Patents by Inventor Knut Oppenländer

Knut Oppenländer 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: 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: 5298039
    Abstract: Fuels for gasoline engines contain a combination of a nitrogen-containing detergent component and an alkoxylate as a carrier oil component, the alkoxylate being a dialkylphenol-initiated propoxylate.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: March 29, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Mohr, Knut Oppenlaender, Juergen Thomas, Peter Schreyer
  • Patent number: 5286263
    Abstract: Copolymers which are obtainable by free radical copolymerization of (a) C.sub.8 -C.sub.40 -alkyl vinyl ethers, if necessary as a mixture with not more than 50 mol % of C.sub.8 -C.sub.40 -monoolefins, with (b) ethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic anhydrides at from 80.degree. to 300.degree. C. to give copolymers having molecular weights of from 500 to 20,000 g/mol, subsequent solvolysis of the anhydride groups of the copolymers and partial or complete neutralization of the carboxyl groups formed during the solvolysis, in an aqueous medium by means of a base, and which are present in the form of aqueous dispersions or solutions, are used as agents for imparting water repellency to leathers and skins.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: February 15, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Ortwin Schaffer, Herbert Bay, Karl Stork, Norbert Greif, Knut Oppenlaender, Walter Denzinger, Heinrich Hartmann
  • 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: 5279613
    Abstract: Copolymers which are obtainable by free radical copolymerization of (a) C.sub.8 --C.sub.40 -monoolefins with (b) ethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic anhydrides by mass polymerization at from 80.degree. to 300.degree. C. to give copolymers having molecular weights of from 500 to 20,000 g/mol, subsequent solvolysis of the anhydride groups of the copolymers and partial or complete neutralization of the carboxyl groups formed during the solvolysis, in an aqueous medium by means of a base, and which are present in the form of aqueous dispersions or solutions, are used as agents for rendering leathers and skins water-repellent.
    Type: Grant
    Filed: February 5, 1992
    Date of Patent: January 18, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Ortwin Schaffer, Herbert Bay, Karl Stork, Norbert Greif, Knut Oppenlaender, Walter Denzinger, Heinrich Hartmann
  • Patent number: 5266165
    Abstract: Abstract of the Disclosure: Copolymers of (a) C.sub.12 - to C.sub.24 -monoolefins and (b) maleic anhydride or itaconic anhydride, having molecular weights of from 800 to 100,000 g/mol, in the form of partially or completely neutralized semiamides with morpholine, in aqueous solution or dispersion, can be used as sizes for paper.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: November 30, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Arnold DeClercq, Walter Denzinger, Norbert Greif, Heinrich Hartmann, Knut Oppenlaender, Ulrich Riebeling
  • 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: 5234626
    Abstract: The present invention relates to methods of demulsifying employing condensates as demulsifiers for oil-in-water emulsions and prepared fromA) a precondensate from one or more trialkanolamines of the general formula I ##STR1## in which R.sup.1 to R.sup.3 denote the same or different 1,2-alkylene groups of from 2 to 4 carbon atoms, andB) from 0.1 to 30% w/w, based on said precondensate, of one or more of the following compounds II:a) urea or a urea derivative of the general formula IIa ##STR2## b) a urea derivative of the general formula IIb ##STR3## c) a urethane of the general formula IIc ##STR4## and/or d) a urethane of the general formula IId ##STR5## in which R.sup.1 is hydrogen, C.sub.1 -C.sub.20 -alkyl or C.sub.2 -C.sub.20 -alkenyl,R.sup.2 and R.sup.3 are the same or different and denote hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.4 is C.sub.1 -C.sub.4 -alkyl andR.sup.5 is C.sub.1 -C.sub.12 -alkylene.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: August 10, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Fikentscher, Knut Oppenlaender, Johannes P. Dix, Wilfried Sager, Hans-Henning Vogel, Guenther Elfers
  • Patent number: 5217813
    Abstract: In novel polyethyleneimine and polyvinylamine derivatives, the polyethyleneimines contain the structural elements Ia and/or Ib ##STR1## and the polyvinylamines contain the structural elements II.sub.a, II.sub.b and II.sub.c ##STR2## where, for the degrees of polymerization n, m and p, n.gtoreq.1, m.gtoreq.0 and p.gtoreq.0, and X.sup.1 is CR.sup.1 R.sup.2 PO.sub.3 R.sup.3 R.sup.4 or CR.sup.1 R.sup.2 SO.sub.3 R.sup.3, X.sup.2 independently of X.sup.1 is hydrogen, CR.sup.1 R.sup.2 PO.sub.3 R.sup.3 R.sup.4 or CR.sup.1 R.sup.2 SO.sub.3 R.sup.3, Y.sup.1 and Y.sup.2 independently of one another are each one or more CHR.sup.1 PO.sub.3 R.sup.3 R.sup.4 or CHR.sup.1 SO.sub.3 R.sup.3 groups or hydrogen, Y.sup.3 and Y.sup.4 independently of one another and of Y.sup.1 and Y.sup.2 are each hydrogen, CHR.sup.1 PO.sub.3 R.sup.3 R.sup.4 or CHR.sup.1 SO.sub.3 R.sup.3, and Z.sup.1 -Z.sup.4 are identical or different inorganic and/or organic radicals, wherein R.sup.1 and R.sup.2 independently of one another are each hydrogen, C.
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: June 8, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Roser, Juergen Mohr, Armin Lange, Knut Oppenlaender, Walter Denzinger, Thomas Loerzer
  • Patent number: 5213585
    Abstract: Novel alkoxylated polyetherdiamines are useful as gasoline additives, for keeping carburetors and valves clean, and as lubricant additives.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: May 25, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlaender, Juergen Mohr, Roland Schwen, Juergen Thomas
  • Patent number: 5194068
    Abstract: The invention relates to a fuel for gasoline engines and diesel engines, containing small amounts of an ester of a mono- and/or poly-carboxylic acid with an alkyl alkanolamine or alkyl aminopolyalkylene glycol of the general formula I ##STR1## in which R.sub.1 is a C.sub.6 -C.sub.30 -alkyl radical,R.sub.2 is a C.sub.6 -C.sub.30 -alkyl radical or a hydroxyalkyl radical of the general formula II ##STR2## and R.sub.3 is a hydroxylalkyl radical of formula II, in which R.sub.4 is hydrogen or a C.sub.1 -C.sub.6 -alkyl radical and m is an integer from 0 to 100.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: March 16, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Mohr, Knut Oppenlaender, Roland Schwen, Hans P. Rath, Juergen Thomas, Hans-Henning Vogel
  • Patent number: 5190898
    Abstract: Pourable molding compounds containing sinterable powders contain, based on the total compound,a) from 60 to 95% by weight of sinterable powders,b) from 0.1 to 10% by weight of a surfactant, obtainable by alkoxylation of an aliphatic alcohol, fatty acid, fatty acid amide, fatty acid ester or aliphatic amine,c) from 2 to 35% by weight of an organic solvent having a melting point <10.degree. C. and a boiling point of from 40.degree. to 180.degree. C., selected from the group comprising the alkanes, ethers, esters and ketones.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: March 2, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Johan H. H. Ter Maat, Knut Oppenlaender, Hans-Josef Sterzel
  • Patent number: 5147644
    Abstract: Mixtures of polyglycerol fatty esters obtainable by partial esterification of a polyglycerol mixture consisting offrom 0 to 5% by weight of monoglycerol,from 15 to 40% by weight of diglycerol,from 30 to 55% by weight of triglycerol,from 10 to 25% by weight of tetraglycerol,from 0 to 15% by weight of pentaglycerol,from 0 to 10% by weight of hexaglycerol andfrom 0 to 5% by weight of higher polyglycerolswith one or more saturated fatty acids of 12 to 22 carbon atoms or one or more unsaturated fatty acids of 16 to 22 carbon atoms, where the unsaturated fatty acid or fatty acid mixture used may furthermore contain up to 10% by weight of saturated fatty acids of 16 to 22 carbon atoms and the degree of esterification of the saturated or unsaturated fatty acids in the mixture is from 20 to 70%, are used as emulsifiers in cosmetic and pharmaceutical formulations.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: September 15, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlaender, Brigette Wegner, Karl Stork, Franz Frosch, Hans-Ulrich Wekel
  • Patent number: 5145948
    Abstract: Highly viscous adducts of 1,2-butylene oxide with secondary or primary alcohols are prepared in the presence of an alkali as a catalyst.
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: September 8, 1992
    Inventors: Knut Oppenlaender, Roland Schwen, Richard Baur, Charalampos Gousetis, Juergen Mohr, Helmut Mach
  • Patent number: 5124181
    Abstract: Copolymers which containa) from 50 to 90% by weight of C.sub.8 -C.sub.40 -alkyl methacrylates, vinyl esters of C.sub.8 -C.sub.40 -carboxylic acids or mixtures thereof andb) from 10 to 50% by weight of monoethylenically unsaturated C.sub.3 -C.sub.12 -carboxylic acids, monoethylenically unsaturated dicarboxylic anhydrides, monoesters or monoamides of monoethylenically unsaturated C.sub.4 -C.sub.12 -dicarboxylic acids, amides of C.sub.3 -C.sub.12 -monocarboxylic acids or mixtures thereofas copolymerized units and have molecular masses of from 500 to 30,000 are used in at least partially neutralized form in aqueous solution or dispersion for making leather and furs water repellent.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: June 23, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Ortwin Schaffer, Herbert Bay, Karl Stork, Norbert Greif, Knut Oppenlaender, Walter Denzinger, Heinrich Hartmann
  • Patent number: 5112364
    Abstract: Gasolines containing polyetheramine and/or polyetheramine derivatives to improve valve cleaning properties.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: May 12, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans P. Rath, Helmut Mach, Knut Oppenlaender, Willibald Schoenleben, Hans-Henning Vogel
  • 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
  • Patent number: 5064552
    Abstract: A glycol-based antifreeze mixture which is free of nitrites and phosphates contains an alkali metal salt of a C.sub.4 -C.sub.16 -alkenylsuccinic acid, stabilized silicate and further corrosion-inhibiting additives.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: November 12, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlaender, Juergen Mohr, Gert Liebold, Guenter Frey
  • Patent number: 5053154
    Abstract: Adducts of 1,2-butylene oxide with H-azidic organic compounds are used as lubricants, and lubricants contain these adducts.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: October 1, 1991
    Inventors: Knut Oppenlaender, Roland Schwen, Richard Baur, Charalampos Gousetis, Juergen Mohr, Helmut Mach
  • Patent number: 5036699
    Abstract: A sample of a fuel/oil/additive mixture is metered continuously to a channel-like, inclined test element along which there is an increasing temperature profile. Under the increasing action of heat on the flowing mixture, solid residual products form on the test element after a certain flow distance. Their weight and the flow distance are evaluated in order to evaluate the additive.
    Type: Grant
    Filed: October 17, 1989
    Date of Patent: August 6, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Fikentscher, Knut Oppenlaender, Roland Schwen