Patents by Inventor Joachim Leyendecker

Joachim Leyendecker 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: 6291497
    Abstract: A fungicidal mixture comprises a) a phenyl benzyl ether derivative of the formula I.a, I.b or I.c,  and/or a carbamate of the formula Id where X is CH or N, n is 0, 1 or 2 and R is halogen, C1-C4-alkyl or C1-C4-haloalkyl, it being possible for the radicals R to be different if n is 2, or a salt or adduct thereof, and (b) a N-acetonylbenzamide of the formula II  where: R1 and R3 independently of one another are each halogen or C1-C4-alkyl; R2 is cyano, C1-C4-alkyl, C2-C4-alkenyl, C2-C4-alkynyl or C1-C4-alkoxy; R4 is hydrogen or C1-C4-alkyl; R5 is C2-C4-alkyl; R6 is thiocyano, isothiocyano or halogen, or a salt or adduct thereof, in a synergistically effective amount.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: September 18, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Schelberger, Maria Scherer, Hubert Sauter, Bernd Müller, Erich Birner, Joachim Leyendecker, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Reinhold Saur
  • Patent number: 6258801
    Abstract: A fungicidal mixture, comprising a) a carbamate of the formula I,  where T is CH or N, n is 0, 1 or 2 and R is halogen, C1-C4-alkyl or C1-C4-haloalkyl, and where the radicals R may be different if n is 2, and b) an active compund of the formula II, where: Y is hydrogen, a metal atom of the 1st to 3rd main group of the Periodic Table of the Elements or a group NR3R4R5R6; R2 is hydrogen, a C1-C18-alkyl group which may be substituted by halogen or a nitro group, a C2-C8-alkenyl or C2-C8-alkinyl group which may be substituted by halogen or a nitro group, a C1-C8-alkoxy-C1-C8-alkyl or a C2-C8-alkenyl-C1-C8-alkyl group, an unsubstituted or substituted aryl group having 6 to 14 carbons, a C3-C7-cycloalkyl group, a C1-C4-alkylaryl group or a heterocyclic group having 5 or 6 ring atoms and a hetero atom from the group consisting of N, O and S, where the heterocyclic group is attached directly or via an aliphatic chain to the oxygen atom, and R3-R6 independently of one anot
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: July 10, 2001
    Assignee: BASF Aktiengesellshcaft
    Inventors: Klaus Schelberger, Maria Scherer, Reinhold Saur, Hubert Sauter, Bernd Müller, Erich Birner, Joachim Leyendecker, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann
  • Patent number: 6245798
    Abstract: A fungicidal mixture, comprising a) a carbamate of the formula I,  in which X is CH or N, n is 0, 1 or 2 and Y is halogen, C1-C4-alkyl or C1-C4-haloalkyl, it being possible for the radicals Y to be different if n is 2, or a salt or adduct thereof, and b) an oxime ether carboxamide of the formula II  in which R represents hydrogen or halogen in a synergistically effective amount.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: June 12, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Schelberger, Reinhold Saur, Hubert Sauter, Bernd Müller, Erich Birner, Joachim Leyendecker, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann
  • Patent number: 6245792
    Abstract: A composition comprising effective amounts of a) a carbamate (I)  wherein T is CH or N, n is 0, 1 or 2, and R is halogen, C1-C4-al-kyl or C1-C4-haloalkyl, where the radicals R are identical or different if n is 2, and b) an azole (IV) as defined in the specification which exhibits a synergistically enhanced fungicidal effect is described.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: June 12, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Müller, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Reinhold Saur, Klaus Schelberger, Joachim Leyendecker
  • Patent number: 6239158
    Abstract: A composition comprising effective amounts of a) a carbamate of the formula I  where T is CH or N, n is 0, 1 or 2, and R is halogen, C1-C4-alkyl or C1-C4-haloalkyl, where the radicals R are identical or different if n is 2, and b) 1-(2-cyano-2-methoxyiminoacetyl)-3-ethylurea (III) H3CCH2—NHCONH—CO—C(CN)═NOCH3  (III)  which exhibits a synergistically enhanced fungicidal effect is described.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: May 29, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Müller, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Maria Scherer, Klaus Schelberger, Joachim Leyendecker
  • Patent number: 6194417
    Abstract: Fungicidal mixtures, comprising a) oxime ether of the formula I  where the substituents have the following meanings: X is oxygen or amino (NH); Y is CH or N; Z is oxygen, sulfur, amino (NH) or C1-C4-alkylamino (N—C1-C4-alkyl); R′ is C1-C6-alkyl, C1-C6-haloalkyl, C3-C6-alkenyl, C2-C6-haloalkenyl, C3-C6-alkynyl, C3-C6-haloalkynyl, C3-C6-cycloalkylmethyl, or is benzyl which can be partially or fully halogenated and/or can have attached to it one to three of the following radicals: cyano, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-halo-alkoxy and C1-C4-alkylthio; and/or b) a carbamate of the formula I,  where T is CH or N, n is 0, 1 or 2 and R is halogen, C1-C4-alkyl or C1-C4-haloalkyl, it being possible for the radicals R to be different when n is 2, and c) (±)-(2-chlorophenyl)(4-chlorophenyl)(pyrimidin-5-yl)methanol  in a synergistically active amount.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: February 27, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Ruth Müller, Herbert Bayer, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Klaus Schelberger, Dietrich Mappes, Joachim Leyendecker, Bernd Müller
  • Patent number: 6180638
    Abstract: A composition comprising effective amounts of a) a carbamate of the formula I where T is CH or N, n is 0, 1 or 2 and R is halogen, C1-C4-alkyl or C1-C4-haloalkyl, it being possible for the radicals R to be different if n is 2, and c) a compound III selected from the group consisting of the oxime ether carboxylate IIIa, the oxime ether carboxamide IIIb and the methoxyacrylate IIIc and optionally an oxime ether (II) and/or an azole (IV) as defined in the specification which exhibits a synergistically enhanced fungicidal effect is described.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: January 30, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd M{umlaut over (u)}ller, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Reinhold Saur, Klaus Schelberger, Joachim Leyendecker
  • Patent number: 6172094
    Abstract: A composition comprising effective amounts of a) a carbamate of the formula I where X is CH or N, n is 0, 1 or 2 and R is halogen, C1-C4-alkyl or C1-C4-haloalkyl, it being possible for the radicals R to be different if n is 2, and b) a dithiocarbamate (II) selected from the group consisting of manganese ethylenebis(dithiocarbamate) (zinc complex) (IIa), manganese ethylenebis(dithiocarbamate) (IIb), zinc ammoniate ethylenebis(dithiocarbamate) (IIc) and zinc ethylenebis(dithiocarbamate) (IId) and optionally c) 1-(2-cyano-2-methoxyiminoacetyl)-3-ethylurea (III) H3CCH2—NHCONH—CO—C(CN)═NOCH3  (III) which exhibits a synergistically enhanced fungicidal effect is described.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: January 9, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd M{umlaut over (u)}ller, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Maria Scherer, Klaus Schelberger, Joachim Leyendecker
  • Patent number: 6172063
    Abstract: A fungicidal mixture containing a) a carbamate of the formula I,  where X is CH or N, n is 0, 1 or 2 and R is halogen, C1-C4-alkyl or C1-C4-haloalkyl, it being possible for the radicals R to be different if n is 2, and b) a carboxamide II selected from the group consisting of the compounds IIa and IIb in a synergistically active amount is described.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: January 9, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd M{umlaut over (u)}ller, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Maria Scherer, Klaus Schelberger, Joachim Leyendecker
  • Patent number: 6166058
    Abstract: Fungicidal mixture comprising, as active components,a.sub.1) the oxime ether carboxylate of the formula Ia ##STR1## or a salt or adduct thereof, and/or a.sub.2) a carbamate of the formula Ib ##STR2## where X is CH or N, n is 0, 1 or 2 and R is halogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -haloalkyl, it being possible for the radicals R to be different if n is 2, or a salt or adduct thereof, andb) iminoctadine IIH.sub.2 N--C(.dbd.NH)--NH--(CH.sub.2).sub.8 --NH--(CH.sub.2).sub.8 --NH--C(.dbd.NH)--NH.sub.2 (II)or a salt or adduct thereof,in a synergistically active amount, and its use for controlling harmful fungi.
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: December 26, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Muller, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Klaus Schelberger, Maria Scherer, Manfred Hampel, Reinhold Saur, Joachim Leyendecker
  • Patent number: 6159992
    Abstract: The present invention relates to a fungicidal mixture which comprisesa) a carbamate of the formula I ##STR1## where X is CH and N, n is 0, 1 or 2 and R is halogen, C.sub.1 -C.sub.4 -alkyl and C.sub.1 -C.sub.4 -haloalkyl, it being possible for the radicals R to be different when n is 2, or a salt or adduct thereof, andb) an anilide of the formula II ##STR2## where R.sup.1 is fluorine or chlorine, or a salt or adduct thereof, in a synergistically active amount.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: December 12, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Muller, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Maria Scherer, Klaus Schelberger, Joachim Leyendecker
  • Patent number: 6156760
    Abstract: Fungicidal mixtures, comprisinga) an oxime ether of the formula I ##STR1## where the substituents have the following meanings: X is oxygen or amino (NH);Y is CH or N;Z is oxygen, sulfur, amino (NH) or C.sub.1 -C.sub.4 -alkylamino (N--C.sub.1 -C.sub.4 -alkyl);R' is C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -haloalkyl, C.sub.3 -C.sub.6 -alkenyl, C.sub.2 -C.sub.6 -haloalkenyl, C.sub.3 -C.sub.6 -alkynyl, C.sub.3 -C.sub.6 -haloalkynyl, C.sub.3 -C.sub.6 -Cycloalkylmethyl, or is benzyl which can be partially or fully halogenated and/or can have attached to it one to three of the following radicals: cyano, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -haloalkoxy and C.sub.1 -C.sub.4 -alkylthio and/orb) a carbamate of the formula II ##STR2## where T is CH or N, n is 0, 1 or 2 and R is halogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: December 5, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Ruth Muller, Herbert Bayer, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Klaus Schelberger, Maria Scherer, Joachim Leyendecker, Bernd Muller
  • Patent number: 6156778
    Abstract: This invention relates to a composition for controlling harmful fungi comprising, in a solid or liquid carrier,a) at least one carbamate of the formula I ##STR1## where X is CH or N andthe radicals R.sup.a and R.sup.b independently of one another are a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.4 -alkyl or a C.sub.1 -C.sub.4 -haloalkyl group; andb) at least one valine amide of the formula II ##STR2## where R.sup.1 is C.sub.3 -C.sub.4 -alkyl andR.sup.2 is naphthyl or phenyl, the phenyl radical being substituted in the 4-position by a halogen atom, a C.sub.1 -C.sub.4 -alkyl group or C.sub.1 -C.sub.4 -alkoxy group.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: December 5, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Ruth Muller, Herbert Bayer, Hubert Sauter, Karl Eicken, Frank Wetterich, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Maria Scherer, Klaus Schelberger, Bernd Muller, Joachim Leyendecker
  • Patent number: 6136802
    Abstract: Fungicidal mixtures, comprisinga) an oxime ether of the formula I ##STR1## where the substituents have the following meanings: X is oxygen or amino (NH);Y is CH or N;Z is oxygen, sulfur, amino (NH) or C.sub.1 -C.sub.4 -alkylamino (N--C.sub.1 -C.sub.4 -alkyl);R' is C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -haloalkyl, C.sub.3 -C.sub.6 -alkenyl, C.sub.2 -C.sub.6 -haloalkenyl, C.sub.3 -C.sub.6 -alkynyl, C.sub.3 -C.sub.6 -haloalkynyl, C.sub.3 -C.sub.6 -cycloalkylmethyl, or is benzyl which can be partially or fully halogenated and/or can have attached to it one to three of the following radicals: cyano, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -haloalkoxy and C.sub.1 -C.sub.4 -alkylthio and/orb) a carbamate of the formula II ##STR2## where T is CH or N, n is 0, 1 or 2 and R is halogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: October 24, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Ruth Muller, Herbert Bayer, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Reinhold Saur, Klaus Schelberger, Joachim Leyendecker
  • Patent number: 6136840
    Abstract: The present invention relates to a fungicidal mixture which comprisesa) a carbamate of the formula I: ##STR1## where X is CH and N, n is 0, 1 or 2 and R is halogen, C.sub.1 -C.sub.4 -alkyl and C.sub.1 -C.sub.4 -haloalkyl, it being possible for the radicals R to be different if n is 2, or a salt or adduct thereof, andb) tetrachloroisophthalonitrile II: ##STR2## in a synergistically active amount.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: October 24, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Muller, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Maria Scherer, Klaus Schelberger, Joachim Leyendecker
  • Patent number: 6133298
    Abstract: Fungicidal mixtures, comprising a) a carbamate of the formula I ##STR1## where T is CH or N, n is 0, 1 or 2 and R is halogen, C.sub.1 --C.sub.4 --alkyl or C.sub.1 --C.sub.4 --haloalkyl, it being possible for the radicals R to be different when n is 2, and/orb) an oxime ether of the formula II ##STR2## where X is oxygen or amino (NH);Y is CH or N;Z is oxygen, sulfur, amino (NH) or C.sub.1 --C.sub.4 --alkylamino (N--C.sub.1 --C.sub.4 --alkyl);R' is C.sub.1 --C.sub.6 --alkyl, C.sub.1 --C.sub.6 --haloalkyl, C.sub.3 --C.sub.6 --alkenyl, C.sub.2 --C.sub.6 --haloalkenyl, C.sub.3 --C.sub.6 --alkynyl, C.sub.3 --C.sub.6 --haloalkynyl, (C.sub.3 --C.sub.6 --cycloalkyl)methyl, or is benzyl which may be partially or fully halogenated and/or carry one to three of the following radicals: cyano, C.sub.1 --C.sub.4 --alkyl, C.sub.1 --C.sub.4 --haloalkyl, C.sub.1 --C.sub.4 --alkoxy, C.sub.1 --C.sub.4 --haloalkoxy and C.sub.1 --C.sub.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: October 17, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Muller, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Klaus Schelberger, Maria Scherer, Dietrich Mappes, Joachim Leyendecker, Herbert Bayer, Ruth Muller
  • Patent number: 6124336
    Abstract: Fungicidal mixtures, comprisinga.sub.1) a carbamate of the formula I ##STR1## where T is CH or N, n is 0, 1 or 2 and R is halogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -haloalkyl, it being possible for the radicals R to be different when n is 2, and/ora.sub.2) an oxime ether of the formula II ##STR2## where the substituents have the following meaning: X is oxygen or amino (NH);Y is CH or N;Z is oxygen, sulfur, amino (NH) or C.sub.1 -C.sub.4 -alkylamino (N--C.sub.1 -C.sub.4 -alkyl);R' is C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -haloalkyl, C.sub.3 -C.sub.6 -alkenyl, C.sub.2 -C.sub.6 -haloalkenyl, C.sub.3 -C.sub.6 -alkynyl, C.sub.3 -C.sub.6 -haloalkynyl, C.sub.3 -C.sub.6 -cycloalkyl-methyl, or benzyl which may be partially or fully halogenated and/or may carry one to three of the following radicals: cyano, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -haloalkoxy and C.sub.1 -C.sub.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: September 26, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Muller, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siefried Strathmann, Klaus Schelberger, Reinhold Saur, Joachim Leyendecker, Herbert Bayer, Ruth Muller, Maria Scherer
  • Patent number: 6090835
    Abstract: Fungicidal mixtures, comprisinga.1) a phenyl-benzylether of the formula I.a, I.b or I.c, ##STR1## or a.1) a carbamate of the formula I.d, ##STR2## where X is CH and N, n is 0, 1 or 2 and R is halogen, C.sub.1 -C.sub.4 -alkyl and C.sub.1 -C.sub.4 -haloalkyl, it being possible for the radicals R to be different when n is 2, andb) a dicarboximide-type fungicide (II)in a synergistically active amount.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: July 18, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Schelberger, Maria Scherer, Hubert Sauter, Manfred Hampel, Joachim Leyendecker, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Peter Irwin, Randall Evan Gold
  • Patent number: 6083970
    Abstract: Fungicidal mixtures, comprisinga.sub.1) at least one compound from the group selected from oxime ethers of the formula I ##STR1## where the substituents have the following meanings: X is oxygen or amino (NH);Y is CH or N;Z is oxygen, sulfur, amino (NH) or C.sub.1 -C.sub.4 -alkylamino (N--C.sub.1 -C.sub.4 -alkyl);R' is C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -haloalkyl, C.sub.3 -C.sub.6 -alkenyl, C.sub.2 -C.sub.6 -haloalkenyl, C.sub.3 -C.sub.6 -alkynyl, C.sub.3 -C.sub.6 -haloalkynyl, C.sub.3 -C.sub.6 -cycloalkylmethyl, or is benzyl which can be partially or fully halogenated and/or can have attached to it one to three of the following radicals: cyano, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -haloalkoxy and C.sub.1 -C.sub.4 -alkylthio;a.sub.2) carbamates of the formula II ##STR2## where T is CH or N, n is 0, 1 or 2 and R is halogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: July 4, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Ruth Muller, Herbert Bayer, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Klaus Schelberger, Maria Scherer, Joachim Leyendecker, Bernd Muller
  • Patent number: 6028093
    Abstract: Fungicidal mixtures, comprisinga) a carbamate of the formula I ##STR1## where T is CH or N, n is 0, 1 or 2 and R is halogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -haloalkyl, it being possible for the radicals R to be different when n is 2, and/orb) an oxime ether of the formula II, ##STR2## where the substituents have the following meanings: X is oxygen or amino;Y is CH or N;Z is oxygen, sulfur, amino or C.sub.1 -C.sub.4 -alkylaminoR' is C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -haloalkyl, C.sub.3 -C.sub.6 -alkenyl, C.sub.2 -C.sub.6 -haloalkenyl, C.sub.3 -C.sub.6 -alkynyl, C.sub.3 -C.sub.6 -haloalkynyl, C.sub.3 -C.sub.6 -cycloalkyl-methyl, or is benzyl which can be partially or fully halogenated and/or can have attached to it one to three of the following radicals: cyano, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -haloalkoxy and C.sub.1 -C.sub.4 -alkylthio; andc) a carbamate of the formula III(CH.sub.3).sub.2 N--CH.sub.2 CH.sub.2 CH.sub.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: February 22, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Muller, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Klaus Schelberger, Maria Scherer, Dietrich Mappes, Joachim Leyendecker, Herbert Bayer, Ruth Muller