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Patent Searching and Data


Matches 1,851 - 1,900 out of 7,133

Document Document Title
WO/2000/061527A2
Enhanced synthesis of transition metal dithiolene complexes is described. [1,2-bis(Trifluoromethyl)ethylene-1,2-dithiolato]nickel selectively and reversibly binds olefins (C¿2? to C¿6?). Under the same conditions, the complex does not ...  
WO/2000/056417A1
The invention relates to a method of separating substances according to which a substance containing at least a first and a second component are introduced, together with a wash fluid, into a container having at least one settling chambe...  
WO/2000/054881A1
The invention provides a complexant for complexing an anion, particularly, but not exclusively, a pertechnetate anion. The complexant has at least one cation binding site and, when said at least one cation binding site is occupied by a c...  
WO/2000/053540A1
An apparatus for continuously calcining gypsum includes a flash calcining impact mill, a feed bin adjacent the impact mill for holding gypsum, and a gypsum feed control mechanism for supplying gypsum from the feed bin to the impact mill ...  
WO/2000/052118A1
The invention relates to a method for treating an oil using a liquid in a supercritical state. The invention relates more specifically to a method for refining an oil in order to separate the pollutants therefrom and to recover a refined...  
WO2000019833A9
Typical current methods for producing large quantities of extracts from solid raw materials such as ground, roasted coffee are designed for exhaustive extraction. Such methods are not ideally suited to producing high quality coffee extra...  
WO/2000/048201A1
Methods for decontaminating toxic waste, particularly solid carrier materials, such as soil contaminated with a toxin, or solid mixed wastes are more efficiently decontaminated with solvated electrons by first extracting the toxin from t...  
WO/2000/043471A1
The present invention relates to a method of extracting and concentrating oils from materials in which the oils are already dispersed. More particularly, the present invention is concerned with the extraction of fixed oils or mineral oil...  
WO/2000/043353A1
The invention relates to a method for reducing the content of 3-dimethylamino-2-phenylpropionic acid ethyl ester in a solution that is contaminated therewith, whereby the solution is 2-dimethylamino-1-phenyl-3-cyclohexene-1-carboxylic ac...  
WO/2000/042051A1
The invention concerns novel calixarenes of formula (I) wherein: R?1¿ and R?2¿, identical or different, are alkyl, alkoxy or aryl groups; and n is an integer equal to 2, 3 or 4. Said calixarenes are very useful for extracting actinides...  
WO/2000/040257A1
The present invention pertains to the field of medicine and essentially relates to antitumoral agents as well as to methods for producing the same. This agent contains products from the alkaline hydrolysis and the oxidation of lignin, po...  
WO/2000/040598A1
A method for the separation of a predetermined compound comprising i) partitioning the compound in a two-phase system (system A) in which at least one of the phases is rich (phase 1) and the other is poor (phase 2) in a thermoseparating ...  
WO/2000/039138A1
A process for the purification of nucleosides, and more particularly to a selective solvent extraction method for purifying protected nucleosides. In the purification process, solid particles of protected nucleosides are selectively wash...  
WO/2000/039350A1
The invention relates to a method for extracting anions based on metals of the V group to the VII group of the periodic table from the aqueous solution thereof. To this end, compounds or general formula (I) are used as an extracting agen...  
WO/2000/037361A1
This invention relates to a process for purifying a heteropolyacid which comprises: subjecting an aqueous solution comprising (i) the heteropolyacid and (ii) salt impurities to at least one liquid/liquid extraction step with an organic s...  
WO/2000/037420A1
A method for efficient removal of lead co-catalyst species from organic process streams arising from diaryl carbonate synthesis, by contacting the organic reaction mixtures with an aqueous acid, salt, or acid/salt solution, thereby extra...  
WO/2000/035837A1
Methods and compositions for improving the extraction of phenols from crude styrene using an aqueous caustic solution are disclosed. It has been discovered that aromatic or alkylammonium tailed multi-polyether headed surfactants and/or q...  
WO/2000/036167A1
A solvent extraction composition is provided which comprises one or more orthohydroxyarylaldoximes or orthohydroxyarylketoximes and one or more esters substituted with a hydroxyl group, and preferably a water immiscible organic solvent. ...  
WO/2000/033050A1
An apparatus for carrying out liquid-liquid micro extraction or liquid-liquid-liquid micro extraction with high enrichment comprises: a) a container for a sample solution having volume Vs with dissolved substance, analyte, to be analysed...  
WO/2000/029096A1
A process and apparatuses (10) are provided for continuously harvesting particles from organic solution-laden near critical and supercritical fluids. Broadly, the processes and apparatuses utilize a filter or separator (56) comprising a ...  
WO/2000/027601A1
In impregnating or extracting treatments of resin-containing wood substrates using a resin-soluble supercritical fluid as delivering or extractive solvent medium problems due to exudation of resin from the wood substrate at pressure rele...  
WO/2000/028553A2
The invention relates to a method for disposing of metal cations by binding them to a cationic exchange resin. The aim of the inventive method is to reduce the valency of the metal which produces the metal cations to the smallest possibl...  
WO/2000/025882A1
A method described in the present invention is for reducing the size of the steps in the solvent extraction process. The first and last extraction cells of the extraction step are equipped with a conventional settler unit and at least on...  
WO/2000/025802A1
The present invention relates to a pharmaceutical composition having antitumor activity and comprising Pulsatillae Radix and/or Ulmaceae cortex, and more particularly the composition may be prepared by extracting powdered Pulsatilla Radi...  
WO/2000/024491A1
In order to remove a component from solid particle material by extraction, use is made of a column with one or more tubes which extend between the ends of the column, at least one filter being fitted in the wall of each tube. The particl...  
WO/2000/024490A1
The method for obtaining natural substances by means of extraction from natural solid raw materials with liquid solvents and method for the production of chitin or chitosan from natural solid raw materials by treatment with one or severa...  
WO1999058611B1
A process for extracting carotenes from carotene-containing materials, in particular from fats and oils of biological origin, which provides for extraction of said carotene-containing material with an extractant comprising at least one m...  
WO/2000/020140A1
A supercritical fluid is formed by heating a liquid-state water (13) sealed along with a circuit member (30) into an airtight container (2) by an internal heating means (4) to heat the water (13) to not lower than a preset temperature an...  
WO/2000/016789A1
The invention relates to a method for removing undesirable toxic alkaloids, including the precursors and derivative products of said compounds, from plants or vegetable preparations. Said method is characterized in that: in a first step ...  
WO/2000/015331A1
This invention provides a one-piece multilayer article for use in solid phase extraction that includes at least two porous support layers and a solid phase extraction medium, wherein the porous support layers are thermo-mechanically atta...  
WO/2000/013782A1
The invention concerns a device (DME) or panel for collecting, distributing, mixing or extracting several fluids, at least one main fluid and two secondary fluids, comprising at least: means for collecting a main fluid (3, 9); at least t...  
WO1999048501A9
The invention concerns voacamine as anti-malarial agent active against Plasmodium falciparum strains, including the resistant strains, as well as an anti-malarial agent containing as main active principle voacamine. A basic Pescheria ext...  
WO/2000/014052A1
A modified water-immiscible solvent useful in the extraction of acetic acid from aqueous streams is a substantially pure mixture of isomers of highly branched di-alkyl amines. This solvent is substantially devoid of mono-alkyl amines and...  
WO/2000/012470A1
An improved process for decomposing alkyl or aromatic hydroperoxides to form a decomposition reaction mixture containing the corresponding alcohol and ketone is disclosed. The improvement relates to adding water to a starting hydroperoxi...  
WO/2000/010674A1
The present invention is directed to a method of determining the ratio of the concentration or amounts of two or more chemical compounds and/or biopolymers, or of the relative amounts of sub-populations of closely structurally related co...  
WO/2000/006616A1
A continuous, preferably counter-current, extraction process that can be used to significantly reduce the concentrations of residual monomers, residual catalyst, undesired solvents, and other impurities in polymer compositions. The inven...  
WO/2000/003950A1
A method for preparing nanoparticles for use, from a mixture of nanoparticles with another material, the method comprising washing the mixture with a solvent in which the nanoparticles are soluble to remove the said other material and fo...  
WO/2000/000265A1
The present invention involves a simple, disposable, manual filtration and extraction device and method of use that provides a sample directly to an analytical method. The device is capable of providing a clarified liquid ready for analy...  
WO/1999/065504A1
The invention relates to a method of extracting a compound from vegetable material, wherein the vegetable material is reduced and treated with a solvent. According to the invention, the vegetable material is frozen using a liquid nitroge...  
WO/1999/064027A1
An extract of $i(Hypericum perforatum) obtained by fractioning water-alcoholic, alcoholic or acetonic extracts of the plant with water-immiscible esters of C¿1?-C¿5? alcohols.  
WO/1999/063545A2
Nuclear fuel dissolution apparatus comprises a perforated sloping ramp (6) located within a process chamber (1). A pulsation member creates pulses in the solvent in the container, and the perforations of the sloping ramp are designed to ...  
WO/1999/057217A1
The invention concerns fluids that have a low reactivity with respect to ozone formation, blends thereof, and the replacement of conventional industrial solvents with said fluid or fluid blends in order to reduce tropospheric ozone forma...  
WO/1999/051315A1
The invention relates to a liquid-liquid extraction device, whereby the solvent phase is the light phase and the raffinate phase is the heavy phase. The inventive device comprises a mixer-separator battery in the form of a tower. The mix...  
WO/1999/051364A1
A separation method includes (a) providing a heterogeneous separation system, the heterogeneous cleaning system comprising CO¿2? in a first phase and an oil in a separate second phase; (b) entraining a material to be separated in the se...  
WO/1999/051795A1
The invention relates to a method for preparing alkaline etching solutions containing metal, whereby a liquid-liquid extraction is carried out, the etching solution forms a heavy phase, an organic solution forms a light phase and the met...  
WO/1999/047190A1
A method and system for use in the course of extracorporeal blood flow, e.g., cardiopulmonary bypass, dialysis, and angioplasty procedures, in order to reduce or minimize inflammation, excessive bleeding, and other undesirable side effec...  
WO/1999/044733A1
A method for forming particles of a substance, comprising: (a) preparing a solution or suspension (6) of the substance in a vehicle; (b) introducing the solution or suspension into a particle formation vessel (1) via a fluid inlet means ...  
WO/1999/043407A1
The invention relates to a method for extracting polyamide particles or polymer particles which contain polyamides with aqueous extraction agents. According to the invention, aqueous solutions of amino nitriles and optional additional mo...  
WO/1999/042601A1
A process for the isolation and purification of HMG-CoA reductase inhibitors from a mycelium biomass is described, which process comprises: clarifying a mycelium broth and concentrating the clarified broth to a lower volume, acidifying o...  
WO/1999/038392A1
The invention relates to a method and a device for extracting plant ingredients, especially for extracting plant ingredients in a pure form which is free from decomposition products, secondary products and/or undesirable components.  

Matches 1,851 - 1,900 out of 7,133