Patents by Inventor Christoph SEIPEL

Christoph SEIPEL 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).

  • Process for producing polymethyl methacrylate rigid foams as core materials in rotor blades of wind power plants and in boatbuilding
    Publication number: 20220339829
    Abstract: PMMA-based rigid foams can be used as the core material of sandwich components in rotor blades of wind power plants and in boatbuilding.
    Type: Application
    Filed: June 24, 2020
    Publication date: October 27, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Thomas RICHTER, Christoph Seipel, Vincent Ma Junyong, Florian Becker, Lisa Langel
  • PMMA-based cast polymers having improved mechanical properties
    Publication number: 20220275160
    Abstract: A composition can be used for producing a PMMA-based cast polymer with a low styrene content using urea (derivatives as a formulation constituent, and a hydrophilic inorganic compound as a filler. it is possible to produce PMMA-based cast polymers and mouldings having surprisingly high mechanical stability from the composition.
    Type: Application
    Filed: July 3, 2020
    Publication date: September 1, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Thomas Richter, Christoph Seipel, Kay Bernhard
  • FOAMING OF BLOWING AGENT CONTAINING POLYMERS THROUGH THE USE OF MICROWAVES
    Publication number: 20220126490
    Abstract: (Rigid) foams can be produced by heating a blowing agent containing polymers through the combination of thermal energy with irradiation by microwaves.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 28, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Thomas Richter, Christoph Seipel, Christian Traßl, Andreas Liebe, Florian Becker, Vincent Ma Junyong
  • Improving the properties in PMMA foams by using methacrylic amides
    Patent number: 11155662
    Abstract: The present invention relates to novel PMMA foams and the production thereof. Here, polymers which have been obtained by copolymerization of methacrylamides such as N-isopropylmethacrylamide and without styrene are foamed. It has surprisingly been possible to establish that a stable, simple-to-produce PMMA foam which has very good properties, e.g. a very high compressive strength, and can be joined more simply to covering layers, especially in comparison with known PMMA foams, can be obtained according to the invention.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: October 26, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Thomas Richter, Christoph Seipel, Kay Bernhard
  • Production of a PMMA foam using cross-linking agents, regulators and blowing agents
    Patent number: 10954319
    Abstract: The present invention relates to novel types of PMMA foams and also to the production thereof. The recipes used in the production process include particularly crosslinkers and chain transfer agents as recipe constituents, mostly in low concentrations, in addition to suitable blowing agents. It was found that, surprisingly, the invention provides a simple-to-produce stable PMMA foam having very good properties.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: March 23, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Thomas Richter, Christoph Seipel, Kay Bernhard, Sivakumara K Krishnamoorthy, Sebastian Buehler
  • Polyfunctional alcohols as cross-linkers in PMI foams
    Patent number: 10619024
    Abstract: The invention relates to the production of PMI foams, more particularly to their formulating ingredients, which lead to particular facility in adjusting the density at given foaming temperature.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: April 14, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Thomas Richter, Thomas Barthel, Lars Bork, Christoph Seipel, Kay Bernhard
  • Production of fine-pored PMMA foams using nucleating agents
    Patent number: 10584225
    Abstract: Fine-cell PMMA foams are produced using a production process including nucleators in addition to suitable blowing agents. It was found that, surprisingly, a simple-to-produce stable PMMA foam having very fine cells and very good properties can be produced.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: March 10, 2020
    Assignee: Evonik Roehm GmbH
    Inventors: Thomas Richter, Christoph Seipel, Kay Bernhard, Sivakumara K Krishnamoorthy, Sebastian Buehler
  • IMPROVING THE PROPERTIES IN PMMA FOAMS BY USING METHACRYLIC AMIDES
    Publication number: 20190211124
    Abstract: The present invention relates to novel PMMA foams and the production thereof. Here, polymers which have been obtained by copolymerization of methacrylamides such as N-isopropylmethacrylamide and without styrene are foamed. It has surprisingly been possible to establish that a stable, simple-to-produce PMMA foam which has very good properties, e.g. a very high compressive strength, and can be joined more simply to covering layers, especially in comparison with known PMMA foams, can be obtained according to the invention.
    Type: Application
    Filed: August 31, 2017
    Publication date: July 11, 2019
    Applicant: Evonik Roehm GmbH
    Inventors: Thomas RICHTER, Christoph SEIPEL, Kay BERNHARD
  • Prefoaming of poly(meth)acrylimide particles for subsequent foam moulding in closed tools
    Patent number: 10343314
    Abstract: The invention relates to a process for the production of prefoamed poly(meth)acrylimide (P(M)I) particles which can be further processed to give foam mouldings or composites. A feature of this process is that a polymer granulate is first heated and thus prefoamed in an apparatus by means of IR radiation of a wavelength suitable for this purpose. Said granulate can be further processed in subsequent steps, e.g. in a press mould with foaming to give a moulding or a composite workpiece with foam core.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: July 9, 2019
    Assignee: Evonik Roehm GmbH
    Inventors: Kay Bernhard, Ina Liebl, Denis Holleyn, Christoph Seipel
  • POLYFUNCTIONAL ALCOHOLS AS CROSS-LINKERS IN PMI FOAMS
    Publication number: 20190153186
    Abstract: The invention relates to the production of PMI foams, more particularly to their formulating ingredients, which lead to particular facility in adjusting the density at given foaming temperature.
    Type: Application
    Filed: September 6, 2016
    Publication date: May 23, 2019
    Applicant: Evonik Roehm GmbH
    Inventors: Thomas RICHTER, Thomas BARTHEL, Lars BORK, Christoph SEIPEL, Kay BERNHARD
  • PRODUCTION OF FINE-PORED PMMA FOAMS USING NUCLEATING AGENTS
    Publication number: 20180079882
    Abstract: Fine-cell PMMA foams are produced using a production process including nucleators in addition to suitable blowing agents. It was found that, surprisingly, a simple-to-produce stable PMMA foam having very fine cells and very good properties can be produced.
    Type: Application
    Filed: March 24, 2016
    Publication date: March 22, 2018
    Applicant: Evonik Roehm GmbH
    Inventors: Thomas RICHTER, Christoph SEIPEL, Kay BERNHARD, Sivakumara K KRISHNAMOORTHY, Sebastian BUEHLER
  • PRODUCTION OF A PMMA FOAM USING CROSS-LINKING AGENTS, REGULATORS AND BLOWING AGENTS
    Publication number: 20180066078
    Abstract: The present invention relates to novel types of PMMA foams and also to the production thereof. The recipes used in the production process include particularly crosslinkers and chain transfer agents as recipe constituents, mostly in low concentrations, in addition to suitable blowing agents. It was found that, surprisingly, the invention provides a simple-to-produce stable PMMA foam having very good properties.
    Type: Application
    Filed: March 21, 2016
    Publication date: March 8, 2018
    Applicant: Evonik Roehm GmbH
    Inventors: Thomas RICHTER, Christoph SEIPEL, Kay BERNHARD, Sivakumara K. KRISHNAMOORTHY, Sebastian BUEHLER
  • PREFOAMING OF POLY(METH)ACRYLIMIDE PARTICLES FOR SUBSEQUENT FOAM MOULDING IN CLOSED TOOLS
    Publication number: 20160332344
    Abstract: The invention relates to a process for the production of prefoamed poly(meth)acrylimide (P(M)I) particles which can be further processed to give foam mouldings or composites. A feature of this process is that a polymer granulate is first heated and thus prefoamed in an apparatus by means of IR radiation of a wavelength suitable for this purpose. Said granulate can be further processed in subsequent steps, e.g. in a press mould with foaming to give a moulding or a composite workpiece with foam core.
    Type: Application
    Filed: December 3, 2014
    Publication date: November 17, 2016
    Applicant: EVONIK ROEHM GMBH
    Inventors: Kay BERNHARD, Ina LIEBL, Denis HOLLEYN, Christoph SEIPEL