Patents by Inventor Sander Thoonen

Sander Thoonen 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 production of monoalkyltin trihalides
    Patent number: 6768017
    Abstract: The present invention is directed to a process for the production of monoalkylin trihalides of the formula RSnX3 wherein R-alkyl or cycloalkyl and X—Cl, Br or I involving a redistribution reaction between tetraorganotins, triorganotin halides or diorganotin halides and tin tetrahalides, said process comprising contacting tetra-(R4Sn), tri-(R3SnX) or diorganotin halides (R2SnX2) with SnX4 to afford said monoorganotin trihalides in the presence of at least one transition metal complex, said complex comprising at least one transition metal M, selected from Group VIII of the periodic Table of elements, at least one monodentate ligand or bidentate ligand, L, L′, or L″, and optionally one or more anions, X, of an organic or inorganic acid, as a catalyst or catalyst precursor.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: July 27, 2004
    Assignee: Atofina Vlissingen B.V.
    Inventors: Sander Thoonen, Gerard van Koten, Berth Jan Deelman
  • Process for the production of monoalkyltin thihalides
    Publication number: 20040077891
    Abstract: The present invention is directed to a process for the production of monoalkylin trihalides of the formula RSnX3 wherein R-alkyl or cycloalkyl and X—Cl, Br or I involving a redistribution reaction between tetraorganotins, triorganotin halides or diorganotin halides and tin tetrahalides, said process comprising contacting tetra-(R4Sn), tri-(R3SnX) or diorganotin halides (R2SnX2) with SnX4 to afford said monoorganotin trihalides in the presence of at least one transition metal complex, said complex comprising at least one transition metal M, selected from Group VIII of the periodic Table of elements, at least one monodentate ligand or bidentate ligand, L, L′, or L″, and optionally one or more anions, X, of an organic or inorganic acid, as a catalyst or catalyst precursor.
    Type: Application
    Filed: December 8, 2003
    Publication date: April 22, 2004
    Inventors: Sander Thoonen, Gerard van Koten, Berth Deelman