Patents by Inventor Stephane Carlotti

Stephane Carlotti 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).

  • Use of alkali metal-silica gel (M-SG) materials in solvent and monomer drying and purification for their use in anionic polymerization
    Patent number: 7932329
    Abstract: Stage I Group 1 metal/porous metal oxide compositions or Stage II Group 1 metal/porous metal oxide compositions are shown to be useful to remove impurities and act as drying agents for various types of solvents and for olefinic monomers used in anionic polymerizations. One important advantage of these compositions is their ability to dry simultaneously solvent and monomers, without inducing a significant polymerization of the latter. Another important characteristic is the capacity of the compositions to be totally inactive toward conventional anionic polymerization which allows them to be left in situ during the polymerization itself.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: April 26, 2011
    Assignees: Signa Chemistry, Inc., Laboratoire de Chimie des Polymeres Organiques
    Inventors: Mana Ito, Stephane Carlotti, Alain Deffieux, Michael Lefenfeld
  • USE OF ALKALI METAL-SILICA GEL (M-SG) MATERIALS IN SOLVENT AND MONOMER DRYING AND PURIFICATION FOR THEIR USE IN ANIONIC POLYMERIZATION
    Publication number: 20090105430
    Abstract: Stage I Group 1 metal/porous metal oxide compositions or Stage II Group 1 metal/porous metal oxide compositions are shown to be useful to remove impurities and act as drying agents for various types of solvents and for olefinic monomers used in anionic polymerizations. One important advantage of these compositions is their ability to dry simultaneously solvent and monomers, without inducing a significant polymerization of the latter. Another important characteristic is the capacity of the compositions to be totally inactive toward conventional anionic polymerization which allows them to be left in situ during the polymerization itself.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 23, 2009
    Applicants: SIGNA CHEMISTRY, INC., Laboratoire de Chimie des Polymeres Organiques, ENSCPB-CNRS
    Inventors: Mana ITO, Stephane CARLOTTI, Alain DEFFIEUX, Michael LEFENFELD
  • Method for the anionic polymerization of oxirans
    Publication number: 20070173576
    Abstract: The invention relates to a process for preparation of homopolymers composed of oxiranes, or of copolymers composed of oxirans and comonomers, via anionic polymerization, which comprises carrying out a polymerization in the presence of a quaternary ammonium and/or phosphonium compound and of a mononuclear organylaluminum compound.
    Type: Application
    Filed: October 30, 2004
    Publication date: July 26, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Philippe Desbois, Alain Deffieux, Stephane Carlotti, Cyrille Billouard
  • Method for the anionic polymerisation of oxiranes
    Publication number: 20070100097
    Abstract: Process for preparing homopolymers of oxiranes, or for preparing copolymers of oxiranes and comonomers, via anionic polymerization in the presence of an alkali metal compound and of an organylaluminum compound, which comprises avoiding any use of crown ethers or of cryptands during the polymerization.
    Type: Application
    Filed: May 10, 2004
    Publication date: May 3, 2007
    Applicant: BASF AKTIENGESELLSCHAFT Patents, Trademarks and Licenses
    Inventors: Philippe Desbois, Alain Deffieux, Stephane Carlotti, Cyrille Billouard
  • Method for anionic polymerisation of $g(a)-methylstyrene
    Publication number: 20060160971
    Abstract: Process for preparing homopolymers of ?-methylstyrene, or copolymers of ?-methylstyrene and comonomers, by anionic polymerization in the presence of an initiator composition, which comprises using an initiator composition in which potassium hydride and at least one organylaluminum compound are present.
    Type: Application
    Filed: January 28, 2004
    Publication date: July 20, 2006
    Applicant: BASF AKTIENGESELLSCHAFT Patents, Trademarks and Licenses
    Inventors: Philippe Desbois, Michael Ishaque, Christian Schade, Alain Deffieux, Stephane Carlotti