carboxylic acids, salts, esters, amides or nitriles of monoethylenically unsaturated carboxylic acids, chlorocarboxylic acids and/or glycidyl compounds, said component (a) having an average molecular weight Mw in the range from 20 000 to 2 000 000 and the molar ratio of the hydrogen atoms on the nitrogen in said component (a) to said component (b) being in the range from 1:0.7 to 1:0.9, as a laundry detergent additive.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: March 2, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Heike Becker, Volker Braig, Lidcay Herrera Taboada
  • Patent number: 7638476
    Abstract: Aqueous washing and cleaning agents that contain capsules in addition to other constituents, the capsules each encompassing an active ingredient in a matrix. The introduction of a combination of aluminum silicate and silicic acid into the matrix improves the solubility characteristics of the capsules in a washing operation.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: December 29, 2009
    Assignee: Henkel AG & Co. KGaA
    Inventors: Bernhard Orlich, Bernd Richter, Sören Hölsken, Stefan Van Der Burgh
  • Patent number: 7569533
    Abstract: A cationic oil-in-water emulsion, for addition to detersive compositions, comprising hydrophilic cationic polymers, a surface-active, anionic polymer that is capable of adsorbing at an air-water interface or an oil-water interface and/or is oil-soluble, and a hydrophobic benefit agent in the oil phase made by adding the benefit agent to a hydrophobic liquid; thickening the oil phase with an organophillic smectite clay reacted at clay platelet surfaces to make the clay platelet surfaces hydrophobic while the edge surfaces of the clay remain hydrophilic, such that the organophillic smectite clay is adsorbed at an oil/water interface in the emulsion, and one of the hydrophilic, cationic polymers has a cationic nitrogen content of at least 6% by weight, that is incompatible with anionic surfactants, being insoluble in anionic-surfactant solutions containing an amount of 3% or higher of an anionic surfactant, and another hydrophilic cationic polymer has a cationic nitrogen content of at least 0.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: August 4, 2009
    Assignee: Amcol International Corporation
    Inventors: Ashoke K. SenGupta, Ilona Lin, Jason St. Onge
  • Patent number: 7435715
    Abstract: Microcapsules for use in liquid detergents having a core and a polyelectrolyte complex shell in the form of a semipermeable membrane capable of withstanding a force before bursting of from about 20 mN to about 20,00 N and having a density of from about 900 Kg/m3 to about 1,300 Kg/m3 at 25° C. The invention also relates to a process for making the microcapsules and liquid detergents comprising said microcapsules.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: October 14, 2008
    Assignee: The Procter & Gamble Company
    Inventors: Walter August Maria Broeckx, Roger Jeffrey Jones
  • Patent number: 7345016
    Abstract: The present invention relates to compositions comprising photosenitizer that can be used to provide lipophilic fluids with bleaching capabilities, lipophilic fluid cleaning compositions having bleaching capabilities and processes of making and using same. Such compositions provide the cleaning benefits of typical lipophilic solvents and additional cleaning benefits that include bleaching.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: March 18, 2008
    Assignee: The Procter & Gamble Company
    Inventors: Alan David Willey, Brian Jeffreys, Anthony Harriman, Vladimir Garstein, William Michael Scheper
  • Patent number: 7285522
    Abstract: The invention provides methods, compositions and kits for increasing the brightness retention of a fabric laundered using a hypohalite-generating bleach by employing an amount of bromide-releasing compound sufficient to provide between 0.1 to about 1.5 moles of bromine ion to mole of available chlorine in a wash liquor to mitigate the negative effects of said hypohalite bleach on the optical brightener present in either the wash liquor or on said fabric. The invention also applies to fabrics washed using commercial laundry detergents which typically deliver an optical brightener into said wash liquor, said optical brightener generally exhibiting instability in the presence of said hypohalite bleaches.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: October 23, 2007
    Assignee: The Clorox Company
    Inventor: Gregory van Buskirk
  • Patent number: 7235518
    Abstract: Fabric conditioning compositions comprising a fabric care active and a hueing dye, wherein the hueing dye exhibits a hueing efficiency of at least about 20 according to the Hueing Efficiency Test method; and a Wash Removal Value from about 50% to about 98%, are useful in mitigating the discoloration of white and other light colored fabrics.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: June 26, 2007
    Assignee: The Procter & Gamble Company
    Inventors: Lisa Grace Brush, Errol Hoffman Wahl, Jodi Lee Brown, Marena Dessette Brown, Shulin Larry Zhang, Michael David Cummings, Eugene Steven Sadlowski
  • Patent number: 6593286
    Abstract: Consumer product compositions such as laundry detergents comprising selected photosensitive compounds for photobleaching, photodisinfection, antibacterial activity, hueing or other benefits. The compositions are preferably formulated with detersive surfactants and/or water-soluble polymers.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: July 15, 2003
    Assignee: Case Western Reserve University
    Inventors: Malcolm Edward Kenney, Ying-Syi Li, Rafael Ortiz, David Johnathan Kitko, Michael Eugene Burns
  • Patent number: 6544296
    Abstract: The present invention relates to substrate comprising fabric, the substrate treated with a composition comprising: a) an aldehyde, said aldehyde a mono-functional aldehyde, a di-functional aldehyde, or mixtures thereof; b) a polyethylene glycol having the formula: R(OCH2CH2)xOR  wherein R is hydrogen, C1-C4 alkyl, and mixtures thereof, and the index x has a value of 15 to 45; c) an acid catalyst; and d) optionally, a surface modifying agent; wherein the treated substrate has at least three enhanced fabric benefits, said benefits selected from the group consisting of: i) durable press; ii) hand feel; iii) anti-abrasion; iv) anti-shrinkage; and v) anti-yellowing. The present invention further relates to a system and a process for providing a substrate having the above described enhanced fabric benefits.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: April 8, 2003
    Assignee: The Proctor & Gamble Company
    Inventors: Robb Richard Gardner, Janet Sue Littig, Mark Robert Sivik
  • Patent number: 6436888
    Abstract: The invention relates to a variant of a parent Termamyl-like a-amylase, which variant has a-amylase activity and exhibits an alteration in at least one of the following properties relative to parent a-amylase: substrate specificity, substrate binding, substrate cleavage pattern, thermal stability, pH/activity profile, pH/stability profile, stability towards oxidation, Ca2+ dependency and specific activity.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: August 20, 2002
    Assignee: Novozymes A/S
    Inventors: Allan Svendsen, Torben Vedel Borchert, Henrik Bisgård-Frantzen
  • Patent number: 6159920
    Abstract: A detergent composition comprises detergent particles, each particle having a substantially anhydrous coating comprising a fluorescent whitening agent and a nonionic surfactant. A process for the preparation of the said detergent composition comprises spraying base detergent particles with a substantially anhydrous mixture comprising the fluorescent whitening agent and the nonionic surfactant.
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: December 12, 2000
    Assignee: The Proctor & Gamble Company
    Inventor: Mark William Ridyard
  • Patent number: 6143708
    Abstract: The invention relates to a variant of a parent Termamyl-like .alpha.-amylase, which variant has a-amylase activity and exhibits an alteration in at least one of the following properties relative to said parent a-amylase: substrate specificity, substrate binding, substrate cleavage pattern, thermal stability, pH/activity profile, pH/stability profile, stability towards oxidation, Ca.sup.2+ dependency and specific activity.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: November 7, 2000
    Assignee: Novo Nordisk A/S
    Inventors: Allan Svendsen, Torben Vedel Borchert, Henrik Bisg.ang.rd-Frantzen
  • Patent number: 6139587
    Abstract: A method for laundering non-structured garments which are unsuitable for water washing and which are to be cleaned without wrinkling, shrinkage or color damage.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: October 31, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Harikrishnan Achuthan Nair, Melissa LeAnn Campbell
  • Patent number: 6133215
    Abstract: There is provided a white crystal form of the compound having the formula: ##STR1## whose crystal form is characterised by an X-ray diffraction diagram which is essentially as shown in Table I, II or III. Also provided is a formulation comprising from 10 to 85% by weight of the white crystal form of compound having the formula (1) and from 90 to 15% by weight of a polyhydroxy compound, preferably glycerine.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: October 17, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Josef Zelger, Andreas Burkhard, Serge Schroeder, Bernard Schultz
  • Patent number: 6080711
    Abstract: A powdered laundry detergent is provided with (a) a powder laundry detergent base that includes an inorganic carrier and a surfactant and (b) post-added acidulant and discrete whitening agent particles to provide a detergent having improved cool water solubility with bulk color deterioration caused by whitening agents being minimized. The detergent includes from about 5% to about 80% of an inorganic carrier, from about 1% to about 90% of a detergent surfactant, from about 0.1% up to about 15% of an acidulant and from about 0.1% up to about 30% of the discrete whitening agent particles. The acidulant is selected from the group of acids that in an acid form are soluble in water in an amount not greater than about 8%, preferably not greater than about 0.7% by weight at 25.degree. C. and in a salt form are soluble in water at least in an amount of about 15% by weight at 25.degree. C. The whitening agent particles include a whitening agent and a surfactant.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: June 27, 2000
    Assignee: Amway Corporation
    Inventors: Steven J. Brouwer, Michael J. Wint
  • Patent number: 6046149
    Abstract: There is provided a detergent composition containing an amylase enzyme and a builder system comprising an aluminosilicate zeolite, a crystalline layered silicate and most preferably an organic polymeric compound wherein the weight ratio of said crytalline layered silicate to said amylase enzyme (120 KNU/gram activity basis) is from 7:1 to 20:1. In one preferred aspect the detergent composition contains a bleaching system capable of providing delayed release of an organic peroxyacid to a wash solution.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: April 4, 2000
    Assignee: Procter & Gamble Company
    Inventors: Graham Alexander Sorrie, Alison Lesley Main
  • Patent number: 6017866
    Abstract: The present invention provides mutant lipases which retain lipase activity, but have improved surfactant resistance and are thus highly advantageous for use in detergent compositions. Preferred lipases of this type include modified functional forms of a lipase of Pseudomonas alcaligenes having one or more amino acid substitutions at or near the surface of the lipase which effect interaction of the hydrophobic portions of surfactant molecules with initiation sites on the enzyme for surfactant denaturation.
    Type: Grant
    Filed: October 22, 1996
    Date of Patent: January 25, 2000
    Assignee: Genencor International, Inc.
    Inventors: Wolfgang Aehle, Gijsbert Gerritse, Hermanus B. M. Lenting
  • Patent number: 5998351
    Abstract: A powdered laundry detergent is provided with discrete whitening agent particles that do not adversely affect the bulk appearance of the detergent during storage. The detergent includes from about 5% to about 80% of an inorganic carrier, from about 1% to about 90% of a detergent surfactant, and from 0.1% up to about 30% of the discrete whitening agent particles. The whitening agent particles include a whitening agent and a surfactant. The surfactant for the whitening agent particle includes those anionics, nonionics, zwitterionics, ampholytics, cationics, and mixtures thereof that are solids in a temperature range of from about 32.degree. F. (0.degree. C.) to about 180.degree. F. (82.degree. C.). The whitening agent particles, in a more desirably form, include a whitener and water. The particles are formed by extruding a homogenous mass into discrete particles. The homogenous mass includes either a whitening agent, a surfactant, and optionally a plasticizer or a whitening agent and water.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: December 7, 1999
    Assignee: Amway Corporation
    Inventors: Steven J. Brouwer, Michael J. Wint
  • Patent number: 5965516
    Abstract: The present invention concerns aqueous surfactant composition comprising poly hydroxy fatty acid amides of formula (A), ##STR1## wherein R.sup.2 is C.sub.11 -C.sub.19 alkyl, alkenyl or mixtures thereof, Z is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain with at least 3 hydroxyls directly connected to the chain; and in a part of the total amide surfactant (a) R.sup.1 is a methyl group and in the remainder of the total amide surfactant (b) R.sup.1 is an alkyl group with from 3 to 8 carbon atoms; said composition further comprising (c) from 0% to 15% by weight of an organic solvent; wherein the ratio of N-methyl poly hydroxy fatty acid amide (a) to N-alkyl (C.sub.3 -C.sub.8) polyhydroxy fatty acid amide (b), is from 25:1 to 1:1.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: October 12, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Jean-Pol Boutique, Patrick Firmin A. Delplancke
  • Patent number: 5942483
    Abstract: A high molecular weight, solid state active detergent made by mixing two pilled materials at a predetermined ratio, the detergent containing sodium lauryl sulfate, fatty alcohol polyoxyetbylene (9) ?ether (AEO-9)!, CMC (carboxymethyl cellulose), EDTA (ethylene diamine tetra-acetic acid), fluorescent whitening agent, sodium silicate pentahydrate (Na.sub.2 Sio.sub.3 5H.sub.2 O), sodium carbonate (Na.sub.2 CO.sub.3), E-44 (epoxy resin), polyamide resin, red iron oxide, zeolite A, and fragrance.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: August 24, 1999
    Inventor: Shiow Jiuan Freida Leu
  • Patent number: 5750748
    Abstract: A process for the preparation of a surfactant composition comprising N-methyl polyhydroxy fatty acid amide and N-alkyl (C3-C8) polyhydroxy fatty acid amide comprises mixing N-methyl polyhydroxy fatty acid amine and N-alkyl (C3-C8) polyhydroxy fatty acid amine to form a mixture. The mixture is reacted with a fatty acid ester reactant in the presence of a base catalyst and, optionally, in the presence of a reaction solvent. Unreacted N-alkoxyamino polyol is acylated with an acid anhydride at a temperature in the range of from 50.degree. C. to 85.degree. C. The weight ratio of N-methyl polyhydroxy fatty acid amide to N-alkyl (C3-C8) polyhydroxy fatty acid amide in the surfactant composition is from 25:1 to 1:1.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: May 12, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Jean-Pol Boutique, Patrick Firmin A. Delplancke
  • Patent number: 5714450
    Abstract: A powdered laundry detergent is provided with discrete whitening agent particles that do not adversely affect the bulk appearance of the detergent during storage. The detergent includes from about 5% to about 80% of an inorganic carrier, from about 1% to about 90% of a detergent surfactant, and up to about 30% of the discrete whitening agent particles. The whitening agent particles include a whitening agent and a surfactant. The surfactant for the whitening agent particle includes those anionics, nonionics, zwitterionics, ampholytics, cationics, and mixtures thereof that are solids in a temperature range of from about 32.degree. F. (0.degree.C.) to about 180.degree. F. (82.degree. C.).
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: February 3, 1998
    Assignee: Amway Corporation
    Inventor: Steven J. Brouwer
  • Patent number: 5714456
    Abstract: A process for preparing discrete whitening agent particles that includes the steps of providing a whitening agent, admixing a surfactant that is a solid in a temperature range of from about 32.degree. F. (0.degree. C.) to about 180.degree. F. (82.degree. C.) with the whitening agent to form a substantially homogenous mass, and forming the mixture into discrete particles. The particles are preferably formed by extruding the homogeneous mass through an extruder at an elevated temperature. The particles may be added to a powder detergent.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: February 3, 1998
    Assignee: Amway Corporation
    Inventor: Michael J. Wint
  • Patent number: 5714451
    Abstract: A powdered laundry detergent is provided with (a) a powder laundry detergent base that includes an inorganic carrier and a surfactant and (b) post-added acidulant and discrete whitening agent particles to provide a detergent having improved cool water solubility with bulk color deterioration caused by whitening agents being minimized. The detergent includes from about 5% to about 80% of an inorganic carrier, from about 1% to about 90% of a detergent surfactant, up to about 15% of an acidulant and up to about 30% of the discrete whitening agent particles. The acidulant is selected from the group of acids that in an acid form are soluble in water in an amount not greater than about 0.7% by weight at 25.degree. C. and in a salt form are soluble in water at least in an amount of about 15% by weight at 25.degree. C. The whitening agent particles include a whitening agent and a surfactant.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: February 3, 1998
    Assignee: Amway Corporation
    Inventors: Steven J. Brouwer, Michael J. Wint
  • Patent number: 5559090
    Abstract: Aqueous acidic bleaching compositions are described which comprise hydrogen peroxide and a specific class of surfactants which stabilize hydrogen peroxide.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: September 24, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Stefano Scialla, Sergio Cardola
  • Patent number: H1604
    Abstract: A process for preparing high density detergent agglomerates having a density of at least 650 g/l is provided. The process comprises the step of continuously mixing detergent granules having a density of less than about 450 g/l in a moderate speed mixer/densifier wherein the granules are pulverized and densified to produce agglomerates having a density of at least 650 g/l . The mean residence time of the granules in the moderate speed mixer/densifier is at least about 12 minutes, and preferably from 12 to 15 minutes. The process further includes the step of either spraying a binder or adding a coating agent in the mixer/densifier to facilitate agglomeration of the granules. Thereafter, the agglomerates are dried to obtain the high density granular detergent agglomerates which are ready for packaging as a low dosage detergent.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: November 5, 1996
    Inventors: Robert G. Welch, William T. Campbell