Patents by Inventor Maarten Boele

Maarten Boele 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 monoalkyltin trihalides and dialkyltin dihalides
    Patent number: 7592472
    Abstract: The present invention relates to a process for the production of monoalkyltin trihalides of the formula RSnHal3, in which R=alkyl or cycloalkyl and Hal=Cl. Br or I. Said process comprises contacting the corresponding alkene or cycloalkene, stannous halide SnHal2, hydrogen halide HHal and optionally Sn metal, in the presence of at least one transition metal-based catalyst, thereafter isolating the monoalkyltin trihalides from the medium. The present invention also relates to a process for the production of dialkyltin dihalides of the formula R2SnHal2 from monoalkyltin trihalides of the formula RsnHal3?. in which R=alkyl or cycloakyl and Hal=Cl, Br or I. Said process comprises contacting monoalkyltin trihalides RsnHal3 and Sn metal, optionally thereafter isolating the dialkyltin dihalides R2SnHal2 from the medium.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: September 22, 2009
    Assignee: Arkema Vlissingen
    Inventors: Maarten Boele, Berth-Jan Deelman, Gerard Van Koten, Erika Monika Wagner
  • Process for the Preparation of Monoalkyltin Trihalides and Dialkyltin Dihalides
    Publication number: 20090131704
    Abstract: The present invention relates to a process for the production of monoalkyltin trihalides of the formula RSnHal3, in which R=alkyl or cycloalkyl and Hal=Cl. Br or I. Said process comprises contacting the corresponding alkene or cycioalkene, stannous halide SnHal2, hydrogen halide HHal and optionally Sn metal, in the presence of at least one transition metal-based catalyst, thereafter isolating the monoalkyltin trihalides from the medium. The present invention also relates to a process for the production of dialkyltin dihalides of the formula R2SnHal2 from monoalkyltin trihalides of the formula RsnHal3?. in which R=alkyl or cycloakyl and Hal=Cl, Br or I. Said process comprises contacting monoalkyltin trihalides RsnHal3 and Sn metal, optionally thereafter isolating the dialkyltin dihalides R2SnHal2 from the medium.
    Type: Application
    Filed: July 11, 2006
    Publication date: May 21, 2009
    Applicant: Arkema Vlissingen
    Inventors: Maarten Boele, Berth-Jan Deelman, Gerard Van Koten, Erika Monika Wagner