Patents by Inventor Tiberiu Ladislau Simandan

Tiberiu Ladislau Simandan 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).

  • Catalytic process for the preparation of thiocarboxylate silane
    Patent number: 9206203
    Abstract: The invention is directed to a process for the preparation of thiocarboxylate silane comprising reacting an aqueous solution of a salt of a thiocarboxylic acid with a haloalkyl silane in the presence of a solid inorganic oxide-supported phase transfer catalyst. The invention is also directed to a process for the preparation of an aqueous solution of a salt of a thiocarboxylic acid which comprises reacting an aqueous solution of a sulfide and/or hydrosulfide with an acid halide in the presence of a said solid catalyst.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: December 8, 2015
    Assignee: Momentive Performance Materials Inc.
    Inventors: Tiberiu Ladislau Simandan, Ilaria Vecchi, Holger Jurgen Glatzer
  • Continuous process for the preparation of thiocarboxylate silane
    Patent number: 9193742
    Abstract: The invention is directed to a process for the preparation of thiocarboxylate silane comprising reacting an aqueous solution of a salt of a thiocarboxylic acid with a haloalkylalkoxysilane in the presence of a solid supported catalyst. The invention is also directed to a process for the preparation of an aqueous solution of a salt of a thiocarboxylic acid which comprises reacting an aqueous solution of a sulfide and/or hydrosulfide with a carboxylic acid halide and/or acid anhydride.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: November 24, 2015
    Assignee: Momentive Performance Materials Inc.
    Inventors: Tiberiu Ladislau Simandan, Andrea Trotto, Ilaria Vecchi, Ottavio Ursitti
  • CONTINUOUS PROCESS FOR THE PREPARATION OF THIOCARBOXYLATE SILANE
    Publication number: 20150080595
    Abstract: The invention is directed to a process for the preparation of thiocarboxylate silane comprising reacting an aqueous solution of a salt of a thiocarboxylic acid with a haloalkylalkoxysilane in the presence of a solid supported catalyst. The invention is also directed to a process for the preparation of an aqueous solution of a salt of a thiocarboxylic acid which comprises reacting an aqueous solution of a sulfide and/or hydrosulfide with a carboxylic acid halide and/or acid anhydride.
    Type: Application
    Filed: July 9, 2014
    Publication date: March 19, 2015
    Inventors: Tiberiu Ladislau Simandan, Andrea Trotto, Ilaria Vecchi, Ottavio Ursitti
  • CATALYTIC PROCESS FOR THE PREPARATION OF THIOCARBOXYLATE SILANE
    Publication number: 20140296553
    Abstract: The invention is directed to a process for the preparation of thiocarboxylate silane comprising reacting an aqueous solution of a salt of a thiocarboxylic acid with a haloalkyl silane in the presence of a solid inorganic oxide-supported phase transfer catalyst. The invention is also directed to a process for the preparation of an aqueous solution of a salt of a thiocarboxylic acid which comprises reacting an aqueous solution of a sulfide and/or hydrosulfide with an acid halide in the presence of a said solid catalyst.
    Type: Application
    Filed: March 26, 2014
    Publication date: October 2, 2014
    Applicant: Momentive Performance Materials Inc.
    Inventors: Tiberiu Ladislau SIMANDAN, Ilaria VECCHI, Holger Jurgen GLATZER
  • Aqueous catalytic process for the preparation of thiocarboxylate silane
    Patent number: 7528273
    Abstract: An aqueous process is described in which thiocarboxylate silane is produced from haloalkyl silane by reaction of the haloalkyl silane with an aqueous solution of thiocarboxylate salt in the presence of a catalytically effective amount of alkylguanidinium salt.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: May 5, 2009
    Assignee: Momentive Performance Materials Inc.
    Inventors: Tiberiu Ladislau Simandan, Thomas Link Guggenheim
  • Removal of dissolved silicates from alcohol-silicon direct synthesis solvents
    Patent number: 6166237
    Abstract: Dissolved silanes, silicones and silicates from solvents used in the slurry phase Direct Synthesis of alkoxysilanes are removed by adding a compatabilizing agent and water to generate filterable precipitates and reusable solvent. The solvents are thereby remediated and made suitable for reuse in Direct Synthesis processes. Foaming is reduced with the remediated solvent and silicon conversion rates are higher. The precipitates are easily filtered and retain negligible quantities of solvent.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: December 26, 2000
    Assignee: Crompton Corporation
    Inventors: Tiberiu Ladislau Simandan, Frank D. Mendicino