Patents by Inventor Dirk Steinmeister

Dirk Steinmeister 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).

  • Publication number: 20190367770
    Abstract: The invention relates to a process for producing rigid polyurethane (PUR) and polyurethane/polyisocyanurate (PUR/PIR) foams, comprising the steps of i) producing a reaction mixture containing the components A) an isocyanate-reactive component, B) a polyisocyanate component, and C) a blowing agent, and ii) applying the reaction mixture by using a system comprising at least one casting device. The casting device (100) having: a supply port (12) for feeding the reaction mixture (10), at least one discharge gap (13) extending in a transverse direction (Q) for the discharge of the reaction mixture (10), two gap-forming plates (14) arranged opposite one another, a gap space (15) extending between the gap-forming plates (14) above the discharge gap (13) in a height direction (H), wherein the reaction mixture can be introduced into the gap space (15), distributed over the length of the supply duct (16).
    Type: Application
    Filed: January 30, 2018
    Publication date: December 5, 2019
    Inventors: Dirk Brüning, Achim Symannek, Stephan Schleiermacher, Dirk Steinmeister, Catherine Loevenich, Nicole Welsch
  • Patent number: 10414853
    Abstract: The invention relates to a polyurethane-polyurea binder which contains specific silicones or polyvinyl pyrrolidones and which is suitable for the manufacture of press materials from organic and/or inorganic materials, to the corresponding use of said binders and to the press materials manufactured using the specific binders.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: September 17, 2019
    Assignee: Covestro Deutschland AG
    Inventors: Andreas Pielasch, Dirk Steinmeister, Stephan Schleiermacher, Henry Gu
  • Patent number: 9834655
    Abstract: The invention relates to a method for producing a polyurethane foam, wherein a mixture having the following is discharged from a mixing head through a discharge line: A) a component reactive toward isocyanates; B) a surfactant component; C) a blowing agent component selected from the group comprising linear, branched, or cyclic C1 to C6 hydrocarbons, linear, branched, or cyclic C1 to C6 fluorocarbons, N2, O2, argon, and/or CO2, wherein the blowing agent C) is present in the supercritical or near-critical state; and D) a polyisocyanate component. The component A) has a hydroxyl value=100 mg KOH/g and =1000 mg KOH/g. The blowing agent component C) is present at least partially in the form of an emulsion, and means provided with an opening or several openings are arranged in the discharge line in order to increase the flow resistance during the discharge of the mixture comprising A), B), C), and D), wherein the cross-sectional area of the opening or the sum of the cross-sectional areas of all openings is =0.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: December 5, 2017
    Assignee: CONVESTRO DEUTSCHLAND AG
    Inventors: Dirk Steinmeister, Stephan Moers, Stefan Lindner, Wolfgang Friederichs, Juergen Straeter
  • Patent number: 9718936
    Abstract: The present invention relates to a process for producing a rigid polyurethane-polyisocyanurate foam C, comprising the step of reacting (i) an isocyanate-terminated prepolymer B with (ii) an activator component A comprising at least one trimerization catalyst A1 and at least one blowing agent A3 in a reaction mixture to form a foam, characterized in that—there is used an isocyanate-terminated prepolymer B obtained from a reaction of an isocyanate B1 having a mean isocyanate functionality of from ?2.3 to ?2.9 with a polyol component B2, and—the activator component A comprises water as the blowing agent A3 in an amount of from ?5 wt. % to ?50 wt. %,—the isocyanate index in the reaction mixture is in a range of from ?400 to ?500, and—the isocyanate content of the prepolymer B is in a range of from ?21 wt. % to ?30 wt. %, based on the total mass of the prepolymer B, and—wherein in the reaction of the prepolymer B and the activator component A a conversion contribution to polyisocyanurate of ?75% is achieved.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: August 1, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Stephan Schleiermacher, Patrick Klasen, Reinhard Albers, Stephan Moers, Dirk Steinmeister, Dieter Seidel, Torsten Heinemann, Hans-Detlef Arntz
  • Publication number: 20170037180
    Abstract: The invention relates to a polyurethane-polyurea binder which contains specific silicones or polyvinyl pyrrolidones and which is suitable for the manufacture of press materials from organic and/or inorganic materials, to the corresponding use of said binders and to the press materials manufactured using the specific binders.
    Type: Application
    Filed: April 15, 2015
    Publication date: February 9, 2017
    Inventors: Andreas PIELASCH, Dirk STEINMEISTER, Stephan SCHLEIERMACHER, Henry GU
  • Publication number: 20150051301
    Abstract: The present invention relates to a process for producing a rigid polyurethane-polyisocyanurate foam C, comprising the step of reacting (i) an isocyanate-terminated prepolymer B with (ii) an activator component A comprising at least one trimerisation catalyst A1 and at least one blowing agent A3 in a reaction mixture to form a foam, characterised in that—there is used an isocyanate-terminated prepolymer B obtained from a reaction of an isocyanate B1 having a mean isocyanate functionality of from ?2.3 to ?2.9 with a polyol component B2, and—the activator component A comprises water as the blowing agent A3 in an amount of from ?5 wt. % to ?50 wt. %,—the isocyanate index in the reaction mixture is in a range of from ?400 to ?500, and—the isocyanate content of the prepolymer B is in a range of from ?21 wt. % to ?30 wt. %, based on the total mass of the prepolymer B, and—wherein in the reaction of the prepolymer B and the activator component A a conversion contribution to polyisocyanurate of ?75% is achieved.
    Type: Application
    Filed: February 5, 2013
    Publication date: February 19, 2015
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Stephan Schleiermacher, Patrick Klasen, Reinhard Albers, Stephan Moers, Dirk Steinmeister, Dieter Seidel, Torsten Heinemann, Hans-Detlef Arntz
  • Publication number: 20140066534
    Abstract: The invention relates to a method for producing a polyurethane foam, wherein a mixture having the following is discharged from a mixing head through a discharge line: A) a component reactive toward isocyanates; B) a surfactant component; C) a blowing agent component selected from the group comprising linear, branched, or cyclic C1 to C6 hydrocarbons, linear, branched, or cyclic C1 to C6 fluorocarbons, N2, O2, argon, and/or CO2, wherein the blowing agent C) is present in the supercritical or near-critical state; and D) a polyisocyanate component. The component A) has a hydroxyl value=100 mg KOH/g and =1000 mg KOH/g. The blowing agent component C) is present at least partially in the form of an emulsion, and means provided with an opening or several openings are arranged in the discharge line in order to increase the flow resistance during the discharge of the mixture comprising A), B), C), and D), wherein the cross-sectional area of the opening or the sum of the cross-sectional areas of all openings is =0.
    Type: Application
    Filed: April 24, 2012
    Publication date: March 6, 2014
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Dirk Steinmeister, Stephan Moers, Stefan Lindner, Wolfgang Friederichs, Juergen Straeter
  • Publication number: 20120178895
    Abstract: The present invention relates to a method for the production of layers and moulded parts consisting of reactive plastic, the reactive components being intermixed on a plurality of planes with the aid of mixed gases. The invention further relates to a device which allows a corresponding method.
    Type: Application
    Filed: August 13, 2010
    Publication date: July 12, 2012
    Applicant: Bayer MaterialScience AG
    Inventors: Hans-Guido Wirtz, Stephan Schleiermacher, Roger Scholz, Frithjof Hannig, Dirk Steinmeister, Frank Grimberg, Andreas Frahm