Patents by Inventor Henricus P. B. Duijghuisen

Henricus P. B. Duijghuisen 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: 6818583
    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 substituted succinates 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: February 5, 2001
    Date of Patent: November 16, 2004
    Assignee: Basell Poliolefine Italia S.p.A.
    Inventors: Giampiero Morini, Giulio Balbontin, Yuri. V Gulevich, Henricus P. B. Duijghuisen, Remco T. Kelder, Peter A.A . Klusener, Franciscus M. Korndorffer
  • Process for the preparation of di-alkyl compounds of group 2B metals
    Patent number: 5245065
    Abstract: Di-alkyl compounds of a Group 2b metal is reacted with an alkyl halide in the presence of magnesium to obtain the di-alkyl compound of the Group 2b metal and magnesium halide. Di-alkyl compound-containing products are obtainable from the resulting product mixture having a halogen content of less than 1 ppm, a silicon content of less than 1 ppm and a Group 3a metal content of less than 1 ppm.
    Type: Grant
    Filed: November 5, 1992
    Date of Patent: September 14, 1993
    Assignee: Shell Research Limited
    Inventors: Cornelis J. Smit, Gerardus P. M. Van Mier, Henricus P. B. Duijghuisen