Abstract: An oriented, heat-sealable, multilayer polyolefin film comprising a base layer containing polypropylene and a heat-sealable outer layer on each side of the base layer. The heat-sealable outer layers contain a propylene copolymer and/or a propylene terpolymer and a mixture of an antiblocking agent having a mean particle diameter of from about 3 to 5 .mu.m and a further antiblocking agent having a mean particle diameter of from about 1 to 2.5 .mu.m.
Type:
Grant
Filed:
April 26, 1996
Date of Patent:
May 4, 1999
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Ursula Murschall, Herbert Peiffer, Gunter Schloegl
Abstract: The invention relates to a process for preparing sodium disilicate in the .beta. form having a high ion-exchange capacity and a molar ratio Na.sub.2 O:SiO.sub.2 of about 1:2 from a silicate source and sodium hydroxide solution at elevated temperature, with the product formed being separated off by filtration, wherein the product is further heat treated at from 450.degree. to 780.degree. C. and/or is pressed to form compact parts.
Type:
Grant
Filed:
September 30, 1996
Date of Patent:
April 20, 1999
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Jan Wilkens, Gunther Schimmel, Alexander Tapper
Abstract: Fluorinated phenanthrene derivatives of the formula (I) ##STR1## in which the symbols and indices have the following meanings: E.sup.1, E.sup.2, E.sup.3, E.sup.4, E.sup.5 and E.sup.6 are identical or different and are --N--, --CF-- or --CH--;G is --CF.sub.2 CF.sub.2 -- or --CF.dbd.CF--;R.sup.1 and R.sup.2 are, for example, alkyl or alkoxy;M.sup.1, M.sup.2, M.sup.3 and M.sup.4 are, for example, O, --CO--O--, --O--CO-- or a single bond;A.sup.1 and A.sup.2 are, for example, 1,4-phenylene or pyrimidine-2,5-diyl;m and n are zero or one, but in total are not more than one,are suitable as components of liquid-crystalline mixtures.
Abstract: Continuous process for producing unidirectionally reinforced composite materials by impregnating a continuous reinforcing fiber strand with a thermoplastic matrix in an impregnating bath containing a dispersion of a thermoplastic powder by measuring the width of the strand leaving the impregnating bath and using this measured value for regulating the polymer concentration in the impregnating bath.
Type:
Grant
Filed:
October 23, 1997
Date of Patent:
March 30, 1999
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Georg Hinrichsen, Albert Vodermayer, Karl-Heinz Reichert, Lothar Kuhnert, Wolfgang Lindner, Gerd Goldmann
Abstract: The invention relates to a process for preserving liquid and pasty feedstuffs made from potatoes, food residues, spent grains, brewer's yeast, distiller's spent mash and similar constituents, which comprises adding an aqueous potassium sorbate solution and an aqueous solution of a physiologically harmless acid, to the feedstuff using intensive mixers, and the feedstuffs preserved in this manner.
Abstract: A gene and gene structure coding for an aminotransferase, and microorganisms which express this gene.The preparation of L-2-amino-4-methylphosphinobutyric acid (L-PPT) by transamination of (3-carboxy-3-oxopropyl)-methylphosphinic acid with the aid of the L-PPT-specific transaminase from E. coli DH 1 is very much more efficient when the gene coding for this enzyme is isolated, incorporated into a plasmid and then a microorganism is transformed therewith.
Type:
Grant
Filed:
November 4, 1994
Date of Patent:
March 30, 1999
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Klaus Bartsch, Arno Schulz, Eugen Uhlmann
Abstract: The invention relates to a process for the production of modified SiO.sub.2 aerogels in whicha) a silicatic lyogel is prepared,b) if desired, the lyogel prepared in step a) is subjected to a solvent exchange with another organic solvent,c) the gel obtained in step a) or b) is reacted with at least one chlorine-free silylating agent, andd) the gel obtained in step c) is dried subcritically,wherein the chlorine-free silylating agent is a compound of the formula I ##STR1## wherein each R.sup.1 is identical or different and is selected from a group consisting of linear C.sub.1 -C.sub.6 -alkyl radicals, branched C.sub.1 -C.sub.6 -alkyl radicals, cyclohexyl radicals and phenyl radicals,R.sup.2, R.sup.3 and R.sup.4 are identical or different and are selected from the group consisting of hydrogen atoms, linear C.sub.1 -C.sub.6 -alkyl radicals, branched C.sub.1 -C.sub.6 -alkyl radicals, cyclohexyl radicals and phenyl radicals;and n=1, 2 or 3.
Abstract: Disclosed and claimed is a process for selectively separating hydrogen halides from sulfur-dioxide-containing gases by using an adsorbent made from a porous ceramic support material which is impregnated with an alkaline earth metal salt solution and, after evaporation of the solvent, the alkaline earth metal salt is pyrolysed at 200.degree. to 800.degree. C. to give alkaline earth metal oxide .Xh.sub.2 O, where x is a number from 0 to 1.
Type:
Grant
Filed:
February 25, 1997
Date of Patent:
March 30, 1999
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Ulrich Rappold, Wolfgang Schick, Jorg Schmid, Joachim Semel, Heinrich Merten, Matthias Schubert, Gerhard Luft
Abstract: The invention relates to insecticidal and acaricidal compositions of silafluofen and at least one entomopathogenic fungus, such as, for example, Beauveria bassiana.
Abstract: The invention relates to a process for preparing aromatic acetylenes of the formula (I): Ar--C.tbd.C--R.sup.8a, where Ar is: ##STR1## by reacting haloaromatics or aryl sulfonates of the formula (II): Ar--X, with monosubstituted acetylenes of the formula (III): Ar--C.tbd.C--R.sup.8a, where Ar is defined above and X is bromine, chlorine or OSO.sub.2 R, in the presence of a palladium compound catalyst of the formula (IV): ##STR2## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 are, independently of one another, hydrogen (C.sub.1 -C.sub.4)-alkyl, (C.sub.1 -C.sub.4)-alkoxy, fluorine, NH.sub.2, NH-alkyl-(C.sub.1 -C.sub.4), N(alkyl).sub.2 -(C.sub.1 -C.sub.4), CO.sub.2 -alkyl-(C.sub.1 -C.sub.4), OCO-alkyl-(C.sub.1 -C.sub.4), or phenyl, or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, R.sup.3 and R.sup.4, R.sup.5 and R.sup.6, together form an aliphatic or aromatic ring, and R.sup.7, R.sup.8 are (C.sub.1 -C.sub.8)-alkyl, (C.sub.3 -C.sub.
Type:
Grant
Filed:
April 26, 1996
Date of Patent:
March 23, 1999
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Matthias Beller, Claus Peter Reisinger, Wolfgang Anton Herrmann
Abstract: Nucleic acid constructs comprising an activator sequence, a promoter module, and a structural gene are disclosed. The promoter module comprises a a CHR region and a nucleic acid sequence that binds a protein of the E2F family. These constructs are used in gene therapy, such as the treatment of disorders characterized by excess cell proliferation.
Abstract: There are described polyester fibers and filaments which, following reaction with carbodiimides, have capped carboxyl end groups, the carboxyl end groups being predominantly capped by reaction with mono- and/or biscarbodiimides which are present in the fibers and filaments in an amount of from 30 to 200 ppm, based on the weight of the polyester, the free carboxyl end group content being less than 3 meq/kg of polyester, and the fibers and filaments additionally containing at least 0.02 percent by weight of at least one free polycarbodiimide or of a reaction product containing still reactive carbodiimide groups, and also a process for the preparation thereof.The filaments described are suitable in particular for producing papermaker's machine wire-cloths.
Type:
Grant
Filed:
October 25, 1996
Date of Patent:
March 23, 1999
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Gottfried Wick, Erhard Kruger, Herbert Zeitler
Abstract: The present invention relates to a process for preparing 4,5-dichloro-2-methylbenzoic acid and also its salts in high yields and in high purities by reacting 3,4-dichlorotoluene with acetyl chloride or chloroacetyl chloride in the presence of a Friedel-Crafts catalyst and subsequently oxidizing the acetylated intermediate to give the carboxylic acid.
Abstract: The use of isoxazole and crotonamide derivatives for the treatment of carcinomatous disordersThe compound of the formula I or II ##STR1## is suitable for the production of a pharmaceutical for the treatment of carcinomatous disorders, where R.sup.1 is (C.sub.3 -C.sub.5)-cycloalkyl, (C.sub.2 -C.sub.6)-alkenyl or (C.sub.2 -C.sub.6)-alkynyl, R.sup.2 is CF.sub.3, OCF.sub.3, SCF.sub.3, OH, NO.sub.2, halogen, benzyl, phenyl, CN or O-phenyl, R.sup.3 is (C.sub.1 -C.sub.4)-alkyl, halogen or a hydrogen atom and X is a --CH group or a nitrogen atom.
Type:
Grant
Filed:
October 16, 1996
Date of Patent:
March 23, 1999
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Wilfried Schwab, Jorg Czech, Klaus Boslett
Abstract: A photovoltaic cell having a charge transport layer comprising a hole conductor material is disclosed and claimed. The photovoltaic cell comprising a light absorbing layer having a semiconductor material with a bassed gap of at least 3.0 Ev, the surface of the semiconductor having a roughness of >20, optionally a sensitizer layer, a charge transport layer comprising one or more spiro compounds of the formula (I) as a hole conductor material ##STR1## where .PSI. is C, Si, Ge or Sn, andK.sup.1 and K.sup.2, independently of one another, are conjugated systems,and a counter electrode.
Abstract: 1,8-Difluoroisoquinoline derivatives of the formula (I)R.sup.1 (--M.sup.1).sub.a (--A.sup.1 --M.sup.2).sub.b (--A.sup.2 --M.sup.3).sub.c --B(--M.sup.4 --A.sup.3).sub.d (--M.sup.5 --A.sup.4).sub.e (--M.sup.6).sub.f --R.sup.2 (I)in which the symbols and indices have the following meanings: the group B is ##STR1## R.sup.1 and R.sup.2 are, for example, alkyl radicals having 1 to 20 carbon atoms;M.sup.1, M.sup.2, M.sup.3, M.sup.4, M.sup.5 and M.sup.6 are, for example, --O--, --CO--O--, --O--CO-- or a single bond;A.sup.1, A.sup.2, A.sup.3 and A.sup.4 are, for example, 1,4-phenylene, pyrimidine-2,5-diyl or trans-1,4-cyclohexylene, anda, b, c, d, e and f are zero or one, with the proviso that the sum of b, c, d and e is 0, 1 or 2.The compounds of the formula (I) are colorless in the pure state and generally form liquid-crystalline mesophases in a temperature range which is favorably located for electro-optical use. They are stable chemically, thermally and to light.
Abstract: Compounds of the formula I ##STR1## are described in which at least one of the substituents R(1), R(2), R(3), R(4) and R(5) is a nitrogen-containing heterocyclic radical. They are outstanding cardiovascular therapeutic agents. They are obtained by reaction of a compound II ##STR2## with guanidine.
Type:
Grant
Filed:
July 24, 1996
Date of Patent:
March 16, 1999
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Jan-Robert Schwark, Joachim Brendel, Heinz-Werner Kleemann, Hans Jochen Lang, Andreas Weichert, Udo Albus, Wolfgang Scholz
Abstract: A process for the separation of dimethyl ether and chloromethane in mixturesA process for the separation of dimethyl ether and chloromethane in mixtures by two distillation steps. In the first step, the mixture is subjected to an extractive distillation with water, aqueous salt solutions or organic liquids as extractant, the top product being chloromethane. In the second step, the dimethyl ether is separated from the extractant.
Type:
Grant
Filed:
June 23, 1997
Date of Patent:
March 16, 1999
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Peter Roth, Erhard Leistner, Hans Haverkamp, Wolfgang Wendel, Michael Kleiber
Abstract: L-PTC (L-phosphinothricin, L-2-amino-4-methylphosphino-butyric acid) is the active herbicidal component of D,L-PTC and can be obtained according to the invention when D,L-PTC derivatives which are N-acylated and esterified on the phosphinic acid group as well as optionally esterified or amidated on the carboxylic group, are treated with a hydrolytically active enzyme in an aqueous or aqueous-organic medium, in which process the L-PTC derivatives are selectively hydrolyzed on the N-acyl group or the modified carboxyl group, the resulting product mixture is resolved, and the desired L-PTC derivative is hydrolyzed to give the L-PTC and isolated by customary methods.
Type:
Grant
Filed:
January 5, 1998
Date of Patent:
March 9, 1999
Assignee:
Hoechst Aktiengesellschaft
Inventors:
Lothar Willms, Gerd Fulling, Reinhold Keller