Patents by Inventor Pascal Xanthopoulos

Pascal Xanthopoulos 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: 20220127541
    Abstract: The present invention relates to a lubricating composition comprising a base oil and an antioxidant additive, said antioxidant additive comprising a phenolic antioxidant, an amine antioxidant, and a tocopherol supplement comprising at least one member of the list consisting of: beta-tocopherol, delta-tocopherol and gamma-tocopherol. The present invention also relates to a use of a lubricating composition according to the invention, in a combustion engine.
    Type: Application
    Filed: January 29, 2020
    Publication date: April 28, 2022
    Inventor: Pascal XANTHOPOULOS
  • Patent number: 8173731
    Abstract: The instant invention relates to a composition and process for the stabilization of halogen containing polymer slurries, in particular polyvinylchloride (PVC). The composition comprises a halogen containing polymer in the form of an aqueous suspension or emulsion, a partially hindered phenolic antioxidant and selected sulfur containing antioxidants, which are both solid at 20° C. A further aspect of the invention is the use of specific antioxidant mixtures for the stabilization of halogen containing polymer suspensions or emulsions, in particular PVC.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: May 8, 2012
    Assignee: BASF SE
    Inventors: Alex Wegmann, Pascal Xanthopoulos
  • Publication number: 20110112228
    Abstract: The instant invention relates to a composition and process for the stabilization of halogen containing polymer slurries, in particular polyvinylchloride (PVC). The composition comprises a halogen containing polymer in the form of an aqueous suspension or emulsion, a partially hindered phenolic antioxidant and selected sulfur containing antioxidants, which are both solid at 20° C. A further aspect of the invention is the use of specific antioxidant mixtures for the stabilization of halogen containing polymer suspensions or emulsions, in particular PVC.
    Type: Application
    Filed: November 1, 2010
    Publication date: May 12, 2011
    Inventors: Alex Wegmann, Pascal Xanthopoulos
  • Publication number: 20110054220
    Abstract: The present invention describes a process for preventing the formation of aldehydic contaminants in polyether polyols, polyester polyols or polyurethanes which comprises incorporating into said polyether polyols, polyester polyols or polyurethanes an effective amount of a) a phenolic antioxidant and b) one or more compounds selected from (i) aminic antioxidants, (ii) benzofuran-2-ones, (iii) phosphites or phosphonites and (iv) mixtures thereof.
    Type: Application
    Filed: November 4, 2010
    Publication date: March 3, 2011
    Inventors: CHIN SIONG GOH, Kerstin Schrinner, Pascal Xanthopoulos
  • Patent number: 7879928
    Abstract: The present invention describes a process for preventing the formation of aldehydic contaminants in polyether polyols, polyester polyols or polyurethanes which comprises incorporating into said polyether polyols, polyester polyols or polyurethanes an effective amount of a) a phenolic antioxidant, b) one or more compounds selected from (i) aminic antioxidants, (ii) benzofuran-2-ones, and (iii) phosphites or phosphonites, or (iv) mixtures thereof.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: February 1, 2011
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Chin Siong Goh, Kerstin Schrinner, Pascal Xanthopoulos
  • Publication number: 20100048776
    Abstract: The instant invention relates to a composition and process for the stabilization of halogen containing polymer slurries, in particular polyvinylchloride (PVC). The composition comprises a halogen containing polymer in the form of an aqueous suspension or emulsion, a partially hindered phenolic antioxidant and selected sulfur containing antioxidants, which are both solid at 20° C. A further aspect of the invention is the use of specific antioxidant mixtures for the stabilization of halogen containing polymer suspensions or emulsions, in particular PVC.
    Type: Application
    Filed: February 24, 2009
    Publication date: February 25, 2010
    Inventors: Alex Wegmann, Pascal Xanthopoulos
  • Publication number: 20100036016
    Abstract: The instant invention relates to a stabilized composition of methylmethacrylate-butadiene-styrene graft copolymers with selected sterically hindered phenolic antioxidants and thioethers. Further subjects of the invention are a process for the stabilization of methylmethacrylate-butadiene-styrene graft copolymers and the use of selected sterically hindered phenolic antioxidants together with a thioether for the thermal stabilization of said graft copolymer.
    Type: Application
    Filed: February 2, 2009
    Publication date: February 11, 2010
    Inventors: Alex Wegmann, Pascal Xanthopoulos
  • Publication number: 20090182078
    Abstract: The present invention describes a process for preventing the formation of aldehydic contaminants in polyether polyols, polyester polyols or polyurethanes which comprises incorporating into said polyether polyols, polyester polyols or polyurethanes an effective amount of a) a phenolic antioxidant, b) one or more compounds selected from (i) aminic antioxidants, (ii) benzofuran-2-ones, and (iii) phosphites or phosphonites, or (iv) mixtures thereof.
    Type: Application
    Filed: April 11, 2006
    Publication date: July 16, 2009
    Inventors: Chin Siong Goh, Kerstin Schrinner, Pascal Xanthopoulos
  • Publication number: 20080249214
    Abstract: The instant invention relates to a stabilized composition of methylmethacrylate-butadiene-styrene graft copolymers with selected sterically hindered phenolic antioxidants and thioethers. Further subjects of the invention are a process for the stabilization of methylmethacrylate-butadiene-styrene graft copolymers and the use of selected sterically hindered phenolic antioxidants together with a thioether for the thermal stabilization of said graft copolymer.
    Type: Application
    Filed: September 1, 2004
    Publication date: October 9, 2008
    Inventors: Alex Wegmann, Pascal Xanthopoulos
  • Publication number: 20070185250
    Abstract: Polyether polyols, polyester polyols or polyurethanes which possess outstanding stability to oxidative, thermal or light-induced degradation and which possess a reduced fogging contribution of the polymers comprise at least a liquid compound of the formula (I) wherein R1 is C1-C4alkyl, R2 is a branched C12-C25alkyl, and X is C1-C8alkylene or C1-C4alkyl substituted C2-C8alkylene.
    Type: Application
    Filed: November 24, 2004
    Publication date: August 9, 2007
    Applicant: CIBA SPECIALTY CHEMICALS HOLDING INC.
    Inventors: Dietmar Mäder, Kerstin Schrinner, Pascal Xanthopoulos
  • Publication number: 20070027243
    Abstract: The instant invention relates to a composition and process for the stabilization of halogen containing polymer slurries, in particular polyvinylchloride (PVC). The composition comprises a halogen containing polymer in the form of an aqueous suspension or emulsion, a partially hindered phenolic antioxidant and selected sulfur containing antioxidants, which are both solid at 20° C. A further aspect of the invention is the use of specific antioxidant mixtures for the stabilization of halogen containing polymer suspensions or emulsions, in particular PVC.
    Type: Application
    Filed: October 25, 2004
    Publication date: February 1, 2007
    Inventors: Alex Wegmann, Pascal Xanthopoulos
  • Patent number: 6881774
    Abstract: Synthetic polymers which possess outstanding stability to oxidative, thermal or light-induced degradation comprise as stabilizer at least a compound of the formula I wherein R1 and R2 are each independently of one another hydrogen or C1-C8alkyl, R3 and R4 are each independently of one another C1-C12alkyl, and R5 is C1-C7alkyl.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: April 19, 2005
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Kerstin Schrinner, Pascal Xanthopoulos
  • Publication number: 20030109611
    Abstract: Synthetic polymers which possess outstanding stability to oxidative, thermal or light-induced degradation comprise as stabilizer at least a compound of the formula I 1
    Type: Application
    Filed: September 9, 2002
    Publication date: June 12, 2003
    Inventors: Kerstin Schrinner, Pascal Xanthopoulos