Patents by Inventor Maike Grever

Maike Grever 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).

  • Viscoelastic foams having high density
    Patent number: 10927212
    Abstract: Provided herein is a process for producing viscoelastic polyurethane foams having a density of from 100 g/dm3 to 300 g/dm3, in which (a) polyisocyanate is mixed with (b) polymeric compounds having groups that are reactive toward isocyanates, (d) a catalyst, and (e) a blowing agent including water at an isocyanate index of from 50 to 95 to give a reaction mixture. The reaction mixture is placed in a mold and reacted to give the flexible polyurethane foam, wherein the polyisocyanate (a) is obtainable by mixing 4,4?-MDI and oligomers of propylene oxide having from 2 to 8 propylene oxide units. The polymeric compounds (b) include at least one polyalkylene oxide having a hydroxyl number of from 20 to 50 mg KOH/g derived from a trifunctional starter molecule and a proportion of ethylene oxide, based on the content of alkylene oxide, of from 0 to 10% by weight.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: February 23, 2021
    Assignee: BASF SE
    Inventors: Udo Hadick, Heinz-Dieter Lutter, Stefanie Hiller, Maike Grever
  • VISCOELASTIC FOAMS HAVING HIGH DENSITY
    Publication number: 20200181315
    Abstract: Provided herein is a process for producing viscoelastic polyurethane foams having a density of from 100 g/dm3 to 300 g/dm3, in which (a) polyisocyanate is mixed with (b) polymeric compounds having groups that are reactive toward isocyanates, (d) a catalyst, and (e) a blowing agent including water at an isocyanate index of from 50 to 95 to give a reaction mixture. The reaction mixture is placed in a mold and reacted to give the flexible polyurethane foam, wherein the polyisocyanate (a) is obtainable by mixing 4,4?-MDI and oligomers of propylene oxide having from 2 to 8 propylene oxide units. The polymeric compounds (b) include at least one polyalkylene oxide having a hydroxyl number of from 20 to 50 mg KOH/g derived from a trifunctional starter molecule and a proportion of ethylene oxide, based on the content of alkylene oxide, of from 0 to 10%.
    Type: Application
    Filed: May 2, 2017
    Publication date: June 11, 2020
    Inventors: Udo Hadick, Heinz-Dieter Lutter, Stefanie Hiller, Maike Grever
  • Hybrid foam
    Patent number: 9850360
    Abstract: The invention relates to highly elastic polyurethane foams which are suitable as functional materials having thermally insulating properties.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: December 26, 2017
    Assignee: BASF SE
    Inventors: Frank Prissok, Steffen Mayer, Tanja Aepker, Maike Grever, Daniela Kranzusch, Marlene Niemann, Florian Felix
  • Hybrid foam
    Patent number: 9346929
    Abstract: The invention relates to highly elastic polyurethane foams which are suitable as functional materials having thermally insulating properties.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: May 24, 2016
    Inventors: Frank Prissok, Steffen Mayer, Tanja Aepker, Maike Grever, Daniela Kranzusch, Marlene Niemann, Florian Felix
  • HYBRID FOAM
    Publication number: 20120297513
    Abstract: The invention relates to highly elastic polyurethane foams which are suitable as functional materials having thermally insulating properties.
    Type: Application
    Filed: May 11, 2010
    Publication date: November 29, 2012
    Inventors: Frank Prissok, Steffen Mayer, Tanja Aepker, Maike Grever, Daniela Kranzusch, Marlene Niemann, Florian Felix