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: 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
  • Patent number: 5621133
    Abstract: Novel compounds having the formula ##STR1## and the pharmaceutically acceptable salts, esters and amides thereof, whereinA is --O--, --S-- or --CR.sup.2 R.sup.8 --;R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, R.sup.10, X and Y are specifically defined; andup to one combination of (a) R.sup.2 and R.sup.5, (b) R.sup.5 and R.sup.6, (c) R.sup.5 and R.sup.7, (d) R.sup.6 and R.sup.7, and (e) R.sup.7 and Y, taken together with the atoms to which they are attached, may form a ring, the compounds being useful for treating dopamine-related neurological, psychological and cardiovascular disorders as well as in the treatment of cognitive impairment, attention deficit disorder, and substance abuse and other addictive behavior disorders.Also disclosed are intermediates and processes useful in the preparation of the above compounds.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 15, 1997
    Inventors: Michael P. DeNinno, Richard J. Perner
  • Patent number: 5591884
    Abstract: Novel compounds having the formula ##STR1## and the pharmaceutically acceptable salts, esters and amides thereof, whereinA is --O--, --S-- or --CR.sup.2 R.sup.8 --;R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, R.sup.10, X and Y are specifically defined; andup to one combination of (a) R.sup.2 and R.sup.5, (b) R.sup.5 and R.sup.6, (c) R.sup.5 and R.sup.7, (d) R.sup.6 and R.sup.7, and (e) R.sup.7 and Y, taken together with the atoms to which they are attached, may form a ring, the compounds being useful for treating dopamine-related neurological, psychological and cardiovascular disorders as well as in the treatment of cognitive impairment, attention deficit disorder, and substance abuse and other addictive behavior disorders.Also disclosed are intermediates and processes useful in the preparation of the above compounds.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: January 7, 1997
    Assignee: Abbott Laboratories
    Inventors: Michael P. DeNinno, Richard J. Perner
  • Patent number: 5545748
    Abstract: Polyglycolate compounds are provided having the general structure: ##STR1## wherein n is an integer from 2 to about 10; R is C.sub.1-20 linear or branched alkyl, alkoxylated alkyl, cycloalkyl, aryl, alkylaryl, substituted aryl; R' and R" are independently H, C.sub.1-20 alkyl, aryl, C.sub.1-20 alkylaryl, substituted aryl, and NR.sub.3.sup..alpha.+, wherein R.sup..alpha. is C.sub.1-30 alkyl; and L is a leaving group displaceable in a peroxygen bleaching solution by perhydroxide anion. When this compound is combined with a source of peroxgen in aqueous solution, then a plurality of stain removing peracids are formed. Such peracids are formed substantially sequentially beginning with the carbonyl adjacent to the leaving group L. Thus, a first stain removing peracid having the structure ##STR2## will be formed in amounts approaching quantitative yield.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: August 13, 1996
    Assignee: The Clorox Company
    Inventors: Richard R. Rowland, Ronald A. Fong, Richard J. Wiersema, Alfred G. Zielske
  • Patent number: 5489706
    Abstract: Disclosed is a process for improving the storage stability of peracetic acid comprising adding an effective concentration of preferably 0.1-5 wt. % of an aliphatic alcohol ethoxylate wetting agent which has an EO number of greater than 4.
    Type: Grant
    Filed: May 13, 1994
    Date of Patent: February 6, 1996
    Assignee: Solvay Interox Limited
    Inventor: Christopher Revell
  • Patent number: 5463112
    Abstract: This invention concerns novel sulphoperoxyacids having the following generic formula ##STR1## wherein the R', R", and M are as defined in the specification. Bleach compositions and methods of bleaching using such novel sulphoperoxyacids are also taught.
    Type: Grant
    Filed: February 2, 1993
    Date of Patent: October 31, 1995
    Assignee: Solvay Interox Limited
    Inventors: John P. Sankey, William Sanderson, Graham R. Horne
  • Patent number: 5429769
    Abstract: A bleaching composition and method of using is provided wherein the composition comprises an effective amount for bleaching of an organic peroxyacid whose structure includes a percarboxylic and a carboxylic acid or a salt functional unit; an effective amount of manganese complex having a formula selected from the group consisting of:[LMnX.sub.3 ]Y (1)wherein Mn is manganese;X is a coordinating species selected from the group consisting of:RO.sup.-, Cl.sup.-, Br.sup.-, I.sup.-, F.sup.-, NCS.sup.-, N.sub.3.sup.-, I.sub.3.sup.-, NH.sub.3, NR.sub.3, RCOO.sup.-, RSO.sub.3.sup.-, RSO.sub.4.sup.-, OH.sup.-, O.sub.2.sup.2-, HOO.sup.-, H.sub.2 O, SH.sup.-, CN.sup.-, OCN.sup.-, and S.sub.4.sup.2- and combinations thereof;R is a C.sub.1 -C.sub.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: July 4, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: John R. Nicholson, Richard G. Gary
  • Patent number: 5422028
    Abstract: Cationic peroxyacid are provided having formula (I): ##STR1## wherein: R.sub.1 is an optionally substituted C.sub.1 -C.sub.24 alkyl or alkenyl or alkylaryl with a C.sub.1 -C.sub.24 alkyl group;R.sub.2 and R.sub.3 are each independently a C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.3 substituted alkyl group;R.sub.4 and R.sub.6 are each independently aryl or (CH.sub.2).sub.n where n is an integer from 1 to 7;R.sub.5 is selected from hydrogen, C.sub.1 -C.sub.7 alkyl, or arylsubstituted with a C.sub.1 -C.sub.2 alkyl; andX.sup.- is a counter anion.These cationic peroxyacids show good bleaching activity over a wide range of pH conditions.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: June 6, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: John Oakes, David W. Thornthwaite
  • Patent number: 5409633
    Abstract: The invention relates to bleach compositions containing, as the bleach, a hydrophobic peroxyacid which is sterically bulky, so that the smallest cross-sectional area of the peroxyacid, defined by multiplying together the two smallest dimensions of the molecule, is from 30 to 80 .ANG..sup.2. Preferred are peroxyacids containing a tertiary alkyl group, a norbornane ring or an adamantone ring. Such peroxyacids are effective for the bleaching of stains, especially hydrophobic stains, with low accompanying dye damage.
    Type: Grant
    Filed: September 15, 1993
    Date of Patent: April 25, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Anthony H. Clements, Colin W. Kerr, John R. Nicholson
  • Patent number: 5368867
    Abstract: The production of dilute equilibrium, storage stable solutions of peracetic acid from mixtures of aqueous hydrogen peroxide and acetic acid, or by dilution of more concentrated peracetic acid solutions, takes a long time because of the low concentrations of the active participating materials. The process can be accelerated by employing a two step procedure in which a concentrated peracetic acid solution is diluted with water and partially hydrolysed in the first step, and then the hydrolysis reaction is quenched by addition of hydrogen peroxide in the second step.
    Type: Grant
    Filed: September 22, 1992
    Date of Patent: November 29, 1994
    Assignee: Peroxidos Do Brasil
    Inventors: Alcides B. Da Silva, Joao B. Tognetti, Jal R. Dadabhoy
  • Patent number: 5364959
    Abstract: There are disclosed novel, highly stable sulfone peroxycarboxylic acids useful in detergent compositions or alone as bleaching agents which are represented by the formula ##STR1## wherein A and B are organic moieties bonded to the sulfur atom by a carbon atom and one of A and B contains from 1 to 4 ##STR2## groups bonded to carbon atoms.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: November 15, 1994
    Assignee: Monsanto Company
    Inventors: David R. Dyroff, Daniel P. Getman, Joan K. Glascock
  • Patent number: 5349083
    Abstract: A dilute solution of a lower aliphatic peracid such as peracetic acid, having an equilibrium composition, is produced by contacting hydrogen peroxide with a lower aliphatic acid each at initial high concentrations in an aqueous reaction mixture to rapidly form a reaction mixture containing, for example, up to 30% by weight of peracid and diluting the reaction mixture with water and with any required quantities of lower aliphatic acid and/or hydrogen peroxide to reproduce the equilibrium composition of the dilute solution, the process being characterized in that the reaction mixture rich in lower aliphatic peracid is diluted before it has itself reached equilibrium, for example when it contains from 20 to 80% of its potential equilibrated content of peracid. The process provides a quick plant-efficient process for the production of stable dilute lower aliphatic peracid solutions for industrial disinfection purposes or for personal or domestic hygiene use.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: September 20, 1994
    Assignee: Solvay Interox Limited
    Inventors: Paul Brougham, William R. Sanderson, Timothy Pearce
  • Patent number: 5326904
    Abstract: The compound 6,6'-terephthal-di(amidoperoxyhexanoic) acid is disclosed.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: July 5, 1994
    Assignee: Solvay Interox Limited
    Inventor: John P. Sankey
  • Patent number: 5292451
    Abstract: Compounds of the formula ##STR1## where y is 1 or 2,A is hydrogen, C.sub.1 -C.sub.2 -alkyl, aryl or a group of the formula ##STR2## if y is 1, or C.sub.2 -C.sub.20 -alkylene or arylene if y is 2, R.sup.1 and R.sup.2 can be identical or different and each is hydrogen, C.sub.1 -C.sub.20 -alkyl, aryl, haloaryl, alkoxyaryl or alkylaryl, or else R.sup.1 and R.sup.2 together are a C.sub.2 -C.sub.4 -alkylene radical,x is 0 or 1,B is a group of the formula ##STR3## n is from 1 to 20, m is 0, 1 or 2,R.sup.3 is C.sub.1 -C.sub.20 -alkyl andR.sup.4 is in each case hydrogen or C.sub.1 -C.sub.20 -alkyl.These compounds are suitable for use as bleaching, oxidizing or disinfecting agents.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: March 8, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hanspeter Gethoffer, Gerd Reinhardt, Peter Naumann
  • Patent number: 5286401
    Abstract: Heterocyclic compounds which are useful as bleach activators or optical brighteners in washing and cleaning agents have the formula ##STR1## where the variables have the following meanings: X is O, S or the group N--R.sup.3, where R.sup.3 is hydrogen, C.sub.1 -C.sub.25 -alkyll C.sub.1 -C.sub.25 -acyl or an aryl group of up to12 carbon atoms,Y is CH or N,R.sup.1 for X=S or N--R.sup.3 is hydrogen, a C.sub.1 -C.sub.25 -alkyl or C.sub.2 -C.sub.25 -alkenyl group or a phenyl radical which may be additionally substituted by one or two C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, hydroxyl, carboxyl, sulfo, amino, C.sub.1 -C.sub.4 -acylamino, nitro or cyano groups or chlorine or bromine atoms, which substituents, if there are two of them, may be identical or different,R.sup.1 for X=O is phenyl, o-, m- or p-tolyl, p-chlorophenyl, m-nitrophenyl, m-methoxyphenyl or m-methylsulfonylphenyl,R.sup.2 for X=S or N--R.sup.3 is hydrogen, a C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.
    Type: Grant
    Filed: March 3, 1992
    Date of Patent: February 15, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernhard Dung, Wolfgang Trieselt, Erwin Hahn, Johannes Perner, Alfred Oftring
  • Patent number: 5268003
    Abstract: An amido peroxyacid compound is provided having the formula: ##STR1## wherein R is selected from the group consisting of C.sub.1 -C.sub.12 alkylene, C.sub.5 -C.sub.12 cycloalkylene, C.sub.6 -C.sub.12 arylene and radical combinations thereof;R.sup.1 and R.sup.2 are independently selected from the group consisting of H, C.sub.1 -C.sub.16 alkyl and C.sub.6 -C.sub.12 aryl radicals and a radical that can form a C.sub.3 -C.sub.12 ring together with R.sup.3 and both nitrogens;R.sup.3 is selected from the group consisting of C.sub.1 -C.sub.12 alkylene, C.sub.5 -C.sub.12 cycloalkylene and C.sub.6 -C.sub.12 arylene radicals, and provided when R.sup.3 is arylene and when n' and m' are each zero, R is other than C.sub.5 alkylene;n and n' each are an integer chosen such that the sum thereof is 1;m and m' each are an integer chosen such that the sum thereof is 1; andM is selected from the group consisting of H, alkali metal, alkaline earth metal, ammonium, alkanolammonium cations and radicals and combinations thereof.
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: December 7, 1993
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Janet L. Coope, Robert W. Humphreys, Stephen A. Madison
  • Patent number: 5245075
    Abstract: Amino-derivative (poly)peroxycarboxylic acids which have the formula: ##STR1## wherein the symbols have the following meanings: R, R.sub.1, and R.sub.2, which may be equal to or different from one another, represent hydrogen atoms, alkyl groups or groups selected from R, R.sub.1 and R.sub.2, which taken together with the nitrogen atom to which they are linked, give rise to an aliphatic heterocyclic group, all of them being optionally substituted;A represents a (cyclo) alkylene group, an arylene group which may also be condensed with cycloaliphatic groups, a cycloalkylene-alkylene or an alkylene-cycloalkylene group, an arylene-alkylene or an alkylene-arylene group, which may be condensed with cyclo-aliphatic groups wherein said alkylene group may also be interrupted by --CONR.sub.3 groups, wherein R.sub.3 represents a hydrogen atom or an alkyl or aryl group;X.sup.- represents HSO.sub.4.sup.- or CH.sub.3 SO.sub.3.sup.- ; a process for their preparation; and their use as bleaching agents.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: September 14, 1993
    Assignee: Ausimont S.r.l.
    Inventors: Carlo Venturello, Claudio Cavallotti
  • Patent number: 5235099
    Abstract: A process for the preparation of ureidoperoxycarboxylic acids of the formula ##STR1## in which x is the number 1 or 2,A,if x is 1,is hydrogen, C.sub.1 -C.sub.20 -alkyl, aryl, preferably phenyl, or haloaryl, preferably chlorophenyl, orif x is 2,is C.sub.1 -C.sub.20 -alkylene or arylene, preferably phenylene,B is a group of the formula ##STR2## in which n is a number from 1 to 20,m is the number 0, 1 or 2,R.sup.1 is C.sub.1 -C.sub.20 -alkyl andR.sup.2 is in each case hydrogen or C.sub.1 -C.sub.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: August 10, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Wolf-Dieter Muller, Frank Jaekel, Peter Naumann, Gerd Reinhardt
  • Patent number: 5220052
    Abstract: In one class of processes for making poorly soluble organic peroxyacids the corresponding carboxylic acid is reacted with hydrogen peroxide in a reaction medium containing a high concentration of sulphuric acid. The presence of such constituents in the reaction mixture and the manner of the reactants and the way in which they are brought into contact, can result in the processes being hazardous. In the present invention, hazard problems are reduced or eliminated by first dissolving the carboxylic acid in concentrated sulphuric acid, secondly forming a Caro's acid solution containing a complementary amount of sulphuric acid and hydrogen peroxide within a predetermined range, and then introducing the carboxylic acid solution at a controlled rate in the Caro's acid solution, often over a period of from about 30 to 90 minutes, with agitation and temperature control.
    Type: Grant
    Filed: November 20, 1991
    Date of Patent: June 15, 1993
    Assignee: Interox Chemicals Limited
    Inventors: Nicholas A. Troughton, Graham Carr, Alun P. James, Andrew J. Willson
  • Patent number: 5154912
    Abstract: The peroxides which include the O.sup.17 isotope, especially the hydrogen peroxides and peroxides and hydroperoxides prepared therefrom, are well adapted as nonradioactive labeled compounds for use in the medicinal and biological arts.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: October 13, 1992
    Assignee: Atochem
    Inventors: Jean-Pierre Schirmann, Jean-Jacques Barieux
  • Patent number: 5149864
    Abstract: Compounds of the formula ##STR1## where y is 1 or 2,A is hydrogen, C.sub.1 -C.sub.2 -alkyl, aryl or a group of the formula ##STR2## if y is 1, or C.sub.2 -C.sub.20 -alkylene or arylene if y is 2, R.sup.1 and R.sup.2 can be identical or different and each is hydrogen, C.sub.1 -C.sub.20 -alkyl, aryl, haloaryl, alkoxyaryl or alkylaryl, or else R.sup.1 and R.sup.2 together are a C.sub.2 -C.sub.4 -alkylene radical,x is 0 or 1,B is a group of the formula ##STR3## n is from 1 to 20, m is 0, 1 or 2,R.sup.3 is C.sub.1 -C.sub.20 -alkyl andR.sup.4 is in each case hydrogen or C.sub.1 -C.sub.20 -alkyl.These compounds are suitable for use as bleaching, oxidizing or disinfecting agents.
    Type: Grant
    Filed: May 21, 1991
    Date of Patent: September 22, 1992
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hanspeter Gethoffer, Gerd Reinhardt, Peter Naumann
  • Patent number: 5117049
    Abstract: Amino-derivative (poly)peroxycarboxylic acid monopersulfates having the formula: ##STR1## wherein the symbols have the following meanings: R, R.sub.1 and R.sub.2, which may be alike or different from one another, represent hydrogen atoms, alkyl groups which may be optionally substituted with the proviso that at least one of them is a hydrogen atom;n is an integer different from 0;said --(CH.sub.2).sub.n -- group may be also interrupted by CONR.sub.3 groups;and wherein R.sub.3 represents a hydrogen atom or an alkyl or aryl group. A process for their preparation and their use as bleaching agents are also disclosed.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: May 26, 1992
    Assignee: Ausimont S.r.L.
    Inventors: Carlo Venturello, Claudio Cavallotti, Fiorella Achilli
  • Patent number: 5098598
    Abstract: The incorporation of many percarboxylic acids in household formulations is precluded from by adverse physicochemical properties, such as a propensity to decompose too quickly during storage or explode on impact or when subjected to pressure, though otherwise they would be effective disinfectants and bleaching agents, especially at hand-hot temperatures.The invention provides a stable and effective selection of organic percarboxylic acids which satisfy one or other of the general formulae (1) or (2):R.sup.a --CO--NH--C.sub.6 H.sub.4 --CO--OOH (1)orHOO--CO--R.sup.b --CO--NH--C.sub.6 H.sub.4 X (2)in which in formula (1) the amido substituent is meta or para to the percarboxylic acid group and R.sup.a represents an alkyl group containing from 1 to 5 carbons in formula (1) and in formula (2) R.sup.b represents a branched or preferably linear alkylene group containing from 4 to 7 carbon atoms of which at least 4 are linear and X represents hydrogen or a substituent like chloride.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: March 24, 1992
    Assignee: Interox Chemicals Limited
    Inventors: John P. Sankey, Alun P. James, Inderbir K. Tranter, Joseph M. Schofield
  • Patent number: 5071584
    Abstract: Nitrogen-containing heterocyclic (poly)peroxycarboxylic acids having the formula: ##STR1## wherein: R and R.sub.1 represent, independently of each other, a hydrogen atom or a straight or branched alkyl, (hetero)cycloalkyl, (hetero)aryl, alkylaryl or arylalkyl group,optionally substituted, a carboxylic group, or any other substituent which is non-reactive in the presence of the active oxygen of the peroxycarboxylic group;n is an integer selected from 0, 1 and 2;m is an integer selected from 1, 2 and 3; andX represents an acidic anion selected from HSO.sub.4.sup.- and CH.sub.3 SO.sub.3 --and wherein the heterocyclic ring may be condensed with at least one further (hetero)aromatic or (hetero)cycloalkylic ring.
    Type: Grant
    Filed: October 2, 1990
    Date of Patent: December 10, 1991
    Assignee: Ausimont S.p.A.
    Inventors: Carlo Venturello, Claudio Cavallotti
  • Patent number: 4959187
    Abstract: The invention provides novel bleaching compositions comprising peracid precursors with the general structure ##STR1## with R, R', R" and L as defined in the specification. Novel peracids and precursors are also herein disclosed. These peracid precursors provide new, proficient and cost-effective compounds for fabric bleaching.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: September 25, 1990
    Assignee: The Clorox Company
    Inventors: Ronald A. Fong, Sheldon N. Lewis, Richard J. Wiersema, Alfred G. Zielske
  • Patent number: 4919836
    Abstract: A process for the preparation of agglomerates containing diperoxydodecanedioic acid and a water-impermeable material, e.g. lauric acid, which process comprises the successive steps of agitating an aqueous suspension of the peroxy acid in the presence of the water-impermeable material and above the melting point thereof, cooling the suspension of the agglomerated particles thus obtained to a temperature at which the water-impermeable material turns solid, and isolating the resulting agglomerates. The agglomerates obtained are suitable for use as bleaching agent.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: April 24, 1990
    Assignee: Akzo N.V.
    Inventors: John Meijer, Reinder Torenbeek, Rolf H. van den Berg
  • Patent number: 4876046
    Abstract: Novel peroxyacids of the formula: ##STR1## wherein X is an alkylene group selected from propylene and butylene, R is alkyl containing from 4 to 12 carbon atoms, benzyl or phenyl and m is 1 or 2. The compounds are useful as disinfectants and fabric bleaches.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: October 24, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Allen D. Clauss, Eugene P. Gosselink
  • Patent number: 4874556
    Abstract: A process for desensitization of water insoluble peroxycarboxylic acids with essentially sodium sulfate in the aqueous phase, wherein the desensitized peroxycarboxylic acids is separated from the mother liquor, and the sodium sulfate contained in the mother liquor is isolated by one- or multi-stage crystallization in purified form as the deca (hepta) hydrate and this, directly or after conversion to an aqueous sodium sulfate solution, and/or anhydrous sodium sulfate is returned to the desensitization process. The process is nonpolluting and can be operated safely on the industrial scale. The peroxycarboxylic acids desensitized according to the invention are characterized by lower heavy metal content and high storage stability.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: October 17, 1989
    Assignee: Degussa Aktiengesellschaft
    Inventors: Manfred Dankowski, Willi Hofen
  • Patent number: 4859800
    Abstract: A perhydrolysis system is provided which includes peroxyacid precursors and a source of peroxygen. Upon dissolution in water these compositions provide high yields of a novel peroxyacid having the structure ##STR1## where R is hydrogen or an alkyl of not more than 5 carbon atoms. The precursor may include hydroxyl nitrogen derivatives as leaving groups, since the .alpha.-substituted phenoxy moiety enhances carbonyl reactivity toward perhydroxyl anion.
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: August 22, 1989
    Assignee: The Clorox Company
    Inventors: Alfred G. Zielske, Ronald A. Fong
  • Patent number: 4852989
    Abstract: This invention relates to bleaching compounds and compositions that provide effective and efficient surface bleaching of textiles over a wide range of bleach solution temperatures. The bleaching compounds of the invention yield a peroxyacid with a polar amide link in the hydrophobic chain when used in the bleaching compositions. In a preferred embodiment, the bleaching compositions of the invention are also detergent compositions.
    Type: Grant
    Filed: May 8, 1987
    Date of Patent: August 1, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Michael E. Burns, Frederick E. Hardy