Patents by Inventor Christian Schade

Christian Schade 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: 6951901
    Abstract: A process for preparing impact-resistant molding compositions by anionic polymerization of vinylaromatic monomers in the presence of a rubber, in a continuous-flow reactor cascade composed of at least two reactors, where the vinylaromatic monomers are fed in substreams to the reactors of the reactor cascade, and an anionic initiator and a rubber are fed at least to the first reactor, and where the reactor cascade is composed of back-mixing reactors.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: October 4, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Hermann Gausepohl, Jürgen Demeter, Philippe Desbois, Christian Schade
  • Publication number: 20040266946
    Abstract: A process for preparing impact-resistant molding compositions by anionic polymerization of vinylaromatic monomers in the presence of a rubber, in a continuous-flow reactor cascade composed of at least two reactors, where the vinylaromatic monomers are fed in substreams to the reactors of the reactor cascade, and an anionic initiator and a rubber are fed at least to the first reactor, and where the reactor cascade is composed of back-mixing reactors.
    Type: Application
    Filed: April 15, 2004
    Publication date: December 30, 2004
    Inventors: Hermann Gausepohl, Jurgen Demeter, Philippe Desbois, Christian Schade
  • Patent number: 6825271
    Abstract: The invention relates to an anionically polymerised, impact-resistant polystyrene with a dispersed plasticiser phase, comprising particles with capsule particle morphology and method for production thereof.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: November 30, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Philippe Desbois, Christian Schade, Hermann Gausepohl
  • Patent number: 6689827
    Abstract: The invention relates to transparent, impact-resistant thermoplastic molding materials containing A) a matrix consisting of at least two different mixture components, B) an impact-resistance modifier, C) an additive, essentially consisting of c1) at least one 2,6-disubstituted phenol, and c21) at least one organic phosphite of general formula (I) P(OR1)n(OAr)3−n, c22 at least one organic phosphite of general formula (IIa) and/or (IIb), or c23) a mixture of compounds in accordance with c21) and c22).
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: February 10, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Rainer Neumann, Claudia Messinger, Klaus Benker, Armin Kurps
  • Patent number: 6686423
    Abstract: In a process for the anionic polymerization of vinylaromatic monomers or dienes in the presence of a lithium organyl or lithium alcoholate and a magnesium and/or an aluminum compound, a sterically hindered phenol or amine is added.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: February 3, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Philippe Desbois, Volker Warzelhan, Christian Schade, Michel Fontanille, Alain Deffieux, Stephane Menoret
  • Publication number: 20030139531
    Abstract: The invention relates to an anionically polymerised, impact-resistant polystyrene with a dispersed plasticiser phase, comprising particles with capsule particle morphology and method for production thereof.
    Type: Application
    Filed: November 7, 2002
    Publication date: July 24, 2003
    Inventors: Philippe Desbois, Christian Schade, Hermann Gausepohl
  • Patent number: 6531155
    Abstract: Granular materials are obtainable by pressing mixtures of at least one pulverulent, rheology-modifying, carboxyl-containing polymer as main component and at least one oil-soluble component.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: March 11, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Robert Heinz, Thekla Börs, Hans-Ulrich Wekel
  • Patent number: 6528575
    Abstract: The use of crosslinked copolymers obtainable by precipitation polymerization of monomer mixtures comprising (a) monoethylenically unsaturated C3-C8-carboxylic acids, their anhydrides or mixtures of said carboxylic acids and anhydrides, (b) compounds with at least 2 non-conjugated ethylenic double bonds in the molecule as crosslinkers and, where appropriate, (c) other monoethylenically unsaturated monomers which are copolymerizable with monomers (a) and (b), in the presence of free-radical polymerization initiators and from 0.1 to 20% by weight, based on the monomers used, of saturated, nonionic surface-active compounds, as stabilizer in oil-in-water emulsions in amounts of from 0.01 to 5% of the weight of the emulsions, and cosmetic and pharmaceutical formulations based on oil-in-water emulsions which contain said precipitation polymers.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: March 4, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Horst Westenfelder, Karin Sperling-Vietmeier, Axel Sanner, Hans-Ulrich Wekel
  • Patent number: 6518379
    Abstract: In a process for polymerizing dienes in a solvent comprising vinylaromatic monomers, the polymerization is carried out in the presence of a metal compound of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo or W as catalyst and a Lewis acid as cocatalyst and, if desired, an alkylating agent and, if desired, a regulator. This process can be used for preparing high-impact polystyrene, acrylonitrile-butadiene-styrene copolymers or methyl methacrylate-butadiene-styrene copolymers.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: February 11, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Stephan Jüngling, Christian Schade, Hermann Gausepohl, Volker Warzelhan, Rainer Moors, Hansjörg Schäch, Joachim Queisser, Gerrit Luinstra, Jürgen Demeter
  • Patent number: 6506846
    Abstract: A process prepares impact-modified thermoplastic molding compositions which comprise a soft phase made from a rubber dispersed in a hard matrix composed of vinylaromatic monomers, where the hard matrix is prepared by anionic polymerization in the presence of a metal alkyl compound or a metal aryl compound of an element of the second or third main group, or of the second subgroup, of the Periodic Table.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: January 14, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Hermann Gausepohl, Wolfgang Fischer, Rainer Moors, Volker Warzelhan
  • Patent number: 6444767
    Abstract: In a process for the homopolymerization of vinylaromatic monomers or the copolymerization of vinylaromatic monomers and dienes, the monomers are polymerized in the presence of at least one alkali metal organyl, at least one magnesium organyl and at least one aluminum organyl. The invention also provides an initiator composition for carrying out the process.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Wolfgang Fischer, Hermann Gausepohl, Rainer Klostermann, Volker Warzelhan, Michel Fontanille, Alain Deffieux, Philippe Desbois
  • Patent number: 6444762
    Abstract: A process for the continuous anionic polymerization or copolymerization of styrene or diene monomers using an alkali metal alkyl compound as polymerization initiator is carried out in the presence of an alkyl- or arylmetal compound of an element which occurs in at least divalent form as rate regulator, preferably under non-isothermal conditions and without back-mixing in a tubular or tube-bundle reactor, preferably using an alkyl- or arylmetal compound A of the formula R1M1 and an alkyl- or arylmetal compound B of the formula R2nM2 in a molar ratio between B and A of from 0.1:1 to 500:1, where M1 is Li, Na or K; R1 is hydrogen, C1-C20-alkyl, C6-C20-aryl, or C7-C20-alkyl-substituted aryl; M2 is an n-valent element from group 2a, 2b or 3a of the Periodic Table; and R2 is hydrogen, halogen, C1-C20-alkyl or C6-C20-aryl; and a special anionic polymerization initiator containing no Lewis base.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Fischer, Konrad Knoll, Wolfgang Loth, Volker Warzelhan, Alain Deffieux, Philippe Desbois, Michel Fontanille, Stefan Lätsch, Christian Schade, Hermann Gausepohl
  • Patent number: 6410654
    Abstract: An anionically polymerized impact-modified polystyrene has a yield stress of at least 24 MPa, measured at 23° C. to DIN 53455 and a hole impact strength of at least 11 kJ/m2, measured at 23° C. to DIN 53753, measured in each case on a specimen produced to ISO 3167. A preparation process is described.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: June 25, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Philippe Desbois, Christian Schade, Hermann Gausepohl, Volker Warzelhan
  • Patent number: 6399703
    Abstract: A process for preparing impact-modified styrene polymers (HIPS) omprises anionic polymerization of styrene in the presence of a rubber in one or more polymerization reactors in succession. The rubber is prepared in solution in an immediately upstream process. The heat of polymerization is utilized to remove the solvent for the rubber, this solvent having a boiling point lower than those of styrene and ethylbenzene, from at least one of the polymerization reactors via distillation with distillative cooling, and the solvent is reintroduced into the process of rubber preparation.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: June 4, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Fischer, Eugen-Walter Büchner, Axel Deimling, Hermann Gausepohl, Christian Schade
  • Patent number: 6353056
    Abstract: In a process for the preparation of block copolymers from vinylaromatic monomers and dienes, the monomers are polymerized in the presence of at least one alkali metal organyl or alkali metal alkoxide and at least one magnesium, aluminum or zinc organyl.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: March 5, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Konrad Knoll, Hermann Gausepohl, Volker Warzelhan, Christian Schade, Wolfgang Fischer
  • Patent number: 6350834
    Abstract: In a process for the homopolymerization of vinylaromatic monomers or the copolymerization of vinylaromatic monomers and dienes in the presence of at least one alkali metal compound and at least one compound of an element of group 3a of the Periodic Table of the elements, the compounds contain, based on the sum of molar equivalents of alkali metal and elements of group 3a, in each case a) from 0.1 to 3.9 molar equivalents of oxygen, sulfur, nitrogen or phosphorus and b) from 0.1 to 3.9 molar equivalents of an organyl ligand.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: February 26, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Wolfgang Fischer, Hermann Gausepohl, Konrad Knoll, Volker Warzelhan, Michel Fontanille, Alain Deffieux, Philippe Desbois
  • Patent number: 6329483
    Abstract: A copolymer obtainable by free-radical polymerization of A) 50-99.99% by weight of an olefinically unsaturated C3-C5 monocarboxylic acid, of an olefinically unsaturated C4-C8 dicarboxylic acid or the anhydride thereof or a mixture of such carboxylic acids or anhydrides with B) 0.01-50% by weight of an olefinically unsaturated quaternary ammonium compound of the formula I or II  where R1 is C6-C20-alkyl, C6-C20-alkenyl, C5-C8-cycloalkyl, phenyl, phenyl(C1-C12-alkyl) or (C1-C12-alkyl)phenyl, R2 is hydrogen, methyl or phenyl, R3 and R4 are each H or C1-C4-alkyl, X is halogen, C1-C4-alkoxysulfonyloxy or C1-C4-alkanesulfonate, it also being possible for the latter to occur as R3 or R4 with the formation of a betaine structure, Y is O or NH, and A is C1-C6-alkylene, or a mixture of such ammonium compounds, C) 0 to 49.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: December 11, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Axel Sanner, Hans-Ulrich Wekel, Franz Frosch, Horst Westenfelder
  • Patent number: 6303721
    Abstract: The anionic polymerization of dienes or copolymers of dienes and vinylaromatic monomers in a vinylaromatic monomer or monomer mixture to give homopolydienes or copolymers or mixed homopolydienes and copolymers is carried out in the presence of a metal alkyl or aryl of an element having a valence of at least two without addition of Lewis bases.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: October 16, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Lätsch, Wolfgang Fischer, Hermann Gausepohl, Volker Warzelhan, Christian Schade
  • Patent number: 6300441
    Abstract: Disclosed are a process for the preparation of an initiator composition comprising an alkali metal organyl and an aluminum organyl and a process for the polymerization of anionically polymerizable monomers.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: October 9, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Wolfgang Fischer, Hermann Gausepohl, Stephan Jüngling, Volker Warzelhan, Michel Fontanille, Alain Deffieux, Philippe Desbois
  • Patent number: 6165969
    Abstract: The use of polymers which comprise at least 5 mol % of quaternized 1-vinylimidazole units of the formula ##STR1## where R is C.sub.1 -C.sub.25 -alkyl, C.sub.5 -C.sub.10 -cycloalkyl or benzylR.sup.1,R.sup.2,R.sup.3 are identical or different and are H, CH.sub.3 and C.sub.2 H.sub.5, andX.sup..crclbar. is an anion,as color-fixing and color transfer-inhibiting additive to laundry aftertreatment aids and to detergents.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: December 26, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Bockh, Hans-Ulrich Jager, Jurgen Alfred Lux, Stefan Stein, Jurgen Detering, Christian Schade