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Patent Searching and Data


Matches 651 - 700 out of 4,584

Document Document Title
WO/1997/024303A1
A method for efficiently purifying a particular substance contained in a raw material mixture, comprising the steps of: (1) subjecting the raw material mixture in a liquid form or a slurry form wherein part of the particular substance ha...  
WO/1997/018879A1
A process for supercooling a liquid or solid wherein the solid or liquid is placed in contact with a coolant, the coolant having a temperature of at or just above the metastable limit temperature of the liquid or solid.  
WO/1997/014777A1
A method for crystallising fat to enable later fractionation, in particular by pressure filtering, wherein the fat is melted, the molten mass is divided into beads, the beads are fed into a pre-refrigerated aqueous solution, the fat conc...  
WO/1997/007121A1
Processes for the depletion of 7-ADCA in mixtures of vinyl-ACA with 7-ADCA via novel salts of vinyl-ACA or via chromatography.  
WO/1996/032095A1
A process for producing a pharmaceutical powder for inhalation comprising crystalline particles of an inhalation compound, comprising dissolving an inhalation compound in a solvent; and introducing the solution containing the inhalation ...  
WO/1996/026781A1
A method of controlling the crystallization of biopolymers such as proteins, which comprises bringing into contact with a biopolymer-containing buffer solution (14) a silicon crystal (15) with the valence electrons thereof so controlled ...  
WO/1996/027028A1
The invention relates to a method for the recovery of xylose from xylose-containing aqueous solutions containing 30-60 % by weight of xylose on dissolved solids, in which method the solution is treated to produce a solution supersaturate...  
WO/1996/027029A1
The invention relates to a method for recovering a crystallisable organic compound from solutions containing said compound. In accordance with the method, the compound is crystallized substantially by way of nucleation from a solution ha...  
WO/1996/022262A1
A method for producing para-xylene from a xylene-containing feedstock, wherein a first fraction is enriched to at least 30 wt.% with para-xylene, and said fraction is purified by means of at least one high-temperature crystallisation ste...  
WO/1996/020908A1
Process for producing very pure paraxylene from a charge containing a mixture of aromatic hydrocarbons having from 7 to 9 carbon atoms, wherein is circulated at least a portion of the charge in a zone adapted to enrich a first fraction w...  
WO/1996/020907A1
Method for the separation of high purity paraxylene from a charge containing xylene isomers comprising the steps of selective adsorption (8) of a paraxylene-rich fraction, at least one stage for crystallizing (5a) said fraction at a high...  
WO/1996/019421A1
In a chemicals crystallisation process, chemicals are at first molten then introduced into a container where they crystallise by heat extraction, are conveyed through the container and collected as a product. The process is characterised...  
WO/1996/018597A1
Crystallization of adipic acid using low intensity ultrasonic agitation during crystallization results in purer product that is more readily handled. Apparatus for carrying out the process is also disclosed.  
WO/1996/014449A1
A surface-cooled fluid bed crystallizer apparatus (10) and method are disclosed wherein submerged heat exchanger surfaces (typically heat exchanger tubes (14) or plates through which a coolant is passed) are bathed with a stream of gas b...  
WO/1996/013316A1
The invention relates to a process and apparatus for the preparation of open macropore crystals from solution by using a desalting in gas form, wherein the transformation of the desalting agent into gas-form is implemented from a solutio...  
WO/1996/007461A1
The invention concerns the exploitation of the process of initiating and/or accelerating and/or controlling crystallization or precipitation in supercooled melts or supersaturated solutions of solids. A problem frequently encountered wit...  
WO/1996/005279A1
A pseudo-steady state fractionation of a polymorphic fat, resulting in a product which is in a kinetically stable crystal form is performed in a way that a 'sigma'-value is maintained below 0.5, formula (I) wherein Sc being: the percenta...  
WO/1995/035475A1
An orbital rod drive arrangement for an orbital tube whip rod heat exchanger includes a single drive plate (12) driving a plurality of countercranks (18), each countercrank (18) supporting a whip rod (24) from its upper end within a tube...  
WO/1995/032040A1
A method of producing sodium carbonate from trona including the steps of passing a solution containing trona (14) to a precipitator (17), adding alcohol (16) to the solution in the precipitator so as to precipitate carbonate from the sol...  
WO/1995/030466A1
A process and device are disclosed for separating substances by crystallization of molten material. In order to bring about crystallization, the molten material is fed into the gap between two opposing moving walls which can be cooled; t...  
WO/1995/030478A1
Wash columns as used to remove impurities from the residual melt from melt crystallization are of limited efficiency due to the fact that the crystal mass normally fed in contains solids of different sizes, which partially also tend to a...  
WO/1995/026947A1
This invention is a crystallization process for p-xylene recovery. A single temperature crystallization stage (18) is used for producing p-xylene from a feed having an above equilibrium p-xylene concentration, such as from toluene dispro...  
WO/1995/026931A1
An installation for the targeted formation of germs or crystals on the surface of a dielectric in contact with a solution, especially on the functional groups of a polymer, in which there is a device for generating an electric field in t...  
WO/1995/018086A1
A method for recovering crystalline 2-6-dimethylnaphthalene comprising crystallizing in a scraped-wall crystallizer apparatus at crystallization temperature T, a mixture of low melting components (LM), having melting points of 70 �F an...  
WO/1995/013132A1
A method for providing aerogels, and aerogels produced according to the method, is described. As one aspect, antiperspirant compounds that are in aerogel form, and antiperspirant and deodorant compositions including such salts, are descr...  
WO1995004123A3  
WO/1995/004583A1
Methods and reaction systems are disclosed that are adapted for forming crystallites having novel crystal habits and/or morphologies compared to conventional crystallites of the same chemical composition. The methods and reaction systems...  
WO/1995/004123A2
Triglyceride oil crystallisation modifying substance being membrane lipids which are comprised by the groups (I) lipids having the formula C13H27-CH=CH-CH(OH)-CH(NHCOR2)-CH2-OR4, C13H27- is an unbranched alkyl chain, R4 is hydrogen or R3...  
WO/1994/022546A1
A method and a device for recovering crystals from a solution by evaporation with crystallisation in an evaporation plant having at least two stages are disclosed. In the method, the crystallised salt is separated in each evaporation sta...  
WO/1994/019083A1
This invention provides a process for preparing high purity and large size crystals by eliminating fine crystals in crystal slurry in a crystallizer, characterized in: mounting two filters (4, 6) in the crystallizer (5); discharging part...  
WO/1994/019082A1
A slurry containing crystals in an impurity-containing mother liquor under elevated pressure and temperature conditions is processed to separate the crystals from the mother liquor. The processing comprises highly efficient separation an...  
WO/1994/016362A1
The present invention is directed to a method for the recovery of erythorbates from photographic solutions. In the disclosed method, the photographic solution is first acidified by passing it over an acidic cation exchange resin and the ...  
WO/1994/013630A1
A process for obtaining carbamide involves synthesizing carbamide from initial components and crystallizing the resulting aqueous solution of carbamide until the supersaturation temperature of the solution is reached while simultaneously...  
WO/1994/012460A1
A process is disclosed for the production of a product which is enriched in a desired enantiomer of a phenylpropionic acid selected from ibuprofen and flurbiprofen, or their pharmaceutically acceptable salts, which comprises the followin...  
WO/1994/007582A1
There is disclosed a dual jet crystallizer apparatus comprising a crystallization or mixing chamber (10) having opposed angularly disposed arms (11) which removably receive jet nozzles (13). One end of the chamber is provided with means ...  
WO/1994/002453A1
(S)-N5-[Imino(methylamino)methyl]ornithine hydrochloride, pharmaceutical compositions containing it, its us in medicine and its preparation is described.  
WO/1993/024441A1
A process for the production of purified terephthalic acid (PTA) from crude terephthalic acid (CTA) comprising mixing the CTA with an aqueous medium to form an aqueous CTA mixture, heating the mixture to dissolve substantially all of the...  
WO/1993/019826A1
In a continuous crystallization process employing an evaporative draft tube baffle (DTB) crystallizer apparatus to produce crystal product, the improvement which is feeding at constant rate to the body of slurry a suspension of crystals ...  
WO/1993/018359A1
In this system, an absorption solution consisting of a common salt and water is circulated through the Immediate Heat Upgrading Absorption (IHUA) air handlers (1a, 1b, 1c, 1d) to upgrade heat taken from a first air mass or water and rele...  
WO/1993/006065A1
Described are a method and a device for reducing the grain size of crystalline explosive. The coarse-crystalline explosive is first dissolved in an organic solvent. The dissolved explosive is subsequently transferred to a precipitation v...  
WO/1992/020420A1
The invention provides a method of solidifying a liquid including the steps of reducing the temperature of the liquid below its melting point and subjecting the liquid to a physical disturbance, preferably irradiating the undercooled or ...  
WO/1992/020760A1
Waxy liquid hydrocarbons can be dewaxed employing autorefrigerative dewaxing solvents such as C2-C4 aliphatic hydrocarbon solvents, preferably propane, propylene, butane, butylene, and mixtures thereof, by using a centrifuge (3) as the d...  
WO/1992/012392A1
The invention described is an apparatus for heating or cooling solid suspension slurry. The apparatus comprises a vessel (1) for containing the slurry and a draft means contained within a draft section of a draft tube (2) to circulate an...  
WO/1992/004429A1
A process for separating undesired foreign substances from vegetable, animal and maritime oils and fats. During refining or fractionated crystallisation, an electrostatic field is generated in the oil to be treated by means of at least o...  
WO/1992/000130A1
A method and an apparatus for crystallizing a mineral substance in a fluidized bed of crystals (14) generated by circulating a supersaturated solution of the substance to be crystallized upwards through a fluidized bed reactor distributo...  
WO/1991/013301A1
This invention introduces an absorption vapor pressure enhancement operation. In the process, a mass of solvent vapor is absorbed into an absorbing solution under a first pressure and an equivalent amount of second vapor is produced unde...  
WO/1991/013300A1
A Multiple Phase Transformation Absorption Melting Process (MPTAM Process) comprises a step of subjecting a feed solution to simultaneous vaporization and freezing operation, denoted as multiple phase transformation operation, to thereby...  
WO/1991/006682A1
In the horizontal-throughput sugar-crystallization equipment used in the process of the invention, the individual digester chambers are separated by partition walls whose upper edges extend into the vapour space, and the zones in which c...  
WO/1991/004777A1
A crystal refining apparatus of a vertical type, wherein a plurality of screw vanes are provided, the screw vanes have crystal refining tubes rotating in directions opposite to each other, and contained solid crystalline materials are re...  
WO/1991/001785A1
An evaporator in the form of a vacuum pan has partitions (38) providing a plurality of compartments (42, 46) between an inlet and outlet. The compartments increase in volume from the inlet to the outlet, each compartment having at least ...  

Matches 651 - 700 out of 4,584