Abstract: The present invention relates to polyol mixtures which are suitable for the preparation of rigid polyurethane foams and comprise addition products of alkylene oxide on aromatic di- or polyamines, and rigid foams prepared with these polyol mixtures.
Type:
Grant
Filed:
October 10, 2001
Date of Patent:
July 1, 2003
Assignee:
Bayer Aktiengesellschaft
Inventors:
Karl-Werner Dietrich, Torsten Heinemann, Manfred Dietrich
Abstract: The present invention provides the use of impact resistant, stress cracking resistant copolycarbonates with particularly good low temperature properties for applications in which particularly good low temperature properties are required, e.g., for automobile construction or external applications, and new copolycarbonates themselves.
Abstract: The invention relates to microcapsules for which the walls comprise reaction products of polyisocyanates with guanidine compounds and amines.
Abstract: The invention relates to double-metal cyanide (DMC) catalysts for preparing polyether polyols by the polyaddition of alkylene oxides on to starter compounds containing active hydrogen atoms, wherein the DMC catalysts are composed of: a) at least one DMC compound; b) at least one organic complexing ligand which is not a coronand; and c) at least one coronand. The DMC catalysts of the present invention have increased activity compared to known catalysts.
Type:
Grant
Filed:
August 28, 2002
Date of Patent:
July 1, 2003
Assignee:
Bayer Aktiengesellschaft
Inventors:
Walter Schäfer, Jörg Hofmann, Pieter Ooms
Abstract: Substituted tetrahydro-naphthalenes and analogous compounds are prepared by reducing or condensing appropriate functional substituents in substituted tetrahydro-naphthalenes and analogous compounds by customary methods and converting functional groups in this manner into the desired groups. The compounds according to the invention are suitable for use as active compounds in pharmaceuticals, in particular in pharmaceuticals for treating arteriosclerosis and also dyslipidaemias.
Type:
Grant
Filed:
March 17, 2000
Date of Patent:
July 1, 2003
Assignee:
Bayer Aktiengellschaft
Inventors:
Arndt Brandes, Michael Lögers, Jürgen Stoltefuss, Gunter Schmidt, Klaus-Dieter Bremm, Hilmar Bischoff, Delf Schmidt, Stefan Antons, Holger Paulsen, Stephan Nicholas Müller, Paul Naab, Carsten Schmeck
Abstract: This invention relates to novel double metal cyanide (DMC) catalysts for the production of polyether polyols by polyaddition of alkylene oxides onto starter compounds having active hydrogen atoms, wherein the catalyst contains a) double metal cyanide compounds, b) organic complex ligands other than c) and c) ionic surface- or interface-active compounds. The catalysts according to the invention have greatly increased activity in the production of polyether polyols.
Type:
Grant
Filed:
August 8, 2001
Date of Patent:
July 1, 2003
Assignee:
Bayer Aktiengesellschaft
Inventors:
Jörg Hofmann, Pieter Ooms, Pramod Gupta, Walter Schäfer, John Lohrenz
Abstract: The present invention relates to blocked polyisocyanate cross-linking agents and their use in one-component stoving lacquers, in particular in solvent-containing or predominantly water-based plastics coatings having a soft-feel effect.
Abstract: The present invention is directed to a method for impregnating at least one geofabric with a liquid solidifiable polyurethane composition, conforming at least one polyurethane-impregnated geofabric to a surface (such as to the surface of a canal, ditch and/or pipe) and allowing the liquid solidifiable polyurethane composition to cure and form a polyurethane/geofabric composite. The liquid solidifiable polyurethane composition is the reaction product of COMPONENT A, COMPONENT B and COMPONENT C, as defined herein. COMPONENT C has the same equivalent weight as COMPONENT B and contains catalyst. One advantage of the present invention is that the ratio of COMPONENT B to COMPONENT C can be adjusted during processing without changing the isocyanate index. As a result, geltimes of liquid solidifiable polyurethane compositions of the present invention can be adjusted to accommodate changes in outdoor application temperature.
Type:
Grant
Filed:
May 3, 2002
Date of Patent:
June 24, 2003
Assignees:
Bayer Corporation
Inventors:
Peter H. Markusch, Ralf Guether, LeRoy Payne
Abstract: Thermoplastic moulding composition comprising at least 2 components chosen from the group consisting of aromatic poly(ester)carbonates, graft polymers of one or more vinyl monomers on one or more graft bases having a glass transition temperature of <10° C., thermoplastic vinyl (co)polymer and polyalkylene terephthalate and 0.5 to 20 parts by wt. phosphorus compound of the general formula (I).
Type:
Grant
Filed:
May 16, 2001
Date of Patent:
June 24, 2003
Assignee:
Bayer Aktiengesellschaft
Inventors:
Thomas Eckel, Dieter Wittmann, Jörn Stölting, Michael Zobel
Abstract: The invention relates to an aqueous 2-component polyurethane (PU) coating composition comprising a vinyl polymer polyol dispersion, having a hydroxyl number between 10 and 264 mg KOH/g solid resin, an acid value (calculated from the sum of neutralized and non-neutralized acid groups) between 0 and 55 mg KOH/g solid resin, a number-average molecular weight Mn of at least 5000 g/mol and a weight average molecular weight Mw of at least 30,000 g/mol, a glass transition temperature of at least 20° C. and an average particle diameter of no greater than 300 nm, which is prepared in the presence of 0.1 to 10.0 wt. %, relative to the sum of the solids contents of polymer polyol and polyisocyanate, of a non-ionic polyether surfactant and a polyisocyanate having a viscosity at 23° C. of no more than 12,000 mPa*s and either a non-hydrophilic or a non-ionically or anionically hydrophilic character, whereby the equivalent ratio of isocyanate groups of component b) to hydroxyl groups of component a) is 0.
Type:
Grant
Filed:
August 30, 2001
Date of Patent:
June 24, 2003
Assignee:
Bayer Aktiengesellschaft
Inventors:
Joachim Probst, Erhard Lühmann, Horst Clemens, Wolfgang Kremer, Jürgen Meixner, Hans-Josef Laas
Abstract: The present invention relates to a process for the continuous isothermal preparation of mononitrotoluenes with concentration of the resultant waste sulfuric acid and recycling of the concentrated waste sulfuric acid to the process.
Type:
Grant
Filed:
October 26, 2001
Date of Patent:
June 24, 2003
Assignee:
Bayer Aktiengesellschaft
Inventors:
Ralf Demuth, Frank Döbert, Harald Petersen, Georg Ronge, Hans-Martin Weber, Thomas Würminghausen, Eberhard Zirngiebl
Abstract: The pot life of an isocyanate formulation is controlled by including a chain extender having (a) at least two secondary amine groups, (b) no primary amine groups, and (c) a reactivity low enough that the chain extender will not react sufficiently with isocyanate groups present in the isocyanate formulation to increase the viscosity of the isocyanate formulation to more than 2000 mPa·s within 5 seconds in the isocyanate formulation.
Type:
Grant
Filed:
July 2, 2002
Date of Patent:
June 24, 2003
Assignee:
Bayer Corporation
Inventors:
Rick L. Adkins, William E. Slack, Edward P. Squiller
Abstract: The invention relates to thermoplastic copolycarbonate compositions and moulded parts containing the latter having improved stress cracking resistance and thermal stability.
Type:
Grant
Filed:
September 24, 2001
Date of Patent:
June 24, 2003
Assignee:
Bayer Aktiengesellschaft
Inventors:
Holger Warth, Thomas Eckel, Dieter Wittmann, Silke Kratschmer
Abstract: The instant invention provides for proteins, polypeptides, nucleic acid sequences, constructs, expression vectors, host cells, pharmaceutical compositions of, and methods for using human placental bikunin, serine protease inhibitor domains, and fragments thereof.
Type:
Grant
Filed:
August 31, 1998
Date of Patent:
June 24, 2003
Assignee:
Bayer Corporation
Inventors:
Paul P. Tamburini, Gary Davis, Katherine A. Delaria, Christopher W. Marlor, Daniel K. Muller
Abstract: The invention provides modifiers for the anionic polymerization of conjugated dienes or of conjugated dienes with vinylaromatic compounds, wherein the modifiers are specific aminoethers.
Type:
Grant
Filed:
November 6, 2001
Date of Patent:
June 24, 2003
Assignee:
Bayer Aktiengesellschaft
Inventors:
Michael Grün, Thomas Knauf, Wilfried Braubach
Abstract: The invention relates to a novel process for preparing optically active trimethyllactic acid and/or its esters by catalytic hydrogenation of trimethylpyruvic acid and/or its esters in the presence of noble metal complex catalysts containing phosphorus ligands.
Abstract: A device and method for seed-train expansion of a source of mammalian cells and their use in production of proteins expressed by the cells comprising the use of a dedicated inoculation bioreactor for expanding the cells prior to the transfer to a production bioreactor is disclosed.
Abstract: Trifluoromethyl-substituted biphenylcarboxylic acids are prepared by converting methyl-substituted biphenylcarbonitriles into the corresponding trichloromethyl-substituted biphenylcarbonitriles, converting the trichloromethyl group thereof to a trifluoromethyl group and thus obtaining trifluoromethyl-substituted biphenylcarbonitriles, and preparing the corresponding carboxylic acids therefrom by hydrolysis. A number of intermediates arising during this are novel compounds.
Type:
Grant
Filed:
August 9, 2002
Date of Patent:
June 17, 2003
Assignee:
Bayer Aktiengesellschaft
Inventors:
Peter Müller, Albrecht Marhold, Karen Peilstöcker
Abstract: The invention provides rubber mixtures of at least one double bond-containing rubber, rubber gels and additives of inorganic peroxides and also optionally further fillers and rubber auxiliary substances.
Rubber mixtures according to the present invention are characterized in the uncrosslinked state by good processability (compound viscosity ML 1+4/100° C.<60 ME) and in the vulcanized state by improved mechanical properties in particular with regard to the product of the modulus at 100% extension and the elongation at break (S100×D) and also by improved tensile strengths. In addition, vulcanizates prepared from rubber mixtures according to the present invention have a relatively low density, which has an advantageous effect on the weight of the rubber molded items prepared from the rubber mixtures.
The vulcanizates are suitable for producing industrial rubber articles and for tire components.