Patents by Inventor Marinus Catharinus Tammer

Marinus Catharinus Tammer 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).

  • Polymerization process involving diacyl peroxides
    Patent number: 7087693
    Abstract: The invention relates to a process to make and use specific diacyl peroxides in polymerization reactions. The peroxides are produced and used in a polymerization process within a short timeframe in order to overcome stability issues associated with them.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: August 8, 2006
    Assignee: Akzo Nobel N.V.
    Inventors: Marinus Catharinus Tammer, Johannes Jacobus Theodorus De Jong, Johannes Willibrordus Antonius Overkamp
  • Process for preparing peroxides using mixed anhydrides
    Publication number: 20040049070
    Abstract: The invention relates to a process for the preparation of a peracid, perester or diacylperoxide and is characterized in that a mixed anhydride of formula R1[C(O)OC(O)OR2]n or [R3C(O)OC(O)O]pR4 is contacted with a hydroperoxide of formula R5[OOH]m in the presence of a base, wherein R1 represents a mono-, di-, tri- or tetravalent C1-C19 hydrocarbon group, optionally containing one or more hetero atoms, n is 1-4, R2 represents a C1-C20 hydrocarbon group, optionally containing one or more hetero atoms, R3 represents a C1-C19 hydrocarbon group, optionally containing one or more hetero atoms, R4 represents a di-, tri- or tetravalent C1-C20 hydrocarbon group, optionally containing one or more hetero atoms, p is 2-4, R5 represents hydrogen or a mono- or divalent C3-C18 tertiary alkyl or C2-C20 acyl group, in which the tertiary alkyl or acyl group may optionally contain one or more hetero atoms, m is 1 or 2, and if R5 represents hydrogen, m is 1, provided that if the hydroperoxide is an &
    Type: Application
    Filed: July 9, 2003
    Publication date: March 11, 2004
    Inventors: Johannes Willibrordus A. Overkamp, Marinus Catharinus Tammer, Bernard De Vries, Anna Gerdine Van de Bovenkamp-Bouwman
  • (Stabilised) peroxide compositions phlegmatised with a specific unsaturated phlegmatising agent
    Publication number: 20040024236
    Abstract: The invention relates to peroxide compositions that are phlegmatised with a specific unsaturated phlegmatising agent. The phlegmatised peroxide compositions are optionally stabilised. In addition, the invention relates to the safe handling of these peroxide compositions and the use of these peroxide compositions in polymerisation processes.
    Type: Application
    Filed: June 17, 2003
    Publication date: February 5, 2004
    Inventors: Koen Antoon Kornelis Vanduffel, Marinus Catharinus Tammer, Petrus Paulus Waanders, Andreas Petrus Van Swieten
  • Process for preparing peroxides using mixed anhydrides
    Patent number: 6610880
    Abstract: The invention relates to a process for the preparation of a peracid, perester or diacylperoxide and is characterized in that a mixed anhydride of formula R1[C(O)OC(O)OR2]n or [R3C(O)OC(O)O]pR4 is contacted with a hydroperoxide of formula R5[OOH]m in the presence of a base, wherein R1 represents a mono-, di-, tri- or tetravalent C1-C19 hydrocarbon group, optionally containing one or more hetero atoms, n is 1-4, R2 represents a C1-C20 hydrocarbon group, optionally containing one or more hetero atoms, R3 represents a C1-C19 hydrocarbon group, optionally containing one or more hetero atoms, R4 represents a di-, tri- or tetravalent C1-C20 hydrocarbon group, optionally containing one or more hetero atoms, p is 2-4, R5 represents hydrogen or a mono- or divalent C3-C18 tertiary alkyl or C2-C20 acyl group, in which the tertiary alkyl or acyl group may optionally contain one or more hetero atoms, m is 1 or 2, and if R5 represents hydrogen, m is 1, provided that if the hydroperoxide is an &
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: August 26, 2003
    Assignee: Akzo Nobel NV
    Inventors: Johannes Willibrordus A. Overkamp, Marinus Catharinus Tammer, Bernard De Vries, Anna Gerdine Van De Bovenkamp-Bouwman