Patents by Inventor Alexander Khvorost

Alexander Khvorost 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: 8759458
    Abstract: The present invention relates to a process for the production of polyarylene ether block copolymers comprising, in a first stage, the reaction of at least one aromatic dihydroxy compound comprising 4,4?-dihydroxybiphenyl in a molar excess and of at least one aromatic dihalogen compound, to form a polybiphenyl sulfone polymer, and then, in a second stage, the reaction of the polybiphenyl sulfone polymer with at least one aromatic dihydroxy compound and of at least one aromatic dihalogen compound. The invention further relates to the resultant polyarylene sulfone block copolymers and to the use of the polyarylene sulfone block copolymers for the production of moldings, fibers, films, or foams.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: June 24, 2014
    Assignee: BASF SE
    Inventors: Martin Weber, Christian Schmidt, Alexander Khvorost, Cecile Gibon, Christian Maletzko
  • Publication number: 20120083541
    Abstract: An aromatic polyether sulfone block copolymer comprises hydrophilic segments which have sulfonic acid groups and hydrophobic segments which have no sulfonic acid groups, wherein the proportion by weight of hydrophilic segments is from 0.02 to 0.35.
    Type: Application
    Filed: June 15, 2010
    Publication date: April 5, 2012
    Applicant: BASF SE
    Inventors: Alexander Khvorost, Martin Weber, Christian Schmidt, Jörg Belack, Cecile Gibon, Bernd-Steffen Von Bernstorff
  • Publication number: 20120083579
    Abstract: The present invention relates to a process for the production of polyarylene ether block copolymers comprising, in a first stage, the reaction of at least one aromatic dihydroxy compound comprising 4,4?-dihydroxybiphenyl in a molar excess and of at least one aromatic dihalogen compound, to form a polybiphenyl sulfone polymer, and then, in a second stage, the reaction of the polybiphenyl sulfone polymer with at least one aromatic dihydroxy compound and of at least one aromatic dihalogen compound. The invention further relates to the resultant polyarylene sulfone block copolymers and to the use of the polyarylene sulfone block copolymers for the production of moldings, fibers, films, or foams.
    Type: Application
    Filed: June 2, 2010
    Publication date: April 5, 2012
    Applicant: BASF SE
    Inventors: Martin Weber, Christian Schmidt, Alexander Khvorost, Cecile Gibon, Christian Maletzko
  • Publication number: 20110251337
    Abstract: The present invention relates to compositions comprising the following components: (A) at least one polyarylene ether, (B) at least one polyarylene sulfide, and (C) at least one anhydride of a polybasic carboxylic acid with a number-average molar mass of at most 600 g/mol. The present invention moreover relates to the use of the abovementioned anhydrides of polybasic carboxylic acids in compositions comprising at least one polyarylene ether and at least one polyarylene sulfide.
    Type: Application
    Filed: December 8, 2009
    Publication date: October 13, 2011
    Inventors: Martin Weber, Christian Maletzko, Alexander Khvorost, Rüdiger Bluhm, Susanne Zeiher
  • Publication number: 20110201747
    Abstract: The present invention relates to branched polyarylene ethers (A) comprising branching sites of the formula (I): The present invention further relates to a process for preparing the branched polyarylene ethers (A) and to thermoplastic molding materials comprising the branched polyarylene ethers (A) and further thermoplastic polymers (B). The present invention finally relates to the use of the thermoplastic molding materials for producing moldings, and to moldings obtainable from the aforementioned thermoplastic molding materials.
    Type: Application
    Filed: October 19, 2009
    Publication date: August 18, 2011
    Applicant: BASF SE
    Inventors: Martin Weber, Alexander Khvorost, Bernd Bruchmann
  • Publication number: 20100316929
    Abstract: Process for producing aqueous formulations (A) comprising at least one polyaromatic compound bearing acid groups and/or salts of acid groups and also aqueous formulations (A) which have been produced according to the process of the invention. Also a process for producing dried formulations (B) by removing the water from the aqueous formulations (A) and also the dried formulations (B) themselves. In addition a formulation (C) comprising the dried formulation (B) of the invention and also water or an aqueous formulation (A) and a water-comprising formulation (D) comprising the aqueous formulation (A) of the invention or the formulation (C) of the invention and additionally at least 2% by weight of an organic solvent. Additionally dry formulations (E) which are obtained by removing water from the water-comprising formulations (D) of the invention.
    Type: Application
    Filed: December 6, 2007
    Publication date: December 16, 2010
    Applicant: BASF SE
    Inventors: Guenter Oetter, Ria Kress, Dennis Loesch, Alexander Khvorost, Gerhard Eugen Wahsner
  • Publication number: 20100291462
    Abstract: The invention relates to a process for producing catalyst coated membranes for electrochemical devices, which comprises the steps A) production of a first semifinished product by application of a first ionomer layer to a first carrier, application of an anode catalyst layer to the first ionomer layer using a first catalyst ink, drying of the anode catalyst layer, B) production of a second semifinished product by application of a second ionomer layer to a second carrier, application of a cathode catalyst layer to the second ionomer layer using a second catalyst ink, drying of the cathode catalyst layer, C) removal of the first and second carrier from the first and second ionomer layer, respectively, and joining of the first semifinished product to the second semifinished product by joining of the first ionomer layer to the second ionomer layer.
    Type: Application
    Filed: August 15, 2006
    Publication date: November 18, 2010
    Inventors: Sven Thate, Alexander Khvorost, Helmut Moehwald, Ingolf Hennig
  • Patent number: 7776957
    Abstract: The present invention relates to a process for preparing aqueous formulations (A) comprising at least one polyaromatic compound bearing acid groups, in particular a sulfonated polyaromatic compound, and also aqueous formulations (A) which have been prepared by the process of the invention. Furthermore, the present invention relates to a process for preparing dried formulations (B) by removing the water from the aqueous formulations (A) and also the dried formulations (B) themselves. The present invention further provides a formulation (C) comprising the dried formulation (B) of the invention and water or the formulation A of the invention and a water-comprising formulation (D) comprising the aqueous formulation (A) or the formulation (C) of the invention and additionally at least 2% by weight of an organic solvent. Furthermore, the present invention relates to dry formulations (E) which are obtained by removing water and solvent from the water-comprising formulations (D) of the invention.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: August 17, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Alexander Khvorost, Gerhard Eugen Wahsner, Sven Thate, Harald Boehnke, Dennis Loesch
  • Publication number: 20090036550
    Abstract: Vinyllactam copolymers modified with polyalkylene oxide side-chains, and use thereof as solubilizers for substances which are sparingly soluble in water, and preparations comprising such copolymers.
    Type: Application
    Filed: November 30, 2006
    Publication date: February 5, 2009
    Applicant: BASF SE
    Inventors: Nathalie Bouillo, Alexander Khvorost, Ingo Munster, Rainer Dobrawa, Kathrin Meyer-Bohm, Ronald Frans Maria Lange
  • Publication number: 20080255326
    Abstract: Processes for preparing graft polymers and their use for inhibiting gas hydrates
    Type: Application
    Filed: October 25, 2006
    Publication date: October 16, 2008
    Applicant: BASF SE
    Inventors: Ralf Widmaier, Ludger Wegmann, Antonietta Mauri, Klemens Mathauer, Wolfgang Jahnel, Lidcay Herrera Taboada, Karin Neubecker, Alexander Khvorost
  • Publication number: 20080214719
    Abstract: The present invention relates to a process for preparing aqueous formulations (A) comprising at least one polyaromatic compound bearing acid groups, in particular a sulfonated polyaromatic compound, and also aqueous formulations (A) which have been prepared by the process of the invention. Furthermore, the present invention relates to a process for preparing dried formulations (B) by removing the water from the aqueous formulations (A) and also the dried formulations (B) themselves. The present invention further provides a formulation (C) comprising the dried formulation (B) of the invention and water or the formulation A of the invention and a water-comprising formulation (D) comprising the aqueous formulation (A) or the formulation (C) of the invention and additionally at least 2% by weight of an organic solvent. Furthermore, the present invention relates to dry formulations (E) which are obtained by removing water and solvent from the water-comprising formulations (D) of the invention.
    Type: Application
    Filed: June 29, 2006
    Publication date: September 4, 2008
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Alexander Khvorost, Gerhard Eugen Wahsner, Sven Thate, Harald Bohnke, Dennis Losch