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).
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Patent number: 7790807Abstract: 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: GrantFiled: December 8, 2004Date of Patent: September 7, 2010Assignee: 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
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Publication number: 20080039558Abstract: 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: ApplicationFiled: May 18, 2005Publication date: February 14, 2008Inventors: Dario Lazzari, Francesca Peri, Martin Brunner, Alessandro Zedda
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Publication number: 20070155854Abstract: 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: ApplicationFiled: December 8, 2004Publication date: July 5, 2007Applicant: CIBA SPECIALTY CHEMICALS CORP.Inventors: Martin Brunner, Alessandro Zedda, Michele Gerster, Fabien Brand
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Publication number: 20070037940Abstract: 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: ApplicationFiled: September 15, 2004Publication date: February 15, 2007Inventors: Dario Lazzari, Piero Piccinelli, Alessandro Zedda, Francesca Peri, Martin Brunner
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Patent number: 7160969Abstract: 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: GrantFiled: March 8, 2002Date of Patent: January 9, 2007Assignee: Ciba Specialty Chemicals Corp.Inventors: Piero Piccinelli, Manuel Vitali, Alessandro Zedda
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Patent number: 7122663Abstract: 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: GrantFiled: January 15, 2002Date of Patent: October 17, 2006Assignee: Ciba Specialty Chemicals Corp.Inventors: Alessandro Zedda, Massimiliano Sala, Armin Schneider
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Patent number: 7109259Abstract: 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: GrantFiled: May 3, 2002Date of Patent: September 19, 2006Assignee: Ciba Specialty Chemicals CorporationInventors: Dario Lazzari, Mirko Rossi, Graziano Zagnoni, Alessandro Zedda, Stephen Mark Andrews
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Publication number: 20060167153Abstract: 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: ApplicationFiled: August 28, 2003Publication date: July 27, 2006Inventors: Armin Schneider, Alessandro Zedda, Ernst Minder
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Patent number: 7037964Abstract: 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: GrantFiled: June 30, 2004Date of Patent: May 2, 2006Assignee: Ciba Specialty Chemicals CorporationInventors: Anunay Gupta, David Devore, John James McNamara, Alessandro Zedda
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Publication number: 20060058476Abstract: 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: ApplicationFiled: September 22, 2005Publication date: March 16, 2006Inventors: Piero Piccinelli, Manuele Vitali, Alessandro Zedda
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Publication number: 20050239927Abstract: 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: ApplicationFiled: April 15, 2005Publication date: October 27, 2005Inventors: Andrew Leggio, John McNamara, Jean-Roch Pauquet, Paul Shields, Alessandro Zedda
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Patent number: 6864325Abstract: 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: GrantFiled: February 13, 2001Date of Patent: March 8, 2005Assignee: Ciba Specialty Chemicals CorporationInventors: Alessandro Zedda, Dario Lazzari, Massimiliano Sala, Michela Bonora, Manuele Vitali, Paul Adriaan Van Der Schaaf
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Publication number: 20040234801Abstract: 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: ApplicationFiled: June 30, 2004Publication date: November 25, 2004Inventors: Anunay Gupta, David Devore, John James McNamara, Alessandro Zedda
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Patent number: 6784235Abstract: 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: GrantFiled: May 3, 2001Date of Patent: August 31, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Anunay Gupta, David Devore, John James McNamara, Alessandro Zedda
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Patent number: 6762226Abstract: 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 descriType: GrantFiled: October 15, 2002Date of Patent: July 13, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Alessandro Zedda, Graziano Zagnoni, Massimiliano Sala, Dario Lazzari, Stephen Mark Andrews
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Publication number: 20040063932Abstract: 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: ApplicationFiled: July 18, 2003Publication date: April 1, 2004Inventors: Alessandro Zedda, Massimiliano Sala, Armin Schneider
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Patent number: 6677451Abstract: 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: GrantFiled: November 20, 2001Date of Patent: January 13, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Alessandro Zedda, Gianluca Ferri, Massimiliano Sala
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Patent number: 6642383Abstract: 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 otherType: GrantFiled: May 15, 2001Date of Patent: November 4, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Dario Lazzari, Graziano Zagnoni, Mirko Rossi, Alessandro Zedda, Valerio Borzatta, Stephen Mark Andrews
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Publication number: 20030191242Abstract: 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: ApplicationFiled: November 29, 2002Publication date: October 9, 2003Inventors: Alessandro Zedda, Dario Lazzari, Massimiliano Sala, Michela Bonora, Manuele Vitali, Paul Adriaan Van Der Schaaf
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Publication number: 20030139500Abstract: 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 1Type: ApplicationFiled: October 15, 2002Publication date: July 24, 2003Inventors: Alessandro Zedda, Graziano Zagnoni, Massimiliano Sala, Dario Lazzari, Stephen Mark Andrews