Patents by Inventor Remco Kelder

Remco Kelder 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
  • Propylene polymers
    Publication number: 20050032633
    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: Application
    Filed: August 31, 2004
    Publication date: February 10, 2005
    Applicant: Basell Poliolefine Italia S.p.A.
    Inventors: Giampiero Morini, Giulio Balbontin, Yuri.v Gulevich, Henricus Duijghuisen, Remco Kelder, Peter Klusener, Franciscus Korndorffer