Patents by Inventor Jeffrey Bolton

Jeffrey Bolton 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).

  • Method for dividing fluid streams
    Patent number: 10143987
    Abstract: One or more fluid streams are uniformly divided into two or more partial fluid streams in chemical apparatuses in a manner such that there is a reduced tendency to form deposits. Division of such stream(s) is achieved by using a distributor device that includes at least one plate having two or more openings which openings are rounded or chamfered on at least one side.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: December 4, 2018
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Berthold Keggenhoff, Jeffrey Bolton, Friedhelm Steffens, Marc Seekamp, Gerhard Ruffert, Jürgen Kern, Thomas Runowski
  • Process for the preparation of nitrobenzene by adiabatic nitration
    Patent number: 7781624
    Abstract: This invention relates to a process for the continuous preparation of nitrobenzene. This process comprises the adiabatic nitration of benzene with a mixture of sulfuric acid and nitric acid, in which the sum of the concentrations in the reaction zone of the metal ions which form sparingly soluble metal sulfates is less than 900 mg/l, based on the volume of the aqueous phase which contains sulfuric acid.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: August 24, 2010
    Assignee: Bayer MaterialScience AG
    Inventors: Andreas Rausch, Thomas Knauf, Jeffrey Bolton, Alexandre Racoes
  • METHOD FOR DIVIDING FLUID STREAMS
    Publication number: 20100071770
    Abstract: One or more fluid streams are uniformly divided into two or more partial fluid streams in chemical apparatuses in a manner such that there is a reduced tendency to form deposits. Division of such stream(s) is achieved by using a distributor device that includes at least one plate having two or more openings which openings are rounded or chamfered on at least one side.
    Type: Application
    Filed: August 20, 2009
    Publication date: March 25, 2010
    Inventors: Berthold Keggenhoff, Jeffrey Bolton, Friedhelm Steffens, Marc Seekamp, Gerhard Ruffert, Jürgen Kern, Thomas Runowski
  • Method and device for determining the isomer composition in isocyanate production processes
    Patent number: 7662634
    Abstract: The invention relates to a method for determining the isomer composition in an isocyanate isomer mixture, wherein a spectrum of the isomer mixture is recorded and the spectrum is entered into a chemometric calibration model.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: February 16, 2010
    Assignee: Bayer MaterialScience AG
    Inventors: Jochen Mahrenholtz, Andrea Wimschneider, Hans-Georg Pirkl, Heinz-Herbert Müller, Stefan Dresely, Jeffrey Bolton, Martin Schiffhauer, Udo Wolf, Johannes Schweer, Martin Gerlach
  • Process for the preparation of nitrobenzene by adiabatic nitration
    Publication number: 20090187051
    Abstract: This invention relates to a process for the continuous preparation of nitrobenzene. This process comprises the adiabatic nitration of benzene with a mixture of sulfuric acid and nitric acid, in which the sum of the concentrations in the reaction zone of the metal ions which form sparingly soluble metal sulfates is less than 900 mg/l, based on the volume of the aqueous phase which contains sulfuric acid.
    Type: Application
    Filed: December 8, 2008
    Publication date: July 23, 2009
    Inventors: Andreas Rausch, Thomas Knauf, Jeffrey Bolton, Alexandre Racoes
  • Process for preparing diamines and polyamines from the diphenylmethane series
    Patent number: 7528283
    Abstract: The invention provides an improved process for preparing diamines and polyamines from the diphenylmethane series by reacting aniline and formaldehyde in the presence of an acid catalyst, the improvement involving the aniline containing less than about 3 wt. % of diamines and polyamines from the diphenylmethane series, based on the weight of the aniline.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: May 5, 2009
    Assignee: Bayer MeterialScience AG
    Inventors: Fritz Pohl, Jeffrey Bolton, Richard Adamson, Heinz-Herbert Muller, Rudolf Uchdorf
  • Process for the production of very pure 2,4?-methylenediphenyl diisocyanate
    Patent number: 7495124
    Abstract: The present invention relates to a process for the production of MDI fractions containing 2,4?-MDI, and in which the 2,2?-MDI component from the MDA production is largely removed from the isomer mixture. Highly reactive monomeric MDI products can be produced in this way. These MDI products are characterised in their processing by significantly reduced emissions of MDI monomers.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: February 24, 2009
    Assignee: Bayer MaterialScience AG
    Inventors: Hans-Georg Pirkl, Jeffrey Bolton, Walter Meckel, Ulrich Wolf, Matthias Wintermantel, Jochen Mahrenholtz
  • Process for the production of light-colored isocyanates
    Patent number: 7368595
    Abstract: The invention relates to an improved process for the production of isocyanates by the reaction of an amine or a mixture of two or more amines with phosgene, the improvement involving the phosgene containing less than about 100 ppm of sulfur in elemental or bound form. The inventive process yields light-colored isocyanates that are suitable for the production of polyurethanes or their precursors (e.g. prepolymers) without the treatment processes heretofore required.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: May 6, 2008
    Assignee: Bayer MaterialScience AG
    Inventors: Stefan Wershofen, Torsten Hagen, Christian Steffens, Jeffrey Bolton
  • Process for preparing diamines and polyamines from the diphenylmethane series
    Publication number: 20070179316
    Abstract: The invention provides an improved process for preparing diamines and polyamines from the diphenylmethane series by reacting aniline and formaldehyde in the presence of an acid catalyst, the improvement involving the aniline containing less than about 3 wt. % of diamines and polyamines from the diphenylmethane series, based on the weight of the aniline.
    Type: Application
    Filed: January 24, 2007
    Publication date: August 2, 2007
    Inventors: Fritz Pohl, Jeffrey Bolton, Richard Adamson, Heinz-Herbert Muller, Rudolf Uchdorf
  • Process for the production of light-colored isocyanates
    Publication number: 20070167646
    Abstract: The invention relates to an improved process for the production of isocyanates by the reaction of an amine or a mixture of two or more amines with phosgene, the improvement involving the phosgene containing less than about 100 ppm of sulfur in elemental or bound form. The inventive process yields light-colored isocyanates that are suitable for the production of polyurethanes or their precursors (e.g. prepolymers) without the treatment processes heretofore required.
    Type: Application
    Filed: January 10, 2007
    Publication date: July 19, 2007
    Inventors: Stefen Wershofen, Torsten Hagen, Christian Steffens, Jeffrey Bolton
  • Process for the production of 4,4'-diphenylmethane diisocyanate
    Publication number: 20070117997
    Abstract: The present invention relates to a process for the production of 4,4?-diphenylmethane diisocyanate (4,4?-MDI) by acid-catalyzed condensation of aniline with formaldehyde, reaction of the mixtures of di- and polyamines obtained with phosgene to form the corresponding mixture of MDI isomers and homologues (di- and polyisocyanates of the diphenylmethane series) and subsequent separation of the mixture by distillation to form 4,4?-MDI and polymeric MDI.
    Type: Application
    Filed: November 15, 2006
    Publication date: May 24, 2007
    Inventors: Berthold Keggenhoff, Jeffrey Bolton
  • Process for the production of carbodiimide modified organic isocyanates
    Publication number: 20050282993
    Abstract: The present invention relates to an improved process for the production of carbodiimide modified organic isocyanate, preferably a polymethylene polyphenylisocyanate, and most preferably diphenylmethane diisocyanate. This process includes (1) neutralizing acidic impurities in an organic isocyanate, (2) partially carbodiimidizing isocyanate groups of the neutralized organic isocyanate, and (3) terminating the carbodiimidization reaction.
    Type: Application
    Filed: June 17, 2004
    Publication date: December 22, 2005
    Inventors: James Rosthauser, James Garrett, Jeffrey Bolton
  • Process for the production of very pure 2,4'-methylenediphenyl diisocyanate
    Publication number: 20050222291
    Abstract: The present invention relates to a process for the production of MDI fractions containing 2,4?-MDI, and in which the 2,2?-MDI component from the MDA production is largely removed from the isomer mixture. Highly reactive monomeric MDI products can be produced in this way. These MDI products are characterised in their processing by significantly reduced emissions of MDI monomers.
    Type: Application
    Filed: February 1, 2005
    Publication date: October 6, 2005
    Inventors: Hans-Georg Pirkl, Jeffrey Bolton, Walter Meckel, Ulrich Wolf, Matthias Wintermantel
  • Method and device for determining the isomer composition in isocyanate production processes
    Publication number: 20050003553
    Abstract: The invention relates to a method for determining the isomer composition in an isocyanate isomer mixture, wherein a spectrum of the isomer mixture is recorded and the spectrum is entered into a chemometric calibration model.
    Type: Application
    Filed: May 14, 2004
    Publication date: January 6, 2005
    Inventors: Jochen Mahrenholtz, Andrea Wimschneider, Hans-Georg Pirkl, Heinz-Herbert Muller, Stefan Dresely, Jeffrey Bolton, Martin Schiffhauer, Gdo Wolf, Johannes Schweer, Martin Gerlach