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WO/1994/024141A1 |
Sugar surfactants with an improved scent can be produced by treating mixtures containing (a) alkyl and/or alkenyl oligoglycosides of formula R1O-[G]p where R1 is an alkyl or alkenyl group with 4 to 22 carbon atoms, G a sugar residue with...
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WO/1994/024092A1 |
The invention concerns fatty-acid amides obtained by condensing fatty acids or esters of fatty acids with polyfunctional amines, partially neutralizing unreacted amino groups with acid and adding dispersion accelerators of formula (III) ...
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WO/1994/022794A1 |
A process for the purification of a perfluorochemical composition comprises continuously mixing the perfluorochemical composition, comprising a liquid mixture of inert perfluorochemicals (e.g., perfluoroalkalenes, perfluoroethers, perflu...
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WO/1994/020493A1 |
A method for preparing N-methyl-2-(3-pyridyl) (1R,2R)-2-tetrahydrothiopyrancarbothioamide-1-oxide of formula (I) from a sel of a mixture of trans isomers (1S,2S) and (1R,2R) with an optically active acid.
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WO/1994/020143A1 |
An inhibitor comprising an antioxidant and usable for inhibiting the optical isomerization of optically active drugs.
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WO/1994/020187A1 |
A process is disclosed for intensifying and/or accelerating the distillative separation of mixtures of multiple substances by using a steam flow (5, 7) which allows the steam-volatile parts of the substances to be removed more easily (st...
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WO/1994/019301A1 |
The invention generally relates to a process for the purification of a component of a binary azeotrope in which the composition of the azeotrope changes by about 10 mole percent with pressure comprising: a) subjecting a binary azeotrope ...
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WO/1994/012275A1 |
Optically active adsorbents based on network polymerised derivatives of dicarboxylic acids, diamines or diols which are chemically bonded to a carrier. The derivatives can be polymerised by radical polymerisation or through hydrosilylati...
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WO/1994/007881A1 |
Method of obtaining 10-deacetylbaccatine III from different parts of the yew tree (Taxus sp.) by extraction using a suitable organic solvent of the aqueous solution obtained after treatment of the appropriate part of the yew with water o...
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WO/1994/003419A1 |
A process is disclosed for separating components of an azeotropic or azeotrope-like mixture containing only organic compounds at least one of which compound is a halocarbon comprising contacting said azeotropic or azeotrope-like mixture ...
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WO/1994/003423A1 |
The colour of surfactants can be improved by bleaching them with peroxygen compounds in the presence of bleach boosters selected from the group comprising (a) double-layer hydroxides and (b) triacetin.
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WO/1994/000455A1 |
The present invention relates to a composition having general formula (I), wherein each of A, B, C, X, Y, and Z is independently O, NH, N(CH2)mCH3, N(C=O)(CH2)mCH3, CH2, S, or Se; each of R1, R2, and R3 is indepently phenyl, 4-hydroxyphe...
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WO/1993/025635A1 |
A method of removing halogenated aromatic compounds contained in small amounts in a hydrocarbon oil comprising mainly nonaromatic hydrocarbon oils safety without fail. The method comprises bringing the hydrocarbon oil into contact with a...
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WO/1993/025557A1 |
A process for the preparation of clavulanic acid or its pharmaceutically acceptable salts and esters in which an amine of formula (II) is used as an intermediate to form a salt with clavulanic acid, R1, R2 and R3 being selected from vari...
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WO/1993/024206A1 |
Removal of organic compounds from a water stream (3) involves gas stripping in gas stripper (1), followed by membrane separation of the stripping gas containing the organic compound (5) in membrane separator (2). Stripping can be carried...
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WO/1993/022260A1 |
Additives are proposed for compositions comprising radiolabelled organic compounds e.g. 32P-labelled nucleotides. Stabilisers are selected from tryptophan, para-aminobenzoate, indoleacetate and the azole group. Dyes are selected from Sul...
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WO/1993/022269A1 |
3(S)-methylheptanoic acid is prepared by fractional crystallization of the salt of racemic 3-methylheptanoic acid with (S)-alpha-methylbenzyl amine followed by acidification.
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WO/1993/020168A1 |
A method of controlling oxidation of a chemical or chemical preparation during storage, which entails contacting the chemicals or chemical preparations with at least one noble gas, a mixture of noble gases or a gaseous mixture containing...
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WO/1993/020042A1 |
The invention relates to a new process for obtaining a completely pure oxytetracycline which does not contain any acetyldecarboxamidooxytetracycline as ingredient. In glacial acetic acid there is suspended under stirring oxytetracycline ...
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WO/1993/016970A1 |
A method of separating isomers of functionalized aromatic compounds using solvent-modified supercritical carbon dioxide is disclosed and claimed. In one embodiment, isomers of hydroxynaphthoic acid are separated by selective extraction o...
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WO/1993/017055A1 |
Polymer particles having a hydrophobic core and various surface functional groups, particularly hydrophilic and chiral surface functional groups, are produced by adding a non-emulsified functional polymerizable monomer to the aqueous pha...
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WO/1993/015823A1 |
A method of separating high-purity carbon monoxide from a gas mixture by using a novel absorbent containing a complex composed of cuprous chloride and m-toluidine and a glycol ether solvent. The absorbent is so stable against water that ...
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WO/1993/013053A2 |
A process for obtaining an isomer of a compound of the general formula (I): R-CH(CN)-R', wherein each of R and R' may be any organic radical linked directly or through a heteroatom to the carbon atom bearing the cyano group provided that...
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WO/1993/012066A1 |
Described is a method of recovering, in a pure, substantially neutral state, non-volatile organic compounds containing reactive olefinic double bonds from a starting liquid mixture containing such compounds, together with lesser amounts ...
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WO/1993/008903A1 |
A process is disclosed for separating enantiomers by an electrokinetic process in capillary columns, using surface-immobilized chiral components. The chiral component used may be a polysiloxane to which alkylated cyclodextrine (alpha, be...
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WO/1993/007104A1 |
A carrier and a column for high-performance liquid chromatography having an ability to separate optical isomers. A separating agent for optical isomers is prepared by chemically bonding conalbumin to a carrier such as silica gel or synth...
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WO/1993/007118A1 |
The invention concerns 9-substituted bicylo[3.3.0]octane derivaties of formula (I) and their physiologically acceptable bases, and also the $g(a)-, $g(b)- or $g(g)-cyclodextrin clathrates, and the compounds of formula (I) encapsulated in...
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WO/1993/005004A1 |
A compound represented by general formula (I) and a separating agent comprising the same. In formula (I), Ar and Ar' represent each an aromatic group and two substituents on the central benzene ring may be positioned ortho, meta or para ...
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WO/1993/002028A1 |
A polymerization inhibitor of vinyl-containing compounds consists of the product of interaction between 4-(dimethylamino)methyl-2,6-bis-(trebutyl)phenol and a non-organic acid or carbonic acid or an anhydride of an organic acid. The weig...
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WO/1993/001167A1 |
Compounds of formule (I), salts thereof, the preparation thereof, and drugs containing same.
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WO/1992/016276A1 |
A process for the purification of an HMG-CoA reductase inhibitor employing preparative high performance liquid chromatography as well as a pharmaceutical composition comprising the HMG-CoA reductase inhibitor and pharmaceutically accepta...
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WO/1992/015527A1 |
A novel crystalline potassium salt of thionicotinamide-adenine dinucleotide phosphate (thio-NADP), which is nonhygroscopic and does not deliquesce even in contact with air and hence can be used as a reagent for study and diagnosis for lo...
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WO/1992/012947A1 |
Inhibition of popcorn polymer growth by treatment with a compound including a Group IV element, and at least one hydrogen bonded to the Group IV element. This compound can be admixed with organic material from which popcorn polymer is fo...
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WO/1992/012948A1 |
Inhibition of popcorn polymer growth by treatment with an alkyl halide. This compound can be admixed with organic material from which popcorn polymer is formed, or added to a system for the recovery, use or storage of such organic material.
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WO/1992/013041A1 |
Inhibition of popcorn polymer growth by treatment with an inorganic acid ester. This compound can be admixed with oganic material from which popcorn polymer is formed, or added to a system for the recovery, use or storage of such organic...
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WO/1992/012949A1 |
Inhibition of popcorn polymer growth by treatment with a sulfur-containing compound. The sulfur-containing compound can be added to organic material from which popcorn polymer is formed, or applied to extant popcorn polymer.
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WO/1992/012180A1 |
Novel cyclodextrin and epichlorohydrin based polymers are obtained by adding an epoxy-ammonium salt to a cyclodextrin-epichlorohydrin polycondensate wherein the ratio of cyclodextrin to epichlorohydrin is 1:3 to 1:10 and the proportion o...
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WO/1992/010448A1 |
Raffinate yield from solvent extraction is improved when the extract phase (5) recovered from the solvent extraction process (2) is subjected to a membrane separation step (6) wherein a saturates/1-ring aromatics rich retentate (8) is pr...
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WO/1992/006058A1 |
A system of recovering at least one low molecular weight chemical compound carried in the high pressure effluent fluid stream from supercritical fluid extraction. This effluent stream flows through a heated capillary conduit (52) prefera...
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WO/1992/002283A1 |
The media is an ether derivative of cyclodextrin such as a permethylated hydroxy ether of cyclodextrin or a dialkyl trifluoroacetyl ether derivative of cyclodextrin and is used in capillary gas chromatographic columns. Particular benefit...
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WO/1992/002494A1 |
The invention relates to cyclopentane derivatives of formula (I) in which there is a double bond between the carbon atoms of centres a-b or b-c, and their salts with physiologically tolerable bases, and $g(a), $g(b) or $g(g)-cyclodextrin...
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WO/1992/000799A1 |
A conglomerate of controlled relative density carrying or for carrying at least one active substance for use in a fluid, a method of producing said conglomerate, a fluid bed reactor using such conglomerates, and use of said conglomerate ...
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WO/1992/000983A1 |
This invention relates to safe and effective methods for the extraction of nucleic acids. In particular, methods are described for isolating nucleic acid from a sample containing a biological mixture of nucleic acids and other biological...
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WO/1991/018909A1 |
A process for removing double metal cyanide complex catalyst residues from a catalyst-residue containing polyol characterized by: (a) treating a double metal cyanide complex catalyst-residue containing polyol with an alkali metal alkoxid...
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WO/1991/018091A1 |
A method of preserving delicate biological substances or organic compounds (a) in a dry state and/or (b) at elevated temperatures and/or (c) under irradiation comprises incorporating in a system containing the said substances or compound...
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WO/1991/017816A1 |
The invention relates to a process for the high yield, cost efficient means of separating enantiomers. The process utilizes a supported liquid membrane and a chiral carrier which selectively complexes with one of the two enantiomeric opt...
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WO/1991/015449A1 |
A catalytic reaction process which involves exposing a hydrocarbon feed including nitrogenous contaminants as well as dialkyl sulfides to a material capable of adsorbing the nitrogenous contaminants as well as dialkyl sulfides from the f...
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WO/1991/004980A1 |
In a method for distillative separation of alcohols with chain lengths of up to 30, preferably 8 to 18, carbon atoms from a mixture of alkyl glycosides and alcohols which have not reacted during the manufacture of these alkyl glycosides,...
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WO/1991/003442A2 |
In a process for separating mixtures of partially fluorinated or perfluorinated hydrocarbon compounds which possibly contain other chain members from the group of heteroatoms: nitrogen, oxygen, boron, phosphorus and sulphur and/or can be...
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WO/1991/002727A1 |
In a process for safe and complete destruction of the cyanuric floride in residues produced during the manufacture of cyanuric fluoride by reacting cyanuric chloride with alkali metal fluorides in dipolar aprotic solvents, which still re...
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