Abstract: The invention relates to a process for the continuous preparation of melt-processable polyurethanes, wherein an isocyanate-terminated prepolymer is intensively mixed with chain extender at temperatures of <200° C., and the mixture obtained is converted to melt processable polyurethane in a twin screw extruder under quasi-adiabatic reaction conditions.
Type:
Grant
Filed:
August 27, 1998
Date of Patent:
September 25, 2001
Assignee:
Bayer AG
Inventors:
Wolfgang Bräuer, Friedemann Müller, Jürgen Winkler, Herbert Heidingsfeld
Abstract: The present invention relates to a new catalyst based on allyl complexes of the rare earths, of general formula
[(C3R15)rM1(X)2−r(D)n]+[M2(X)p(C6H5−qR2q)4−p]− (I),
to the preparation of this new catalyst, and to its use for the polymerization of unsaturated compounds, particularly of conjugated dienes, in solution and in the gas phase.
Type:
Grant
Filed:
May 7, 1998
Date of Patent:
September 4, 2001
Assignee:
Bayer AG
Inventors:
Heike Windisch, Gerd Sylvester, Rudolf Taube, Steffen Maiwald
Abstract: Electroluminescent assemblies containing a substrate, an anode, an electroluminescent element and a cathode, where at least one of the two electrodes is transparent in the visible spectral region and the electroluminescent element can contain in order: a hole injection zone, hole transport zone, electroluminescent zone, electron transport zone and/or an electron injection zone, characterized in that the hole injection and hole transport zone is a substituted or unsubstituted 1,3,5-tris(aminophenyl)benzene compound A or a mixture thereof and the electroluminescent element may, if desired, contain a further functionalized compound selected from the group consisting of hole transport materials, a luminescent material B and, if desired, electron transport materials, where the hole injection and hole transport zone can contain, in addition to the component A, one or more further hole transport compounds, where at least one zone is present, individual zones can be left out and the zone(s) present can assume a plura
Type:
Grant
Filed:
March 20, 1999
Date of Patent:
August 21, 2001
Assignee:
Bayer AG
Inventors:
Friedrich Koch, Helmut Werner Heuer, Rolf Wehrmann, Martin Deussen, Andreas Elschner
Abstract: The invention relates to novel substituted 2,4-diamino-1,3,5-triazines of the formula (I)
In which
R1 represents hydrogen or optionally substitued alkyl,
R2 represents formyl or represents in each case optionally substituted alkylcarbonyl, alkoxycarbonyl, alkylsulphonyl, arylcarbonyl or arylsulphonyl,
R3 represents in each case optionally substituted alkyl or cycloalkyl,
R4 represents hydrogen or alkyl,
A represents oxygen or methylene,
Ar represents in each case optionally substituted aryl or heterocyclyl, and
z represents hydrogen, hydroxyl, cyano, nitrogen, halogen or represents in each case optionally substituted alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylthio, alkylsulphinyl, alkylsulphonyl, alkenyl or alkinyl,
(except for three prior-art compounds),
to processes and to novel intermediates for preparation of the novel compounds and to their use as herbicides.
Type:
Grant
Filed:
April 7, 1999
Date of Patent:
August 7, 2001
Assignees:
Bayer AG, Nihon Bayer Agrochem K.K.
Inventors:
Hans-Jochem Riebel, Stefan Lehr, Uwe Stelzer, Yukiyoshi Watanabe, Markus Dollinger, Toshio Goto
Abstract: A process is disclosed for coloring building materials with inorganic pigments in the form of microgranulates. The granulates comprise one or more pigments and one or more compounds selected from boron, aluminum, silicon, titanium, zinc and tin.
Abstract: Thermoplastic moulding compounds containing
A) 30 to 99 parts by wt. of polyalkyleneterephthalate
B) 0 to 50 parts by wt. of polycarbonate
C) 0 to 30 parts by wt. of a graft polymer
D) 0.1 to 20 parts by wt. of an oligomeric phosphorus compound of the formula (Ia)
or 0.1 to 20 parts by weight of a mixture of an oligomeric phosphorus compound of the formula (Ia) and a phosphorus compound of the formula (Ib)
where the amount of phosphorus compound of the formula (Ib) in the mixture of phosphorus compounds is 1 to 50% by weight (relative to 100% by weight of phosphorus compound of the formula (Ia) and (Ib),
E1) 1 to 60 parts by wt. of mineral filler and
E2) 0 to 30 parts by wt. of fillers and reinforcing materials which differ from E1).
Type:
Grant
Filed:
July 29, 1996
Date of Patent:
July 31, 2001
Assignee:
Bayer AG
Inventors:
Herbert Magerstedt, Georg Heger, Karsten-Josef Idel, Friedemann Paul
Abstract: This invention relates to (co)polymers which contain at least one repeat chain unit of the general formula (1) or (2) and optionally contain repeat units of the general formula (3)
in which
L1 and L2 mean a photoluminescent residue,
wherein the proportion of structural units of the formulae (1) and/or (2) is in each case 0.5 to 100 mol. %, and (3) 0 to 99.5 mol. %, and the molar percentages add up to 100,
to the use thereof for the production of electroluminescent devices and to the electroluminescent devices.
Type:
Grant
Filed:
February 9, 1996
Date of Patent:
June 19, 2001
Assignee:
Bayer AG
Inventors:
Yun Chen, Rolf Wehrmann, Andreas Elschner, Ralf Dujardin
Abstract: The present invention provides a process for removal of excess dye from newly manufactured printed or dyed fabric or yarn, comprising treatment with a rinse liquor comprising at least one enzyme selected from the group consisting of enzymes exhibiting peroxidase activity or laccase activity, an oxidation agent, and at least one mediator selected from the group consisting of aliphatic, cyclo-aliphatic, heterocyclic or aromatic compounds containing the moiety >N—OH, in particular 1-hydroxybenzotriazole.
Abstract: D-mannitol having a specific surface area of not less than about 1 m2/g is disclosed. The D-mannitol shows improved compressibility and is useful as an excipient.
Type:
Grant
Filed:
October 23, 1998
Date of Patent:
May 22, 2001
Assignees:
Takeda Chemical Industries, Ltd., Bayer AG
Inventors:
Tomohiro Yoshinari, Fritz Schueckler, Norbert Poellinger, Shinji Maegata
Abstract: Thermoplastic materials containing
A) 5 to 80 parts by weight of a thermoplastic co- or terpolymer made from the monomers styrene, &agr;-methylstyrene, methyl methacrylate, acrylonitrile with an average molecular weight ({overscore (M)}w) of 70,000 to 119,000,
B) 1 to 30 parts by weight of a thermoplastic copolymer made from 60 to 95% by weight of styrene and/or &agr;-methylstyrene and 40 to 5% by weight of acrylonitrile with an average molecular weight ({overscore (M)}w) of 25,000 to 49,500,
C) 0.1 to 10 parts by weight of a thermoplastic co- or terpolymer made from the monomers styrene, &agr;-methylstyrene, methyl methacrylate, acrylonitrile with an average molecular weight ({overscore (M)}w) of 1,500 to 6,000 and
D) 0.5 to 50 parts by weight of a particulate rafted rubber with a glass transition temperature ≦10° C. and an average particle diameter (d50) of 0.05 to 0.
Type:
Grant
Filed:
June 20, 1994
Date of Patent:
May 8, 2001
Assignee:
Bayer AG
Inventors:
Herbert Eichenauer, Karl-Heinz Ott, Dieter Wittmann, Alfred Pischtschan
Abstract: Glass-fiber-reinforced ABS molding compounds containing up to 5% by weight of a tin-containing organic compound corresponding to formula (I) and/or (II)
in which
R1 and R2=C1-12 alkyl,
R3, R4=C1-18 alkyl,
R5=—(CH2)—n, —CH═CH—, —CH═CR1—,
X=H, 1 equivalent of an alkali metal, preferably Na or K, ½ equivalent of an alkaline earth metal, preferably Mg or Ca,
n=2-8.
Type:
Grant
Filed:
October 23, 1998
Date of Patent:
April 3, 2001
Assignee:
Bayer AG
Inventors:
Alfred Pischtschan, Herbert Eichenauer, Horst Peters
Abstract: A coolant containing 35-65 wt. % polyethylene glycol and 65-35 wt. % ethylene glycol, which is especially useful for cooling motor vehicle engines.
Type:
Grant
Filed:
April 3, 1998
Date of Patent:
March 27, 2001
Assignee:
Bayer AG
Inventors:
Aziz El Sayed, Detlev Joachimi, Hartwig Meier, Karsten-Josef Idel
Abstract: The present invention relates to a method for manufacturing transition metal carbides and/or transition metal carbonitrides and the use thereof together with novel transition metal xerogels.
Type:
Grant
Filed:
April 27, 1998
Date of Patent:
March 6, 2001
Assignee:
Bayer AG
Inventors:
Hermann-Jens Womelsdorf, Gerd Passing, Nils Perchenek
Abstract: The invention relates to the use of polyaspartic acids and their mixtures with surfactants and emulsifiers for inhibiting or delaying deposit formation by sparingly soluble organic and inorganic components in the feed of a process that uses a membrane.
Type:
Grant
Filed:
May 10, 1999
Date of Patent:
February 13, 2001
Assignee:
Bayer AG
Inventors:
Wolfgang Zarges, Torsten Groth, Winfried Joentgen, Andreas Gröschl
Abstract: The invention relates to a method for carrying out polycondensation reactions, according to which the polycondensation of a monomeric starting material is carried out with external supply of heat in a reactor combination which has at least two stages and is composed of a pre-reactor and a high-viscosity reactor, where the low-molecular-weight elimination products produced are removed by evaporation. In the pre-reactor, the reaction product is concentrated to give a high-viscosity preliminary product. The high-viscosity preliminary product is then fed to the high-viscosity reactor, in which it reacts to completion with simultaneous introduction of thermal and mechanical energy and with a residence time of from 20 s to 60 min to give a polycondensation product.
Type:
Grant
Filed:
August 13, 1999
Date of Patent:
February 13, 2001
Assignee:
Bayer AG
Inventors:
Paul Wagner, Frank Döbert, Thomas Menzel, Torsten Groth, Winfried Joentgen, Ulrich Liesenfelder, Jörgen Weinschenck, Klaus-Peter Heise
Abstract: The rubber mixtures containing modified rubber gels according to the invention prepared from at least one rubber gel modified with compounds containing sulphur and reactive towards C═C double bonds and at least one rubber containing double bonds are preferable suitable for the production of vulcanizates which have an unusually strong reinforcing action in rubber vulcanizates. The vulcanisates furthermore exhibit unusually low dynamic damping at relatively elevated temperatures. They are thus particularly suitable for the production of low rolling resistance motor vehicle tire treads.
Type:
Grant
Filed:
January 14, 1998
Date of Patent:
February 6, 2001
Assignee:
Bayer AG
Inventors:
Werner Obrecht, Thomas Scholl, Ulrich Eisele, Winfried Jeske
Abstract: The present invention relates to iron oxide red pigments, a process for the production of iron oxide red pigments by calcining iron oxide yellow pigments or iron oxide black pigments, and the use thereof.
Abstract: The invention relates to the production of polyaspartic acid homo- and copolymers by biotechnological processes and to the use of the resulting products (for influencing the crystallization or agglomeration behavior of sparingly soluble salts or solids in aqueous systems).
Type:
Grant
Filed:
September 2, 1999
Date of Patent:
January 30, 2001
Assignee:
Bayer AG
Inventors:
Winfried Joentgen, Torsten Groth, Alexander Steinb{umlaut over (u)}chel, Tran Hai, Fred Bernd Oppermann
Abstract: A process for coating substrates with a silicon-containing protective layer by chemical vapor deposition with a silicon-containing compound of the structural formula (1):
in which
R1 is an alkyl group having 1 to 4 carbon atoms, and
R2 is hydrogen or an alkyl group having 1 to 4 carbon atoms.
Abstract: Highly branched polyisoolefines are produced according to the invention by the polymerization of isoolefines in a single-stage process, in solution, suspension or in the gas phase in the presence of bifunctional monomers which contain at least one group capable of cationic polymerization and at least one group which serves as an initiator for the cationic polymerization of isoolefines (inimer), at temperatures from +20 to -100.degree. C., optionally in the presence of inert, organic solvents, and in the presence of alkylalumoxanes (coinitiator).
Type:
Grant
Filed:
July 7, 1997
Date of Patent:
December 5, 2000
Assignee:
Bayer AG
Inventors:
Gerhard Langstein, Werner Obrecht, Judit Eva Puskas, Oskar Nuyken, Karin Weiss