Abstract: The present invention relates to a process for the arylation of olefins by reaction of haloaromatics or arylsulfonates with olefins in the presence of a palladium catalyst, a bulky nitrogen base and a salt.
Abstract: A process is provided for preparing N,N?-carbonyldiazoles by reacting azoles with phosgene in halogenated aliphatic hydrocarbon solvents, the entirety of the azole for reaction being introduced in the solvent, followed by the addition of phosgene.
Abstract: The present invention relates to compounds of transition metals with azo ligands, a process for their production, the use of these compounds as catalysts, a process for olefin (co)polymerization using these compounds, reaction products of these compounds with co-catalysts, the olefin (co)polymer, the use of these olefin (co)polymers for the production of molded parts, as well as molded parts that are produced from the olefin (co)polymers.
Abstract: The present invention relates to the preparation of nitrobenzoic acids by oxidizing particular nitrotoluenes, nitrobenzyl alcohols, esters and/or ethers in the presence of nitric acid at elevated temperature and elevated pressure. It has been found that the particular nitrotoluenes, nitrobenzyl alcohols, esters and/or ethers may be oxidized particularly reliably and in high yields using nitric acid to the benzoic acid derivatives when they are metered into the nitric acid.
Type:
Grant
Filed:
March 17, 2005
Date of Patent:
August 22, 2006
Assignee:
Bayer Aktiengesellschaft
Inventors:
Reinhard Langer, Lars Rodefeld, Karl Heinz Neumann
Abstract: The present invention relates to the preparation of nuclear-fluorinated aromatics by reacting, with a fluoride at 40 to 260° C., an aromatic compound substituted at the nucleus with halogen that is exchangeable for fluorine in the presence of at least one compound of the formula (I) where A, B, and Any have the meanings specified in the disclosure.
Type:
Grant
Filed:
June 12, 2002
Date of Patent:
August 15, 2006
Assignee:
Bayer Aktiengesellschaft
Inventors:
Marielouise Henrich, Albrecht Marhold, Alexander Kolomeitsev, Gerd Röschenthaler
Abstract: The present invention relates to a shaped article containing at least one peroxide curable compound containing a butyl-like polymer(s) without any conjugated aliphatic diene in its composition, said polymer containing less than 15 wt. % of solid matter insoluble in boiling cyclohexane under reflux for 60 min. The present invention also relates to a sealing material and a medical device containing at least one peroxide-curable compound containing a butyl-like polymer containing less than 15 wt. % of solid matter insoluble in boiling cyclohexane under reflux for 60 min. Further, the present invention relates to a process for producing a butyl-like polymer having no conjugated aliphatic diene in its composition and containing less than 15 wt. % of solid matter insoluble in boiling cyclohexane under reflux for 60 min.
Type:
Grant
Filed:
October 1, 2003
Date of Patent:
July 25, 2006
Assignee:
Lanxess, Inc.
Inventors:
Adam Gronowski, Akhtar Osman, Stephan Glander
Abstract: The present invention relates to a process for preparing novel, monodisperse ion exchangers having chelating functional groups, and their use for adsorbing metal compounds, in particular, heavy metal compounds and noble metal compounds, and also for extracting alkaline-earth metals from saline solutions from alkali metal chloride electrolysis.
Type:
Grant
Filed:
October 17, 2003
Date of Patent:
July 18, 2006
Assignee:
Bayer Aktiengesellschaft
Inventors:
Reinhold Klipper, Werner Strüver, Ulrich Schnegg, Bruno Hees, Bernhard Lehmann, Holger Lütjens
Abstract: The present invention relates to a method for the preparation of purified elastomers prepared by emulsion polymerization, wherein the level of impurity is reduced by up to 99 wt. %, expressed in terms of the unpurified elastomer. The present invention also relates to elastomers which can be obtained by the method according to the present invention, to the use of the elastomers for the production of all types of products, and to the product which is produced by processing the elastomer which can be obtained by the method according to the present invention.
Type:
Grant
Filed:
October 12, 2004
Date of Patent:
July 4, 2006
Assignee:
Bayer Aktiengesellschaft
Inventors:
Dirk Achten, Rafael Warsitz, Gregor Dudziak, Franz-Josef Mersmann, Stephen Pask, Zsolt Szentivanyi
Abstract: The present invention relates to catalysts comprising chiral monophosphorus compounds and their use, the chiral monophosphorus compounds themselves and also their precursors.
Type:
Grant
Filed:
September 27, 2002
Date of Patent:
June 6, 2006
Assignee:
Bayer Aktiengesellschaft
Inventors:
Claus Dreisbach, Benjamin Meseguer, Thomas Prinz, Ulrich Scholz, Hans-Christian Militzer, Friederike Agel, Birgit Drieβen-Hölscher
Abstract: The present invention relates to a process for preparing novel, monodisperse anion exchangers by (a) reacting monomer droplets made from monovinylaromatic compounds and polyvinylaromatic compounds, and optional porogens and/or initiators, (b) amidomethylating the resultant monodisperse, crosslinked bead polymers with phthalimide derivatives, (c) converting the amidomethylated bead polymers to aminomethylated bead polymers, and (d) alkylating the aminomethylated bead polymers.
Type:
Grant
Filed:
August 21, 2000
Date of Patent:
May 30, 2006
Assignee:
Bayer Aktiengesellschaft
Inventors:
Reinhold Klipper, Werner Strüver, Ulrich Schnegg, Rüdiger Seidel, Alfred Mitschker, Holger Lütjens
Abstract: The present invention relates to a process for preparing ?,?-difluoroamines, difluoromethylene-?,?-diazo compounds and fluorination reagents containing ?,?-difluoroamines and/or difluoromethylene-?,?-diazo compounds.
Type:
Grant
Filed:
January 5, 2004
Date of Patent:
May 16, 2006
Assignee:
Bayer Chemicals AG
Inventors:
Wolfgang Ebenbeck, Albrecht Marhold, Alexander Kolomeitsev, Gerd-Volker Röschenthaler
Abstract: The present invention relates to a process for producing polymers containing repeating units derived from at least one isoolefin monomer, optionally repeating units derived from at least one multiolefin monomer and optionally further copolymerizable monomers in the presence of a zinc compound and optionally an organic halide activator.
Abstract: This invention relates to a rubber mixture containing a carboxylated nitrile rubber, a metal salt of an acrylate, a liquid acrylate, a silane, optionally together with further additives, to a process for the production thereof and to use for moldings of all kinds, in particular roll coverings.
Abstract: The present invention relates to highly branched and coupled polymers based on conjugated dienes or on conjugated dienes and vinylaromatic compounds and on polyfunctional, organic compounds with at least four groups which are capable of coupling. Vulcanization products and shaped rubber articles of all types, in particular tires having an improved rolling resistance, can be produced from the highly branched diene polymers according to the present invention.
Type:
Grant
Filed:
September 11, 2003
Date of Patent:
April 25, 2006
Assignee:
Bayer Aktiengesellschaft
Inventors:
Michael Grün, Silvia Mücke, Claus Wrana
Abstract: The present invention relates to a polymer composite containing at least one carboxylated nitrile rubber polymer, that is optionally hydrogenated, at least one basic compound, at least one polyhalogenated hydrocarbon, optionally at least one filler and optionally at least one cross-linking agent, a process for preparing said polymer composite wherein at least one carboxylated nitrile rubber polymer, that is optionally hydrogenated, at least one basic compound, at least one polyhalogenated hydrocarbon, optionally at least one filler and optionally at least one cross-linking agent are mixed and a shaped article containing diester bridges formed by reaction of at least one carboxylated nitrile rubber polymer, that is optionally hydrogenated, at least one basic compound and at least one polyhalogenated hydrocarbon.
Type:
Grant
Filed:
June 22, 2004
Date of Patent:
April 18, 2006
Assignee:
Bayer Inc.
Inventors:
Frederic Guerin, Carl Walter Von Hellens, Sharon X. Guo
Abstract: The present invention relates to a process for the kinetic resolution of racemic functionalized epoxides in the presence of microorganisms, crude or pure preparations thereof comprising a polypeptide having epoxide hydrolase activity. Preferred microorganisms are yeasts and bacteria which may also be recombinant.
Inventors:
Christian Wandrey, Murillo De Oliveira Villela Filho, Andreas Liese, Jan A. M. De Bont, Jan C. Verdoes, Carel A. G. M. Weijers, J. Hans Visser, Claus Dreisbach
Abstract: The invention relates to a process for preparing colourless dibenzylamine by adding ammonium chlorides or amines to the industrially obtained dibenzylamine and subsequent distillation.
Abstract: The present invention provides a process for preparing a filled halobutyl elastomer, which includes mixing a halobutyl elastomer, particles of filler an additive containing both amino and alcohol functional groups, and one or more hydrated metal halogens and optional curing the filled elastomer with sulfur or other curative systems. The compositions of the present invention have improved properties when compared to known carbon black-filled halobutyl elastomeric compositions combined with an enhanced scorch safety. This present invention has the advantages of (a) not evolving alcohol either during the manufacture or subsequent use of the article manufactured from the compound, and (b) maintaining good processability of the compound.
Abstract: The present invention relates to silica-filled halogenated butyl elastomers, such as bromobutyl elastomers (BIIR) wherein the silica is surface-functionalized with a protein.
Type:
Grant
Filed:
May 9, 2003
Date of Patent:
January 31, 2006
Assignee:
Bayer Inc.
Inventors:
Rui Resendes, William Hopkins, John Rausa