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WO/2003/020245A1 |
Methods for preparing microparticles having reduced residual solvent levels, Microparticles are contacted with a non-aqueous washing system to reduce the level of residual solvent in the microparticles, Preferred non-aqueous washing syst...
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WO/2003/011913A1 |
A polymerization method which comprises mixing a first liquid with a second liquid in a gas phase to polymerize the monomer(s) in a droplet state, characterized in that a polymerizable monomer and a polymerization initiator are contained...
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WO/2003/000741A1 |
A method for preparing resin particles wherein a liquid comprising a polymerizable monomer is discharged into a continuous phase as a dispersed phase and subjected to mechanical vibration, to thereby break it up into droplets, and the dr...
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WO/2002/092499A1 |
A method for liquid phase reforming, characterized in that a pulse discharge of electricity is carried out in a liquid containing a hydrocarbon or an oxygen-containing compound and water, thereby reacting the hydrocarbon or the oxygen-co...
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WO/2002/088372A1 |
The invention relates to a method and a device for producing an aqueous acrylamide solution by the hydration of acrylnitrile in an aqueous solution in the presence of a biocatalyst.
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WO/2002/055465A1 |
A method for carrying out a reaction of one substance capable of being activated by a catalyst with another substance capable of reacting with said one substance activated, characterized in that the substance capable of being activated i...
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WO/2002/053277A1 |
The invention concerns a device for carrying out a reaction in liquid medium during which there is gas evolution. The inventive device comprises at least: a static mixer (3) wherein emerges at least a pipe (1) supplying liquid medium; a ...
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WO/2001/064333A2 |
A tubular reactor (1) characterized by having short static mixing elements (1, 2, 3, 4, 5, 6, 7, 8, 9, 10) separated by coalescing zones (20, 21, 22, 23, 24, 25, 26, 27) is used to conduct multiphase liquid/liquid reactions. Small drople...
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WO/2001/060490A1 |
Vertical extending liquid/liquid contacting column, which column will, when in use, contain a dispersed and a continuous liquid phase, the column having a top liquid feed inlet, a top liquid outlet, a bottom liquid feed inlet, a bottom l...
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WO/2001/055069A2 |
The invention relates to a method for obtaining formic acid which is completely free of water or free of water to a large extent. Aqueous formic acid is produced first by hydrolysing methyl formate and then liberated from the water in su...
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WO/2001/055070A2 |
The invention concerns a method for the production of anhydrous or substantially anhydrous formic acid. The method is characterized in that a liquid of general formula (I) that is used as extracting agent is also used as washing liquid f...
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WO/2001/045830A1 |
An apparatus comprising a reaction vessel for accommodating a first phase and at least one membrane for accommodating a second phase, the membrane being adapted to rotate thereby creating a centrifugal force within the second phase so th...
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WO/2001/038402A1 |
The invention relates to a method for continuously producing cross-linked, fine-particle geleous polymerizates by copolymerizing: a) water-soluble, monoethylenically unsaturated monomers; b) 0.001 to 5 mol %, with regard to monomers (a),...
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WO/2001/012315A1 |
The invention relates to a method for producing esters from unsaturated carboxylic acids with a higher boiling point than water, especially acrylic acid or methacrylic acid; and polyhydric alcohols in a reactor (2). The liquid reaction m...
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WO/2001/009091A1 |
The invention relates to a novel method for converting carboxylic acids into protected acyl guanidines. The invention specifically relates to a novel method for continuously carrying out Mukaiyama reactions in a microreactor.
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WO/2001/009064A1 |
The invention relates to a method for the Friedel-Crafts acylation of organic compounds. The method is characterised in that a) a solution is produced which contains an acylation reagent and a strong acid; b) this solution is mixed in an...
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WO/2001/000339A1 |
The invention relates to a method for cleaning valves or conduits through which hydrolysable polymers are conveyed at operating temperature, wherein after stopping the polymer flow and evacuating as much polymer as possible, steam is fed...
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WO/2000/045947A1 |
A flow reactor for liquid-phase polymerization reactions. A liquid reaction mixture containing organic reactant molecules to be polymerized is jetted into a low-temperature high-pressure part (B) from a high-temperature high-pressure par...
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WO/2000/037475A1 |
A process and apparatus for the continuous production of organometallic compounds from a metal precursor and an alkylating agent. The reactants are delivered separately to a reaction centre (26) in a distillation column (2) wherein the r...
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WO1998042786A9 |
Components of a chemical processing system are disclosed. In particular, a chemical processing system is disclosed which includes a chemical mixing or reacting zone, an inlet to the zone, an outlet to the zone, and a vacuum or fluid flow...
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WO/1999/007466A1 |
Enhanced macromixing, mesomixing, and micromixing of multiple discrete reactant streams, particularly for precipitation reactions of low density pumpable fluids, are obtained by controlled continuous high pressure multiple reactant strea...
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WO/1999/003561A1 |
A method for removing contaminants from an organic-based feed stream which includes the use of a layer of reticulated ceramic material to filter the organic-based feed stream and to provide liquid distribution upstream of the catalyst bed.
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WO/1999/003553A1 |
An assembly for transferring fluid between trays in a liquid-liquid chemical process or contact tower (12) is disclosed. The contact tower (12) contains a continuous phase (126) and a dispersed phase (128). The assembly includes first (1...
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WO/1998/049204A1 |
The method used to polymerize a microsuspension enables continuous production of particular homopolymerizates and copolymerizates from at least one polymerizable monomer. The polymerization of the microsuspension, to which addition agent...
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WO/1998/041317A1 |
A liquid is injected into a reaction vessel (12) via a narrow orifice (28) in a plate (26). The resulting liquid jet passes through a tubular hub (24), a conical coupling (22), and a large diameter tube (20) before reaching the vessel (1...
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WO/1998/031459A1 |
The present invention relates to apparatus for the semi-continuous polymerisation of monomers with the use of a chain initiator. This apparatus is characterised in that it comprises a reactor (1) arranged with its axis substantially vert...
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WO/1997/049484A1 |
The invention relates to a method of manufacturing a dry powder particle, preferably using electrohydrodynamic spraying, wherein two oppositely charged aerosol streams are contacted. The invention allows for the manufacture of powders ha...
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WO/1997/033687A1 |
The invention relates to a method and an apparatus for carrying out a treatment in the presence of centrifugal force. The treatment may be a physical or a chemical treatment. For this purpose the first and the second phase are brought in...
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WO/1997/024572A1 |
A ceramic packing element (500) is formed from a stack of ceramic plates (502) having parallel ribs (504) forming parallel grooves therebetween. The grooves are formed into channels by being contacted with the surface of an opposed plate...
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WO/1996/040427A1 |
A process for producing a substantially dry polymer particle powder. A mixture of polymerization reagents is formed from a mixture of at least one monomer source and a solvent selected from the group consisting essentially of water and o...
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WO/1996/040630A1 |
A continuous process for the preparation of 2-hydroxy-4-methylthiobutanoic acid or a salt thereof which includes introducing an aqueous mineral acid into a nitrile hydrolysis reactor including a continuous stirred tank reactor and introd...
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WO/1996/012564A1 |
A method for treating petroleum with anaerobic microorganisms acting as biocatalysts that can remove sulfur atoms from hydrocarbon molecules, under anaerobic conditions, and then convert the sulfur atoms to hydrogen sulfide. Because the ...
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WO/1996/004203A1 |
A process for producing Caro's acid by reaction of at least 85 % by weight sulfuric acid and at least 50 % by weight hydrogen peroxide wherein the sulfuric acid (9) and hydrogen peroxide (1) are fed through separate feed lines (11 and 3)...
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WO/1996/000609A1 |
An apparatus for mixing two or more liquids comprising a mixing chamber (1), two or more liquid inlets (20, 30), and a liquid outlet (40); wherein the mixing chamber (1) further comprises a gas inlet (50), and a means for regulating the ...
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WO/1995/017937A1 |
The invention concerns the working up of reaction mixtures containing undesirable high-boiling by products, low-boiling educts and the product sought, the boiling point of the product sought lying between the boiling points of the high- ...
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WO/1995/015935A1 |
In the production of vinyl chloride by the thermal splitting of 1,2-dichloroethane, first of all hydrogen chloride, then vinyl chloride and finally hydrogen chloride taken along with vinyl chloride are distilled off in three stages. If w...
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WO/1995/004019A1 |
Disclosed is a process of the alkylation of an olefin with an isoparaffin using sulphuric acid as a catalyst. In this process, a finely-dispersed emulsion of isoparaffin and sulphuric acid is prepared first, in a separate emulsion prepar...
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WO/1994/029017A1 |
A multi-phase staged passive reactor (10) for promoting interphasic interaction of a first substance in a liquid phase with a second substance in a non-miscible liquid phase, a solid phase or a gaseous phase. The reactor comprises a plur...
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WO/1994/023833A1 |
A method and an apparatus for catalysing a liquid phase reaction between at least two reactive species by means of at least one catalysing ion, wherein the catalytic solution is placed in at least one catalytic chamber (13) separated fro...
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WO/1994/021372A1 |
An integral structure is provided for chemical processing and manufacture, in which a plurality of laminae (100-1100) are joined together and having inlet (20, 24) and outlet (30, 34) ports connected by a three dimensionally tortuous cha...
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WO/1994/020207A1 |
An exothermic process for forming a product which may be in a liquid phase is disclosed wherein a first reactant (3), preferably a liquid reactant, is directly fed into a reaction zone (10) containing mixing elements (12, 58) and which c...
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WO/1993/025501A1 |
A process for isoparaffin-olefin alkylation is provided that permits the use of solid catalysts which require frequent regeneration and high isoparaffin/olefin ratios. The process comprises circulating in a reactor (10) a slurry comprisi...
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WO/1992/016287A1 |
A saddle-type random packing element (10) for use in a vapor-liquid tower which packing comprises an arcuate body having generally parallel, upright flanges (12, 13) on either side, the arcuate body having a plurality of alternating, gen...
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WO/1992/007791A1 |
Conventional plant to produce peroxomonosulphuric acid (Caro's acid) is large and emphasises extensive cooling, so that it is awkward to transport, can be cumbersome to install beside existing plant and can suffer from relatively expensi...
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WO/1990/011114A1 |
The invention concerns a discontinuous process for conducting a heterogeneously catalysed reaction which takes place at high temperatures and which yields heat-sensitive products. Heating is effected by a heat-exchanger (4) distinct from...
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WO/1989/010188A1 |
The device disclosed comprises a stack of superimposed reaction plates (14) which can be moved selectively and incrementally relative to one another and are provided with incrementally spaced passages (16), each passage forming a reactio...
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WO/1988/005074A1 |
A wafer (10) for synthesizing biopolymers includes a retaining ring (16), solid phase support material (22) and porous members (18, 20) at respective ends of the retaining ring (16). The porous members (18, 20) are maintained in position...
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WO/1988/004286A1 |
Novel method for conducting phase transfer catalysis in a multiphase reaction system wherein the different phases are separated by a membrane permeable to the phase transfer catalyst and its various reaction complexes. The invention also...
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WO/1987/002378A1 |
To improve the cracking degree of an installation for continuous cracking of fats comprising in a tubular column counter-flowing currents of ascending fats and falling water, to increase the glycerin concentration and reduce the retentio...
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WO/1987/000159A1 |
Process for producing concentrated solutions of ammonium nitrate by neutralizing nitric acide with ammonia in a tubular reactor. When the total flow rate of reactants corresponds to a production lower than 150 kg/h/cm2 the neutralization...
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