Patents by Inventor Pavel Tuzina

Pavel Tuzina 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: 20220144767
    Abstract: A process produces a mono vinyl thioether by reacting acetylene with a compound containing one thiol group and one hydroxy group, referred to as a thiol-hydroxy compound, where the reaction is performed at a pressure below 2 bars.
    Type: Application
    Filed: April 20, 2020
    Publication date: May 12, 2022
    Applicant: BASF SE
    Inventors: Ruth Lohwasser, Pavel Tuzina, Frank Bienewald, Dagmar Pascale Kunsmann-Keitel
  • Patent number: 10323107
    Abstract: Unsaturated compounds of formula (I): wherein: R1, R2, and R3 are each independently H or CH3; R4 is a linear or branched C1-C30-alkylene; R5 and R6 are each independently H, C1-C20-alkyl, C3-C15-cycloalkyl, aryl, —CH2—O—C1-C20-alkyl, or —CH2—O—C2-C20-alkenyl, where R5 and R6 may together form a C3-C6-alkylene; R7 is independently H,C1-C4-alkyl, or where R8 is C1-C22-alkyl or C2-C22-alkenyl; and n is an integer from 2 to 200. Mixtures and polymers including the unsaturated compounds of formula (I). A method for preparing polymers by free-radical polymerization of monomers including the unsaturated compounds of formula (I). A process for preparing polymers including polymer-analogous reactions. And polymers including compounds (I) as cement additives, grinding aids, hydraulic binder additives, concrete plasticizers, reactive plasticizers for preparing plastics, rubber, or latex, associative thickeners and antioxidants, or for preparing polyether siloxanes.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: June 18, 2019
    Assignee: BASF SE
    Inventors: Sophie Maitro-Vogel, Martin Ernst, Christian Schade, Pavel Tuzina, Hoang Trang Tran-Thien, Eva-Maria Reis-Walther, Natalia Shabelina, Nina Susanne Hillesheim, Christian Scholz
  • Publication number: 20160264691
    Abstract: Unsaturated compounds of the general formula (I) where R1, R2, R3 are the same or different and are each independently H, CH3, R4 is a linear or branched C1-C30-alkylene, R5, R6 are the same or different and are each independently, H, C1-C20-alkyl, C3-C15-cycloalkyl, aryl, —CH2—O—C1-C20-alkyl, —CH2—O—C2-C20-alkenyl, where R5 and R6 may together form a C3-C6-alkylene, R7, is the same or different and is independently, H, C1-C4-alkyl, R8 is C1-C22-alkyl, C2-C22-alkenyl, and n is an integer from 2 to 200. Mixtures and polymers comprising compounds of the general formula (I). A method for preparing polymers wherein a free-radical polymerization of monomers comprising unsaturated compounds of the general formula (I) is carried out. A process for preparing polymers comprising polymer-analogous reactions.
    Type: Application
    Filed: October 30, 2014
    Publication date: September 15, 2016
    Applicant: BASF SE
    Inventors: Sophie MAITRO-VOGEL, Martin ERNST, Christian SCHADE, Pavel TUZINA, Hoang Trang TRAN-THIEN, Eva-Maria REIS-WALTHER, Natalia SHABELINA, Nina Susanne HILLESHEIM, Christian SCHOLZ
  • Publication number: 20130165689
    Abstract: Process for preparing one or more complexing agents selected from methylglycinediacetic acid, glutamic acid diacetic acid and salts thereof Process for preparing one or more complexing agents selected from methylglycinediacetic acid, glutamic acid diacetic acid and salts thereof by catalytic dehydrogenation of N,N-bis(2-hydroxyethyl)alanine and/or N,N-bis(2-hydroxyethyl)glutamic acid and/or salts thereof in the presence of alkali metal hydroxide, where a catalyst comprising copper and zirconium dioxide is used, the activation of which is a reduction, wherein the precursor of the catalyst in question has a degree of crystallization K, defined as K = I K · 100 I K + I A , in the range from 0 to 50%.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 27, 2013
    Inventors: Robert BAUMANN, Markus Christian Biel, Axel Franzke, Alfred Oftring, Friedhelm Teich, Paul Klingelhoefer, Guido Henze, Marie Katrin Schroeter, Olesya Kister, Sabine Borchers, Pavel Tuzina, Beate Deimling, Udo Leidel