Patents Assigned to Hoechst
  • Patent number: 5514752
    Abstract: Moldings which have been produced by thermoplastic forming from a polypropylene molding composition which comprises polypropylene or ethylene/propylene copolymers and polyvinyl butyral of the formula ##STR1## have considerable advantages over moldings of a polypropylene molding composition without PVB, since they have a higher surface tension and can therefore be coated, printed on, written on and laminated without problems without further pretreatment of the surface.
    Type: Grant
    Filed: September 20, 1994
    Date of Patent: May 7, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Matthias Gutweiler, Hans-Jurgen Zimmermann
  • Patent number: 5514782
    Abstract: Water-soluble monoazo compounds of the formula ##STR1## are described, suitable as fiber-reactive dyes for dyeing hydroxy- and/or carboxamido-containing material, in particular fiber material, such as wool and cellulose fiber materials, in which D is phenylene which can be substituted by 1 or 2 substituents customary in diazo components of fiber-reactive dyes and/or by a group of the formula Y--SO.sub.2 --(CH.sub.2).sub.m -- where Y has one of the meanings given below and m is the number 1 or 2, or is naphthylene which can be substituted by 1 or 2 substituents customary in diazo components of fiber-reactive dyes, or is benzothiazol-2-yl containing the group aforementioned Y--SO.sub.2 --(CH.sub.2).sub.n -- bonded to the carbocyclic ring thereof and can be substituted by a further substituent customary in fiber-reactive dyes, n is the number zero, 1 or 2, the group Y-SO.sub.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: May 7, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Jorg Dannheim
  • Patent number: 5514700
    Abstract: There are disclosed various compounds of the formula below, ##STR1## where n, X and R.sub.1 through R.sub.4 are as defined in the specification, which are useful for alleviating various memory dysfunctions characterized by a cholinergic deficit such as Alzheimer's disease.Compounds of this invention also inhibit monoamine oxidase and/or act at central .alpha..sub.2 -adrenergic receptors, and hence are useful as antidepressants.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 7, 1996
    Assignee: Hoechst-Roussel Pharmaceuticals Incorporated
    Inventors: Helen H. Ong, Gerard J. O'Malley, Michael C. Merriman, Mark G. Palermo
  • Patent number: 5512586
    Abstract: The invention relates to pyridine-2,4- and -2,5-dicarboxylic acid derivatives of the formula I ##STR1## in which R.sup.1, R.sup.2, 3.sup.3, R.sup.4 and X have the meanings given, a process for the preparation of these compounds and their use, in particular in medicaments for influencing the metabolism of collagen and collagen-like substances or the biosynthesis of Cl.sub.q.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: April 30, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Martin Bickel, Dietrich Brocks, Harald Burghard, Volkmar Gunzler, Stephan Henke, Hartmut Hanauske-Abel, Jurgen Mohr, Georg Tschank
  • Patent number: 5512534
    Abstract: The present invention relates to compounds of the formula I ##STR1## in which R.sup.1 is hydrogen,a substituted or unsubstituted aliphatic radicalhaving up to 30 carbon atoms,a substituted or unsubstituted alicyclic radicalhaving up to 30 carbon atoms,a substituted or unsubstituted aromatic radicalhaving up to 24 carbon atoms ora substituted or unsubstituted heteroaromaticradical having up to 20 carbon atoms,R.sup.2 is an amino acid,x'=0-80,y'=0-50,x"=0-80 andy"=0-50,with at least one of the variables x', y', x" and y" being greater than 0. The compounds of the formula I are prepared by reacting the corresponding dihydrogen phosphate with the respective amino acid or salt thereof. The compounds according to the invention can be employed, for example, as surfactants for emulsifying organic solvents in water.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: April 30, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Frisch, Thomas Maier
  • Patent number: 5512064
    Abstract: Fiber materials are modified with a polyalkyleneimine polymer at crosslinking agent, preferably glyoxal, and optionally dyed with water-soluble, anionic dyes, preferably reactive dyes. The dyeing process with fiber materials modified according to the invention can be carried out low-salt or completely without salt and also alkali-free or using only minimal amounts of alkali.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: April 30, 1996
    Assignee: Hoechst AG
    Inventors: Andreas von der Eltz, Joachim Clauss, Andreas Schrell
  • Patent number: 5512231
    Abstract: A process for preparing cellulose acetate articles such as fibers. The process includes the following steps: Cellulose acetate is dissolved in a solvent to form a solution, the solvent made up of from 5% to 50% by weight of carbon dioxide and from 95% to 50% of a compatible solvent such as acetone. The solvent is above the supercritical conditions of CO.sub.2. The solution is filtrated of insoluble matter and extended to form a fiber or similar article.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: April 30, 1996
    Assignee: Hoechst Celanese Corporation
    Inventors: Mark C. Thies, Nnamdi E. Aniedobe, George A. Serad
  • Patent number: 5512558
    Abstract: nor-Bile acid derivatives, processes for their preparation and the use of these compounds as medicaments nor-Bile acid derivatives of the formula IG1--X--G2 Iin which G1, G2 and X have the meanings given, processes for the preparation of these compounds and medicaments are described. On the basis of their pharmacological action, they can be used as an antihyperlipidemic agent.
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: April 30, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Alfons Enhsen, Heiner Glombik, Werner Kramer, Gunther Wess
  • Patent number: 5512063
    Abstract: The present invention relates to the use of phenol- and naphthol-novolak alkoxylate mixed esters which as dyeing auxiliaries in the dyeing of polyester-cellulose blend fabrics prevent soiling of the cellulose portion by the disperse dyestuff and to processes for the continuous dyeing of such blend fabrics using phenol- and naphthol-novolak alkoxylate mixed esters.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: April 30, 1996
    Assignee: Hoechst Mitsubishi Kasei Co
    Inventor: Hubert Kruse
  • Patent number: 5512207
    Abstract: Azaaromatic compounds of the formula I ##STR1## in which R.sup.1 and R.sup.2 are, for example, alkyl radicals,M is, for example, --O--, --COO-- or --O--CO--O--,A is an aromatic or heteroaromatic ring,V, X, Y and Z are CH, CF or N,a,b,c,d,m and n are 0 or 1, where m+n is 0 or 1 and a+d is 0 or 1.The compounds of the formula I are suitable as components of liquid-crystal mixtures.
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: April 30, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Javier Manero, Hubert Schlosser, Rainer Wingen
  • Patent number: 5512061
    Abstract: A process for printing and dyeing sheetlike fiber materials with anionic dyes comprisesa) first applying to the sheetlike fiber material an aqueous solution containing a fixing alkali and a compound which contains a primary, secondary or tertiary amino group or a quaternary ammonium group, which may each also be part of a heterocycle, by using a printing process, thenb) subjecting the sheetlike fiber material to a fixing treatment to modify the sheetlike fiber material, and finally and optionallyc) dyeing the modified sheetlike fiber material one or more times by a customary exhaust or padding method.
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: April 30, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Andreas von der Eltz, Andreas Schrell, Werner H. Russ
  • Patent number: 5510455
    Abstract: A new class of thermotropic liquid crystalline polymers comprises monomers units I, II, III, and IV, where ##STR1## Ar.sup.1, Ar.sup.2 and Ar.sup.3 are each independently selected from the group consisting of 1,3-phenylene, 1,4-phenylene, 2,6-naphthylene, 2,7-naphthylene, 4,4'-biphenylene, bis-aryl moieties having the formula ##STR2## and mixtures thereof. In the bis-aryl moieties, each X can be S, O, CO, SO, SO.sub.2, C(CH.sub.3).sub.2 or C(CF.sub.3).sub.2.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: April 23, 1996
    Assignee: Hoechst Celanese Corp.
    Inventor: Wilfried Hatke
  • Patent number: 5510192
    Abstract: Disclosed herein is a polyethylene naphthalate multilayered film for a high density magnetic recording medium comprising:a polyethylene naphthalate layer (A), anda polyethylene naphthalate layer (B) laminated on at least one surface of said polyethylene naphthalate layer (A) and having a thickness of not more than 2 .mu.m and specific surface characteristics,the multilayered film having Young's modulus of not less than 700 kg/mm.sup.2 in machine and transverse directions.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: April 23, 1996
    Assignee: Diafoil Hoechst Company, Limited
    Inventors: Shigeo Utsumi, Masashi Inagaki, Yuko Watanuki
  • Patent number: 5510184
    Abstract: Textured yarns which can be processed for example by deep-drawing into irreversibly highly formable woven or knitted fabrics and a process for their preparation are described. These yarns have degrees of elasticity of below 50% and contain at least as carrier component undrawn but partially oriented polyester filaments which have been improved by a heat treatment in their flow stress.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: April 23, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Jorgen Due, Bjarne Graves, Henning Bak
  • Patent number: 5510420
    Abstract: The present invention relates to a novel matrix resin for high-temperature stable photoimageable compositions, in the form of a graft copolymer of monomeric or lower oligomeric hydroxyphenyl units grafted onto a polymer backbone containing reactive sites, to a process for its production and to its use as a matrix resin in photoimageable compositions either in a pure form or in admixture with other polymeric materials.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: April 23, 1996
    Assignee: Hoechst Celanese Corporation
    Inventors: Ralph R. Dammel, Owen B. Evans
  • Patent number: 5510424
    Abstract: Homogeneous polymer alloys based on sulfonated, aromatic polyether ketonesHomogeneous polymer alloys comprising sulfonated, aromatic polyether ketones and at least one polyamide as the main constituents, wherein the polyamide is a completely aromatic polyamide.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: April 23, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Freddy Helmer-Metzmann, Otto Hermann-Schonherr, Uwe Kampschulte
  • Patent number: 5510512
    Abstract: Process for the preparation of 2-(dialkoxymethyl)carboxylic acid esters of the formula I ##STR1## by oxidizing .beta.-acetalization of acrylic acid esters with alcohols R.sup.1 OH, wherein R.sup.1 has the meaning mentioned, in the presence of oxygen as the oxidant and of a catalyst system based on one or more metals of the platinum group and/or compounds thereof and of a copper compound, comprises carrying out the reaction at a temperature of up to 80.degree. C. and in which the catalyst system contains 1 to 4 equivalents of anions, based on the sum of the metal atoms and metal cations, of which at most 3 equivalents are halide ions, the halogen having a molecular weight of at least 35.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: April 23, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Heinz Strutz
  • Patent number: 5510554
    Abstract: In the preparation of 1,1'-binaphthyls substituted in the 2,2'-positions (and optionally substituted in one or more of positions 3 to 7 and/or 3' to 7'), a 1-halo-2-substituted naphthalene is reacted with a 2-substituted-1-naphthyl-magnesium halide in the presence of a catalyst. The catalyst comprises palladium and a phosphine ligand. Typical phosphine ligands include triphenylphosphine, 1,4-bis(diphenylphosphino)butane, 2,2'-bis(diphenylphosphinomethoxy)-1,1'-binaphthyl, and tetrakis(triphonylphosphine).
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: April 23, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Dieter Regnat, Hans-Jerg Kleiner
  • Patent number: 5510436
    Abstract: The water-soluble copolymer comprises 5-90% by weight of groups of the formula ##STR1## in which R.sup.1 is hydrogen or methyl, R.sup.2 is C.sub.2 -C.sub.10 -alkylene, and Me is ammonium or an alkali metal, 5-90% by weight of groups of the formula--CH.dbd.CH--CH.sub.2 --N.sup.+ R.sup.3 R.sup.4 --CH.sub.2 --CH.dbd.CH-- X.sup.- IIin which X is a halogen, R.sup.3 and R.sup.4, independently of one another, are C.sub.1 -C.sub.6 -alkyl, 0-60% by weight of groups of the formula ##STR2## in which R.sup.5 and R.sup.6 together are a propylene group which with inclusion of the radical ##STR3## forms a pyrrolidone radical, and 0-30% by weight of groups of the formula--CHR.sup.7 --CHR.sup.8 -- IVin which R.sup.7 is hydrogen or methyl and R.sup.8 is CONH.sub.2, CON(CH.sub.3).sub.2, cyano, SO.sub.3 H, SO.sub.3 Me, C.sub.6 H.sub.4 SO.sub.3 H, C.sub.6 H.sub.4 SO.sub.3 Me, CH.sub.2 SO.sub.3 H, CH.sub.2 SO.sub.3 Me, COOH, COOMe, or carboxy-C.sub.1 -C.sub.
    Type: Grant
    Filed: June 15, 1994
    Date of Patent: April 23, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Martin Hille, Heinz Wittkus, Jurgen Tonhauser, Fritz Engelhardt, Ulrich Riegel
  • Patent number: 5510494
    Abstract: Process for the preparation of substituted and unsubstituted 2-(cyanomethyl)benzimidazoleA process for the preparation of substituted or unsubstituted 2-(cyanomethyl)benzimidazole, of the formula (I) ##STR1## which comprises reacting an o-phenylenediamine of the formula (II) ##STR2## in which R.sup.1 is C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy, preferably methyl or methoxy, and n is an integer from 0 to 2, preferably 0 or 1, in particular 0, with a cyanoacetic ester of the formula (III)NC--CH.sub.2 --COOR.sup.2 (III)in which R.sup.2 is unsubstituted or substituted, linear, branched or cyclic C.sub.2 -C.sub.12 -alkyl and 1 to 3 CH.sub.2 groups of the alkyl radical can in each case be replaced by oxygen, at a temperature of 150.degree.-175.degree. C. in a halogen-free inert solvent whose boiling point is 150.degree. C. or more, or in a mixture of two or more of such solvents, without adding an aromatic sulfonic acid as catalyst.
    Type: Grant
    Filed: February 23, 1994
    Date of Patent: April 23, 1996
    Assignee: Hoechst AG
    Inventors: Erwin Dietz, Gustav Kapaun