Abstract: A process for highly regioselective esterification and ester cleavage on unsaturated sugar compounds with the aid of lipases and esterases, and products which can be prepared by this process.Highly regioselective esterifications and ester cleavages can be carried out on unsaturated sugar compounds with the aid of lipases and esterases. Lipases from microorganisms or from the pancreas and liver of animals are preferably used.
Abstract: Novel dye mixture comprising three to seven fiber-reactive dyes selected from dyes of the below-indicated and defined formulae (1) to (7) with the proviso that the dye mixture contain at least one representative of the formulae (1) and/or (2), at least one representative of the formulae (3) and/or (4) and at least one representative of the formulae (5) and/or (6) and/or (7): ##STR1##
Abstract: This invention relates to the preparation of N-acyl taurates by the direct condensation of carboxylic acids with taurate (substituted 2-aminoalkane sulfonic acids and their alkali metal salts) derivatives.
Abstract: To prepare a corrosion-inhibiting liquid de-icing agent based on alkali metal acetates, 30 to 50 percent strength by weight alkali metal hydroxide solution is introduced into a reaction container provided with a cooling device and a mixing device, and 85 to 100% strength acetic acid is metered into the reaction container until the ratio by weight of acetic acid to alkali metal hydroxide solution therein (0.30 to 0.45):1. A portion of this solution is transferred from the reaction container to a stirred dissolving tank and 0.03 to 1% by weight, relative to the batch, of benzotriazole and/or tolyltriazole and/or imidazole is dissolved therein. The resulting solution containing azole is introduced into the reaction container along with 0.01 to 0.2% by weight of phosphoric acid, relative to the batch. Acetic acid continues to be metered into the reaction container until the density of the solution in the reaction container is 1.07 to 1.39 g/cm.sup.3 at 20.degree. C.
Type:
Grant
Filed:
December 2, 1992
Date of Patent:
March 5, 1996
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Gerhard Bettermann, Gu/ nther Schimmel, Johannes Himmrich
Abstract: A fusion protein including a ballast portion and a desired protein. The ballast portion forms either the C- or N-terminus of the fusion protein, and the ballast portion includes a part of the amino acid sequence of interleukin-2 (IL-2). According to certain preferred embodiments, the ballast portion includes approximately the first 100 amino acids of IL-2. According to other preferred embodiments, the ballast portion contains fewer than 100 amino acids of IL-2. According to further advantageous embodiments, a synthetic IL-2 gene is divided by unique cleavage sites into 6 segments, any number of these segments can be linked in arbitrary sequence. These embodiments permit specific instructions with which the solubility of the fusion protein can be altered, and thus the fusion proteins can readily be separated from soluble proteins intrinsic to a host. The DNA coding for the fusion proteins, as well as vectors and hosts are also provided.
Abstract: The invention relates to a multilayer polypropylene film which contains at least one base layer containing polypropylene or a polypropylene mixture and resin, and at least one outer layer which contains a mixture or a blend of two components I and II. Component I essentially comprises a propylene homopolymer or a copolymer of ethylene and propylene or ethylene and butylene or propylene and butylene or ethylene and another .alpha.-olefin having 5 to 10 carbon atoms or propylene and another .alpha.-olefin having 5 to 10 carbon atoms or a terpolymer of ethylene and propylene and butylene or ethylene and propylene and another .alpha.-olefin having 5 to 10 carbon atoms or a mixture of two or more of the homopolymers, copolymers and terpolymers or a blend of two or more of the homopolymers, copolymers and terpolymers, if desired mixed with one or more of the homopolymers, copolymers and terpolymers. Component II essentially contains an HDPE or a blend of two components A and B.
Type:
Grant
Filed:
April 25, 1994
Date of Patent:
March 5, 1996
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Herbert Peiffer, Ursula Murschall, Gunter Schloegl
Abstract: Process for preparing a polyarylene sulfone by oxidizing a polyarylene thioether in acetic acid with hydrogen peroxide, the reaction being carried out in the presence of catalytic amounts of concentrated sulfuric acid and/or with the addition of equilibrium per-acids. The reaction products are suitable for producing molded parts having high temperature resistance and high resistance to chemicals.
Type:
Grant
Filed:
May 3, 1994
Date of Patent:
March 5, 1996
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Dietrich Fleischer, Heinz Strutz, Ju/ rgen Kulpe, Andreas Schleicher
Abstract: Polyarylene thioethers having recurring units of the formula[--(S--E--).sub.a --(--SO--E--).sub.b --(SO.sub.2 --E).sub.c --](I)in which E are, independently of one another, phenylene, naphthylene or biphenylene, a and c have, independently of one another, values from 0 to less than 1 and b has values from greater than zero to less than 1, with the proviso that the sum of a+b+c is equal to 1 and at least two of the indices are greater than zero, are obtained by oxidation of polyarylene sulfides in two stages, wherein in the first stage a polymer in solid form in a suspension medium is oxidized with ozone and the reaction product obtained is in the second stage reacted in acetic acid with hydrogen peroxide in the presence of catalytic amounts of concentrated sulfuric acid and/or with addition of equilibrium per-acids. The polyarylene thioethers are suitable for the production of molded parts having high temperature resistance and high resistance to chemicals.
Type:
Grant
Filed:
May 3, 1994
Date of Patent:
March 5, 1996
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Dietrich Fleischer, Heinz Strutz, Ju/ rgen Kulpe, Andreas Schleicher
Abstract: The present invention relates to monoazo dyes of the general formula I ##STR1## in which X is methyl, chlorine or bromine,R.sup.1 is ethyl, n-propyl, i-propyl, n-butyl or i-butyl,R.sup.2 is (C.sub.1 -C.sub.6)-alkyl, (C.sub.1 -C.sub.4)-alkoxy-substituted linear (C.sub.2 -C.sub.4)-alkyl, allyl, phenyl, acetyl or propionyl andR.sup.3 is hydrogen, acetyl or propionyl,mixtures containing dyes of the general formula I and the preparation of these dyes and their mixtures and their use for the dyeing of hydrophobic synthetic materials, in particular for automotive cover fabrics.
Abstract: An animal tissue antigen for osteoporotic patients that reacts with antibody in a serum of human osteoporotic patients, but does not react with that in normal human serum. Preferably, a specific antigen for osteoporotic patients in rat or mouse epithelium of tongue mucous membrane, epithelium of tracheal mucous membrane, upper lip epidermis or follicular epithelium containing upper lip hair shafts, or a specific antigen for osteoporotic patients contained in cultured cells of a human squamous cell tongue carcinoma cell lines such as SCC-9 and fibroblast cell lines such as MRC-5. Osteoporosis can be both specifically and easily diagnosed by bringing the above-mentioned antigen in contact with a serum of a subject and then testing for the presence of an antigen-antibody reaction.
Abstract: The invention relates to oxide particles which have a surface modification by covalently bonded organic groups which allow covalent bonding into polymer materials. These particles are particularly advantageous in their use as fillers or modifying agents in polymer materials, in particular polymer films.
Type:
Grant
Filed:
June 1, 1994
Date of Patent:
February 27, 1996
Assignees:
Merck Patent Gesellschaft mit beschrankter Haftung, Hoechst Aktiengesellschaft
Inventors:
Joachim Kinkel, Kurt Marquard, Ludwig Pohl
Abstract: The invention relates to cosmetic preparations which have a content of compounds of the general formula I ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 are identical or different and are hydrogen or alkyl with 1 to 4 carbon atoms, where R.sup.1 and R.sup.3 are preferably hydrogen and R.sup.2 is preferably methyl,X is S or O,Y is hydrogen or up to two halogen atoms, preferably chlorine and/or bromine,Z is a single bond or the divalent radicals 0, S, --CH.sub.2 --, --CH.sub.2 --O--, --O--CH.sub.2 --, --CH.sub.2 --S--, --S--CH.sub.2 -- or --CH.dbd.CH--CH.sub.2 --O--,Ar is an aromatic ring system which has up to two rings and which can be substituted by up to three radicals from the group comprising fluorine, chlorine, bromine, methoxy, C.sub.1 -C.sub.4 -alkyl, trifluoromethyl and trifluoromethoxy,and/or their salts.The invention furthermore relates to the use of these cosmetic preparations as antidandruff composition and deodorant cosmetic composition.
Type:
Grant
Filed:
October 3, 1994
Date of Patent:
February 27, 1996
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Heinz Hanel, Waltraud Simsch, Alwin K. Reng
Abstract: Isoxazole-4-carboxamide derivatives and hydroxyalkylidene-cyanoacetamide derivatives are suitable for the treatment of carcinoses. These compounds can be prepared by known processes. Some of the compounds are novel and are additionally suitable for the treatment of rheumatic disorders.
Type:
Grant
Filed:
November 16, 1992
Date of Patent:
February 27, 1996
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Robert R. Bartlett, Friedrich-Johannes Kammerer
Abstract: A metallized polyester film capacitor comprising as dielectric, a polyester film having a coating layer on at least one side of the polyester film, the coating layer comprising a polycarbonate polyurethane, and a metal deposited on the coated layer.
Abstract: This application relates to compounds of the formula ##STR1## wherein R.sup.1, X, Y and n are as defined in the specification; and pharmaceutically acceptable addition salts thereof and optical and geometric isomers or racemic mixtures thereof; which compounds are useful for the treatment of various memory dysfunctions characterized by a decreased cholinergic function such as Alzheimer's disease. Compounds of this invention also inhibit monoamine oxidase and hence are useful as antidepressants.
Abstract: A method for the preparation of .alpha.-substituted .omega.-dihydroperluoroalkane derivatives of the general formula H(CF.sub.2 CF.sub.2).sub.n R wherein R=H or COOH, and n=1-10 is characterized by oxidizing .alpha., .alpha., .omega.-trihydroperfluoroalcohols with an oxygen gas or an oxygen-containing gas in the presence of a homogeneous copper catalyst and an alkaline agent in an organic solvent with subsequent isolation of the desired product.
Type:
Grant
Filed:
July 15, 1994
Date of Patent:
February 27, 1996
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Irina P. Skibida, Andrei M. Sakharov, Jury L. Bakhmutov, Vladimir F. Denisenkow, Nina P. Martynova
Abstract: Porous moldings of ultrahigh-molecular-weight polyethylene obtained by injection molding polyethylenes having an intrinsic viscosity of 500 to 5000 ml/g, a mean particle size of 100 to 1500 .mu.m, and a bulk density of at least 0.35 g/cm.sup.3. The polymer is preferably molded in an injection-molding machine at 160.degree. to 260.degree. C. and an injection pressure of 80 to 150 MPa. The ratio between the flow distance of the material in the injection mold and the wall thickness of the molding is a maximum of 7.5.
Type:
Grant
Filed:
December 5, 1994
Date of Patent:
February 27, 1996
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Sabine Gorden, Hermann van Laak, Holger Schmitz
Abstract: Described are low-pill, low-flammability linear fiber-forming polyesters formed from dicarboxylic acid and diol components, which polyesters contain in their polymer chain modifying units formed by esterification or transesterification from compounds of the formulae I and/or II and/or III ##STR1## where R.sup.1 and R.sup.2 are identical or different and each is a univalent aliphatic, araliphatic or aromatic hydrocarbon radical having 1 to 12 carbon atoms, orR.sup.1 and R.sup.2 are together a bivalent aliphatic, araliphatic or aromatic radical,R.sup.3 is an (n+1)-valent organic radical,A is a group capable of ester formation, n is an integer from 1 to 3,R.sup.4 and R.sup.5 are identical or different and each is hydrogen or a univalent aliphatic, araliphatic or aromatic hydrocarbon radical having 1 to 12 carbon atoms,y is an integer from 1 to 10,R.sup.
Type:
Grant
Filed:
August 25, 1994
Date of Patent:
February 27, 1996
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Volker Freudenberger, Peter Klein, Hans-Jerg Kleiner
Abstract: The invention relates to a heat-sealable, shrinkable multilayer polypropylene film which comprises at least one base layer containing a propylene polymer or a propylene polymer mixture and at least one outer layer which comprises a mixture or a blend of two components I and II. The mixture contains copolymers and terpolymers of .alpha.-olefins having 2 to 10 carbon atoms and HDPE. The film has a longitudinal shrinkage of >20 and a transverse shrinkage of >25% at 120.degree. C.
Type:
Grant
Filed:
April 28, 1994
Date of Patent:
February 27, 1996
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Herbert Peiffer, Ursula Murschall, Gunter Schloegl
Abstract: R*--O--CO--NR.sup.3 A,where R.sup.3 stands for phenyl or alkyl.The compounds of formula (II) can be obtained from the corresponding sulphochlorides.
Type:
Grant
Filed:
November 10, 1994
Date of Patent:
February 27, 1996
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Heinz Kehne, Lothar Willms, Oswald Ort, Klaus Bauer, Hermann Bieringer