Patents by Inventor Jan-Dirk van Loon

Jan-Dirk van Loon 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).

  • Components and catalysts for the polymerization of olefins
    Patent number: 7674741
    Abstract: The present invention relates to a solid catalyst component for the polymerization of olefins CH2?CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from y-butyrolactone derivatives of a particular formula. Said catalyst components, when used in the polymerization of olefins and in particular of propylene, are capable to give polymers in high yields and with high isotactic index expressed in terms of high xylene insolubility.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: March 9, 2010
    Assignee: Basell Poliolefine Italia s.r.l.
    Inventors: Yuri Gulevich, Giulio Balbontin, Remco Kelder, Giampiero Morini, Jan Dirk Van Loon
  • Components and catalysts for the polymerization of olefins
    Publication number: 20090118446
    Abstract: The present invention relates to a solid catalyst component for the polymerization of olefins CH2?CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from ?-butyrolactone derivatives of a particular formula. Said catalyst components, when used in the polymerization of olefins and in particular of propylene, are capable to give polymers in high yields and with high isotactic index expressed in terms of high xylene insolubility.
    Type: Application
    Filed: May 27, 2005
    Publication date: May 7, 2009
    Applicant: Basell Poliolefine Italia s.r.l.
    Inventors: Yuri Gulevich, Giulio Balbontin, Remco Kelder, Giampiero Morini, Jan Dirk Van Loon
  • Bridged zirconocene compounds, process for their preparation and their use as catalyst components in the polymerization of olefins
    Patent number: 6673880
    Abstract: Zirconocene compounds with two indenyl ligands linked in the 2 position by means of a two-carbon-atoms divalent bridging group can be suitably used as components of catalysts for the polymerization of olefins. Particularly it is possible to prepare, with high yields, ethylene (co)polymers having low molecular weights and narrow molecular weight distributions, without the need of using considerable amounts of molecular weight regulators, such as hydrogen.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: January 6, 2004
    Assignee: Basell Technology Company B.V.
    Inventors: Colin J. Schaverien, René Ernst, Jan-Dirk van Loon, Tiziano Dall'Occo
  • Bridged zirconocene compounds, process for their preparation and their use as catalyst components in the polymerization of olefins
    Publication number: 20020039962
    Abstract: Zirconocene compounds with two indenyl ligands linked in the 2 position by means of a two-carbon-atoms divalent bridging group can be suitably used as components of catalysts for the polymerization of olefins. Particularly it is possible to prepare, with high yields, ethylene (co)polymers having low molecular weights and narrow molecular weight distributions, without the need of using considerable amounts of molecular weight regulators, such as hydrogen.
    Type: Application
    Filed: October 5, 2001
    Publication date: April 4, 2002
    Applicant: Montell Technology Company B.V.
    Inventors: Colin J. Schaverien, Rene Ernst, Jan-Dirk van Loon, Tiziano Dall'Occo
  • Bridged zirconocene compounds, process for their preparation and their use as catalyst components in the polymerization of olefins
    Patent number: 6306791
    Abstract: Zirconocene compounds with two indenyl ligands linked in the 2 position by means of a two-carbon-atoms divalent bridging group can be suitably used as components of catalysts for the polymerization of olefins. Particularly it is possible to prepare, with high yields, ethylene (co)polymers having low molecular weights and narrow molecular weight distributions, without the need of using considerable amounts of molecular weight regulators, such as hydrogen.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: October 23, 2001
    Assignee: Basell Technology Company BV
    Inventors: Colin J. Schaverien, René Ernst, Jan-Dirk van Loon, Tiziano Dall′Occo
  • Bridged zirconocene compounds, process for their preparation and their use as catalyst components in the polymeriaztion of olefins
    Publication number: 20010014751
    Abstract: Zirconocene compounds with two indenyl ligands linked in the 2 position by means of a two-carbon-atoms divalent bridging group can be suitably used as components of catalysts for the polymerization of olefins. Particularly it is possible to prepare, with high yields, ethylene (co)polymers having low molecular weights and narrow molecular weight distributions, without the need of using considerable amounts of molecular weight regulators, such as hydrogen.
    Type: Application
    Filed: February 28, 2001
    Publication date: August 16, 2001
    Applicant: Montell Technology Company B.V.
    Inventors: Colin J. Schaverien, Rene Ernst, Jan-Dirk van Loon, Tiziano Dall'Occo
  • Bridged zirconocene compounds, process for their preparation and their use as catalyst components in the polymerization of olefins
    Patent number: 6232484
    Abstract: Zirconocene compounds with two indenyl ligands linked in the 2 position by means of a two-carbon-atoms divalent bridging group can be suitably used as components of catalysts for the polymerization of olefins. Particularly it is possible to prepare, with high yields, ethylene (co)polymers having low molecular weights and narrow molecular weight distributions, without the need of using considerable amounts of molecular weight regulators, such as hydrogen.
    Type: Grant
    Filed: March 9, 1999
    Date of Patent: May 15, 2001
    Assignee: Montell Technology B.V.
    Inventors: Colin J. Schaverien, Renè Ernst, Jan-Dirk van Loon, Tiziano Dall′occo