Patents by Inventor Brigitte Wegner

Brigitte Wegner 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: 5700351
    Abstract: Antifoams based on oil-in-water emulsions, in which the oil phase accounts for from 5 to 50% by weight of the emulsions and consists essentially of a mixture of(a) fatty esters of C.sub.12 -C.sub.22 -carboxylic acids with monohydric to trihydric C.sub.1 -C.sub.22 -alcohols,(b) polyglyceryl esters which are obtainable by at least 20% esterification of polyglycerols which contain at least 2 glyceryl units with at least one C.sub.12 -C.sub.36 -fatty acid and(c) fatty esters of C.sub.12 -C.sub.22 -carboxylic acids and polyalkylene glycols, the molecular weight of the polyalkylene glycols being up to 5,000 g/mol, and, if required,(d) long-chain alcohols, fatty esters of alcohols of at least 22 carbon atoms and C.sub.1 -C.sub.36 -carboxylic acids, distillation residues which are obtainable in the preparation of alcohols having a relatively large number of carbon atoms by oxo synthesis or by the Ziegler process and which may be alkoxylated, and/or(e) hydrocarbons having a boiling point above 200.degree. C.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: December 23, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudolf Schuhmacher, Gabriele Dralle-Voss, Knut Oppenlaender, Brigitte Wegner, Andreas Hohmann
  • Patent number: 5425784
    Abstract: Water-soluble graft polymers of monosaccharides, oligosaccharides, polysaccharides and derivatives thereof, obtainable by free radical polymerization ofA) a monomer selected from, or a monomer mixture of,(a) from 20 to 100% by weight of acrylic acid or methacrylic acid or of a mixture thereof or of the alkali metal, alkaline earth metal or ammonium salts thereof,(b) from 0 to 80% by weight of other monoethylenically unsaturated monomers which are copolymerizable with the monomers (a) and(c) from 0 to 5% by weight of monomers having at least 2 ethylenically unsaturated, nonconjugated double bonds in the molecule,in the presence ofB) monosaccharides, oligosaccharides, polysaccharides, oxidatively, hydrolyrically or enzymatically degraded polysaccharides, oxidized hydrolyrically degraded or oxidized enzymatically degraded polysaccharides, chemically modified mono-, oligo- or polysaccharides or a mixture of the stated compounds in a weight ratio A:B of from 95:5 to 20:80, are used as a tanning agent for the self-
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: June 20, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Heinrich Hartmann, Brigitte Wegner
  • Patent number: 5360454
    Abstract: Abstract of the Disclosure: A process for tanning leather comprises using for this purpose compounds of the general formula I ##STR1## where m is 0 or 1, and the radicalsR are independently of each other C.sub.1 -C.sub.18 -alkyl, which may be substituted by hydroxyl or carboxyl and/or interrupted by oxygen atoms, or else one of the radicals R is a radical of the formula ##STR2## where R.sup.1 is alkylene, which may be substituted by hydroxyl and/or interrupted by oxygen atoms.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: November 1, 1994
    Assignee: Basf Aktiengesellschaft
    Inventors: Norbert Grief, Knut Oppenlaender, Hermann Birkhofer, Brigitte Wegner, Johannes P. Dix
  • Patent number: 5342916
    Abstract: Condensation polymers of sulfonated phenols, urea, other organic nitrogen-bases and formaldehyde, obtainable by(A) sulfonation of phenols with from 1.0 to 1.5 moles of sulfuric acid per mole of phenol and(B) condensation of these sulfonation products with(a) from 0.5 to 1.8 moles of urea per mole of phenol,(b) from 0.001 to 0.5 moles of at least one other organic nitrogen-base per mole of phenol, and(c) from 1.0 to 3.0 moles of formaldehyde per mole of phenol.The condensation polymers are suitable for use as tanning agents in the leather and skin-producing industry and as spraying aids for redispersible polymer powders.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: August 30, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Weiser, Wolfgang Reuther, Karl Stork, Ortwin Schaffer, Gernot Franzmann, Thomas Schwerzel, Maximilian Angel, Joachim Pakusch, Brigitte Wegner
  • Patent number: 5326499
    Abstract: Antifoams for the paper industry are based on oil-in-water emulsions in which the oil phase accounts for from 5 to 50% by weight of the emulsion and contains(a) an alcohol of not less than 12 carbon atoms, fatty esters of alcohols of not less than 22 carbon atoms and C.sub.1 -C.sub.36 -carboxylic acids, distillation residues which are obtainable in the preparation of alcohols having a relatively large number of carbon atoms by the oxo synthesis or by the Ziegler method and which may be alkoxylated, a mixture of the stated compounds and/or(b) a fatty ester of a C.sub.12 -C.sub.22 -carboxylic acid with a monohydric to trihydric C.sub.1 -C.sub.18 -alcohol and, if required,(c) a hydrocarbon having a boiling point above 200.degree. C.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: July 5, 1994
    Assignee: Basf Aktiengesellschaft
    Inventors: Brigitte Wegner, Knut Oppenlaender, Rudolf Schuhmacher, Andreas Hohmann, Gabriele Dralle-Vos
  • Patent number: 5282872
    Abstract: An Otto-cycle engine fuel containing a small amount of an amide, amide/ammonium salt and/or ammonium salt of an aminoalkylene polycarboxylic acid and a long-chain secondary amine as additive for cleaning the carburetor and valves.
    Type: Grant
    Filed: November 3, 1992
    Date of Patent: February 1, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlaender, Brigitte Wegner, Juergen Mohr, Roland Schwen, Klaus Barthold, Juergen Thomas
  • Patent number: 5250225
    Abstract: An ammonium salt of an alkenylsuccinic half-amide of formula (I) below ##STR1## in which R.sup.1 denotes H or a C.sub.6 -C.sub.18 -alkenyl radical, provided that the radicals R.sup.1 are not both H or both C.sub.6 -C.sub.18 -alkenyl,X denotes a group of the formula --NHR.sup.2 or --NR.sup.2 R.sup.3, in whichR.sup.2 and R.sup.3 denote C.sub.1 -C.sub.6 -alkyl, cycloalkyl or a heterocyclic ring attached to the nitrogen atom via an alkylene chain,andA denotes XH or a different primary, secondary, or tertiary amine, for example an alkanolamine or a polyamine,and the use thereof as a corrosion inhibitor in oil and/or gas production technology.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: October 5, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlaender, Brigitte Wegner, Wilhelmus Slotman
  • Patent number: 5071445
    Abstract: Novel reaction products of aminoalkylene polycarboxylic acids with secondary amines and their use as additives to middle distillates together with conventional ethylene copolymers as flow improvers and conductivity improves.
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: December 10, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlaender, Brigitte Wegner, Klaus Barthold, Erich Schwartz, Egon Buettner, Manfred Schramm