Patents by Inventor Juergen Ciprian

Juergen Ciprian 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).

  • Process for the preparation of pulverulent alkoxycarbonylaminotriazine
    Patent number: 8030485
    Abstract: The invention relates to a process for preparing free-flowing, pulverulent alkoxycarbonylaminotriazine from an alkanolic reaction mixture which is obtained in the preparation of alkoxycarbonylaminotriazines and comprises at least one alkoxycarbonylaminotriazine, at least one cyclic and/or acyclic carbonic ester, at least one C1-C13-alkanol which optionally comprises one or two oxygen atoms in the form of ether bonds and is optionally substituted by C1-C4-alkyl and/or hydroxyl, and also at least one alkali metal or alkaline earth metal alkoxide, with or without melamine and with or without catalyst, by atomizing and drying the reaction mixture in a spray drier.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: October 4, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Joerg Schneider, Guenter Scherr, Rainer Erhardt, Andreas Eichfelder, Martin Reif, Stefan Hirsch, Georg Sieder, Thomas Holtmann, Juergen Ciprian, Hermann Ascherl
  • Process for extracting (chlorinated) hydrocarbon-free hydrogen chloride and phosgene-free (chlorinated) hydrocarbons from a hydrogen chloride stream containing (chlorinated) hydrocarbons and phosgene
    Patent number: 7819949
    Abstract: (Chloro)hydrocarbon-free hydrogen chloride and phosgene-free (chloro)hydrocarbons are recovered from a hydrogen chloride stream having (chloro)hydrocarbons and phosgene.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: October 26, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Sesing, Heiner Schelling, Juergen Ciprian, Filip Deberdt, Martin Karches, Olga Schubert
  • Method For Removing Salts From A Reaction Mixture Containing Alkoxycarbonyl Amino Triazine
    Publication number: 20080275236
    Abstract: The invention relates to a process for removing salts from an alkanolic reaction mixture which is obtained in the preparation of alkoxycarbonylaminotriazines and comprises at least one alkoxycarbonylaminotriazine, at least one cyclic and/or acyclic carbonic ester, at least one C1-C13-alkanol which optionally comprises one or two oxygen atoms as ether bonds and is optionally substituted by C1-C4-alkyl and/or hydroxyl, and also at least one alkali metal alkoxide or alkaline earth metal alkoxide, with or without melamine and with or without catalyst, in which salts are removed from the reaction mixture by ion exchange over a cation exchanger and/or anion exchanger.
    Type: Application
    Filed: June 1, 2006
    Publication date: November 6, 2008
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Jorg Schneider, Gunter Scherr, Rainer Erhardt, Andreas Eichfelder, Martin Reif, Stefan Hirsch, Georg Sieder, Thomas Holtmann, Juergen Ciprian, Hermann Ascherl
  • Method for producing an alcoholic solutions of polyetrahydrofurane that comprises terminal oh groups
    Publication number: 20040186270
    Abstract: In a process for preparing polytetrahydrofuran having terminal OH groups (PTHF) from the corresponding polytetramethylene ether having acyloxy end groups by transesterification with alcohols in the presence of a sodium-containing catalyst followed by passing the alcoholic PTHF solution in the presence of a catalytic amount of water directly through at least one ion exchanger to remove the sodium ions, the removal of the sodium ions is carried out in a fully continuous ion exchange unit which comprises:
    Type: Application
    Filed: February 19, 2004
    Publication date: September 23, 2004
    Inventors: Juergen Ciprian, Wulfrich Friedemann Beer, Volkmar Menger
  • Preparation of emulsifiable polyethylene by oxidizing polyethylene in a fluidized bed reactor
    Patent number: 4459388
    Abstract: A process for the preparation of water-emulsifiable polyethylene by oxidizing high density polyethylene, at below the softening point of the polyethylene, in the presence of oxygen, wherein the oxidation is carried out in a fluidized bed reactor, using a polyethylene which beforehand has been heated, with exclusion of oxygen, in the presence of a compound which forms free radicals.
    Type: Grant
    Filed: February 19, 1982
    Date of Patent: July 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Albert Hettche, Stefan Weiss, Peter Miederer, Lutz Goethlich, Juergen Ciprian