Patents by Inventor Alessandro Zedda

Alessandro Zedda 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: 7790807
    Abstract: The instant invention relates to new compounds of the formula I R1 and R2 are each independently of the other a fluorine containing group, R3 and R4 are each independently of the other hydrogen, a fluorine containing group, C1-C12alkyl, phenyl or R4, together with the carbon atom to which they are bonded, form a C5-C8-cycloalkylidene ring that is unsubstituted or substituted by from 1 to 3 C1-C4alkyl groups; R5, R6, R7 and R8 are each independently of the other hydrogen, C1-C12alkyl or C3-C12alkenyl, X1 and X2 are each independently of the other a direct bond or C1-C12alkylene, m is 1 to 10,000, and n is 0 to 10,000. These new compounds of the formula I are useful as reducers of surface energy for organic materials such as polycarbonates, polyesters or polyketones or their mixtures, blends or alloys.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: September 7, 2010
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Martin Brunner, Archana Kishore Desai, Shrirang Bhikaji Hindalekar, Suhas Dattatraya Sahasrabudhe, Armin Schneider, Paragkumar Nathalal Thanki, Michael Tinkl, Alessandro Zedda, Michèle Gerster, Fabien Jean Brand
  • Publication number: 20080039558
    Abstract: The present instant invention relates to new compounds of the formula (I) wherein T is H or R; R is R1, —CO—R2, —CO—R3—COOH, —COO—R4 or R5; R1 is independently Formula (II) or Formula (III); and to compositions comprising these novel compounds and natural, synthetic or semisynthetic material. Such compounds are useful as water and/or oil repellents.
    Type: Application
    Filed: May 18, 2005
    Publication date: February 14, 2008
    Inventors: Dario Lazzari, Francesca Peri, Martin Brunner, Alessandro Zedda
  • Publication number: 20070155854
    Abstract: The instant invention relates to new compounds of the formula I R1 and R2 are each independently of the other a fluorine containing group, R3 and R4 are each independently of the other hydrogen, a fluorine containing group, C1-C12alkyl, phenyl or R4, together with the carbon atom to which they are bonded, form a C5-C8-cycloalkylidene ring that is unsubstituted or substituted by from 1 to 3 C1-C4alkyl groups; R5, R6, R7 and R8 are each independently of the other hydrogen, C1-C12alkyl or C3-C12alkenyl, X1 and X2 are each independently of the other a direct bond or C1-C12alkylene, m is 1 to 10,000, and n is 0 to 10,000. These new compounds of the formula I are useful as reducers of surface energy for organic materials such as polycarbonates, polyesters or polyketones or their mixtures, blends or alloys.
    Type: Application
    Filed: December 8, 2004
    Publication date: July 5, 2007
    Applicant: CIBA SPECIALTY CHEMICALS CORP.
    Inventors: Martin Brunner, Alessandro Zedda, Michele Gerster, Fabien Brand
  • Publication number: 20070037940
    Abstract: The instant invention relates to new metathesis oligomers which are substituted with fluorinated groups. Also disclosed is a polymerisable composition comprising a catalytically effective amount of a penta- or hexavalent ruthenium or osmium carbene catalyst, the process for preparing the metathesis oligomers by applying the reaction conditions of Ring Opening Metathesis Polymerisation (ROMP) to the polymerisable composition. These new methathesis oligomers are useful for increasing the oil and water repellency of organic materials.
    Type: Application
    Filed: September 15, 2004
    Publication date: February 15, 2007
    Inventors: Dario Lazzari, Piero Piccinelli, Alessandro Zedda, Francesca Peri, Martin Brunner
  • Patent number: 7160969
    Abstract: The invention relates to metathesis oligomers wherein one or more alkoxy ether groups are attached to the oligomer moiety. Also disclosed is a polymerizable composition comprising a catalytically effective amount of a penta- or hexavalent ruthenium or osmium carbene catalyst, the process for preparing the metathesis polymer by applying the reaction conditions of Ring Opening Metathesis Polymerization (=ROMP) to the polymerisable composition; and various technical applications of the metathesis oligomers as antifog agents.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: January 9, 2007
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Piero Piccinelli, Manuel Vitali, Alessandro Zedda
  • Patent number: 7122663
    Abstract: The instant invention relates to stable free nitroxyl radicals of formula (I) wherein at least one of the substituents R is —O. and the others are hydrogen or OH; X is —NR1R2, wherein R1 and R2 are independently hydrogen, C1–C18alkyl or together with the nitrogen atom to which they are bound form a 5 or 6 membered ring which may be further interrupted by an O atom. Further subjects of the invention are an oxidation process for alcohols to aldehydes or ketones or to carboxylic acids in the presence of a compound of formula (I) and the use of stable free nitroxyl radicals of formula (I) as oxidation catalysts.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: October 17, 2006
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Alessandro Zedda, Massimiliano Sala, Armin Schneider
  • Patent number: 7109259
    Abstract: A compound of the formula (I) wherein n is preferably 3; G1, G2, G3 and G4 are independently of one another e.g. C1–C4alkyl; A1 is e.g. hydrogen or methyl; A2 is e.g. methylene; A3? and A3? are e.g. C1–C4alkyl; A4 is e.g. C1–C8alkyl; Y is e.g. a group of the formula (IV) ?wherein R1 is e.g. hydrogen or methyl, R2 is e.g. methylene, R3? and R3? are e.g. C1–C4alkyl and R4 is e.g. hydrogen or C1–C8alkyl; and Z is e.g. a group of the formula (VI) ?with A10? and A10? being independently of one another e.g. hydrogen or C1–C4alkyl and A11? and A11? being independently of one another e.g. C2–C6alkylene, is useful for stabilizing an organic material against degradation induced by light, heat or oxidation.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: September 19, 2006
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Dario Lazzari, Mirko Rossi, Graziano Zagnoni, Alessandro Zedda, Stephen Mark Andrews
  • Publication number: 20060167153
    Abstract: The instant invention discloses a film a composition with anti-fog, anti-mist and anti-cloud properties comprising (a) a polyolefin, a polyvinylalcohol, a polyvinylester or mixtures thereof, (b) an effective amount of at least one linear ethoxylated alcohol; and (c) an effective amount of at least one fluorine-containing surfactant. The films are useful as a greenhouse film for agricultural applications.
    Type: Application
    Filed: August 28, 2003
    Publication date: July 27, 2006
    Inventors: Armin Schneider, Alessandro Zedda, Ernst Minder
  • Patent number: 7037964
    Abstract: Polyolefin films having incorporated therein a compound of the formula CH3CH2(CH2CH2)aCH2CH2(OCH2CH2)bOH, where a is 9 to 25 and b is 1 to 10, exhibit superior long lasting fog resistance. The polyolefin films are useful as packaging film for moist products and as a greenhouse film for agricultural applications.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: May 2, 2006
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Anunay Gupta, David Devore, John James McNamara, Alessandro Zedda
  • Publication number: 20060058476
    Abstract: The invention relates to metathesis oligomers wherein one or more alkoxy ether groups are attached to the oligomer moiety. Also disclosed is a polymerisable composition comprising a catalytically effective amount of a penta- or hexavalent ruthenium or osmium carbene catalyst, the process for preparing the metathesis polymer by applying the reaction conditions of Ring Opening Metathesis Polymerisation (=ROMP) to the polymerisable composition; and various technical applications of the metathesis oligomers as antifog agents.
    Type: Application
    Filed: September 22, 2005
    Publication date: March 16, 2006
    Inventors: Piero Piccinelli, Manuele Vitali, Alessandro Zedda
  • Publication number: 20050239927
    Abstract: Polyolefin fibers and filaments, and fabrics made therefrom, are rendered dyeable via a combination of dyeability additives. The dyeability additive combination comprises at least one compound selected from the group consisting of the polyamides, copolyamides and polyetherpolyamides and at least one ethylene vinyl acetate. The dyed polyolefin fibers and fabrics are rendered light stable via the use of a combination of stabilizers, which comprises at least one compound selected from the group consisting of the ultraviolet light stabilizers and at least one compound selected from the group consisting of the hindered amine light stabilizers. The ultraviolet light stabilizers are for example hydroxyphenylbenzotriazoles or tris-aryl-s-triazines. The hindered amine light stabilizers are for example of high molecular weight, for instance greater than 1000 g/mol. The dyes are for example anthraquinone blue dyes, anthraquinone red dyes, diazo red dyes or nitro yellow dyes.
    Type: Application
    Filed: April 15, 2005
    Publication date: October 27, 2005
    Inventors: Andrew Leggio, John McNamara, Jean-Roch Pauquet, Paul Shields, Alessandro Zedda
  • Patent number: 6864325
    Abstract: The invention relates to metathesis polymers wherein an aromatic group that has UV-light absorbing properties is attached with a bridge group to the polymer. Also disclosed is a polymerizable composition comprising a catalytically effective amount of a penta- or hexavalent ruthenium or osmium carbene catalyst, the process for preparing the metathesis polymer by applying the reaction conditions of Ring Opening Metathesis Polymerization (=ROMP) to the polymerizable composition; and various technical applications of the metathesis polymers.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: March 8, 2005
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Alessandro Zedda, Dario Lazzari, Massimiliano Sala, Michela Bonora, Manuele Vitali, Paul Adriaan Van Der Schaaf
  • Publication number: 20040234801
    Abstract: Polyolefin films having incorporated therein a compound of the formula CH3CH2(CH2CH2)aCH2CH2(OCH2CH2)bOH, where a is 9 to 25 and b is 1 to 10, exhibit superior long lasting fog resistance. The polyolefin films are useful as packaging film for moist products and as a greenhouse film for agricultural applications.
    Type: Application
    Filed: June 30, 2004
    Publication date: November 25, 2004
    Inventors: Anunay Gupta, David Devore, John James McNamara, Alessandro Zedda
  • Patent number: 6784235
    Abstract: Polyolefin films having incorporated therein a compound of the formula CH3CH2(CH2CH2)aCH2CH2(OCH2CH2)bOH, where a is 9 to 25 and b is 1 to 10, exhibit superior long lasting fog resistance. The polyolefin films are useful as packaging film for moist products and as a greenhouse film for agricultural applications.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: August 31, 2004
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Anunay Gupta, David Devore, John James McNamara, Alessandro Zedda
  • Patent number: 6762226
    Abstract: Polyoxymethylene, blends of polycarbonate with acrylonitrile-butadiene-styrene terpolymer, and coatings based on a functional acrylate resin and a crosslinking agent, which are stabilized by addition of a compound of the formula I wherein s is from the range 1 to 8; R1, R2, R3 and R4, independently of each other, are C1-C4alkyl, or R1 and R2 or R3 and R4, together with the carbon atom to which they are bound, form a cyclopentyl or cyclohexyl ring; R5 is hydrogen; C1-C18alkyl; oxyl; OH; CH2CN; C1-C18alkoxy; C5-C12cycloalkoxy; C3-C8alkenyl; C3-C8alkynyl; C7-C12phenylalkyl; C7-C15phenylalkyl, which is substituted on the phenyl ring by 1, 2 or 3 radicals selected from C1-C4alkyl and C1-C4alkoxy; C7-C15phenylalkoxy; C7-C15phenylalkoxy, which is substituted on the phenyl ring by 1, 2 or 3 radicals selected from C1-C4alkyl and C1-C4alkoxy; or R5 is C1-C8alkanoyl; C3-C5alkenoyl; C1-C18alkanoyloxy; glycidyl; or a group —CH2CH(OH)-G, in which G is hydrogen, methyl or phenyl; and A is as descri
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: July 13, 2004
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Alessandro Zedda, Graziano Zagnoni, Massimiliano Sala, Dario Lazzari, Stephen Mark Andrews
  • Publication number: 20040063932
    Abstract: The instant invention relates to stable free nitroxyl radicals of formula (I) at least one of the substituents R is —O. and the others are hydrogen or OH; X is —NR1R2, wherein R1 and R2 are independently hydrogen, C1-C18alkyl or together with the nitrogen atom to which they are bound from a 5 or 6 membered ring which may be further interrupted by an O atom. Further subjects of the invention are an oxidation process for alcohols to aldehydes or ketones or to carboxylic acids in the presence of a compound of formula (I) and the use of stable free nitroxyl radicals of formula (I) as oxidation catalysts.
    Type: Application
    Filed: July 18, 2003
    Publication date: April 1, 2004
    Inventors: Alessandro Zedda, Massimiliano Sala, Armin Schneider
  • Patent number: 6677451
    Abstract: A new process is described for the preparation of a compound of the formula I wherein R1, R2, R3 and R4, independently of each other, are C1-C8alkyl or C1-C5hydroxyalkyl, or R1 and R2 together with the carbon atom they are attached to are C5-C12cycloalkyl, or R3 and R4 together with the carbon atom they are attached to are C5-C12cycloalkyl; R5, R6, R7, R8 and R9, independently of each other, are H, C1-C8alkyl, C2-C8alkenyl, C5-C12aryl, C1-C4haloalkyl, an electron withdrawing group, or C6-C12aryl which is substituted by a residue selected from C1-C4alkyl, C1-C4alkoxy, halogen; and R7 and R8 together may also form a chemical bond; and R is an organic linking group containing 2-500 carbon atoms and forming, together with the carbon atoms it is directly connected to and the nitrogen atom, a substituted, 5-, 6 or 7-membered cyclic ring structure; characterized in that a compound of the formula II is oxidized.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: January 13, 2004
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Alessandro Zedda, Gianluca Ferri, Massimiliano Sala
  • Patent number: 6642383
    Abstract: Compounds of the formula (I) wherein p is zero or 1; q and r, independently of each other, are an integer from 1 to 6; and s is a number ranging from 1 to 8; X is —O— or, when p is 1, X is also a group Rw, Rx, Ry and Rz are, independently of each other, C1-C18alkyl, C5-C12cycloalkyl or C1-C5hydroxyalkyl, especially methyl; R1 is hydrogen; C1-C18alkyl; oxyl; OH; CH2CN; C1-C18alkoxy; C5-C12cycloalkoxy; C3-C8alkenyl; C3-C8alkynyl; C7-C12phenylalkyl; C7-C15phenylalkyl, which is substituted on the phenyl ring by 1, 2 or 3 radicals selected from C1-C4alkyl and C1-C4alkoxy; C7-C15phenylalkoxy; C7-C15phenylalkoxy, which is substituted on the phenyl ring by 1, 2 or 3 radicals selected from C1-C4alkyl and C1-C4alkoxy; or R1 is C1-C8alkanoyl; C3-C5alkenoyl; C1-C18alkanoyloxy; glycidyl; or a group —CH2CH(OH)—G, in which G is hydrogen, methyl or phenyl; R2 is hydrogen, C1-C8alkyl, C5-C12cycloalkyl or C1-C4hydroxyalkyl; R3, R4, R5 independently of each other
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: November 4, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Dario Lazzari, Graziano Zagnoni, Mirko Rossi, Alessandro Zedda, Valerio Borzatta, Stephen Mark Andrews
  • Publication number: 20030191242
    Abstract: The invention relates to metathesis polymers wherein an aromatic group that has UV-light absorbing properties is attached with a bridge group to the polymer. Also disclosed is a polymerisable composition comprising a catalytically effective amount of a penta- or hexavalent ruthenium or osmium carbene catalyst, the process for preparing the metathesis polymer by applying the reaction conditions of Ring Opening Metathesis Polymerisation (=ROMP) to the polymerisable composition; and various technical applications of the metathesis polymers.
    Type: Application
    Filed: November 29, 2002
    Publication date: October 9, 2003
    Inventors: Alessandro Zedda, Dario Lazzari, Massimiliano Sala, Michela Bonora, Manuele Vitali, Paul Adriaan Van Der Schaaf
  • Publication number: 20030139500
    Abstract: Polyoxymethylene, blends of polycarbonate with acrylonitrile-butadiene-styrene terpolymer, and coatings based on a functional acrylate resin and a crosslinking agent, which are stabilized by addition of a compound of the formula I 1
    Type: Application
    Filed: October 15, 2002
    Publication date: July 24, 2003
    Inventors: Alessandro Zedda, Graziano Zagnoni, Massimiliano Sala, Dario Lazzari, Stephen Mark Andrews