Patents by Inventor Christian Priebe

Christian Priebe 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).

  • Patent number: 12037444
    Abstract: Benzyl ether-type phenolic resins are useful in either a phenolic resin polyurethane cold-box (PUCB) process or a phenolic resin polyurethane no-bake (PUNB) process. The benzyl ether-type phenolic resins contain at least one formaldehyde scavenger in the form of a beta-dicarbonyl compound, and an alpha-carbonyl-carboxyl compound, particularly glyoxylic acid, binders based on these phenolic resins, and isocyanate compounds having at least two isocyanate groups. The resins having the inventive concept exhibit low free formaldehyde content. The inventive concept extends to molding material blends containing the binder, and a method for producing cores, molds or risers.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: July 16, 2024
    Assignee: ASK Chemicals GmbH
    Inventor: Christian Priebe
  • Patent number: 12023726
    Abstract: Molding material mixes that contain a polyurethane binder based on phenolic resins of the benzyl ether type and polyisocyanates are characterized by the inclusion of a polybutadiene derivative. In one case, the polybutadiene derivative has epoxide groups and hydroxyl groups. In another case, the polybutadiene derivative has succinic acid anhydride groups. Molds, cores and risers are produced using these molding material mixes. Inclusion of the polybutadiene derivatives results in a reduction of sand adhesions in the molding process.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: July 2, 2024
    Assignee: ASK Chemicals GmbH
    Inventors: Christian Priebe, Matthias Peter
  • Patent number: 11981807
    Abstract: A release agent is disclosed for use with an organic binder system used in metal casting. The binder system has a Part I component including an epoxy resin and a free radical initiator and a Part II component having an epoxy resin and an acrylate, where the Part I and Part II components are kept separate until the time of use. The release agent will typically have a molecular weight in the range of 150 to 160, with eight to ten carbon atoms. Two examples of the epoxide are pinene oxide and decene-1 oxide, each of which is effective as an internal release agent when present in the binder for a cold box process in the range of about 0.15% to about 1% of the total weight of the Part I and Part II components.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: May 14, 2024
    Assignee: ASK Chemicals LLC
    Inventors: Sritama Kar, Christian Priebe
  • Patent number: 11966385
    Abstract: In various examples, there is provided a computer-implemented method for writing transaction log entries to a transaction log for a database system. At least part of the database system is configured to be executed within a trusted execution environment. The transaction log is stored outside of the trusted execution environment. The method maintains a first secure count representing a number of transaction log entries which have been written to the transaction log for transactions which have been committed to the database and writes a transaction log entry to the transaction log. In other examples, there is also provided is a computer-implemented method for restoring a database system using transaction log entries received from the transaction log and a current value of the first secure count.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: April 23, 2024
    Assignee: Microsoft Technology Licensing, LLC.
    Inventors: Christian Priebe, Kapil Vaswani, Manuel Silverio da Silva Costa
  • Publication number: 20240042514
    Abstract: Molding material mixes that contain a polyurethane binder based on phenolic resins of the benzyl ether type and polyisocyanates are characterized by the inclusion of a polybutadiene derivative. In one case, the polybutadiene derivative has epoxide groups and hydroxyl groups. In another case, the polybutadiene derivative has succinic acid anhydride groups. Molds, cores and risers are produced using these molding material mixes. Inclusion of the polybutadiene derivatives results in a reduction of sand adhesions in the molding process.
    Type: Application
    Filed: July 9, 2021
    Publication date: February 8, 2024
    Inventors: Christian Priebe, Matthias Peter
  • Patent number: 11858030
    Abstract: The subject matter of the invention are sizing compositions containing an aqueous carrier liquid, refractory base materials and CH-acidic compounds, as well as their use for casting molds, as well as casting molds coated with the sizing composition.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: January 2, 2024
    Assignee: ASK Chemicals GmbH
    Inventors: Christian Priebe, Markus Bung, Sarah Voss, Jörg Körschgen
  • Patent number: 11466117
    Abstract: The invention relates to a binder based on phenolic resins of the benzyl ether type and isocyanate compounds having at least two isocyanate groups, containing free phenol and free hydroxybenzyl alcohols in the polyol component. The invention further relates to mold material mixtures containing the binder and to cores, molds, or risers produced with the mold material mixtures and to the use thereof in metal casting.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: October 11, 2022
    Assignee: ASK Chemicals GmbH
    Inventors: Christian Priebe, Philipp Schneider, Mark Stancliff, Brian Weaver
  • Patent number: 11213881
    Abstract: The object of the invention is a component system for producing a binder for metal casting on the basis of phenolic resins of the benzyl ether type and isocyanates containing non-polar solvents.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: January 4, 2022
    Assignee: ASK CHEMICALS GMBH
    Inventors: Christian Priebe, Jens Müller, Heinz Deters, Philip Schneider, Frank Lenzen, Markus Dörschel
  • Patent number: 11120011
    Abstract: In various examples, there is provided a computer-implemented method for writing transaction log entries to a transaction log for a database system. At least part of the database system is configured to be executed within a trusted execution environment. The transaction log is stored outside of the trusted execution environment. The method maintains a first secure count representing a number of transaction log entries which have been written to the transaction log for transactions which have been committed to the database and writes a transaction log entry to the transaction log. In other examples, there is also provided is a computer-implemented method for restoring a database system using transaction log entries received from the transaction log and a current value of the first secure count.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: September 14, 2021
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Christian Priebe, Kapil Vaswani, Manuel Silverio da Silva Costa
  • Patent number: 10919085
    Abstract: The subject matter of the invention is mold material mixtures for producing molds or cores for metal casting, consisting of at least one refractory base mold material, a binder and an additive based on factice. The invention also relates to a component system, a method for producing molds and cores using the mold material mixtures or the component system respectively, and to molds and cores produced by said method.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: February 16, 2021
    Assignee: ASK Chemicals GmbH
    Inventors: Ingrid Ernst, Christian Priebe, Michael Richters
  • Patent number: 10807151
    Abstract: Defects can arise in a product of a metal casting process from reactions occurring at a metal-mold interface. A method that reduces the defects uses an organic binder system by introducing a separate third component to a two-part polyurethane-based binder system used in the cold box or no bake process. The third part is added only after the first two parts are mixed with a refractory molding material to provide a shapeable foundry mix. The third part is an alkyl silicate, such as tetraethyl orthosilicate (“TEOS”), an alkyl orthoformate, such as trimethyl orthoformate (TMOF) or triethyl orthoformate (TEOF), or combinations thereof.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: October 20, 2020
    Assignee: ASK Chemicals LLC
    Inventors: Xianping Wang, Mark Stancliffe, Christian Priebe, Joerg Kroker
  • Patent number: 9889498
    Abstract: The invention relates to mold material mixtures for producing molds and cores for metal casting, consisting of at least one refractory material, a binder based on resols and amorphous silicon dioxide. The invention also relates to a multicomponent system and methods for producing molds and cores using the mold material mixtures as well as molds and cores for metal casting produced according to this method.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: February 13, 2018
    Assignee: ASK Chemicals GmbH
    Inventors: Jörg Körschgen, Christian Priebe, Pierre-Henri Vacelet
  • Patent number: 9493602
    Abstract: The present invention relates to a polyurethane-based binder using isocyanates containing uretonimine and/or carbodiimide groups for producing cores and casting molds, to a mold material mixture containing the binder, and to a method using the binder for producing casting molds.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: November 15, 2016
    Assignee: ASK CHEMICALS GMBH
    Inventors: Carsten Cornelissen, Diether Koch, Christian Priebe
  • Patent number: 9000067
    Abstract: A binder for mold material mixtures is a four-component material. It contains at least one phenolic resin component, at least one isocyanate component, at least one alkyl/alkenyl benzene and at least one dialkylated and/or dialkenylated naphthalene. The phenolic resin component acts as the polyol component and contains phenolic resin obtainable from the reaction between a phenol compound and an aldehyde compound. The isocyanate component contains at least one polyisocyanate with at least two NCO groups per molecule. The alkyl/alkenyl benzene has a boiling point above 250° C. The dialkylated and/or dialkenylated naphthalene has a boiling point above 270° C.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: April 7, 2015
    Assignee: Ask Chemicals GmbH
    Inventors: Christian Priebe, Diether Koch
  • Publication number: 20140300031
    Abstract: A binder system for a molding mixture has at least one phenolic resin component, at least one isocyanate component and at least one solvent component, where the at least one solvent component is a cyclic formal, also known as a cyclic formaldehyde, with or without additional solvents. The phenolic resin component is prepared by reacting a phenol compound with an aldehyde compound. The isocyanate component has at least polyisocyanate that has at least two isocyanate groups per molecule. In the molding mixture, the binder is combined with a refractory molding material.
    Type: Application
    Filed: July 28, 2011
    Publication date: October 9, 2014
    Applicant: ASK CHEMICALS GMBH
    Inventors: Christian Priebe, Diether Koch
  • Patent number: 8813830
    Abstract: The invention relates to a molding material mixture for production of molded products for the foundry industry, comprising at least one fire-resistant base molding material and a polyurethane-based binder system comprising a polyisocyanate component and a polyol component. According to the invention, the polyurethane-based binder system comprises a portion of a carboxylic acid diester of a branched alkane diol, said portion being at least 3 weight-%, and a portion of aromatic solvent of less than 10 weight-% of the binder system. A preferable carboxylic acid diester is 2,2,4-trimethyl-1,3-pentandiol-diisobutyrate. The molded products produced from the molding material mixture for the foundry industry are characterized by a high strength and a lower generation of fumes and smoke during pouring.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: August 26, 2014
    Assignee: ASK Chemicals GmbH
    Inventors: Christian Priebe, Diether Koch
  • Publication number: 20130299120
    Abstract: A binder for mold material mixtures is a four-component material. It contains at least one phenolic resin component, at least one isocyanate component, at least one alkyl/alkenyl benzene and at least one dialkylated and/or dialkenylated naphthalene. The phenolic resin component acts as the polyol component and contains phenolic resin obtainable from the reaction between a phenol compound and an aldehyde compound. The isocyanate component contains at least one polyisocyanate with at least two NCO groups per molecule. The alkyl/alkenyl benzene has a boiling point above 250° C. The dialkylated and/or dialkenylated naphthalene has a boiling point above 270° C.
    Type: Application
    Filed: September 30, 2011
    Publication date: November 14, 2013
    Applicant: ASK CHEMICALS GMBH
    Inventors: Christian Priebe, Diether Koch
  • Publication number: 20130248138
    Abstract: The present invention relates to a polyurethane-based binder using isocyanates containing uretonimine and/or carbodiimide groups for producing cores and casting molds, to a mold material mixture containing the binder, and to a method using the binder for producing casting molds.
    Type: Application
    Filed: November 17, 2011
    Publication date: September 26, 2013
    Applicant: ASK CHEMICALS GMBH
    Inventors: Carsten Cornelissen, Diether Koch, Christian Priebe
  • Publication number: 20110036528
    Abstract: A process for producing a mold includes introducing a composition including a particulate, refractory material and a binder into a hollow model having an interior cavity which determines contours of all surfaces of the mold or a mold part, wherein the model includes at least two separate parts to permit removal of the mold, and applying a second composition containing at least one organosilicon component and at least one solvent to at least one of the separable parts before use.
    Type: Application
    Filed: December 19, 2008
    Publication date: February 17, 2011
    Applicants: ITN NANOVATION AG, ASHLAND-SUEDCHEMIE-KERNFEST GMBH
    Inventors: Christian Goebbert, Michael Hanisch, Volker Hofmann, Frank Meyer, Ralph Nonninger, Henning Rehse, Magnus Jundt, Christian Priebe, Gunther Schaffer
  • Publication number: 20110005702
    Abstract: The invention relates to a molding material mixture for production of molded products for the foundry industry, comprising at least one fire-resistant base molding material and a polyurethane-based binder system comprising a polyisocyanate component and a polyol component. According to the invention, the polyurethane-based binder system comprises a portion of a carboxylic acid diester of a branched alkane diol, said portion being at least 3 weight-%, and a portion of aromatic solvent of less than 10 weight-% of the binder system. A preferable carboxylic acid diester is 2,2,4-trimethyl-1,3-pentandiol-diisobutyrate.
    Type: Application
    Filed: January 30, 2009
    Publication date: January 13, 2011
    Applicant: ASHLAND-SUDCHEMIE-KERNFEST GMBH
    Inventors: Christian Priebe, Diether Koch