Patents Assigned to Hoechst
  • Patent number: 4810792
    Abstract: Novel 3-methylenespiro[benzofuran-2(3H),4'-piperidines, intermediates and processes for the preparation thereof and methods for reducing blood pressure utilizing the compounds and compositions thereof are disclosed.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: March 7, 1989
    Assignee: Hoechst-Roussel Pharmaceuticals Inc.
    Inventor: Raymond W. Kosley, Jr.
  • Patent number: 4810730
    Abstract: This invention relates to a process for the production of high strength polybenzimidazole filaments and molded products made from such filaments. The filaments produced by this process contain from about 10 to about 50 percent by weight residual solvent and can be heated at a temperature of about 350.degree. C. to about 600.degree. C. to produce three-dimensional foamed articles.
    Type: Grant
    Filed: May 6, 1987
    Date of Patent: March 7, 1989
    Assignee: Hoechst Celanese Corp.
    Inventors: John S. Letinski, Gunilla E. Gillberg-LaForce
  • Patent number: 4810436
    Abstract: Boron ceramics including boron ceramic fibers are formed by pyrolyzing at temperatures greater than 800.degree. C. organoboron polymers which have been formed by condensing decaborane with amines or phosphines.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: March 7, 1989
    Assignee: Hoechst Celanese Corp.
    Inventor: Robert E. Johnson
  • Patent number: 4808658
    Abstract: The invention relates to aminourethanes essentially composed of structural units derived from (.alpha.) polyamines of the general formula (I) ##STR1## and of structural units derived from (.beta.) oligomeric or polymeric compounds which contain at least one terminal 2-oxo-1,3-dioxolane group.The invention further relates to a process for preparing these aminourethanes and to their use in particular in paint formulations.The aminourethanes according to the invention are suitable in particular for use as curable water-dispersible binders in particular for cationic electrocoating.
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: February 28, 1989
    Assignee: Hoechst AG
    Inventors: Gerd Walz, Michael Honel, Gerhard Brincopke, Walter Sprenger, Manfred Finke, Rudiger Lenz
  • Patent number: 4808508
    Abstract: This invention relates to negative photosensitized sheet constructions which, upon exposure to an actinic radiation source through a screened image, can accurately reproduce said image. The construction is useful as a color proofing film which can be employed to predict the image quality from a lithographic printing process.
    Type: Grant
    Filed: July 1, 1986
    Date of Patent: February 28, 1989
    Assignee: Hoechst Celanese Corporation
    Inventor: Stephan J. W. Platzer
  • Patent number: 4808684
    Abstract: A novel heat-curable acrylic-terminated monomer is provided which exhibits an optically anisotropic melt phase at a temperature which enables it to undergo melt processing in the formation of molded articles, etc. Subsequent to melt processing articles prepared from the monomer are capable of being cured to produce a thermoset self-reinforced composite which is soft and flexible relative to prior art monomers. The monomer may, for example, consist essentially of the reaction product of a methacrylic-substituted phenol and terephthalic acid.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: February 28, 1989
    Assignee: Hoechst Celanese Corp.
    Inventor: Robert W. Stackman
  • Patent number: 4808213
    Abstract: The compounds of the formula I, or salts thereof, ##STR1## in which R.sup.1 and R.sup.2, independently of one another, denote (C.sub.1 -C.sub.4)-alkyl,R.sup.3 denotes halogen, in particular Cl or Br,R.sup.4 denotes hydrogen, Cl, Br or methyl,X denotes O, S or N-R.sup.5, andR.sup.5 denotes hydrogen, (C.sub.2 -C.sub.6)-alkenyl or (C.sub.1 -C.sub.6)-alkyl, where the alkyl group may be up to disubstituted by (C.sub.1 -C.sub.6)-alkoxy or (C.sub.1 -C.sub.3)-dialkylamino, or up to hexasubstituted by halogen,have an excellent plant growth-regulating action in important crops.
    Type: Grant
    Filed: August 25, 1987
    Date of Patent: February 28, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Roland Schmierer, Hilmar Mildenberger, Helmut Burstell
  • Patent number: 4807968
    Abstract: In a preferred embodiment this invention provides novel organopolysiloxane/liquid crystalline polymer blends which exhibit nonlinear optical response.Illustrative of an invention composition is a blend of (1) organopolysiloxane corresponding to the formula: ##STR1## where n is an integer of at least 5; and (2) a liquid crystalline polymer corresponding to the formula: ##STR2## where m is an integer of at least 3.
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: February 28, 1989
    Assignee: Hoechst Celanese Corp.
    Inventor: Thomas M. Leslie
  • Patent number: 4808651
    Abstract: The invention relates to solutions of fluoropolymers which preferably contain carbonate groups, in solvents of the general formula (I) ##STR1## These solutions are suitable, in particular, for the production of membranes for liquid permeation processes, such as electrolysis.
    Type: Grant
    Filed: September 15, 1987
    Date of Patent: February 28, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Peter Blickle, Klaus Hintzer, Gernot Lohr, Werner Schwertfeger
  • Patent number: 4808332
    Abstract: This invention provides novel isotropic acrylic copolymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in optical light switch and light modulator devices.
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: February 28, 1989
    Assignee: Hoechst Celanese Corp.
    Inventors: Ronald N. DeMartino, Hyun-Nam Yoon
  • Patent number: 4808606
    Abstract: Alkenylazoles of formula I a/b ##STR1## in which X/Y is H, alkyl, phenyl, Hal, alkoxy or alkylthio; Z is CH or N; R is alkyl or a bridged (CH.sub.2).sub.m chain; and A is alkylene or a bridged alkylene chain; and the salts of these alkenylazoles are antimycotic agents or fungicides.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: February 28, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Herbert Siegel, Wolfgang Raether, Walter Dittmar
  • Patent number: 4808193
    Abstract: Water-soluble compounds having fiber-reactive dye properties of the general formula ##STR1## in which A is an alkylene of 2 to 6 carbon atoms or a phenylene which can be substituted by 1 or 2 substituents, or is a radical of the formula ##STR2## in which W is a direct bond or a bridge member and the R' and R* each denote hydrogen, chlorine, methyl, methoxy, ethoxy, carboxy or sulfo;B is chlorine or fluorine;R is hydrogen, chlorine, an alkyl of 1 to 4 carbon atoms or an alkoxy of 1 to 4 carbon atoms;M is hydrogen or an alkali metal;n stands for the number zero, 1 or 2,K is a radical of the formula ##STR3## in which D is phenylene which can be substituted by chlorine, bromine, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, carboxy or sulfo, or is naphthalene with optionally 1 or 2 sulfo groups,R.sup.1 denotes hydrogen, chlorine, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms,R.sup.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: February 28, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ludwig Schlafer, Hartmut Springer, Michael Kunze
  • Patent number: 4808343
    Abstract: A process for isolating alkanesulfonates having a low alkali metal sulfate content and sulfuric acid from paraffin-sulfoxidation reaction mixtures with the aid of alcohols, the reaction mixture, freed from sulfur dioxide, being mixed in a sequence of five mixer/settler vessels with a C.sub.4 -C.sub.8 -alcohol and the amount of alkali metal hydroxide which is necessary for neutralization. The process is designed so that no alkali metal sulfate, but instead only sulfuric acid, is produced as a byproduct. Fewer alkali metal ions are thereby lost from the system, and the consumption of alkali metal hydroxide for neutralization is accordingly reduced.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: February 28, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Rudolf Pistorius
  • Patent number: 4808752
    Abstract: A process for the preparation of 2-aminophenyl thioethers of the formula (1) ##STR1## in which R represents an alkylC.sub.1 -C.sub.6 group which can be substituted by hydroxyl, alkoxyC.sub.1 -C.sub.4, carboxyl, --COO-alkyl-C.sub.1 -C.sub.4, alkenylC.sub.2 -C.sub.6 or phenyl groups or by the radical ##STR2## and X and Y are each a hydrogen or halogen atom or an alkylC.sub.1 -C.sub.6, alkoxyC.sub.1 -C.sub.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: February 28, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Theodor Papenfuhs
  • Patent number: 4806611
    Abstract: Aminourethanes, a process for their preparation and their useThe invention relates to aminourethanes composed essentially of structural units derived from(A) polyamines of the general formula (I) an/or (II ##STR1## (B) if appropriate, further polyamines, (C) compounds containing, on average, at least one terminal 2-oxo-1,3-dioxolane group per molecule and(D) if appropriate, compounds having a monofunctional reaction, as chain stoppers.The invention also relates to a process for the preparation of these aminourethanes and to their use, in particular in paint formulations and especially in electrodeposition paints.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: February 21, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Michael Honel, Peter Ziegler, Gerd Walz, Rudiger Lenz, Hartmut Foedde, Gerhard Brindopke
  • Patent number: 4806458
    Abstract: The invention provides a composition which comprises from about 3 to about 50% by weight of a hexa-alkyl disilazane and a solvent composition which comprises one or more compounds selected from the group consisting of a propylene glycol alkyl ether and a propylene glycol alkyl ether acetate.
    Type: Grant
    Filed: August 27, 1987
    Date of Patent: February 21, 1989
    Assignee: Hoechst Celanese Corporation
    Inventor: Dana Durham
  • Patent number: 4806126
    Abstract: Process for alkali-free dyeing and printing with reactive dyes. Beforehand, the textile material is treated with a wetting agent and a reaction product of polyethyleneimine and a bifunctional alkylating agent. This is followed by dyeing with reactive dyes in a conventional manner but without the addition of alkali to fix the dyes.
    Type: Grant
    Filed: March 23, 1988
    Date of Patent: February 21, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Klaus Sternberger, Karl-Heinz Keil, Dieter Gevert, Oscar Navarrete
  • Patent number: 4806554
    Abstract: There are described compounds of the formula ##STR1## where n is 0 or 1; R.sub.1 is independently hydrogen, loweralkyl, loweralkenyl, loweralkynyl, loweralkoxycarbonylloweralkyl, loweralkylaminocarbonylloweralkyl, aminocarbonylloweralkyl, arylloweralkyl, phenyl, nitrophenyl, cyanophenyl, trifluoromethylphenyl, aminophenyl, loweralkanoylaminophenyl, loweralkoxycarbonyl, arylloweralkoxycarbonyl, aryloxycarbonyl, loweralkylaminocarbonyl, arylloweralkylaminocarbonyl, arylaminocarbonyl, alkanoyl, arylloweralkanoyl, aroyl, alkenoyl, alkynoyl or --R.sub.5 --NR'R" where R.sub.5 is loweralkylene, loweralkenylene or loweralkynylene and R' and R" are each independently loweralkyl or alternatively the group --NR'R" as a whole is 1-pyrrolidinyl, 1-piperidinyl, 4-morpholinyl, 4-loweralkyl-1-piperazinyl or 4-aryl-1-piperazinyl;R.sub.2 is hydrogen or loweralkyl;R.sub.3 and R.sub.4 are each independently hydrogen or loweralkyl, or alternatively R.sub.3 and R.sub.4 taken together form --CH.dbd.CH--CH.dbd.
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: February 21, 1989
    Assignee: Hoechst-Roussel Pharmaceuticals, Inc.
    Inventors: Richard C. Effland, Joseph T. Klein
  • Patent number: 4806649
    Abstract: Novel 3-(piperidinyl)- and 3-(pyrrolidinyl)-1H-indazoles, intermediates and processes for the preparation thereof, and methods for treating psychoses, treating depression, alleviating pain, treating convulsions and treating hypertension utilizing compounds or compositions thereof are disclosed.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: February 21, 1989
    Assignee: Hoechst-Roussel Pharmaceuticals, Inc.
    Inventor: Joseph T. Strupczewski
  • Patent number: 4806641
    Abstract: The invention relates to salts of 3-hydroxy-4-oxo-3,4-dihydro-1,2,3-benzotriazine (HOObt) and compounds containing a primary amino group, a process for their preparation and their use.
    Type: Grant
    Filed: June 6, 1985
    Date of Patent: February 21, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Alexander Volk, Wolfgang Konig