Patents by Inventor Alfred Oftring

Alfred Oftring 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: 20060153912
    Abstract: The invention relates to novel choline ascorbate-containing formulations; processes for their preparation and their use in human or animal foods, or human or animal food supplements or pharmaceuticals.
    Type: Application
    Filed: September 22, 2003
    Publication date: July 13, 2006
    Applicant: BASF Aktiengesellschaft
    Inventors: Andreas Habich, Morten Hansen, Carsten Hansen, Brigitte Yde, Alfred Oftring, Michael Schoenherr, Felicitas Guth, Oliver Hasselwander
  • Publication number: 20060058544
    Abstract: The present invention relates to a process for preparing 3-cyano-3,5,5-trimethylcyclohexanone (isophoronenitrile) by reacting isophorone with hydrogen cyanide in the presence of a base as a catalyst to obtain a crude isophoronenitrile product, and subsequently distilling the crude isophoronenitrile product, with the addition before distillation of at least one specific sulfonic acid or specific carboxylic acid. In addition, the present invention relates to the use of a specific sulfonic acid or of a specific carboxylic acid as a neutralizing agent before distillation of a crude isophoronenitrile product which has been obtained by reacting isophorone with hydrogen cyanide in the presence of a base as a catalyst, in order to avoid precipitates in the neutralization of the base used as a catalyst with an acid.
    Type: Application
    Filed: December 16, 2003
    Publication date: March 16, 2006
    Applicant: Basf Aktiengesellschaft
    Inventors: Alfred Oftring, Gerold Braun
  • Patent number: 6855841
    Abstract: The present invention relates to a process for the preparation of N-phosphonomethylglycine by reacting a hexahydrotriazine derivative with a triacyl phosphite. The process gives N-phosphonomethylglycine in high yield and in a simple and inexpensive manner.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: February 15, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Wulff, Stefan Orsten, Alfred Oftring
  • Publication number: 20040236145
    Abstract: The invention relates to a process for preparing N-phosphono-methylglycine by reacting a hexahydrotriazine compound with a triacyl phosphite in an organic solvent, hydrolyzing the resulting phosphono compound after prior extraction into an aqueous phase and separation from the organic phase. The process avoids decomposition of the organic solvent during hydrolysis.
    Type: Application
    Filed: December 22, 2003
    Publication date: November 25, 2004
    Inventors: Christian Wulff, Stefan Orsten, Alfred Oftring, Peter Zehner
  • Publication number: 20040236144
    Abstract: The present invention relates to a process for the preparation of &agr;-aminophosphonic acids by reaction of a hexahydrotriazine derivative with a triorganyl phosphite. The process proceeds via the intermediate of a phosphono compound, which is hydrolyzed to the &agr;-aminophosphonic acid. The invention likewise relates to the phosphono compound itself and the process for its preparation. The process according to the invention gives &agr;-aminophosphonic acids in high yield and purity in a simple and inexpensive manner.
    Type: Application
    Filed: December 22, 2003
    Publication date: November 25, 2004
    Inventors: Christian Wulff, Stefan Orsten, Alfred Oftring
  • Patent number: 6818793
    Abstract: The present invention relates to a process for the preparation of N-phosphonomethylglycine by reacting a hexahydrotriazine derivative with a triacyl phosphite. The process gives N-phosphonomethylglycine in high yield and in a simple and inexpensive manner.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: November 16, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Wulff, Stefan Orsten, Alfred Oftring
  • Publication number: 20040133036
    Abstract: A process for preparing hydroxyalkyl carboxylates comprises reacting a carboxylic acid with an alkylene oxide in the presence of a multimetal cyanide compound of the formula I
    Type: Application
    Filed: October 6, 2003
    Publication date: July 8, 2004
    Inventors: Michael Zirstein, Georg Heinrich Grosch, Edward Bohres, Alfred Oftring, Stefan Birnbach, Werner Bochnitschek, Oliver Borzyk, Rainer Corell, Harald Wurz, Thomas Heidemann, Marcus Sigl
  • Publication number: 20040092765
    Abstract: The present invention relates to a process for the preparation of N-phosphonomethylglycine by reacting a hexahydrotriazine derivative with a triacyl phosphite. The process gives N-phosphonomethylglycine in high yield and in a simple and inexpensive manner.
    Type: Application
    Filed: October 6, 2003
    Publication date: May 13, 2004
    Inventors: Christian Wulff, Stefan Orsten, Alfred Oftring
  • Publication number: 20040063996
    Abstract: The present invention relates to a process for the preparation of N-phosphonomethylglycine by reacting a hexahydrotriazine derivative with a triacyl phosphite. The process gives N-phosphonomethylglycine in high yield and in a simple and inexpensive manner.
    Type: Application
    Filed: September 22, 2003
    Publication date: April 1, 2004
    Inventors: Christian Wulff, Stefan Orsten, Alfred Oftring
  • Patent number: 6660878
    Abstract: The present invention relates to a process for the preparation of N-phosphonomethylglycine by reacting a hexahydrotriazine derivative with a triacyl phosphite. The process gives N-phosphonomethylglycine in high yield and in a simple and inexpensive manner.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: December 9, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Wulff, Stefan Orsten, Alfred Oftring
  • Publication number: 20030166966
    Abstract: The present invention relates to a process for the preparation of N-phosphonomethylglycine by reacting a hexahydrotriazine derivative with a triacyl phosphite. The process gives N-phosphonomethylglycine in high yield and in a simple and inexpensive manner.
    Type: Application
    Filed: February 20, 2003
    Publication date: September 4, 2003
    Inventors: Christian Wulff, Stefan Orsten, Alfred Oftring
  • Publication number: 20030004370
    Abstract: The present invention relates to a process for the preparation of N-phosphonomethylglycine by reacting a hexahydrotriazine derivative with a triacyl phosphite. The process gives N-phosphonomethylglycine in high yield and in a simple and inexpensive manner.
    Type: Application
    Filed: June 24, 2002
    Publication date: January 2, 2003
    Inventors: Christian Wulff, Stefan Orsten, Alfred Oftring
  • Publication number: 20020193624
    Abstract: Alkylpolyalkylene glycol carboxylates are prepared by a process which comprises reacting a carboxylic ester with an alkylene oxide in the presence of a multimetal cyanide compound of the formula I
    Type: Application
    Filed: June 11, 2002
    Publication date: December 19, 2002
    Applicant: BASF Aktiengesellschaft
    Inventors: Michael Zirnstein, Ludwig Voelkel, Matthias Kroner, Edward Bohres, Alfred Oftring
  • Publication number: 20020161039
    Abstract: Crystalline ascorbate, in particular choline ascorbate in the form of crystals free from water of crystallization, processes for its preparation, and its used are described.
    Type: Application
    Filed: February 19, 2002
    Publication date: October 31, 2002
    Inventors: Ludwig Volkel, Alfred Oftring, Oliver Hasselwander, Ulrike Sindel, Klaus Kramer
  • Patent number: 6437181
    Abstract: The invention describes a process for the preparation of (S,S)-N,N′-ethylenediaminedisuccinic acid or analogous compounds or their salts by reaction of L-aspartic acid, L-glutamic acid or L-cysteic acid with 1,2-bissulfooxyethane, 1,3,2-dioxathiolane 2,2-dioxide or mixtures thereof or 1,3-bissulfooxy-2-hydroxypropane in the presence of a base, and optional subsequent acidification with an acid. Also described is a process for the preparation of (S,S)-N,N′-ethylenediaminedisuccinic acid or analogous compounds or their salts by reaction of N-(2-sulfooxyethyl)-L-aspartic acid or its salts with L-aspartic acid or corresponding compounds based on L-glutamic acid, L-cysteic acid and/or 1,3-bissulfooxy-2-hydroxypropane in the presence of a base, and optional subsequent acidification with an acid.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: August 20, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Alfred Oftring, Christian Ott, Birgit Potthoff-Karl
  • Patent number: 6420593
    Abstract: A process for preparing compounds of the formula IIb  where R is C6-C30-alkyl or C6-C30-alkenyl, which may additionally have upto 5 hydroxyl groups, formyl groups, C1-C4-alkoxy groups, phenoxy groups or C1-C4-alkoxycarbonyl groups as substituents and may be interrupted by upto 5 nonadjacent oxygen atoms, or alkoxylate groups of the formula —(CH2)k—O—(A1O)m—(A2O)n—Y where A1 and A2 are, independently of one another, 1,2-alkylene groups having 2 to 4 carbon atoms, Y is hydrogen, C1-C12-alkyl, phenyl or C1-C4-alkoxycarbonyl, and k is 1, 2 or 3, and m and n are each numbers from 0 to 50, and the total of m+n must be at least 4, by reacting iminodiacetonitrile with aldehydes of the formula R—CHO and HCN or alkali metal cyanides, the process being carried out a) in the absence of an organic solvent and in the presence of a Lewis or Brönsted acid, or b) in the presence or absence of an organic solvent and in the presence of an emulsifier, or c)
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: July 16, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Rahm, Thomas Greindl, Alfred Oftring, Guenter Oetter, Juergen Detering, Gerold Braun
  • Patent number: 6413929
    Abstract: Use of amines as bleaching efficiency boosters for textile detergent compositions, where the pKa of the amines is greater than the pH minus 1, preferably greater than the pH, particularly preferably at least 0.5 greater than the pH of the 1% by weight wash liquor obtained from the textile detergent composition.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: July 2, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Wehlage, Dieter Boeckh, Werner Bertleff, Alfred Oftring
  • Patent number: 6410497
    Abstract: Inorganic per compounds may be activated with oxime carbonates of the formula (I), A—O—CO—OR3, a hydroximide ester of formula (II): or polymeric hydroximide esters.
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: June 25, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Elisabeth Kappes, Thomas Wehlage, Alfred Oftring, Dieter Boeckh
  • Patent number: 6380410
    Abstract: Fatty acid derivatives based on epoxidized unsaturated fatty acid esters or triglycerides and reacted with amines such as hydroxy- and/or amino-substituted hydrophilic amines or amino acids and/or with alkanols or with water on the epoxy group and/or the carboxylic ester groups are described. These fatty amides are suitable as surfactants in detergents and cleaners.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: April 30, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Alfred Oftring, Martin aus dem Kahmen, Christian Ott, Günter Oetter, Richard Baur
  • Patent number: 6320064
    Abstract: Fatty acid derivatives based on epoxidized unsaturated fatty acid esters or triglycerides and reacted with amines such as hydroxy- and/or amino-substituted hydrophilic amines or amino acids and/or with alkanols or with water on the epoxy group and/or the carboxylic ester groups are described. These fatty amides are suitable as surfactants in detergents and cleaners.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: November 20, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Alfred Oftring, Martin aus dem Kahmen, Christian Ott, Günter Oetter, Richard Baur