Patents by Inventor Jurgen Hinz

Jurgen Hinz 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).

  • Purification of p,p-bisphenolate solutions
    Patent number: 5959160
    Abstract: The invention relates to a process for the purification of p,p-bisphenolate solutions such as are obtained in the production of bisphenolates from soda lye and bisphenols by extraction.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: September 28, 1999
    Assignee: Bayer AG
    Inventors: Claus Wulff, Kurt-Peter Meurer, Tony van Osselaer, Roelof Boyens, Jurgen Hinz
  • Process for the purification of bisphenol
    Patent number: 5785823
    Abstract: A process for preparing bisphenol A which has a purity of at least 99.95 wt. % of p,p-bisphenol A (BPA). Thermally stable and colour-stable BPA purified in accordance with the invention produces improved thermal and colour stability and improved optical transparency in polymers such as e.g. polycarbonates prepared therefrom.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: July 28, 1998
    Assignee: Bayer AG Konzernverwaltung RP
    Inventors: Kurt-Peter Meurer, Tony Van Osselaer, Werner Verhoeven, Johan Vaes, Ignace Hooftman, Willy Van Herck, Claus Wulff, Jurgen Hinz, Alfred Eitel, Kaspar Hallenberger
  • Crystalline adduct of bisphenol A and bisphenol TMC
    Patent number: 5756860
    Abstract: The invention relates to the preparation of a transparent crystalline adduct consisting of bisphenol A (75 parts) and bisphenol TMC (25 parts), which has a melting point of 144.degree. C. which is below the melting points of the pure starting compounds bisphenol A (157.degree. C.) and bisphenol TMC (208.degree. C.).
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: May 26, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt-Peter Meurer, Tony Van Osselaer, Claus Wulff, Jurgen Hinz
  • Method for the preparation of ultra-pure bisphenol A and the use thereof
    Patent number: 5696295
    Abstract: The invention relates to a method for the purification by distillation of p,p-bisphenol A from the melt.The p,p-bisphenol A melt thus obtained is highly heat-stable, stable in storage and colour-stable, is free from high-boiling components and no longer contains any surface-active or non-distillable metal, salt, acid or polymer components and no sulphur-containing components; o,p-BPA and phenol are removed and the low-boiling components are scarcely detectable.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: December 9, 1997
    Assignee: Bayer AG
    Inventors: Claus Wulff, Kaspar Hallenberger, Heinrich Steude, Kurt-Peter Meurer, Tony van Osselaer, Jurgen Hinz, Frank Quaeyhaegens, Johan Vaes, Ignace Hooftman
  • Ionic exchangers modified with thiazolines
    Patent number: 4912263
    Abstract: This invention relates to an ionic exchanger modified with thiazolines, to its preparation and to its use for the preparation of condensation products, particularly bisphenols.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: March 27, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Udo Rudolph, Claus Wulff, Jurgen Hinz, Norbert Bachem
  • Processing of polymer dispersions by spray drying
    Patent number: 4774271
    Abstract: The invention relates to a process for the recovery of thermoplastic polymers from aqueous dispersions by spray-drying after treatment with carboxylic acid of formula I ##STR1## wherein X is a single bond, --CH.sub.2 -- or --C.sub.2 H.sub.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: September 27, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Pol Bamelis, Jurgen Hinz, Dieter Wittmann, Otto Koch, Burkhard Braun
  • Polymer powders containing graft polymer
    Patent number: 4522964
    Abstract: The invention relates to an improved process for the production of polymer powders based on graft polymers and optionally rubber-elastic polymers and vinyl monomer polymers.
    Type: Grant
    Filed: March 28, 1984
    Date of Patent: June 11, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Walter Uerdingen, Jurgen Hinz, Ludwig Trabert
  • Alkyl sulphonic acid phenyl esters substituted by carboxylic acid esters
    Patent number: 4274991
    Abstract: Alkyl sulphonic acid phenyl esters which are substituted by carboxylic acid esters can be obtained by reacting sulphochlorinated paraffins with hydroxy benzoic acid esters. Said compounds can be used as plasticizers for polymers.
    Type: Grant
    Filed: September 29, 1976
    Date of Patent: June 23, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Hinz, Karola Brudermanns
  • Semipermeable membranes of sulphonated polybenz-1,3-oxazin-2,4-diones
    Patent number: 4069215
    Abstract: Semipermeable membranes of sulphonated polybenz-1,3-oxazin-2,4-diones for separating or enriching organic sulphonates by the method of inverse osmosis or ultrafiltration.
    Type: Grant
    Filed: August 10, 1976
    Date of Patent: January 17, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Elfert, Jurgen Hinz, Rudolf Binsack
  • Sulphonated polybenz-1,3-oxazin-2,4-diones
    Patent number: 4059580
    Abstract: Novel, sulphonated polybenz-1,3-oxazin-2,4-diones are produced by reacting polybenzoxazin diones with chlorosulphonic acid in a molar ratio of from 1:1 to 1:10.
    Type: Grant
    Filed: August 10, 1976
    Date of Patent: November 22, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Elfert, Jurgen Hinz, Rudolf Binsack