Patents by Inventor Leendert Johannes Van Dop

Leendert Johannes Van Dop 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).

  • Compositions produced from plasticiser esters
    Patent number: 8987499
    Abstract: Compositions including a C6 to C13 phthalate ester containing titanium but in an amount less than 0.01 ppm by wt of titanium, prepared by titanium catalyzed esterification, and containing from 0.1 to 2.0 wt % of an antioxidant, are provided.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: March 24, 2015
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Brady Compton, John Lyford, IV, Nicolaas A. De Munk, Aad Gerrit Oskam, Allen D. Godwin, Leendert Johannes Van Dop
  • Plasticiser esters
    Patent number: 8829227
    Abstract: Esters produced by the catalyzed reaction of alcohols and acids or anhydrides are neutralized by treatment with an aqueous alkaline alkali metal salt solution in an amount that provides less than a stoichiometric amount of alkali metal salt in relation to the acidity of the crude ester and the amount of water present during the treatment is from 0.8 to 1.4 wt % of water based on the weight of crude ester. When using titanium as the esterification catalyst, the ester resulting from this process contains less than 0.01 ppm by weight of titanium residue, so that it is storage stable when stored in the presence of an antioxidant.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: September 9, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Brady Compton, John Lyford, IV, Nicolaas Anthony De Munck, Aad Gerrit Oskam, Allen David Godwin, Leendert Johannes Van Dop
  • Compositions Produced From Plasticiser Esters
    Publication number: 20110147650
    Abstract: Compositions including a C6 to C13 phthalate ester containing titanium but in an amount less than 0.01 ppm by wt of titanium, prepared by titanium catalysed esterification, and containing from 0.1 to 2.0 wt % of an antioxidant, are provided.
    Type: Application
    Filed: February 28, 2011
    Publication date: June 23, 2011
    Inventors: Brady Compton, John Lyford, IV, Nicolaas A. De Munk, Aad Gerrit Oskam, Allen D. Godwin, Leendert Johannes Van Dop
  • Plasticiser esters
    Patent number: 7919649
    Abstract: Esters produced by the catalyzed reaction of alcohols and acids or anhydrides are neutralized by treatment with an aqueous alkaline alkali metal salt solution in an amount that provides less than a stoichiometric amount of alkali metal salt in relation to the acidity of the crude ester and the amount of water present during the treatment is from 0.7 to 1.4 wt % of water based on the weight of crude ester. When using titanium as the esterification catalyst, the ester resulting from this process contains less than 0.01 ppm by weight of titanium residue, so that it is storage stable when stored in the presence of an antioxidant.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: April 5, 2011
    Assignee: ExxonMobile Chemical Patents Inc.
    Inventors: Brady Compton, John Lyford, IV, Nicolaas A. De Munck, Aad Gerrit Oskam, Allen D. Godwin, Leendert Johannes Van Dop
  • Plasticiser Esters
    Publication number: 20080275267
    Abstract: Esters produced by the catalyzed reaction of alcohols and acids or anhydrides are neutralized by treatment with an aqueous alkaline alkali metal salt solution in an amount that provides less than a stoichiometric amount of alkali metal salt in relation to the acidity of the crude ester and the amount of water present during the treatment is from 0.8 to 1.4 wt % of water based on the weight of crude ester. When using titanium as the esterification catalyst, the ester resulting from this process contains less than 0.01 ppm by weight of titanium residue, so that it is storage stable when stored in the presence of an antioxidant.
    Type: Application
    Filed: May 24, 2006
    Publication date: November 6, 2008
    Inventors: Brady Compton, John Lyford, Nicolaas Anthony De Munck, Aad Gerrit Oskam, Allen David Godwin, Leendert Johannes Van Dop