Patents Assigned to ATOFINA Research
  • Publication number: 20070178303
    Abstract: The present invention provides monofilaments or stretched tapes, unwoven or woven into raffia, prepared with metallocene-produced polyethylene having long chain branches.
    Type: Application
    Filed: April 7, 2004
    Publication date: August 2, 2007
    Applicant: ATOFINA RESEARCH
    Inventors: Eric Maziers, Vincent Stephenne
  • Patent number: 6992136
    Abstract: The invention relates to a novel transparent block copolymer and its process for the manufacture. The process comprises a first partial killing of at least the living copolymeric species R-S1-B1-M with a multi-functional deactivation agent where S1 is a monovinyl-substituted aromatic homopolymer, B1, is a conjugated diene homopolymer, M is an alkali metal and R is an alkyl (RM being an initiator) and further comprises a second total deactivation of at least the living tapered block copolymeric species R-S1-B1-B2/S2-M (obtained by adding a feed B2/S2 to the reaction medium) by a mono-functional deactivation agent (the terminating agent).
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: January 31, 2006
    Assignee: Atofina Research
    Inventors: Thierry Coupin, Jean Philippe Hallet
  • Patent number: 6858170
    Abstract: The present invention relates to a process for preparing silica-alumina carriers preferably under the form of extrudates. Further, the present invention also provides hydrogenation catalysts prepared thereof. These catalysts are used in an improved process for the reduction of the aromatic hydrocarbons content present in hydrocarbon streams.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: February 22, 2005
    Assignee: ATOFINA Research
    Inventors: Hugo Van Thillo, Philippe Bodart, Christian Lamotte, Jacques Grootjans
  • Patent number: 6710134
    Abstract: A polypropylene fibre including at least 80% by weight of a first isotactic polypropylene produced by a metallocene catalyst, and from 5 to 20 by weight of a second isotactic polypropylene produced by a Ziegler-Natta catalyst.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: March 23, 2004
    Assignee: Atofina Research
    Inventor: Axel Demain
  • Patent number: 6699919
    Abstract: Polypropylene having improved long chain branching increased melt strength obtained by irradiating polypropylene with an electron beam having an energy of at least 5 MeV and with a radiation dose of from 5 to 100 kGray in the presence of a grafting agent, the branching index of the obtained polypropylene being lower than 0.7.
    Type: Grant
    Filed: January 4, 2002
    Date of Patent: March 2, 2004
    Assignee: Atofina Research
    Inventor: Yves Charlier
  • Patent number: 6646051
    Abstract: A polypropylene fibre including a polypropylene blend comprising up to 15% by weight of sPP at least 10% by weight of a first isotactic polypropylene produced by a metallocene catalyst, and optionally a second isotactic polypropylene produced by a Ziegler-Natta catalyst.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: November 11, 2003
    Assignee: Atofina Research
    Inventor: Axel Demain
  • Patent number: 6331265
    Abstract: Provided is a method for the production of a reinforced polymer, which method comprises: (a) introducing carbon nanotubes into a polymer to provide a mixture of the polymer and the nanotubes; (b) stretching the mixture at or above the melting temperature (Tm) of the polymer to orient the carbon nanotubes; and (c) stretching the mixture in the solid state to further orient the carbon nanotubes.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: December 18, 2001
    Assignee: Atofina Research
    Inventors: Marc Dupire, Jacques Michel