Percarboxylic Acids Or Salts Thereof (i.e., Compounds Having The -c(=o)-o Oh Group, Wherein The Hydrogen May Be Replaced By A Group Ia Or Iia Light Metal, Or By Substituted Or Unsubstituted Ammonium) Patents (Class 562/2)
  • Patent number: 9587205
    Abstract: A peracid bleaching species is formed in situ in aqueous wash liquor by reaction of a peroxygen bleach precursor, such as perborate or percarbonate, and a bleach activator. The bleach activator is an acetylated ethylene diamine, that comprises at least 25% triacetyl ethylene diamine. The peracid is formed more rapidly even at low temperatures (F2) compared to use of conventional pure tetracetyl ethylene diamine (F1) and better disinfectant properties result.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: March 7, 2017
    Assignee: Warwick International Group Limited
    Inventors: Matthew Brian Skett, Gary Miller
  • Patent number: 9167814
    Abstract: The present invention relates to compositions including surfactant peroxycarboxylic acid, methods for making these compositions, and methods for reducing the population of a microorganism.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: October 27, 2015
    Assignee: ECOLAB USA, INC.
    Inventors: Steven J. Lange, Junzhong Li
  • Patent number: 9018412
    Abstract: The present invention provides ?-keto alkylperacids and methods for producing and using the same. In particular, ?-keto alkylperacids are useful as antimicrobial agents.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: April 28, 2015
    Assignee: CHD Bioscience, Inc.
    Inventors: Edwin D. Neas, John D. Skinner
  • Patent number: 9012681
    Abstract: The present invention provides ?-keto peracids and methods for producing and using the same. In particular, ?-keto peracids are useful as antimicrobial agents.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: April 21, 2015
    Assignee: CHD Bioscience, Inc.
    Inventors: Edwin D. Neas, John D. Skinner
  • Patent number: 8877254
    Abstract: The present disclosure is related to percarboxylic acid compositions formed in situ in non-equilibrium reactions. The peroxycarboxylic acid compositions are formed using ester based starting materials. Methods for using the percarboxylic acid compositions are also disclosed.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: November 4, 2014
    Assignee: Ecolab USA Inc.
    Inventors: Junzhong Li, David D. McSherry, Richard Staub
  • Publication number: 20140308366
    Abstract: The present invention relates to novel sulfoperoxycarboxylic acid compounds, and methods for making and using them. The sulfoperoxycarboxylic compounds of the invention are storage stable, water soluble and have low to no odor. Further, the compounds of the present invention can be formed from non-petroleum based renewable materials. The compounds of the present invention can be used as antimicrobials, and bleaching agents. The compounds of the present invention are also suitable for use as coupling agents.
    Type: Application
    Filed: June 27, 2014
    Publication date: October 16, 2014
    Inventors: Junzhong Li, Richard Staub, David D. McSherry, Keith G. Lascotte, Steven J. Lange, Frank Everts
  • Patent number: 8846107
    Abstract: The present disclosure is related to percarboxylic acid compositions formed in situ in non-equilibrium reactions. The peroxycarboxylic acid compositions are formed using ester based starting materials. Methods for using the percarboxylic acid compositions are also disclosed.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: September 30, 2014
    Assignee: Ecolab USA Inc.
    Inventors: Junzhong Li, David D. McSherry, Richard Staub
  • Patent number: 8822719
    Abstract: Peracid stable fluorescent active compounds in highly acidic, equilibrium peroxycarboxylic acid sanitizing compositions are disclosed as having improved fluorescent stability allowing for monitoring of peroxycarboxylic acid concentration by conductivity and/or optical sensors. Beneficially, the compositions are also low odor and low/no VOC dual functioning acid wash and sanitizing compositions.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: September 2, 2014
    Assignee: Ecolab USA Inc.
    Inventors: Junzhong Li, David D. McSherry, Allison Brewster, Richard Staub
  • Patent number: 8729296
    Abstract: The present disclosure provides methods for generating percarboxylic acid compositions and/or peroxycarboxylic acid compositions formed external to a point of use in non-equilibrium reactions for use in certain bleaching and antimicrobial applications, in particular laundry applications. The compositions are generated external to a point of use, at alkaline pH levels, viz. greater than about pH 12, and optionally suitable for use with detergents and/or surfactants for synergistic bleaching efficacy. Methods of bleaching and/or disinfecting are further provided.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: May 20, 2014
    Assignee: Ecolab USA Inc.
    Inventors: Jonathan P. Fast, Robert D. P. Hei, Richard Staub, Thomas J. D├╝rrschmidt, Peter J. Forth, Junzhong Li, David D. McSherry, Thomas Merz, Johannes G. Winter
  • Publication number: 20140072653
    Abstract: Systems and methods for generating reactive oxygen species formulations useful in various oxidation applications. Exemplary formulations include singlet oxygen or superoxide and can also contain hydroxyl radicals or hydroperoxy radicals, among others. Formulations can contain other reactive species, including other radicals. Exemplary formulations containing peracids are activated to generate singlet oxygen. Exemplary formulations include those containing a mixture of superoxide and hydrogen peroxide. Exemplary formulations include those in which one or more components of the formulation are generated electrochemically. Formulations of the invention containing reactive oxygen species can be further activated to generate reactive oxygen species using activation chosen from a Fenton or Fenton-like catalyst, ultrasound, ultraviolet radiation or thermal activation.
    Type: Application
    Filed: September 7, 2013
    Publication date: March 13, 2014
    Applicant: CLEAN CHEMISTRY, LLC
    Inventor: Wayne BUSCHMANN
  • Publication number: 20140039050
    Abstract: The present invention relates to an improved process for fermenting a sugar-containing material and an improved method for preventing bacterial infection in a fermentation process by using performic acid. The fermentation process is primarily the fermentation of sugar-containing material, for instance sugarcane, into ethanol. The present invention further relates to the manufacture of ethanol and the ethanol so obtained.
    Type: Application
    Filed: February 24, 2011
    Publication date: February 6, 2014
    Inventors: Marcelo Moreira da Costa, Vanderlei Senra
  • Patent number: 8637697
    Abstract: Method and system for forming an anhydrous sterilant. In one embodiment, anhydrous peracetic acid is combined with carbon dioxide, wherein the carbon dioxide is in one of a liquid, solid, and supercritical state.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: January 28, 2014
    Assignee: American Air Liquide, Inc.
    Inventor: Steven A. Fisher
  • Publication number: 20130274334
    Abstract: The present invention relates to novel sulfoperoxycarboxylic acid compounds, and methods for making and using them. The sulfoperoxycarboxylic compounds of the invention are storage stable, water soluble and have low to no odor. Further, the compounds of the present invention can be formed from non-petroleum based renewable materials. The compounds of the present invention can be used as antimicrobials, and bleaching agents. The compounds of the present invention are also suitable for use as coupling agents.
    Type: Application
    Filed: June 7, 2013
    Publication date: October 17, 2013
    Inventors: Junzhong Li, Richard Staub, David D. McSherry, Keith G. Lascotte, Steven J. Lange, Frank Everts
  • Publication number: 20130251820
    Abstract: The present invention provides ?-keto alkylperacids and methods for producing and using the same. In particular, ?-keto alkylperacids are useful as antimicrobial agents.
    Type: Application
    Filed: May 20, 2013
    Publication date: September 26, 2013
    Applicant: CHD Bioscience, Inc.
    Inventors: Edwin D. Neas, John D. Skinner
  • Publication number: 20130224307
    Abstract: The present invention provides ?-keto peracids and methods for producing and using the same. In particular, ?-keto peracids are useful as antimicrobial agents.
    Type: Application
    Filed: April 11, 2013
    Publication date: August 29, 2013
    Applicant: CHD Bioscience, Inc.
    Inventor: CHD Bioscience, Inc.
  • Patent number: 8445717
    Abstract: The present invention provides ?-keto alkylperacids and methods for producing and using the same. In particular, ?-keto alkylperacids are useful as antimicrobial agents.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: May 21, 2013
    Assignee: CHD Bioscience, Inc.
    Inventors: Edwin D. Neas, John D. Skinner
  • Patent number: 8426634
    Abstract: The present invention provides ?-keto peracids and methods for producing and using the same. In particular, ?-keto peracids are useful as antimicrobial agents.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: April 23, 2013
    Assignee: CHD Bioscience, Inc.
    Inventors: Edwin D. Neas, John D. Skinner
  • Patent number: 8318972
    Abstract: Provided are various methods, systems and reactors for producing peroxycarboxylic acid compositions, such as non-equilibrium compositions of peracetic acid, for example. The methods and systems relate to electrolytic generation of hydrogen peroxide or peroxide ions in a reactor, wherein the generated materials are reacted with an acetyl donor to form peracetic acid. In an embodiment, a source of alkali metal ions is provided to an anode chamber such that the ratio of concentrations of the alkali metal ions to protons in the anode chamber of a reactor is greater than 1.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: November 27, 2012
    Assignee: Eltron Research & Development Inc.
    Inventors: Wayne E. Buschmann, Andrew S. Del Negro
  • Patent number: 8277733
    Abstract: The present invention relates to apparatus and methods for making a peroxycarboxylic acid. The apparatus includes a reaction catalyst and a guard column for pretreating one or more reagents, which can increase the life, activity, and/or safety of the reaction catalyst. The peroxycarboxylic acid compositions made by the method and apparatus can include one or more peroxycarboxylic acids.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: October 2, 2012
    Assignee: Ecolab USA Inc.
    Inventors: David D. McSherry, Richard K. Staub, Dan N. Tallman, Junzhong Li, Keith D. Lokkesmoe
  • Publication number: 20120172441
    Abstract: The present disclosure is related to percarboxylic acid compositions formed in situ in non-equilibrium reactions. The peroxycarboxylic acid compositions are formed using ester based starting materials. Methods for using the percarboxylic acid compositions are also disclosed.
    Type: Application
    Filed: December 20, 2011
    Publication date: July 5, 2012
    Applicant: ECOLAB USA INC.
    Inventors: Junzhong Li, David D. McSherry, Richard Staub
  • Publication number: 20120172440
    Abstract: The present disclosure is related to percarboxylic acid compositions formed in situ in non-equilibrium reactions. The peroxycarboxylic acid compositions are formed using ester based starting materials. Methods for using the percarboxylic acid compositions are also disclosed.
    Type: Application
    Filed: December 20, 2011
    Publication date: July 5, 2012
    Applicant: ECOLAB USA INC.
    Inventors: Junzhong Li, David D. McSherry, Richard Staub
  • Patent number: 8075857
    Abstract: The present invention relates to apparatus and methods for making a peroxycarboxylic acid. The apparatus includes a reaction catalyst and a guard column for pretreating one or more reagents, which can increase the life, activity, and/or safety of the reaction catalyst. The peroxycarboxylic acid compositions made by the method and apparatus can include one or more peroxycarboxylic acids.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: December 13, 2011
    Assignee: Ecolab USA Inc.
    Inventors: David D. McSherry, Richard K. Staub, Dan Tallman, Junzhong Li, Keith D. Lokkesmoe
  • Patent number: 8017082
    Abstract: The present invention relates to apparatus and methods for making a peroxycarboxylic acid. The apparatus includes a reaction catalyst and a guard column for pretreating one or more reagents, which can increase the life, activity, and/or safety of the reaction catalyst. The peroxycarboxylic acid compositions made by the method and apparatus can include one or more peroxycarboxylic acids.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: September 13, 2011
    Assignee: Ecolab USA Inc.
    Inventors: David D. McSherry, Richard K. Staub, Dan N. Tallman, Junzhong Li, Keith D. Lokkesmoe
  • Publication number: 20100294987
    Abstract: The invention relates to a dry composition that can be added to a liquid (preferably water and/or brackish water) and used to decontaminate a toxin present in a polar or non-polar matrix.
    Type: Application
    Filed: December 3, 2009
    Publication date: November 25, 2010
    Inventor: Jessie Kater
  • Patent number: 7816555
    Abstract: The present invention relates to compositions of peroxycarboxylic acid that have reduced odor compared to conventional peroxycarboxylic acid compositions, methods employing these reduced-odor compositions, and methods of making these compositions. Typically, the reduced-odor compositions include an amine oxide surfactant.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: October 19, 2010
    Assignee: Ecolab Inc.
    Inventors: Kim R. Smith, Robert D. Hei
  • Publication number: 20100261792
    Abstract: The present invention provides ?-keto alkylperacids and methods for producing and using the same. In particular, ?-keto alkylperacids are useful as antimicrobial agents.
    Type: Application
    Filed: April 15, 2010
    Publication date: October 14, 2010
    Applicant: CHATA BIOSYSTEMS, INC.
    Inventors: Edwin D. Neas, John D. Skinner
  • Patent number: 7714049
    Abstract: A compounding agent for rubber vulcanization comprising an amine salt compound of a carboxylic acid group-containing disulfide having the formula (I): wherein R1, R2 and R3 are independently hydrogen or a C1-C20 organic group which may have a heteroatom and/or a substituent group, and X is a C2-C20 organic group which may have a heteroatom and/or a substituent group, a method for producing the same and a rubber composition containing the same, capable of improving the vulcanization rate and vulcanized rubber physical properties, without having a detrimental effect on the scorch time.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: May 11, 2010
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Wonmun Choi, Yuuki Shimizu
  • Patent number: 7666354
    Abstract: A peroxycarboxylic acid represented by the general formula (I): (wherein R1 represents a substituted or unsubstituted C1-C10 alkyl group, or a substituted or unsubstituted C6-C10 aryl group, L represents a substituted or unsubstituted C2-C12 divalent linking group, or R1 and L may combine to form a ring) and a composition comprising said peroxycarboxylic acid are provided. Said peroxycarboxylic acid can sterilize a medical apparatus such as endoscope in a short period of time and has no unpleasant smell.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: February 23, 2010
    Assignee: FUJIFILM Corporation
    Inventors: Masayuki Kawakami, Kazuya Takeuchi
  • Publication number: 20100021557
    Abstract: The present invention relates to novel sulfoperoxycarboxylic acid compounds, and methods for making and using them. The sulfoperoxycarboxylic compounds of the invention are storage stable, water soluble and have low to no odor. Further, the compounds of the present invention can be formed from non-petroleum based renewable materials. The compounds of the present invention can be used as antimicrobials, and bleaching agents. The compounds of the present invention are also suitable for use as coupling agents.
    Type: Application
    Filed: March 27, 2009
    Publication date: January 28, 2010
    Applicant: ECOLAB INC.
    Inventors: Junzhong Li, Richard K. Staub, David D. McSherry, Keith G. Lascotte, Steven J. Lange, Frank Everts
  • Patent number: 7622606
    Abstract: The present invention relates to compositions of peroxycarboxylic acid that have reduced odor compared to conventional peroxycarboxylic acid compositions, methods employing these reduced-odor compositions, and methods of making these compositions. Typically, the reduced-odor compositions include an amine oxide surfactant.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: November 24, 2009
    Assignee: Ecolab Inc.
    Inventors: Kim R. Smith, Robert D. P. Hei
  • Patent number: 7547421
    Abstract: The present invention relates to apparatus and methods for making a peroxycarboxylic acid. The apparatus includes a reaction catalyst and a guard column for pretreating one or more reagents, which can increase the life, activity, and/or safety of the reaction catalyst. The peroxycarboxylic acid compositions made by the method and apparatus can include one or more peroxycarboxylic acids.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: June 16, 2009
    Assignee: Ecolab Inc.
    Inventors: David D. McSherry, Richard K. Staub, Dan Tallman, Junzhong Li, Keith D. Lokkesmoe
  • Publication number: 20090005590
    Abstract: A process is provided for producing peroxycarboxylic acids from carboxylic acid esters. More specifically, carboxylic acid esters are reacted with an inorganic peroxide, such as hydrogen peroxide, in the presence of an enzyme catalyst having perhydrolysis activity. The present perhydrolase catalysts are classified as members of the carbohydrate esterase family 7 (CE-7) based on the conserved structural features. Further, disinfectant formulations comprising the peracids produced by the processes described herein are provided.
    Type: Application
    Filed: June 20, 2008
    Publication date: January 1, 2009
    Inventors: Robert DiCosimo, John E. Gavagan, Mark S. Payne, Frederick B. Cooling, III
  • Publication number: 20080009641
    Abstract: A checker which comprises potassium iodide, thiosulfate ion, and starch, wherein a weight ratio of the potassium iodide and the thiosulfate ion (potassium iodide/thiosulfate ion) is 0.70 to 0.3; and a kit comprising two or more of the aforementioned checkers, wherein the aforementioned weight ratio is different between said checkers are provided. The checker or the kit easily and precisely determines whether or not the concentration of an organic carboxylic acid peroxide such as peracetic acid in an aqueous composition for sterilization comprising the organic carboxylic acid peroxide as an active ingredient is an effective concentration.
    Type: Application
    Filed: June 28, 2007
    Publication date: January 10, 2008
    Applicant: FUJIFILM Corporation
    Inventor: Hideo MIYAZAKI
  • Patent number: 6727382
    Abstract: Cationic peroxyacids of formula (IV) wherein: R1 is a, optionally substituted, C1-C7 alkyl or alkenyl or alkaryl with a C1-C7 alkyl group; R2 and R3 are each independently a C1-C3 alkyl or C1-C3 substituted alkyl group; n is an integer from 0 to 3; and X− is a surfactant anion selected from alkyl carboxylates; alkyl ether sulphates; alkylbenzene sulphonates; C12-15 primary and C14-18 secondary alkyl sulphates; olefin sulphonates; alkane sulphonates; dialkyl sulphosuccinates; fatty acid ester sulphonates; alkylether sulphonates, alkylether carboxylates, sulphonated alkyl polyglycosides; sulphonated alkanoyl glucose ethers, sulphonated monoglycerol ethers; secondary alkane sulphonates; esterified isethionates; alkyl and dialkyl phosphates; sodium fatty acid sulphonates; and fatty acid soaps. They can be used in bleaching and detergent compositions and in bleach additive products.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: April 27, 2004
    Assignee: Unilever Patent Holdings, B.V.
    Inventors: John Oakes, David W Thornthwaite
  • Publication number: 20040002606
    Abstract: A one-pot process for the preparation of alkoxyamines conforming to formulae (I) or (II), preferably (I) 1
    Type: Application
    Filed: June 19, 2003
    Publication date: January 1, 2004
    Inventors: Christophe Detrembleur, Thomas Grob, Rolf-Volker Meyer
  • Publication number: 20040002616
    Abstract: A system for a fast-rate preparation just before use of organic peroxyacids, in a hydroalcoholic environment, by mixing at temperatures lower than 40° C., preferably lower than 25° C., a first reactant and a second reactant, kept separate from each other during storage, to obtain an activated solution, the first reactant is in the solid or liquid state at a temperature from 5 to 45° C. and includes at least one acyl donating group, and the second reactant is in the solid state, at least in the temperature range from 5° C. and 40° C., and comprises a peroxide anion source in a concentration such as to provide at least 10-fold molar excess of peroxide with respect to the stoichiometric amount of the acyl-donor, a biocidal agent including at least one C1-C18 linear or branched aliphatic and/or aromatic alcohol, and a stabilising buffer component suitable for keeping the second reactant at a desired pH value.
    Type: Application
    Filed: May 30, 2003
    Publication date: January 1, 2004
    Inventors: Andrea Preto, Paolo Tabasso
  • Publication number: 20030133956
    Abstract: The invention relates to the use of ester peroxy acids for improving surface perfusion during the disinfection of surfaces and to synergistic antimicrobial combinations of ester peroxy acids and additional constituents.
    Type: Application
    Filed: June 24, 2002
    Publication date: July 17, 2003
    Inventors: Siegfried Bragulla, Alfred Laufenberg, Harald Kluschanzoff
  • Publication number: 20020161258
    Abstract: Mid-chain branched peracids and peracid precursors useful in laundry and cleaning compositions, especially granular and liquid detergent compositions are disclosed. These peracids and precursors are suitable for formulation with a wide range of detergent adjuncts for the purpose of providing improved cleaning systems, especially for use in detergent compositions which will be used in laundry processes involving low water temperature wash conditions. The present invention also relates to novel mid-chain branched peracids and precursors for use in the compositions of the present invention.
    Type: Application
    Filed: June 6, 2000
    Publication date: October 31, 2002
    Inventors: GREGORY SCOT MIRACLE, MICHAEL EUGENE BURNS
  • Publication number: 20020128411
    Abstract: Perfluorodiacylperoxides having the following structures: 1
    Type: Application
    Filed: March 4, 2002
    Publication date: September 12, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Walter Navarrini, Marco Galimberti
  • Patent number: 6423868
    Abstract: Process for the production of an aqueous monoester peroxycarboxylic acid solution by reaction of a peroxygen compound with at least one dicarboxylic acid and with at least one alcohol optionally in the presence of an acid catalyst. Aqueous monoester peroxycarboxylic acid solution obtainable by this process. Use of the aqueous monoester peroxycarboxylic acid solution as disinfectant.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: July 23, 2002
    Assignee: Solvay (Societe Anonyme)
    Inventors: Graham Carr, Alun P. James
  • Patent number: 6307094
    Abstract: The present invention provides a solventless process for the catalytic hydrogenation of esters of 4,4,4-trihaloacetoacetic acid using a platinum catalyst in the presence of an acid or base co-catalyst to provide the analagous 3-hydroxybutyrate ester. Such 3-hydroxybutyrate esters are useful as solvents, cleaners or fine chemical intermediates.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: October 23, 2001
    Inventors: Joshua Anthony Chong, Fereydon Abdesaken, Lori Ann Spangler, Renee Caroline Roemmele, Randall Wayne Stephens, Peter David Nightingale, David John Hartley
  • Patent number: 6207108
    Abstract: Storage stable, aqueous acidic solutions having a pH in the range of from 1 to 5 comprising at least one ester peracid having general formula where R represents an alkyl group having from 1 to 4 carbons and x equals 1 to 4, are provided. The solutions can be prepared by contacting an aqueous solution of a carboxylic compound having general formula where x is from 1 to 4 and R represents an alkyl group having from 1 to 4 carbons with an inorganic peroxygen compound, preferably hydrogen peroxide, at a pH of less than 4 until at least some ester peracid is produced, and thereafter adjusting the pH to be in the range of from 1 to 5, if necessary.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: March 27, 2001
    Assignee: Solvay Interox Limites
    Inventors: Graham Carr, Alun Pryce James
  • Patent number: 5985815
    Abstract: New compounds useful as bleach activators as well as new percarboxylic acids, which may be formed as intermediates upon reaction of such activators with peroxygen bleach source in aqueous solution, include nitrogen-containing heterocyclic groups. Preferred activators are symmetrical derivatives of dibasic carboxylic acids, having N,N'diacyl N-heterocyclic groups usually lactams. They are produced by reaction of 2 moles of the lactam with one mole of dibasic acid chloride or anhydride.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: November 16, 1999
    Assignee: Warwick International Group Limited
    Inventors: John Townend, Jan Darrel Crowther
  • Patent number: 5914303
    Abstract: An aromatic peroxyacid which satisfies the general formula (1):X--Ar--CO--NY--R(Z)--CO--OOH (1)in which X represents hydrogen or a compatible substituent, R represents --(CH2).sub.n -- in which n=2 or 3, and Y and Z each represent independently a substituent selected from hydrogen or an alkyl or aryl group or an aryl group substituted by a compatible substituent or alkaryl group provided that at least one of Y and Z is not hydrogen if n=3. The peroxyacid is an effective bleaching and disinfecting agent which has a long shelf life and good resistance to impact, pressure and thermal shocks, and is useful in bleaching, washing and disinfecting compositions.
    Type: Grant
    Filed: May 30, 1996
    Date of Patent: June 22, 1999
    Assignee: Solvay Interox Limited
    Inventors: John Phillip Sankey, Alun Pryce James
  • Patent number: 5908820
    Abstract: There is provided a cationic organic peroxyacid having the general formula ##STR1## wherein: R.sub.1 is an optionally substituted, linear or branched, C.sub.8 -C.sub.12 alkyl or alkenyl group; R.sub.2 and R.sub.3 are each a methyl group; R.sub.4 is an optionally substituted, linear or branched C.sub.3 -C.sub.5 alkyl or alkenyl group; p is 0 or 1; z is an integer selected from 0-3; y is an integer selected from 0-5; w is 0 or 1; and X.sup.- is a counter anion. This peroxyacid was found to have good bleaching performance without showing incompatibility with anionic surfactants.
    Type: Grant
    Filed: October 24, 1996
    Date of Patent: June 1, 1999
    Assignee: Lever Brothers Company
    Inventors: John Oakes, David William Thornthwaite
  • Patent number: 5886216
    Abstract: The invention relates to a method for producing peracetic acid by reacting hydrogen peroxide and acetic acid in a water-based reaction medium in a reactor and continuously distilling off the produced peracetic acid. Thermal energy in an in an amount exceeding about 0.2 kW/kg reaction medium.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: March 23, 1999
    Assignee: EKA Chemicals AB
    Inventor: Roland Pudas
  • Patent number: 5879584
    Abstract: A process for manufacturing an aqueous composition of a peracid by reacting an acid anhydride with concentrated hydrogen peroxide. Preferably the aqueous peracid composition is further converted into an emulsion having improved stability wherein said emulsion contains a surfactant having an HLB above 11 and a surfactant having an HLB below 11.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: March 9, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Giulia Ottavia Bianchetti, Stefano Scialla, Sandro Campestrini, Fulvio Di Furia
  • Patent number: 5840667
    Abstract: A bleach composition comprises a peroxygen bleach source (for instance hydrogen peroxide, a perborate or a percarbonate salt) and an activator of the formula I: ##STR1## in which X is O or S; one of E and G is --A-- and the other is --N(R.sup.2)--;A is --O-- or --S--;R.sup.1 is a C.sub.1-50 alkylene group (including cyclo alkylene), optionally interrupted by an arylene group and/or by one or more ether, ester, anhydride, thioether, secondary or tertiary amine, amide or imide linkage, an arylene group or an alkarylene group;R.sup.2, is selected from H, alkyl, aralkyl, alkaryl and aryl;R.sup.3 is alkyl, aralkyl, alkaryl or aryl, or, when E is --N(R.sup.2)--, H;in which R.sup.2 and R.sup.3 can be joined so as to form a heterocyclic ring with the atoms to which they are attached, and/or in which R.sup.1 can be joined with R.sup.2 or R.sup.3 ; andL is a leaving group which may optionally be joined to any of R.sup.1, R.sup.2 and R.sup.3.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: November 24, 1998
    Assignee: Warwick International Group, Ltd.
    Inventors: Neal James Milne, Jonathan Mercer Watkins
  • Patent number: 5665891
    Abstract: A process for the catalysed oxidation of ketones to esters or lactones with hydrogen peroxide in the presence of a carboxylic acid or anhydride is provided. The process employs gamma alumina as a heterogeneous catalyst. In certain preferred embodiments the catalyst also contains a tungsten-containing heteropolyacid. Preferably, the heteropolyacid contains phosphorus. In a related process, the catalyst accelerates the formation of percarboxylic acid solutions.
    Type: Grant
    Filed: October 12, 1995
    Date of Patent: September 9, 1997
    Assignee: Solvay Interox Limited
    Inventors: Scott William Brown, Alexander Johnstone, William Ronald Sanderson
  • Patent number: 5648521
    Abstract: Process for the preparation of amidoperoxycarboxylic acids, comprising the process steps: ring opening of the N-acyllactam to give the corresponding amidocarboxylic acid and, subsequently, oxidation of the resulting amidocarboxylic acid to the corresponding amidoperoxycarboxylic acid.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: July 15, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Matthias Loffler