Patents by Inventor Sven Buschmann

Sven Buschmann 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).

  • Polyphosphazene and moulding compound comprising the polyphosphazene
    Patent number: 12655165
    Abstract: Provided is a polyphosphazene produced by a cyclic phosphazene of formula (1) wherein k is a natural number between 1 and 10, with a bis-hydroxy-terminated phosphonate of formula (2) HO—R2—[O—P(O)(R1)—O—R2]a—OH (2), wherein R1 represents C1- to C20-alkyl, C2-C20 alkylene, C5-C20 cycloalkyl or C6-C20 aryl, R2 represents C1- to C20-alkyl, phenyl or a bisphenyl, and n represents 1-10, in the presence of a base. Also provided is a process for producing the polyphosphazene, a moulding compound comprising the polyphosphazene and a thermoplastic polymer.
    Type: Grant
    Filed: February 8, 2023
    Date of Patent: June 16, 2026
    Assignee: Covestro Deutschland AG
    Inventors: Sivathmeehan Yogendra, Vera Taschner, Sven Hobeika, Ayse Deniz, Andrij Pich, Sven Buschmann, Laura Hetjens
  • Polyphosphazene and molding compound containing the polyphosphazene
    Patent number: 12552904
    Abstract: The invention relates to a polyphosphazene produced by a method comprising the steps a) and b): a) converting an in particular cyclical phosphazene by means of phenol in the presence of a base; b) further converting by means of a special aromatic diphenol in the presence of a base, wherein the molar ratio of phenol used to cyclical phosphazene used is in the range from 3.5:1 to 1:1. The invention also relates to a method for producing the polyphosphazene and to a molding compound containing the polyphosphazene and a thermoplastic polymer.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: February 17, 2026
    Assignee: Covestro Deutschland AG
    Inventors: Maxime Paven, Vera Taschner, Sven Hobeika, Thomas Eckel, Stamo Mentizi, Igor Pochorovski, Andrij Pich, Ayse Deniz, Sven Buschmann
  • Polyphosphazene and moulding compound comprising the polyphosphazene
    Publication number: 20240270775
    Abstract: Provided is a polyphosphazene produced by a cyclic phosphazene of formula (1) wherein k is a natural number between 1 and 10, with a bis-hydroxy-terminated phosphonate of formula (2) HO—R2—[O—P(O)(R1)—O—R2]a—OH (2), wherein R1 represents C1- to C20-alkyl, C2-C20 alkylene, C5-C20 cycloalkyl or C6-C20 aryl, R2 represents C1- to C20-alkyl, phenyl or a bisphenyl, and n represents 1-10, in the presence of a base. Also provided is a process for producing the polyphosphazene, a moulding compound comprising the polyphosphazene and a thermoplastic polymer.
    Type: Application
    Filed: February 8, 2023
    Publication date: August 15, 2024
    Inventors: Sivathmeehan YOGENDRA, Vera TASCHNER, Sven HOBEIKA, Ayse DENIZ, Andrij PICH, Sven BUSCHMANN, Laura HETJENS
  • POLYPHOSPHAZENE AND MOLDING COMPOUND CONTAINING THE POLYPHOSPHAZENE
    Publication number: 20220275155
    Abstract: The invention relates to a polyphosphazene produced by a method comprising the steps a) and b): a) converting an in particular cyclical phosphazene by means of phenol in the presence of a base; b) further converting by means of a special aromatic diphenol in the presence of a base, wherein the molar ratio of phenol used to cyclical phosphazene used is in the range from 3.5:1 to 1:1. The invention also relates to a method for producing the polyphosphazene and to a molding compound containing the polyphosphazene and a thermoplastic polymer.
    Type: Application
    Filed: August 27, 2020
    Publication date: September 1, 2022
    Inventors: Maxime Paven, Vera Taschner, Sven Hobeika, Thomas Eckel, Stamo Mentizi, Igor Pochorovski, Andrij Pich, Ayse Deniz, Sven Buschmann