Patents by Inventor Alfred Alig

Alfred Alig 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).

  • Patent number: 8129556
    Abstract: The invention relates to a process for preparing organosilanes of the general formula I by reacting (haloorganyl)alkoxysilane of the formula II with hydrous alkali metal hydrogensulphide, sulphur and alkali metal carbonate in alcohol, wherein the molar (haloorganyl)alkoxysilane of the formula II to alkali metal hydrogensulphide ratio is between 1:0.4 and 1:0.75, and the molar alkali metal hydrogensulphide to alkali metal carbonate ratio is between 1:0.5 and 1:1.5.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: March 6, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Karsten Korth, Ingo Kiefer, Alfred Alig, Ulrich Deschler, Helmut Droege, Sefan Koenigstein, Stephanie Schwan
  • Publication number: 20100029971
    Abstract: The invention relates to a process for preparing organosilanes of the general formula I by reacting (haloorganyl)alkoxysilane of the formula II with hydrous alkali metal hydrogensulphide, sulphur and alkali metal carbonate in alcohol, wherein the molar (haloorganyl)alkoxysilane of the formula II to alkali metal hydrogensulphide ratio is between 1:0.4 and 1:0.75, and the molar alkali metal hydrogensulphide to alkali metal carbonate ratio is between 1:0.5 and 1:1.5.
    Type: Application
    Filed: July 24, 2009
    Publication date: February 4, 2010
    Inventors: Karsten Korth, Ingo Kiefer, Alfred Alig, Ulrich Deschler, Helmut Droege, Sefan Koenigstein, Stephanie Schwan
  • Patent number: 7518009
    Abstract: The present invention relates to a process for preparing mercaptoorganyl(alkoxysilanes), by hydrogenating bis(alkoxy-silylorganyl) polysulphides with hydrogen in the presence of at least one alcohol and a doped metal catalyst. The doped metal catalyst comprises at least one substance from the group consisting of iron, iron compound, nickel, nickel compound, palladium, palladium compound, osmium, osmium compound, ruthenium, ruthenium compound, rhodium, rhodium compound, iridium and iridium compound plus at least one doping component.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: April 14, 2009
    Assignee: Evonik Degussa GmbH
    Inventors: Karsten Korth, Dorit Wolf, Steffen Seebald, Philipp Albert, Reimund Pieter, Alfred Alig
  • Patent number: 7371881
    Abstract: A process for the preparation of an organosilicon compound of the formula (I) (R1R2R3SiR4)2Sx??(I) by reacting haloalkoxysilanes of the general formula (II) R1R2R3SiR4X??(II) with a dry polysulphide of the general formula (III) M2Sz??(III) and/or dry sulphide of the general formula IV M2S??(IV) and optionally sulphur in an organic solvent, the organic solvent being removed from the resulting suspension, the mixture containing the organosilicon compound of the general formula (I) and the solid MX being mixed with water containing at least one buffer, and the resulting phases being separated.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: May 13, 2008
    Assignee: Degussa AG
    Inventors: Albert Frings, Louis Janssens, Stefan Lotter, Ulrich Deschler, Alfred Alig
  • Publication number: 20070066841
    Abstract: A process for the preparation of an organosilicon compound of the formula (I) (R1R2R3SiR4)2Sx??(I) by reacting haloalkoxysilanes of the general formula (II) R1R2R3SiR4X??(II) with a dry polysulphide of the general formula (III) M2Sz??(III) and/or dry sulphide of the general formula IV M2S??(IV) and optionally sulphur in an organic solvent, the organic solvent being removed from the resulting suspension, the mixture containing the organosilicon compound of the general formula (I) and the solid MX being mixed with water containing at least one buffer, and the resulting phases being separated.
    Type: Application
    Filed: August 2, 2006
    Publication date: March 22, 2007
    Inventors: Albert Frings, Louis Janssens, Stefan Lotter, Ulrich Deschler, Alfred Alig
  • Publication number: 20060252952
    Abstract: The present invention relates to a process for preparing mercaptoorganyl(alkoxysilanes), by hydrogenating bis(alkoxy-silylorganyl) polysulphides with hydrogen in the presence of at least one alcohol and a doped metal catalyst. The doped metal catalyst comprises at least one substance from the group consisting of iron, iron compound, nickel, nickel compound, palladium, palladium compound, osmium, osmium compound, ruthenium, ruthenium compound, rhodium, rhodium compound, iridium and iridium compound plus at least one doping component.
    Type: Application
    Filed: May 2, 2006
    Publication date: November 9, 2006
    Applicant: Degussa AG
    Inventors: Karsten Korth, Dorit Wolf, Steffen Seebald, Philipp Albert, Reimund Pieter, Alfred Alig
  • Patent number: 7011806
    Abstract: A process and a device for producing anhydrous alkali sulfide, wherein an alkali sulfide solution, alkali sulfide suspension, alkali sulfide dispersion or alkali water of crystallization melt is dried by spray drying with inert drying gas loaded with water vapor.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: March 14, 2006
    Assignee: Degussa AG
    Inventors: Hans Christian Alt, Andreas Gölz, Alfred Alig
  • Publication number: 20060008411
    Abstract: A process and a device for producing anhydrous alkali sulfide, wherein hydrous alkali sulfide is dried by fluidized bed spray granulation.
    Type: Application
    Filed: August 8, 2005
    Publication date: January 12, 2006
    Inventors: Hans Alt, Andreas Golz, Alfred Alig
  • Publication number: 20040109818
    Abstract: A process and a device for producing anhydrous alkali sulfide, wherein an alkali sulfide solution, alkali sulfide suspension, alkali sulfide dispersion or alkali water of crystallization melt is dried by spray drying with inert drying gas loaded with water vapour.
    Type: Application
    Filed: November 14, 2003
    Publication date: June 10, 2004
    Inventors: Hans Christian Alt, Andreas Golz, Alfred Alig
  • Publication number: 20040109819
    Abstract: A process and a device for producing anhydrous alkali sulfide, wherein hydrous alkali sulfide is dried by fluidized bed spray granulation.
    Type: Application
    Filed: November 14, 2003
    Publication date: June 10, 2004
    Inventors: Hans Christian Alt, Andreas Golz, Alfred Alig
  • Patent number: 6582675
    Abstract: A method of preparing anhydrous sodium sulfide having an Na2S content of at least 98 wt %, by drying hydrous sodium sulfide having a water content of 35 to 45%, provided as a solid or in liquefied form, by intensively kneading and mixing hydrated sodium sulfide at an elevated temperature and pressure to thereby liquify said hydrated sodium sulfide and obtain the anhydrous sodium sulfide.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: June 24, 2003
    Assignee: Degussa AG
    Inventor: Alfred Alig
  • Patent number: 6423859
    Abstract: The invention relates to a process for the preparation of organosilylalkylpolysulfanes, of the general formula I (R1R2R3SiR4)2Sx (I) by reaction of organosilylalkylpolysulfanes of the general formula II (R1R2R3SiR4)2Sy (II) with an ionic sulfide of the general formula M+2S2− (III) and an organosilylalkyl halide of the general formula R1R2R3SiR4X (IV), the long-chain organosilylalkylpolysulfane of the general formula (II) and the organosilylalkyl halide of the general formula (IV) being initially introduced into the reaction vessel and the ionic sulfide of the general formula (III) being added to this solution in several portions.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: July 23, 2002
    Assignee: Degussa AG
    Inventors: Alfred Alig, Christoph Batz-Sohn, Ulrich Deschler, Rudolf Michel, Jörg Münzenberg, Raymund Sonnenschein, Werner Will, Gerd Rainhard Zezulka, Karl-Heinz Rützel
  • Publication number: 20020049347
    Abstract: The invention relates to a process for the preparation of organosilylalkylpolysulfanes, of the general formula I (R1R2R3SiR4)2SX (I) by reaction of organosilylalkylpolysulfanes of the general formula II (R1R2R3SiR4)2Sy (II) with an ionic sulfide of the general formula M+2S2− (III) and an organosilylalkyl halide of the general formula R1R2R3SiR4X (IV), the long-chain organosilylalkylpolysulfane of the general formula (II) and the organosilylalkyl halide of the general formula (IV) being initially introduced into the reaction vessel and the ionic sulfide of the general formula (III) being added to this solution in several portions.
    Type: Application
    Filed: July 13, 2001
    Publication date: April 25, 2002
    Inventors: Alfred Alig, Christoph Batz-Sohn, Ulrich Deschler, Rudolf Michel, Jorg Munzenberg, Raymund Sonnenschein, Werner Will, Gerd Rainhard Zezulka, Karl-Heinz Rutzeil
  • Publication number: 20010033824
    Abstract: A method for preparing anhydrous sodium sulfide having a content of at least 98 wt % Na2S, by drying hydrous sodium sulfide, having a water content of 35 to 45 wt %, wherein the hydrous sodium sulfide is provided as a solid or in liquified form, and is dried at an elevated temperature while being mixed and conveyed.
    Type: Application
    Filed: March 22, 2001
    Publication date: October 25, 2001
    Inventor: Alfred Alig