Patents by Inventor Gabor BARATH

Gabor BARATH 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: 9790328
    Abstract: The present invention relates to a method for producing polyethercarbonate-polyoxymethylene block copolymers, comprising the step of polymerizing formaldehyde, wherein formaldehyde is polymerized in the presence of a polyethercarbonate having at least one Zerewitinoff-active H atom, obtaining an intermediate product. The obtained intermediate product can be further reacted with a cyclic carboxylic acid ester or carbonic acid ester, a cyclic anhydride, an epoxide, and/or an isocyanate, wherein a hydroxyl- or carboxy-functional or NCO-modified polyethercarbonate-polyoxymethylene block copolymer is obtained. The present invention further relates to polyethercarbonate-polyoxymethylene block copolymers that can be obtained by means of such a method and to the use of same to produce polyurethane polymers.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: October 17, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Thomas Ernst Mueller, Christoph Guertler, Walter Leitner, Henning Vogt, Gabor Barath, Mario Krautschick
  • Patent number: 9688814
    Abstract: The invention relates to a method for producing functionalized polyoxymethylene block copolymers comprising the step of polymerizing formaldehyde in a reaction vessel in the presence of a catalyst, the polymerization of formaldehyde in addition taking place in the presence of a starter compound comprising at least 2 Zerewitinoff active H atoms, to obtain an intermediate product. The intermediate product obtained is subsequently reacted with a cyclic carboxylic acid ester or carbonic acid ester, thus obtaining a functionalized polyoxymethylene block copolymer. The invention further relates to functionalized polyoxymethylene block copolymers obtained by such a method and to the use of said copolymers.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: June 27, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Thomas Ernst Müller, Christoph Gürtler, Walter Leitner, Henning Vogt, Gabor Barath
  • Patent number: 9534090
    Abstract: The invention relates to a method for producing NCO-modified polyoxymethylene block copolymers comprising the step of polymerizing formaldehyde in a reaction vessel in the presence of a catalyst, the polymerization of formaldehyde in addition taking place in the presence of a starter compound comprising at least 2 Zerewitinoff active H atoms to obtain an intermediate product. The intermediate product obtained is reacted further with an isocyanate to obtain an NCO-modified polyoxymethylene block copolymer. The invention also relates to NCO-modified polyoxymethylene block copolymers obtained by a method of this type and to the use of said copolymers for producing polyurethane polymers.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: January 3, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Thomas Ernst Müller, Christoph Gürtler, Walter Leitner, Henning Vogt, Gabor Barath
  • Publication number: 20160130407
    Abstract: The present invention relates to a method for producing polyethercarbonate-polyoxymethylene block copolymers, comprising the step of polymerizing formaldehyde, wherein formaldehyde is polymerized in the presence of a polyethercarbonate having at least one Zerewitinoff-active H atom, obtaining an intermediate product. The obtained intermediate product can be further reacted with a cyclic carboxylic acid ester or carbonic acid ester, a cyclic anhydride, an epoxide, and/or an isocyanate, wherein a hydroxyl- or carboxy-functional or NCO-modified polyethercarbonate-polyoxymethylene block copolymer is obtained. The present invention further relates to polyethercarbonate-polyoxymethylene block copolymers that can be obtained by means of such a method and to the use of same to produce polyurethane polymers.
    Type: Application
    Filed: June 10, 2014
    Publication date: May 12, 2016
    Inventors: Thomas Ernst Mueller, Christoph Guertler, Walter Leitner, Henning Vogt, Gabor Barath, Mario Krautschick
  • Publication number: 20150368396
    Abstract: The invention relates to a method for producing functionalized polyoxymethylene block copolymers comprising the step of polymerizing formaldehyde in a reaction vessel in the presence of a catalyst, the polymerization of formaldehyde in addition taking place in the presence of a starter compound comprising at least 2 Zerewitinoff active H atoms, to obtain an intermediate product. The intermediate product obtained is subsequently reacted with a cyclic carboxylic acid ester or carbonic acid ester, thus obtaining a functionalized polyoxymethylene block copolymer. The invention further relates to functionalized polyoxymethylene block copolymers obtained by such a method and to the use of said copolymers.
    Type: Application
    Filed: December 18, 2013
    Publication date: December 24, 2015
    Inventors: Thomas Ernst MÜLLER, Christoph GÜRTLER, Walter LEITNER, Henning VOGT, Gabor BARATH
  • Publication number: 20150322213
    Abstract: The invention relates to a method for producing NCO-modified polyoxymethylene block copolymers comprising the step of polymerizing formaldehyde in a reaction vessel in the presence of a catalyst, the polymerization of formaldehyde in addition taking place in the presence of a starter compound comprising at least 2 Zerewitinoff active H atoms to obtain an intermediate product. The intermediate product obtained is reacted further with an isocyanate to obtain an NCO-modified polyoxymethylene block copolymer. The invention also relates to NCO-modified polyoxymethylene block copolymers obtained by a method of this type and to the use of said copolymers for producing polyurethane polymers.
    Type: Application
    Filed: December 16, 2013
    Publication date: November 12, 2015
    Inventors: Thomas Ernst MÜLLER, Christoph GÜRTLER, Walter LEITNER, Henning VOGT, Gabor BARATH