Patents by Inventor Bart J. Ruisch

Bart J. Ruisch 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).

  • Process for the preparation of ethylene polymers
    Patent number: 7202315
    Abstract: A process for polymerizing ethylene comprising contacting under polymerization condition ethylene and optionally one or more olefins with a catalyst system obtainable by contacting: a bis amido compound of formula (I) wherein Y is Si, Ge and Sn; X is hydrogen, halogen or an hydrocarbon radical; R1, R2, R3, R4, R5 and R6, are hydrocarbon radical; Q is a neutral Lewis base; and m is 0–2; one or more boron activating cocatalysts and one or more aluminum alkyls or alumoxanes.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: April 10, 2007
    Assignee: Basell Polyolefine GmbH
    Inventors: Tiziano Dall'Occo, Andrew D. Horton, Bart J. Ruisch, Klaas L. von Hebel, Arie van Zon, Henri H. Deuling, Eric J. M. de Boer
  • Process for the preparation of ethylene polymers
    Publication number: 20040097668
    Abstract: A process for polymerizing ethylene comprising contacting under polymerization condition ethylene and optionally one or more olefins with a catalyst system obtainable by contacting: a bis amido compound of formula (I) wherein Y is Si, Ge and Sn; X is hydrogen, halogen or an hydrocarbon radical; R1, R2, R3, R4, R5 and R6, are hydrocarbon radical; Q is a neutral Lewis base; and m is 0-2; one or more boron activating cocatalysts and one or more aluminum alkyls or alumoxanes.
    Type: Application
    Filed: March 24, 2003
    Publication date: May 20, 2004
    Applicants: SANTAN PHARMACEUTICAL CO., LTD., ASAHI GLASS COMPANY., LTD.
    Inventors: Tiziano Dall'Occo, Andrew D. Horton, Bart J. Ruisch, Klaas L. Hebel, Arie van Zon, Henri H. Deuling, Eric J. M. de Boer
  • Solid alpha-olefin polymerization catalyst compounds
    Patent number: 5132379
    Abstract: A process for preparing a solid catalyst component which comprises halogenating a magnesium compound in the formula MgRR.sup.1.nCO.sub.2 in which R and R.sup.1 are the same or different alkoxy or phenoxy groups and n is a number of from 0 to 2 with a halide of tetravalent titanium in the presence of dialkylester of a dihydric aromatic carboxylic acid and an inert hydrocarbon diluent by reacting at a temperature of from 120.degree. to 136.degree. C. and recovering the solid reaction product from the reaction mixture.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: July 21, 1992
    Assignee: Shell Research Limited
    Inventors: John C. Chadwick, Bart J. Ruisch
  • Solid alpha-olefin polymerization catalyst components
    Patent number: 5061666
    Abstract: A process for preparing a solid catalyst component which comprises halogenating a magnesium compound in the formula MgRR.sup.1.nCO.sub.2 l in which R and R.sup.1 are the same or different alkoxy or phenoxy groups and n is a number of from 0 to 2 with a halide of tetravalent titanium in the presence of dialkylester of a dihydric aromatic carboxylic acid and an inert hydrocarbon diluent by reacting at a temperature of from 120.degree. to 136.degree. C. and recovering the solid reaction product from the reaction mixture.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: October 29, 1991
    Assignee: Shell Research Limited
    Inventors: John C. Chadwick, Bart J. Ruisch