Patents by Inventor Rene Allerdisse

Rene Allerdisse 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).

  • Precipitated silicas for storage-stable RTV-1 silicone rubber formulations without stabilizer
    Patent number: 9738535
    Abstract: A precipitated silica having an SiOHisolated absorbance ratio of greater than or equal to 1.5, a silanol group density of 1 to 3.0 SiOH/nm2, a modified tapped density of 1 to 50 g/l, and a pH of 3-5, when measured as a aqueous suspension of 5.00 g of the precipitated silica in 100 ml. of deionized water allows preparation of storage-stable RTV-1 silicone rubber formulations without stabilizer. A process for preparing the precipitated silica and its use in thickening sealants is provided.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: August 22, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Panz, Helga Obladen, Karl Meier, Markus Ruf, Rene Allerdisse, Dieter Kuhn, Aziz El Moussaoui, Mario Scholz, Michael Kempf
  • Hydrophilic silica for sealants
    Patent number: 8617504
    Abstract: Hydrophilic precipitated silicas which combine a particularly low initial moisture content with low moisture absorption over time, a low tapped density and a low silanol group density, have the following physicochemical parameters: equilibrium moisture content (at 70% relative humidity/20° C.) of 0.5%-5.0% by weight, based on the weight of the hydrophilic precipitated silica, BET surface area of 50-250 m2/g, CTAB surface area of 50-250 m2/g, and DBP (anhydrous) of 200-350 g/100 g.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: December 31, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Panz, Helga Obladen, Rene Allerdisse, Karl Meier, Markus Ruf, Michael Kempf, Mario Scholz, Dieter Kuhn
  • Hydrophobic precipitated silica for defoamer formulations
    Patent number: 8614256
    Abstract: A hydrophobic precipitated silica having a BET of less than 110 m2/g, a CTAB of less than 150 m2/g, a BET/CTAB ratio of less than 3, a carbon content of greater than 3.1%, a pH of 9.7 to 10.5, a DBP of less than 230 g/(100 g), and a methanol wettability of more than 50%. The hydrophobic precipitated silica is used in compositions including defoamers, silicone rubber and HTV crosslinkable silicone rubber compositions. The hydrophobic precipitated silica is also useful as a flow assistant and carrier or anti-blocking agent.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: December 24, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Panz, Rene Allerdisse, Helga Obladen, Mario Loebbus, Anja Lukas, Roland Bergmann, Karl Meier
  • Hydrophilic precipitated silica for defoamer formulations
    Patent number: 8007751
    Abstract: Precipitated silicas with a high pH and their use in applications as defoamers having optimum silanol group density and a process for preparing precipitated silicas and to their use, particularly in defoamer formulations.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: August 30, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Panz, Rene Allerdisse, Helga Obladen, Mario Loebbus, Anja Lukas, Roland Bergmann, Karl Meier
  • HYDROPHOBIC PRECIPITATED SILICA FOR DEFOAMER FORMULATIONS
    Publication number: 20110172343
    Abstract: Hydrophobic precipitated silicas with a high pH and low silanol group density, a process for preparing them and their use, particularly in deformer formulations.
    Type: Application
    Filed: February 1, 2011
    Publication date: July 14, 2011
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Christian PANZ, Rene Allerdisse, Helga Obladen, Mario Loebbus, Anja Lukas, Roland Bergmann, Karl Meier
  • Precipitated silicas having special surface properties
    Patent number: 7767180
    Abstract: Precipitated silicas having an SiOHisolated absorbance ratio of greater than or equal to 1, may be used as reinforcers and thickeners for sealants.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: August 3, 2010
    Assignee: Degussa GmbH
    Inventors: Christian Panz, Helga Obladen, Rene Allerdisse, Karl Meier, Markus Ruf, Michael Kempf, Mario Scholz, Dieter Kuhn
  • PRECIPITATED SILICAS FOR STORAGE-STABLE RTV-1 SILICONE RUBBER FORMULATIONS WITHOUT STABILIZER
    Publication number: 20090137732
    Abstract: A precipitated silica having an SiOHisolated absorbance ratio of greater than or equal to 1.5, a silanol group density of 1 to 3.0 SiOH/nm2, a modified tapped density of 1 to 50 g/l, and a pH of 3-5, when measured as a aqueous suspension of 5.00 g of the precipitated silica in 100 ml. of deionized water allows preparation of storage-stable RTV-1 silicone rubber formulations without stabilizer. A process for preparing the precipitated silica and its use in thickening sealants is provided.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 28, 2009
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Christian Panz, Helga Obladen, Karl Meier, Markus Ruf, Rene Allerdisse, Dieter Kuhn, Aziz El Moussaoui, Mario Scholz, Michael Kempf
  • HYDROPHILIC SILICA FOR SEALANTS
    Publication number: 20070299203
    Abstract: Hydrophilic precipitated silicas which combine a particularly low initial moisture content with low moisture absorption over time, a low tapped density and a low silanol group density, have the following physicochemical parameters: equilibrium moisture content (at 70% relative humidity/20° C.) of 0.5%-5.0% by weight, based on the weight of the hydrophilic precipitated silica, BET surface area of 50-250 m2/g, CTAB surface area of 50-250 m2/g, and DBP (anhydrous) of 200-350 g/100 g.
    Type: Application
    Filed: May 29, 2007
    Publication date: December 27, 2007
    Applicant: DEGUSSA GmbH
    Inventors: Christian Panz, Helga Obladen, Rene Allerdisse, Karl Meier, Markus Ruf, Michael Kempf, Mario Scholz, Dieter Kuhn
  • PRECIPITATED SILICAS HAVING SPECIAL SURFACE PROPERTIES
    Publication number: 20070286788
    Abstract: Precipitated silicas having an SiOHisolated absorbance ratio of greater than or equal to 1, may be used as reinforcers and thickeners for sealants.
    Type: Application
    Filed: May 29, 2007
    Publication date: December 13, 2007
    Applicant: DEGUSSA GmbH
    Inventors: Christian PANZ, Helga OBLADEN, Rene ALLERDISSE, Karl MEIER, Markus RUF, Michael KEMPF, Mario SCHOLZ, Dieter KUHN
  • Hydrophilic precipitated silica for defoamer formulations
    Publication number: 20050191228
    Abstract: Precipitated silicas with a high pH and their use in applications as defoamers having optimum silanol group density and a process for preparing precipitated silicas and to their use, particularly in defoamer formulations.
    Type: Application
    Filed: January 19, 2005
    Publication date: September 1, 2005
    Applicant: Degussa AG
    Inventors: Christian Panz, Rene Allerdisse, Helga Obladen, Mario Loebbus, Anja Lukas, Roland Bergmann, Karl Meier
  • Hydrophobic precipitated silica for defoamer formulations
    Publication number: 20050192395
    Abstract: Hydrophobic precipitated silicas with a high pH and low silanol group density, a process for preparing them and their use, particularly in deformer formulations.
    Type: Application
    Filed: January 19, 2005
    Publication date: September 1, 2005
    Applicant: Degussa AG
    Inventors: Christian Panz, Rene Allerdisse, Helga Obladen, Mario Loebbus, Anja Lukas, Roland Bergmann, Karl Meier