Patents by Inventor Peter Vogtel

Peter Vogtel 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).

  • Catalysts which are based on organic-inorganic hybrid materials containing noble metals and titanium and which are used for selectively oxidizing hydrocarbons
    Patent number: 6995113
    Abstract: The present invention relates to noble metal-containing catalysts which are composed of at least one organic/inorganic hybrid material which is composed of at least one titanium component and at least one Si—H group. The catalysts of the present invention have increased activity compared to known catalysts.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: February 7, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Markus Weisbeck, Gerhard Wegener, Georg Wiessmeier, Peter Vogtel
  • Integrated method for producing epoxides from olefins
    Patent number: 6504040
    Abstract: The invention relates to an integrated process for the preparation of epoxidised olefins. In the first stage, dilute hydrogen peroxide solutions are prepared from the elements hydrogen and oxygen and are reacted in a subsequent liquid-phase epoxidation with olefin in the presence of titanium silicalite to form epoxidised olefins, and the solvents are returned to the H2O2 process again.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: January 7, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Vogtel, Ernst-Ulrich Dorf, Gerhard Wegener, Markus Weisbeck
  • Process for the recovery of adipic acid
    Patent number: 5264624
    Abstract: This invention relates to a process for the recovery of adipic acid from mother liquors collected during commercial production of adipic acid, wherein said mother liquors contain from 52 to 60% by weight of nitric acid calculated as HNO.sub.3, not taking into account the organic constituents, from 2 to 6% by weight of succinic acid, from 4 to 9% by weight of glutaric acid, and from 5 to 10% by weight of adipic acid, by selective crystallization of the adipic acid dissolved in said mother liquors by(a) adding an aqueous adipic acid solution having an adipic acid content of from 0.5 to 6% by weight to said mother liquor in the temperature range of from 30.degree. to 60.degree. C. in such a quantity that the concentration of nitric acid in the mixture is reduced to 35 to 50% by weight;(b) cooling the mixture by at least 5 degrees Celsius within a period of from 0.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: November 23, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Vogtel, Georg Steinhoff
  • Process for the production of elastic, open-celled flexible polyurethane foams having increased compression hardness
    Patent number: 4782099
    Abstract: Flexible polyurethane foams having increased compression hardness are produced by reacting an organic polyisocyanate with a mixture of polyols in the presence of a blowing agent and optionally known additives such as catalysts, emulsifiers, etc. The mixture of polyols is (1) 75-95 wt % polyether polyol with terminal OH groups having a functionality of from 2 to 4 and an OH number of from 25 to 60 and (2) 5-25 wt % polyether polyol having a functionality of at least six and an OH number of from 150 to 200 which is the reaction product of an alcohol having a functionality of at least six and propylene oxide which has been modified to contain 5-50 wt % terminal ethylene oxide groups. These foams are useful in furniture applications.
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: November 1, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Dietrich, Hans-Walter Illger, Peter Vogtel
  • Process for the production of highly elastic foams containing urethane groups and foams obtainable by this process
    Patent number: 4546116
    Abstract: The present invention relates to a process for the production of foams containing urethane groups by reacting polyether polyols with polyisocyanates in the presence of water and in the presence of an alkaline catalyst, a compound containing a labile halogen atom and, optionally, a tertiary nitrogen containing chain extender.The present invention also relates to the foams obtainable by this process.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: October 8, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hanns P. Muller, Hans Hettel, Kuno Wagner, Peter Vogtel