Patents by Inventor Gerard Du Cauze de Nazelle

Gerard Du Cauze de Nazelle 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 preparing alkylene oxide
    Publication number: 20050192447
    Abstract: The invention relates to a process for the preparation of alkylene oxide involving: (a) oxidizing an organic compound to obtain a hydroperoxide containing stream, (b) washing the hydroperoxide stream with a basic aqueous solution, (c) washing the hydroperoxide stream of step (b) with water, (d) optionally subjecting the hydroperoxide stream obtained in step (c) to distillation, (e) contacting at least part of the hydroperoxide stream obtained in step (c) and/or (d) with alkene and a heterogeneous catalyst to obtain a reaction mixture containing a hydroxyl containing compound and alkylene oxide, and (f) separating at least part of the alkylene oxide from the reaction mixture, in which process the alkene added in step (e) has a temperature of from 60 to 120° C. while the temperature of the hydroperoxide stream contacted with the alkene is similar to the temperature of the hydroperoxide stream obtained in step (c) and/or (d).
    Type: Application
    Filed: February 3, 2005
    Publication date: September 1, 2005
    Inventor: Gerard Du Cauze De Nazelle
  • Process for preparation of polyether polyols
    Publication number: 20040220353
    Abstract: The present invention relates to a process for the preparation of polyether polyols having an average molecular weight of at least 2000, in which the process involves (i) reacting an initiator with a crude alkylene oxide stream in the presence of a catalyst to obtain an intermediate product having an average molecular weight of from 200 to 1100; and (ii) reacting the intermediate product further with one or more alkylene oxides to yield polyether polyols.
    Type: Application
    Filed: February 26, 2004
    Publication date: November 4, 2004
    Inventors: Johannes Gerhardus Joseph Beckers, Gerard Du Cauze De Nazelle, Gerardus Wilhelmus Henricus Ingenbleek, Parminder Singh Sangha
  • Process for preparing organic hydroperoxides
    Patent number: 6700024
    Abstract: A process for preparing organic hydroperoxides, which process comprises: (a) oxidation of an organic compound to obtain reaction product containing organic hydroperoxide, (b) contacting at least part of the organic hydroperoxide containing reaction product with a basic aqueous solution, (c) separating hydrocarbonaceous phase containing organic hydroperoxide from aqueous phase, (d) contacting at least part of the separated hydrocarbonaceous phase containing organic hydroperoxide with an aqueous solution comprising wastewater, and (e) separating the hydrocarbonaceous phase containing organic hydroperoxide from the aqueous phase. The invention further relates to a process for preparing an oxirane compounds with the help of this process, and a to a process for preparing an alkenyl aryl with the help of this process.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: March 2, 2004
    Assignee: Shell Oil Company
    Inventors: Gerard Du Cauze de Nazelle, Wan Shi Foong, Tjeerd Willem Garritsen, Raymond Lawrence June, Mohammad Azmi Bin Othman, Eduardus Petrus Simon Schouten
  • Process for preparing organic hydroperoxides
    Publication number: 20030125574
    Abstract: A process for preparing organic hydroperoxides, which process comprises:
    Type: Application
    Filed: September 19, 2002
    Publication date: July 3, 2003
    Inventors: Gerard Du Cauze De Nazelle, Wan Shi Foong, Tjeerd Willem Garritsen, Raymond Lawrence June, Mohammed Azmi Bin Othman, Eduardus Petrus Simon Schouten