Patents by Inventor Cristian Gambarotti

Cristian Gambarotti 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).

  • Publication number: 20230207154
    Abstract: A flame-retardant cable includes at least one core comprising a conductor and at least one protecting layer surrounding the core. The protecting layer is made from a low smoke zero halogen (LSOH) flame-retardant polymer composition comprising at least 70 phr of a polyethylene homopolymer or copolymer having a density lower than 0.90 g/cm3 as a halogen-free polymeric base, and: a) 100 to 800 phr of at least one metal hydroxide; and b) at least 10 phr of a tannin.
    Type: Application
    Filed: December 21, 2022
    Publication date: June 29, 2023
    Applicants: Prysmian S.p.A., Politecnico di Milano
    Inventors: Elena RODA, Cristian GAMBAROTTI, Ada TRUSCELLO, Franco GALLETTI
  • Patent number: 8598388
    Abstract: Process for the preparation of phenol and cyclohexanone which comprises: a. the synthesis of cyclohexylbenzene by the hydro-alkylation of benzene by contact with hydrogen or the alkylation of benzene with cyclohexene using Y zeolites; b. the selective aerobic oxidation of cyclohexylbenzene to the corresponding hydroperoxide catalyzed by N-hydroxy-derivatives in the presence of polar solvents; and c. the scission of the hydroperoxide of cyclohexylbenzene to phenol and cyclohexanone by homogeneous or heterogeneous acid catalysts; characterized in that the synthesis of cyclohexylbenzene takes place in the presence of a catalytic system comprising a Y zeolite and an inorganic ligand wherein the Y zeolite has a crystalline structure with openings consisting of 12 tetrahedra and the inorganic ligand is ?-alumina, and wherein said catalytic composition is characterized by a pore volume, obtained by adding the mesoporosity and macroporosity fractions, greater than or equal to 0.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: December 3, 2013
    Assignee: Polimeri Europa S.p.A.
    Inventors: Elena Bencini, Cristian Gambarotti, Lucio Melone, Nadia Pastori, Simona Prosperini, Carlo Punta, Francesco Recupero
  • Patent number: 8445729
    Abstract: Process for the preparation of hydroperoxides of alkylbenzenes characterized by the fact that the alkylbenzene reacts with oxygen in the presence of a catalytic system which includes an N-hydroxyimide or an N-hydroxysulfamide and a polar solvent.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: May 21, 2013
    Assignee: Polimeri Europa S.p.A.
    Inventors: Francesco Minisci, Carlo Punta, Francesco Recupero, Cristian Gambarotti, Raffaele Spaccini, Angelo Clerici, Alberto Clerici
  • Patent number: 8420867
    Abstract: Process for the preparation of hydroperoxides of alkylbenzenes characterized by the fact that the alkylbenzene reacts with oxygen in the presence of a catalytic system consisting of an N-hydroxyimide associated with a peroxide activator having a peracid or dioxyrane structure, possibly generated in situ.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: April 16, 2013
    Assignee: Polimeri Europa S.p.A.
    Inventors: Francesco Minisci, Carlo Punta, Francesco Recupero, Cristian Gambarotti, Raffaele Spaccini, Angelo Clerici, Alberto Clerici
  • Publication number: 20120157718
    Abstract: Process for the preparation of phenol and cyclohexanone which comprises: a. the synthesis of cyclohexylbenzene by the hydro-alkylation of benzene by contact with hydrogen or the alkylation of benzene with cyclohexene using Y zeolites; b. the selective aerobic oxidation of cyclohexylbenzene to the corresponding hydroperoxide catalyzed by N-hydroxy-derivatives in the presence of polar solvents; and c. the scission of the hydroperoxide of cyclohexylbenzene to phenol and cyclohexanone by homogeneous or heterogeneous acid catalysts; characterized in that the synthesis of cyclohexylbenzene takes place in the presence of a catalytic system comprising a Y zeolite and an inorganic ligand wherein the Y zeolite has a crystalline structure with openings consisting of 12 tetrahedra and the inorganic ligand is ?-alumina, and wherein said catalytic composition is characterized by a pore volume, obtained by adding the mesoporosity and macroporosity fractions, greater than or equal to 0.
    Type: Application
    Filed: June 23, 2010
    Publication date: June 21, 2012
    Applicant: POLIMERI EUROPA S.P.A.
    Inventors: Elena Bencini, Cristian Gambarotti, Lucio Melone, Nadia Pastori, Simona Prosperini, Carlo Punta, Francesco Recupero
  • Publication number: 20110098509
    Abstract: The invention relates to a process for the preparation of phenol which comprises the aerobic oxidation of cumene to hydroperoxide with high conversions and selectivities, in the presence of new catalytic systems, extremely mild conditions and the subsequent acid decomposition of the hydroperoxide to phenol and acetone.
    Type: Application
    Filed: September 20, 2007
    Publication date: April 28, 2011
    Applicant: POLIMERI EUROPA S.p.A.
    Inventors: Francesco Minisci, Ombretta Porta, Angelo Clerici, Alberto Clerici, Francesco Recupero, Carlo Punta, Cristian Gambarotti, Monica Pierini
  • Publication number: 20110082320
    Abstract: Process for the preparation of hydroperoxides of alkylbenzenes characterized by the fact that the alkylbenzene reacts with oxygen in the presence of a catalytic system consisting of an N-hydroxyimide associated with a peroxide activator having a peracid or dioxyrane structure, possibly generated in situ.
    Type: Application
    Filed: March 13, 2009
    Publication date: April 7, 2011
    Applicant: Polimeri Europa S.P.A.
    Inventors: Francesco Minisci, Ombretta Porta, Carlo Punta, Francesco Recupero, Cristian Gambarotti, Raffaele Spaccini, Angelo Clerici, Alberto Clerici