Patents Assigned to Hoechst AG
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Patent number: 5741931Abstract: Phosphepinium Salts ThereofThe present invention relates to phosphonium salts of the formula (I) ##STR1## in which Ar--Ar is a biphenyl radical, a 1-phenylnaphthyl radical or a 1,1'-binaphthyl radical, each CH.sub.2 group is arranged in the ortho position to the Ar--Ar bond, R is F, an alkyl radical or an alkoxy radical respectively having 1 to 8 carbon atoms, n is an integer from 0 to 4, R.sup.1 and R.sup.2 are identical or different and, independently of each other, are an alkyl radical having 1 to 10 carbon atoms, a cycloaliphatic radical having 5 to 10 carbon atoms, or are a radical Ar.sup.1 --(R.sup.3).sub.m, where Ar.sup.1 is a phenyl or naphthyl radical, R.sup.3 is F, Cl, CF.sub.3, SO.sub.3 H, SO.sub.3 Me (Me.dbd.Li, Na or K), a dialkylamino radical having 2 to 8 carbon atoms, an alkyl radical or an alkoxy radical respectively having 1 to 8 carbon atoms and m is an integer from 0 to 5, or R.sup.1 and R.sup.Type: GrantFiled: June 7, 1995Date of Patent: April 21, 1998Assignee: Hoechst AGInventors: Christoph Naumann, Dieter Regnat
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Patent number: 5739304Abstract: Water-soluble polysaccharides which containa) substituents selected from the group consisting of alkyl, hydroxyalkyl, carboxyalkyl and sulfoalkyl,b) N,N-disubstituted aminoalkyl groups,are prepared by alkylation of a polysaccharide in the presence of a base with one or more alkylation reagents, selected from the group consisting of compounds transferring alkyl groups, compounds transferring hydroxyalkyl groups, compounds transferring carboxyalkyl groups and compounds transferring sulfoalkyl groups, and also with an N,N-disubstituted amino-alkylsulfuric acid ester. The modified polysaccharides are used in paper production and waste-water purification and also in cosmetics.Type: GrantFiled: December 22, 1995Date of Patent: April 14, 1998Assignee: Hoechst AGInventors: Reinhard Doenges, Rudolf Ehrler, Andreas Schrell
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Patent number: 5736603Abstract: The invention relates to electrically conductive thermoplastic composite materials which have specific volume resistances of less than 10.sup.9 ohm cm and comprise 0.1 to 70% by volume of electrically conductive fibers impregnated with a thermoplastic elastomer, to a process for their preparation and to their use.Type: GrantFiled: August 14, 1995Date of Patent: April 7, 1998Assignee: Hoechst AGInventors: Bernhard Pfeiffer, Joachim Heydweiller, Josefa Risch
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Patent number: 5731365Abstract: The present invention relates to hydrophilic, highly swellable hydrogels which are coated with non-reactive, water-insoluble film-forming polymers.Type: GrantFiled: July 19, 1995Date of Patent: March 24, 1998Assignee: Hoechst AGInventors: Fritz Engelhardt, Norbert Herfert, Uwe Stuven, Ulrich Riegel, Rudiger Funk, Detlev Seip
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Patent number: 5728886Abstract: Phosphines of the formula (I) and the preparation of these phosphines ##STR1## where Ar--Ar is a biphenyl radical, a 1-phenylnaphthyl radical or a 1,1'-binaphthyl radical, the CH.sub.2 group and the CH.sub.3 radical are each in the ortho position to the Ar--Ar bond, R is F, an alkyl radical or alkoxy radical each having from 1 to 8 carbon atoms, n is an integer from 0 to 4, R.sup.1 and R.sup.2 independently of one another, are an alkyl radical having from 1 to 10 carbon atoms, a cycloaliphatic radical having from 5 to 10 carbon atoms, or a radical Ar.sup.1 -(R.sup.3).sub.m, where Ar.sup.1 is a phenyl or naphthyl radical, R.sup.3 is F, Cl, CF.sub.3, SO.sub.3 H, SO.sub.3 Me (Me=Li, Na or K), a dialkylamino radical having from 2 to 8 carbon atoms, an alkyl radical or alkoxy radical each having from 1 to 8 carbon atoms and m is an integer from 0 to 5, or R.sup.1 and R.sup.2 together with the phosphorus atom form a 4-membered to 8-membered ring to which can be fused.Type: GrantFiled: August 3, 1995Date of Patent: March 17, 1998Assignee: Hoechst AGInventors: Christoph Naumann, Dieter Regnat
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Patent number: 5726333Abstract: The invention relates to an organometallic compound of the formula I, ##STR1## where M is a tetravalent metal, L are, independently of one another, identical or different and are each a .pi. ligand, T are, independently of one another, identical or different and are each a bridge and A are, independently of one another, identical or different and are each a .pi. ligand or another electron donor.Type: GrantFiled: July 10, 1995Date of Patent: March 10, 1998Assignee: Hoechst AGInventors: Hans-Friedrich Herrmann, Frank Kuber, Michael Aulbach, Wolfgang Anton Herrmann, Marc Morawietz
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Patent number: 5719095Abstract: The invention relates to a process for the preparation of a catalyst system supported on a support. The catalyst system is built up from at least one catalyst and at least one cocatalyst. The catalyst and the cocatalyst supported on a support material are brought into contact in a suspension solution. The fixing of the catalyst to the support is carried out under the action of microwaves.Type: GrantFiled: February 10, 1994Date of Patent: February 17, 1998Assignee: Hoechst AGInventors: Michael-Joachim Brekner, Bernd Bachmann, Frank Osan, Klaus Alberti, Andreas Winter
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Patent number: 5710330Abstract: Process for preparing alkanephosphonic anhydrides of the formula (I) ##STR1## where R is straight-chain or branched unsubstituted C.sub.1 -C.sub.6 -alkyl and n.gtoreq.3, which comprises pyrolytically eliminating water from an alkanephosphonic acid of the formula (II) or a pyroalkanephosphonic acid of the formula (III) ##STR2## where R is straight-chain or branched C.sub.1 -C.sub.6 -alkyl, without addition of solvent and removing the water from the reaction mixture by means of an inert gas stream.Type: GrantFiled: November 2, 1995Date of Patent: January 20, 1998Assignee: Hoechst AGInventors: Carl Christoph Mollenkopf, Ernst Ingo Leupold, Gunter Roscher
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Patent number: 5708077Abstract: Production of low-emission dispersion paints, coating materials and synthetic resin dispersion plasters in the form of aqueous preparations based on aqueous synthetic resin dispersion copolymers derived from olefinically unsaturated monomers, having a pigment volume concentration (PVC) of at least 60% and containing water, fillers, pigments, synthetic resin dispersion copolymers and conventional auxiliaries, wherein the synthetic resin dispersion copolymers have a content of 0.05 to 2% by weight of monomer units derived from special unsaturated hydrolyzable organic silicon compounds and the aqueous copolymer dispersions possess a minimum film-forming temperature (MFT) of <10.degree. C. preferably <5.degree. C.and especially <2.degree. C., the aqueous preparations according to the invention contain <0.1% by weight of volatile non-aqueous constituents, based on the total non-volatile part of the preparations, and the pH of the aqueous preparations is in the range from 5.5 to 10.Type: GrantFiled: November 15, 1996Date of Patent: January 13, 1998Assignee: Hoechst AGInventors: Ernst Nolken, Helmut Braun, Michael Lonitz
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Patent number: 5698755Abstract: The invention relates to a process for preparing monofunctional, bifunctional or polyfunctional aromatic olefins of the formula (I) ##STR1## by reaction of haloaromatics of the formula (II) ##STR2## with olefins of the formula (III) ##STR3## , wherein a palladium compound of the formula (IV) ##STR4## is used as the catalyst.Type: GrantFiled: June 21, 1995Date of Patent: December 16, 1997Assignee: Hoechst AGInventors: Matthias Beller, Hartmut Fischer, Wolfgang Anton Herrmann, Christoph Brossmer
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Patent number: 5693842Abstract: The invention relates to a process for preparing phosphorus-containing compounds of the formula I ##STR1## in which R.sup.1 and R.sup.2 are an alkyl radical having 1 to 8 carbon atoms, a cyclohexyl radical, a cyclopentyl radical, an aryl radical or a halogen-, alkyl- or alkoxy-substituted aryl radical, where R.sup.1 and R.sup.2 together with the phosphorus atom can also form a ring, n and m=0 or 1 and R.sup.3 and R.sup.4 are alkyl radicals having 1 to 4 carbon atoms or n=0, m=0 or 1 and R.sup.3 and R.sup.4 are H, by adding compounds of the formula II ##STR2## into dialkyl esters of fumaric acid or of maleic acid of the formula (III) or dialkyl esters of itaconic acid of the formula (IV) ##STR3## in which R.sup.3 and R.sup.4 have the meaning given above, and, optionally reacting an alkyl ester of a phosphorus-containing dicarboxylic acid of the formula (I), where n=0, with water in the presence of catalytic amounts of an acid to give the phosphorus-containing dicarboxylic acid.Type: GrantFiled: September 5, 1996Date of Patent: December 2, 1997Assignee: Hoechst AGInventors: Hans-Jerg Kleiner, Volker Freudenberger, Peter Klein
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Patent number: 5691425Abstract: Polyurethane dispersions prepared by polymerization, initiated by free radicals, of polyurethane macromonomers containing carboxyl, phosphonic acid or sulfonic acid groups and lateral vinyl groups and optionally terminal vinyl, hydroxyl, urethane, thiourethane and/or urea groups.These polyurethane dispersions are suitable for the production of coatings on substrates, as adhesives or as binders in printing inks.Type: GrantFiled: July 2, 1992Date of Patent: November 25, 1997Assignee: Hoechst AGInventors: Heinz-Peter Klein, Gerd Walz, Markus A. Schafheutle
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Patent number: 5670436Abstract: The present invention relates to an unbridged metallocene compound which is suitable for olefin polymerization.Type: GrantFiled: October 6, 1995Date of Patent: September 23, 1997Assignee: Hoechst AGInventors: Hans-Friedrich Herrmann, Michael Aulbach, Frank Kuber
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Patent number: 5661096Abstract: In the case of Ziegler catalysts based on a metallocene as the transition metal component and an aluminoxane as the activator, preactivation of the metallocene with the aluminoxane results in a considerable increase in the activity of the catalyst system. Furthermore, 1-olefin polymers of a high degree of isotacticity and having compact, spherical particles, a very narrow particle size distribution and a high bulk density are obtained by means of a catalyst system of this type.Type: GrantFiled: June 7, 1995Date of Patent: August 26, 1997Assignee: Hoechst AGInventors: Andreas Winter, Walter Spaleck
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Patent number: 5651847Abstract: There is described a double-face circular knit comprising two concentric lengths of knit web and an in-between spacer structure, wherein the spacer threads are optionally textured coarse-filament multifilament yarns, optionally in combination with monofilaments, the distance between the two lengths of knit web is from 0.3 to 8 mm, the stitch density corresponds to a machine gauge from E 16 to E 32, and the density of the spacer threads is between 150 and 250 threads per cm.sup.2. Preferably all the yarns of the double-face circular knit are made of the same polymer.Also described are the production and use of this double-face circular knit.Type: GrantFiled: February 10, 1994Date of Patent: July 29, 1997Assignee: Hoechst AGInventor: Alfons Loeffler
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Patent number: 5650537Abstract: A process for the preparation of N-acylglycine derivatives of the formula (I) ##STR1## which comprises reacting a carboxylic acid amide with an aldehyde in the presence of a solvent and an acid to give an acylaminomethylol and then carbonylating the acylaminomethylol in the presence of a cobalt carbonyl catalyst.Type: GrantFiled: May 2, 1995Date of Patent: July 22, 1997Assignee: Hoechst AGInventors: Matthias Beller, Hartmut Fischer, Thomas Gerdau, Peter Gross
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Patent number: 5648547Abstract: The invention relates to bis-phosphepines of the formula (I): ##STR1## where: Ar--Ar is biphenyl, 1,1'-binaphthyl or 1-phenylnaphthyl,R.sup.1 independently of one another are F, (C.sub.1 -C.sub.8)-alkyl or (C.sub.1 -C.sub.8)-alkoxy,m is 0, 1, 2, 3 or 4,R.sup.2 and R.sup.3 independently of one another are H, (C.sub.1 -C.sub.20)-alkyl, (C.sub.6 -C.sub.20)-aryl, (C.sub.7 -C.sub.20)-aralkyl, (C.sub.7 -C.sub.20)-alkaryl or (C.sub.3 -C.sub.20)-cycloalkyl andR.sup.4 is (C.sub.1 -C.sub.10)-alkylene, it also being possible for the alkylene chain to contain oxygen atoms and N-alkyl groups, (C.sub.3 -C.sub.10)-cycloalkylene, (C.sub.8 -C.sub.22)-arylene-bisalkyl or (C.sub.6 -C.sub.10)-arylene,the group CR.sup.2 R.sup.3 always being adjacent to the Ar--Ar bond.The invention further relates to processes for the preparation of compounds of the formula (I).Type: GrantFiled: September 21, 1995Date of Patent: July 15, 1997Assignee: Hoechst AGInventor: Dieter Regnat
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Patent number: 5646234Abstract: A process for producing fibers or films by the steps of:a) preparing an aromatic polyamide by polycondensation of dicarbonyl dihalides or mixtures thereof with at least two diamines in N-alkyllactams as a solvent, the polycondensation being of at least 90 mol %, based on the total amount of dicarbonyl dihalides in the reaction mixture, of compounds of the formula I or mixtures of such compoundsHal--OC--Ar.sup.1 --CO--Hal (I)with at least 90 mol%, based on the total amount of diamines in the reaction mixture, of compounds of the formula II and optionally III or mixtures of such compoundsH.sub.2 N--Ar.sup.2 --NH.sub.2 (II), H.sub.2 N--Ar.sup.3 --NH.sub.2 (III)where Ar.sup.1, Ar.sup.2 and Ar.sup.Type: GrantFiled: April 4, 1995Date of Patent: July 8, 1997Assignee: Hoechst AGInventors: Holger Jung, Richard Neuert, Peter Klein, Georg-Emerich Miess
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Patent number: 5634949Abstract: Cellulosic textiles are printed or dyed with multiple hook reactive dyes without fabric hand harshening on using a reactive dye preparation containing 0.5 to 10% by weight of a surfactant and 0 to 10% by weight of an antifoaming agent.Type: GrantFiled: June 5, 1995Date of Patent: June 3, 1997Assignee: Hoechst AGInventors: Kurt Hohmann, Peter Mischke, Gerd Pelster, Horst-Roland Mach
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Patent number: 5631403Abstract: The present invention relates to a process for the preparation of hydroxycarboxanilides of the formula (1) ##STR1## in which R.sup.1 and R.sup.2 are identical or different and are hydrogen, halogen, a nitro group, a cyano group, a straight-chain or branched alkyl, alkenyl, alkynyl or alkoxy group having 1 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, a cycloalkyl group having 6 to 12 carbon atoms or an aryl group having 6 to 12 carbon atoms, R.sup.3 is hydrogen or a straight-chain or branched alkyl group having 1 to 12 carbon atoms and n is an integer from 1 to 12, by reacting a halocarboxanilide of the formula (2) ##STR2## in which R.sup.1, R.sup.2, R.sup.3 and n have the same meaning as in formula (1) and Hal is chlorine, bromine or iodine, with a basic compound in a solvent mixture comprising water and one or more polar aprotic solvents at a temperature of 40.degree. to 180.degree. C.Type: GrantFiled: June 21, 1995Date of Patent: May 20, 1997Assignee: Hoechst AGInventors: Andreas Dierdorf, Siegfried Planker, Theodor Papenfuhs