Patents by Inventor Jan-Gerd Hansel

Jan-Gerd Hansel 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).

  • Preparations having improved efficacy as flame retardants
    Patent number: 11390711
    Abstract: The present invention relates to preparations having improved efficacy as flame retardants, to the use thereof and to polyurethanes containing the preparations according to the invention.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: July 19, 2022
    Assignee: LANXESS Deutschland GmbH
    Inventors: Jan-Gerd Hansel, Heiko Tebbe
  • Phosphoric ester preparations with reduced hygroscopicity
    Patent number: 11193004
    Abstract: The present invention relates to phosphoric ester preparations with reduced hygroscopicity, to use of these as flame retardants and hydraulic fluids, and to polyurethanes which comprise the phosphoric ester preparations of the invention.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: December 7, 2021
    Assignee: LANXESS Deutschland GmbH
    Inventors: Jan-Gerd Hansel, Heiko Tebbe
  • Method for the purification of yellow phosphor
    Patent number: 10882746
    Abstract: The present invention relates to a process for continuous purification of yellow phosphorus by adsorption onto activated carbon.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: January 5, 2021
    Assignee: LANXESS Deutschland GmbH
    Inventors: Jan-Gerd Hansel, Rolf-Michael Jansen, Bernd Rosenow
  • Preparations having improved efficacy as flame retardants
    Publication number: 20200165382
    Abstract: The present invention relates to preparations having improved efficacy as flame retardants, to the use thereof and to polyurethanes containing the preparations according to the invention.
    Type: Application
    Filed: November 21, 2019
    Publication date: May 28, 2020
    Applicant: LANXESS Deutschland GmbH
    Inventors: Jan-Gerd Hansel, Heiko Tebbe
  • METHOD FOR THE PURIFICATION OF YELLOW PHOSPHOR
    Publication number: 20190202698
    Abstract: The present invention relates to a process for continuous purification of yellow phosphorus by adsorption onto activated carbon.
    Type: Application
    Filed: July 7, 2017
    Publication date: July 4, 2019
    Applicant: LANXESS Deutschland GmbH
    Inventors: Jan-Gerd HANSEL, Rolf-Michael JANSEN, Bernd ROSENOW
  • PHOSPHORIC ESTER PREPARATIONS WITH REDUCED HYGROSCOPICITY
    Publication number: 20190071556
    Abstract: The present invention relates to phosphoric ester preparations with reduced hygroscopicity, to use of these as flame retardants and hydraulic fluids, and to polyurethanes which comprise the phosphoric ester preparations of the invention.
    Type: Application
    Filed: November 1, 2018
    Publication date: March 7, 2019
    Applicant: LANXESS Deutschland GmbH
    Inventors: Jan-Gerd HANSEL, Heiko TEBBE
  • Poly(alkylene phosphates) with reduced hygroscopicity
    Publication number: 20180291156
    Abstract: A mixture of poly(alkylene phosphates) having reduced hygroscopicity, includes at least three poly(alkylene phosphates) of the formula wherein R1, R2, R3 and R4, mutually independently, are an n-butyl moiety or a 2-methylpropyl moiety, and is usable for flame retardants, such as a flame retardant in polyurethanes.
    Type: Application
    Filed: April 5, 2018
    Publication date: October 11, 2018
    Applicant: LANXESS Deutschland GmbH
    Inventors: Heiko TEBBE, Jan-Gerd HANSEL
  • Hydroxyl-containing poly(alkylene phosphates)
    Patent number: 9969845
    Abstract: Flame retardant compositions for polyurethanes may include hydroxyl-containing poly(alkylene phosphates) that have 5 mol % or less of phosphorus from phosphorus-containing compounds having a 31P NMR resonance signal at a chemical shift in the range from 13 ppm to 18 ppm relative to 85 wt % phosphoric acid.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: May 15, 2018
    Assignee: LANXESS Deutschland GmbH
    Inventors: Jan-Gerd Hansel, Heiko Tebbe, Michael Wittpahl
  • Halogen-free poly(alkylene phosphates)
    Patent number: 9920081
    Abstract: The present invention relates to halogen-free oligomer mixtures of poly(alkylene phosphates), production of these and use as flame retardants, and also to flame-retardant polyurethanes comprising halogen-free oligomer mixtures as flame retardants.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: March 20, 2018
    Assignee: LANXESS Deutschland GmbH
    Inventors: Jan-Gerd Hansel, Heiko Tebbe
  • Low-scorch flame-retardant polyurethane foams
    Patent number: 9850358
    Abstract: Low-scorch flame-retardant polyurethane foams include phosphorus-containing propionic ester flame retardants. Methods for producing and using the foams are also provided.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: December 26, 2017
    Assignee: LANXESS Deutschland GmbH
    Inventors: Heiko Tebbe, Jan-Gerd Hansel
  • FLAME-RETARDANT CELLULOSE ESTER PREPARATIONS
    Publication number: 20160257704
    Abstract: Flame retardant cellulose ester preparations include phosphorus-containing propionic acid derivatives as flame-retardant plasticizers.
    Type: Application
    Filed: March 1, 2016
    Publication date: September 8, 2016
    Inventors: Heiko TEBBE, Jan-Gerd HANSEL, Otto MAUERER
  • HYDROXYL-CONTAINING POLY(ALKYLENE PHOSPHATES)
    Publication number: 20160215101
    Abstract: Flame retardant compositions for polyurethanes may include hydroxyl-containing poly(alkylene phosphates) that have 5 mol % or less of phosphorus from phosphorus-containing compounds having a 31P NMR resonance signal at a chemical shift in the range from 13 ppm to 18 ppm relative to 85 wt % phosphoric acid.
    Type: Application
    Filed: January 6, 2016
    Publication date: July 28, 2016
    Inventors: Jan-Gerd HANSEL, Heiko TEBBE, Michael WITTPAHL
  • LOW-SCORCH FLAME-RETARDANT POLYURETHANE FOAMS
    Publication number: 20160046778
    Abstract: Low-scorch flame-retardant polyurethane foams include phosphorus-containing propionic ester flame retardants.
    Type: Application
    Filed: July 30, 2015
    Publication date: February 18, 2016
    Inventors: Heiko TEBBE, Jan-Gerd HANSEL
  • PHOSPHORIC ESTER PREPARATIONS WITH REDUCED HYGROSCOPICITY
    Publication number: 20150080276
    Abstract: The present invention relates to phosphoric ester preparations with reduced hygroscopicity, to use of these as flame retardants and hydraulic fluids, and to polyurethanes which comprise the phosphoric ester preparations of the invention.
    Type: Application
    Filed: September 9, 2014
    Publication date: March 19, 2015
    Inventors: Jan-Gerd HANSEL, Heiko TEBBE
  • Process for preparing alkyl phosphates
    Patent number: 8846967
    Abstract: The present invention relates to a process for preparing tetraalkyl bisphosphates by reacting tetrachlorobisphosphates with alcohols, neutralizing the resultant hydrogen chloride with a base, and isolating the desired product from the reaction mixture by extraction.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: September 30, 2014
    Assignee: LANXESS Deutschland GmbH
    Inventor: Jan-Gerd Hansel
  • HALOGEN-FREE POLY(ALKYLENE PHOSPHATES)
    Publication number: 20140024734
    Abstract: The present invention relates to halogen-free oligomer mixtures of poly(alkylene phosphates), production of these and use as flame retardants, and also to flame-retardant polyurethanes comprising halogen-free oligomer mixtures as flame retardants.
    Type: Application
    Filed: July 15, 2013
    Publication date: January 23, 2014
    Inventors: Jan-Gerd HANSEL, Heiko TEBBE
  • Flame-retardant wood-based materials
    Patent number: 8535578
    Abstract: The present invention relates to wood-base materials made flame-retardant with halogen-free organic phosphorus compounds, and to compositions and processes for their production and their use.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: September 17, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventors: Jan-Gerd Hansel, Otto Mauerer, Maria Gärtner
  • Flame-retardant timber materials
    Patent number: 8475934
    Abstract: The present invention relates to timber materials rendered flame-retardant by using halogen-free organophosphorus compounds, to means and processes for producing these materials, and also to their use.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: July 2, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventors: Jan-Gerd Hansel, Heiko Tebbe
  • Process for preparing alkyl phosphates
    Publication number: 20120184765
    Abstract: The present invention relates to a process for preparing tetraalkyl bisphosphates by reacting tetrachlorobisphosphates with alcohols, neutralizing the resultant hydrogen chloride with a base, and isolating the salt formed in the neutralization from the reaction mixture as a solid.
    Type: Application
    Filed: January 13, 2012
    Publication date: July 19, 2012
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Jan-Gerd Hansel, Oliver Falkner
  • Process for preparing alkyl phosphates
    Publication number: 20120184764
    Abstract: The present invention relates to a process for preparing tetraalkyl bisphosphates by reacting tetrachlorobisphosphates with alcohols, neutralizing the resultant hydrogen chloride with a base, and isolating the salt formed in the neutralization from the reaction mixture as a solid.
    Type: Application
    Filed: January 13, 2012
    Publication date: July 19, 2012
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventor: Jan-Gerd Hansel