Patents by Inventor Claudio Cavallotti

Claudio Cavallotti has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6080715
    Abstract: Granular compositions comprising .di-elect cons.-phthalimido peroxyhexanoic acid (PAP), a N-oxide of a tertiary amine surfactant and an organic acid with PK.sub.a lower than 3.5 and soluble in water at most for 1% by weight at a temperature of 20.degree. C.
    Type: Grant
    Filed: January 2, 1998
    Date of Patent: June 27, 2000
    Assignee: Ausimont S.p.A.
    Inventors: Ugo Piero Bianchi, Claudio Cavallotti, Claudio Troglia
  • Patent number: 5703242
    Abstract: Purification process of imido-alkancaboxylic acids from contaminants represented by acid-carboxylic, lactam or aminoacids and water comprising:A) Preparation of the imido-alkancarboxylic acid precursor by reaction of an anhydride a1) or the corresponding acids, with an aminoacid b1) with water; or a1) with a lactam b2) and water; at temperatures comprised between 100.degree. and 250.degree. C., under pressure of an inert gas from 1 to 30 bar, for reaction times from 2 to 20 hours; wherein the ratio by moles between a1/(b1 or b2)/water is comprised between 1/1.05-1.1/0.5-2.5; optional addition of water such that it is at least, of 2 moles for mole of a1);B) discharge of the precursor obtained in phase A) in a solvent immiscible with water;C) separation of the aqueous phases from the organic phase;D) recovery of the organic phase for the successive peroxidation reaction.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: December 30, 1997
    Assignee: Ausimont, S.p.A.
    Inventors: Claudio Cavallotti, Gilberto Nucida, Claudio Troglia
  • Patent number: 5703245
    Abstract: Process for reducing the content of water in imido-alkanpercarboxylic acids comprising heating a suspension of imido-alkanpercarboxylc acid in water up to the complete solid melting and subsequent separation of the organic phase from the aqueous phase and recovery of the organic phase containing the imido-alkanpercarboxylic acid.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: December 30, 1997
    Assignee: Ausimont, S.p.A.
    Inventors: Claudio Cavallotti, Gilberto Nucida, Claudio Troglia
  • Patent number: 5688434
    Abstract: A process of bleaching using at least one imide-aromatic (poly)peroxyacid, having a formula: ##STR1## wherein A represents the residue of a benzene or napthalene ring optionally substituted by a COOH or COOOH group, the symbol or symbols R, which may be the same or different from each other, represent a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group, an OH group, a COOH group, a COOOH group, a COOR' group, wherein R' represents a C.sub.1 -C.sub.5 alkyl group, or a substituted C.sub.1 -C.sub.5 alkyl group wherein the substituent is nitro, an OH group or a C.sub.1 -C.sub.5 alkoxy group, and n is an integer from 1 to 5.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: November 18, 1997
    Assignee: Ausimont S.p.A.
    Inventors: Carlo Venturello, Claudio Cavallotti, Fulvio Burzio
  • Patent number: 5536434
    Abstract: This invention relates to imido-derivative peroxycarboxylic acids having the formula I: ##STR1## wherein R and R.sub.1, which may be the same or different, represent hydrogen atoms, alkyl groups, or, taken together with the carbon atoms to which they are linked, give rise to a cyclic aliphatic ring, all of them being optionally substituted; the . . . symbol indicates a simple or an olefinic bond; R.sub.2 represents a hydrogen atom, an alkyl group, or an OH group, and n is an integer different from 0; the process for their preparation and their use as bleaching agents.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: July 16, 1996
    Assignee: Ausimont S.p.A.
    Inventors: Carlo Venturello, Claudio Cavallotti, Elena Bencini, Maria A. Sasso
  • Patent number: 5520844
    Abstract: Bleaching agents constituted by at least one imidearomatic (poly)peroxyacid, having the formula (I): ##STR1## wherein A represents a residue of a substituted or unsubstituted benzene or naphthalene ring, R is a hydrogen atom, a lower alkyl group, an OH group, a COOH group, a COOOH group or a COOR' group wherein R' represents a C.sub.1 -C.sub.5 alkyl group, and n is an integer from 1 to 5.
    Type: Grant
    Filed: January 4, 1991
    Date of Patent: May 28, 1996
    Assignee: Ausimont S.p.A.
    Inventors: Carlo Venturello, Claudio Cavallotti, Fulvio Burzio
  • Patent number: 5487818
    Abstract: A process for separating phthalimido-peroxycaproic acid (PAP) from solutions in organic solvents, wherein the organic solvents have a solubility in water equal to or lower to 10% by weight, is provided. The process employs the following steps:(a) dispersing the solution in an aqueous medium to form a suspension;(b) bubbling an inert gas into the resulting suspension; and(c) recovering PAP from the suspension.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: January 30, 1996
    Assignee: Ausimont S.p.A.
    Inventors: Claudio Cavallotti, Claudio Troglia, Roberto Garaffa
  • Patent number: 5423998
    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: April 13, 1993
    Date of Patent: June 13, 1995
    Assignee: Ausimont S.r.l.
    Inventors: Carlo Venturello, Claudio Cavallotti
  • Patent number: 5310934
    Abstract: Process for purifying phthalimido-peroxycaproic acid (PAP) from chlorinated solvents, by dissolving it in a polar and volatile solvent selected from alcohols, ketones and aliphatic esters, and a following crystallization thereof and solvent stripping.Preferred solvents are aliphatic esters, in particular ethyl acetate.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: May 10, 1994
    Assignee: Ausimont S.p.A.
    Inventors: Claudio Cavallotti, Claudio Troglia, Roberto Garaffa
  • Patent number: 5294362
    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- 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: April 13, 1993
    Date of Patent: March 15, 1994
    Assignee: Ausimont S.r.l.
    Inventors: Carlo Venturello, Claudio Cavallotti
  • Patent number: 5292447
    Abstract: Heterocyclic (poly)peroxycarboxylic acids having a N-amidic heteroatom, which have the formula:R--(CH.sub.2).sub.m --R' (I)wherein:R and R', alike or different from each other, represent hydrogen atoms or a group: ##STR1## with the proviso that at least one of R and R' shall be different from H, and wherein the other symbols have the following meaning:R" represents a hydrogen atom or any other substituent non-reactive in the presence of the active oxygen of the peroxycarboxylic group and/or under the preparation conditions;m represents a number between 1 to 12;n represents a number selected from 0, 1 and 2;p represents a number between 1 and 3; their process of preparation and their use as bleaching agents.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: March 8, 1994
    Assignee: Ausimont S.r.l.
    Inventors: Carlo Venturello, Claudio Cavallotti
  • Patent number: 5268472
    Abstract: Nitrogen-containing heterocyclic (poly) peroxycarboxylic acid monopersulfates which have the formula: ##STR1## wherein the symbols have the following meanings: R represents a hydrogen atom or an alkyl, (hetero)cycloalkyl, (hetero)aryl, alkyl-aryl or arylalkyl group, wherein said groups are optionally substituted, or a carboxylic group or a peroxycarboxylic group, or any other substituents non-reactive in the presence of the peroxycarboxylic group;R.sup.1 represents an alkyl group > C.sub.5 ;n is a number selected from 0,1 and 2;m is a number selected from 1, 2 and 3;and the heterocyclic ring may be in its turn condensed with at least one further (hetero) aromatic or (hetero)cycloalkylic ring. The invention relates to a preparation process for, and to their use, as bleaching agents.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: December 7, 1993
    Assignee: Ausimont S.p.A.
    Inventors: Carlo Venturello, Claudio Cavallotti, Fiorella Achilli
  • 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: 5208340
    Abstract: Process for producing an aryl-imido-peralkanoic acid by means of the peroxidation with H.sub.2 O.sub.2 of the corresponding alkanoic (non-peroxy) acid, in the presence of a strong acid with a pKa value equal to, or lower than 3, and in the presence of a halogenated solvent, characterized in that said solvent is CH.sub.2 Cl.sub.2 or CHCl.sub.3, that the amount of alkanoic acid submitted to peroxidation is equal to or smaller than the solubility threshold of said alkanoic acid (in said solvent) and that a solution of said acid in said solvent is reacted with H.sub.2 O.sub.2 (at 10.degree.-35.degree. C.), with the molar ratio of said strong acid to said alkanoic acid being lower than 2.
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: May 4, 1993
    Assignee: Ausimont S.p.A.
    Inventors: Claudio Cavallotti, Michele Merenda, Alessandro Zaro, Attilio Lagostina, Ugo P. Bianchi
  • Patent number: 5180516
    Abstract: Heterocyclic (poly)peroxycarboxylic acids having a N-amidic heteroatom, which have the formula:R--(CH.sub.2).sub.m --R' (I)wherein:R and R', alike or different from each other, represent hydrogen atoms or a group: ##STR1## with the proviso that at least one of R and R' shall be different from H, and wherein the other symbols have the following meaning:R" represents a hydrogen atom or any other substituent non-reactive in the presence of the active oxygen of the peroxycarboxylic group and/or under the preparation conditions;m represents a number between 1 to 12;n represents a number selected from 0, 1 and 2;p represents a number between 1 and 3;their process of preparation and their use as bleaching agents.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: January 19, 1993
    Assignee: Ausimont S.r.l.
    Inventors: Carlo Venturello, Claudio Cavallotti
  • 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: 5108648
    Abstract: Pyridine-3-peroxycarboxylic acid monopersulfate is herein disclosed, which has the formula: ##STR1## The process for its preparation and its use as bleaching agent.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: April 28, 1992
    Assignee: Ausimont S.r.l.
    Inventors: Carlo Venturello, Claudio Cavallotti
  • 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: 5041546
    Abstract: Heterocyclic (poly)peroxycarboxylic acids having a N-amidic heteroatom, which have the formula:R--(CH.sub.2).sub.m --R' (I)wherein:R and R', alike or different from each other, represent hydrogen atoms or a group: ##STR1## with the proviso that at least one of R and R' shall be different from H, and wherein the other symbols have the following meaning:R" represents a hydrogen atom or any other substituent non-reactive in the presence of the active oxygen of the peroxycarboxylic group and/or under the preparation conditions;m represents a number between 1 to 12;n represents a number selected from 0, 1 and 2;p represents a number between 1 and 3;their process of preparation and their use as bleaching agents.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: August 20, 1991
    Assignee: Ausimont S.r.l.
    Inventors: Carlo Venturello, Claudio Cavallotti
  • Patent number: 4994573
    Abstract: Pyridine-3-peroxycarboxylic acid monopersulfate is herein disclosed, which has the formula: ##STR1## The process for its preparation and its use as bleaching agent.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: February 19, 1991
    Assignee: Ausimont S.r.l.
    Inventors: Carlo Venturello, Claudio Cavallotti