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7608225 |
Tower reactor and use thereof for the continuous production of high molecular weight polyesters
The invention relates to a tower reactor and the use thereof for producing high-molecular weight polyesters, such as e.g. polyethylene terephthalate (PET), polybutylene terephthalate (PBT),...
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7601795 |
Process for production of a carboxylic acid/diol mixture suitable for use in polyester production
The present invention relates to a process by which a carboxylic acid/diol mixture is obtained from a slurry or cake carboxylic acid product without isolation of a substantially dry carboxylic acid...
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7588735 |
Production of polyethylene
A process of producing polyethylene, the process comprising copolymerizing ethylene and an alpha-olefinic comonomer comprising from 3 to 8 carbon atoms in the presence of a chromium-based catalyst...
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7563858 |
Method for stably producing an aromatic polycarbonate
A method for stably producing an aromatic polycarbonate, which comprises continuously reacting an aromatic dihydroxy compound with a diaryl carbonate in a closed, reactor-pipeline system, the...
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7563413 |
Compressor for high pressure polymerization
The invention provides a compressor for use as a secondary compressor for an ethylene polymerization tubular reactor comprising a motor and at least two compressor frames, at least one of the...
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7563412 |
Reactor for solid phase synthesis
A Reactor ( 1 ) for solid phase synthesis comprises a vessel ( 2 ), a plurality of filters ( 3 ) arranged in the vessel ( 2 ) and a plurality of filtrate outlets ( 4 ) for evacuating the filtrate...
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7563411 |
Devices for manufacturing carbon nanotube arrays
A device ( 20 ) for manufacturing a carbon nanotube array ( 10 ) includes a reaction chamber ( 220 ), a gas introducing tube ( 228 ), and a quartz boat ( 240 ). The reaction chamber includes a...
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7557180 |
Solid phase continuous polymerisation of polyethylene terephthalate (PET) reactor and process
A reactor and a process for solid phase continuous polymerization of polyethylene terephthalate (PET) in order to achieve an increase of the intrinsic viscosity (I.V.) of a low molecular weight PET...
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7556966 |
High pressure parallel reactor
A method for reacting a plurality of materials in parallel within a reactor vessel having a plurality of reaction wells formed therein. Each of the reaction wells has an open end exposed to a...
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7550116 |
Method for producing polyesters and a disk ring reactor for the method
The invention relates to a method and a device for producing polyesters such as for example polyethylene terephthalate, polypropylene terephthalate and polybutylene terephthalate from...
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7544760 |
Polymerizer device for producing an aromatic polycarbonate
It is a task of the present invention to provide a polymerizer device and a polymerizer system which enable the production, by melt transesterification, of a high quality, high performance aromatic...
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7538179 |
Process for producing aliphatic polyester
Ring-opening polymerization of a cyclic ester is performed by using an alcohol and water positively as initiators or/and molecular weight-adjusting agents to control the initial properties and...
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7537739 |
Device and method for pressure and flow control in parallel reactors
The present invention relates to a method and a device for the parallel study of chemical reactions in at least two spatially separated reaction spaces. In particular, the invention is suitable for...
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7531616 |
Process for industrial production of an aromatic carbonate
It is an object of the present invention to provide a specific process that enables aromatic carbonates to be produced with high selectivity and high productivity stably for a prolonged period of...
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7528213 |
Method for efficiently producing an aromatic polycarbonate
It is a task of the present invention to provide a method which enables the production of a high quality, high performance aromatic polycarbonate (which is colorless and has excellent mechanical...
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7524904 |
Process and apparatus for separating polymer solids, hydrocarbon fluids, and purge gas
A process and apparatus for separating polymer solids, hydrocarbon fluids, and purge gas in an intermediate pressure zone and a purge zone. The purge gas in the purge zone is used to remove...
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7514263 |
Continuous process for the production of combinatorial libraries of materials
A system is provided wherein a plug flow reactor is used to make combinatorial libraries of materials. Examples of plug flow reactors include stirred tube reactors, extruders, and static mixers.
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RE40697 |
Method for making an aromatic polycarbonate
This invention relates to an extrusion method preparing polycarbonates from a solution of an oligomeric polycarbonate. A mixture of bis(methyl salicyl)carbonate (BMSC), BPA and a...
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7511101 |
Plug flow reactor and polymers prepared therewith
A plug flow reactor having an inner shell 27 surrounded by outer shell 21 and having at least one annular flow passage 35 therebetween can be used to prepare compositions, including polymers....
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7501481 |
Process for production of copolycarbonates with reduced color
A method is provided for reducing the color generated during production of copolycarbonate that includes quinone-type residues. The method includes the steps preparing a reaction mixture containing...
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7498399 |
Method of preparing ester-substituted diaryl carbonates
An improved method for the preparation of ester-substituted diaryl carbonates prepared by reacting phosgene with recycle streams of ester-substituted phenols from reaction processes using a...
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7495067 |
Polyester process using a pipe reactor
The invention is directed to polyester processes that utilizes a pipe reactor in the esterification, polycondensation, or both esterification and polycondensation processes. Pipe reactor processes...
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7495064 |
Manufacture of polycarbonates
A method of producing a polycarbonate is provided. In an embodiment of the present invention the method includes the steps of: (i) introducing to a melt polymerization reactor system a reaction...
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7494626 |
Methods of delivering catalyst systems for propylene polymerization
A polymerization process is provided. For example, a polymerization process is described, including providing a catalyst slurry having a metallocene catalyst and a first oil, providing a transport...
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7491369 |
Oxidation system with internal secondary reactor
Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out...
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7481981 |
Apparatus for the esterification of a fatty acid
The apparatus for the esterification of a fatty acid F includes a column with a packing. In addition to functioning as a catalytic reactor, the packing functions as a stripping section. A...
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7479258 |
Method for producing an aromatic polycarbonate
It is a task of the present invention to provide a method for producing a high quality, high performance aromatic polycarbonate (which is colorless and has excellent mechanical properties) from a...
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7470766 |
Method for removing contaminants from plastic resin
A method for removing contaminants from synthetic resin material containers using a first organic solvent system and a second carbon dioxide system. The organic solvent is utilized for removing the...
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7468279 |
Selection of polymerization catalysts and apparatus for carrying this out
In a method of selecting polymerization catalysts, in particular Phillips catalysts for the polymerization of olefins, from a multiplicity of catalysts on the basis of their catalytic properties, a...
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7445935 |
Process and apparatus for loading a particulate solid into a vertical tube
A process is described in which an elastic fluid is contacted with a particulate solid. This comprises providing a substantially vertical elongate tubular containment zone ( 1 ) containing a charge...
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7435393 |
Baffle assembly module for vertical staged polymerization reactors
The present invention provides an assembly for use in vertical, gravity flow driven polymerization reactors for combinations of high viscosity, high throughput, and shallow polymer depths. The...
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7435392 |
Scalable continuous production system
A parallel chemical production system producing a desired product by operating a plurality of reactors in parallel. The fluidic properties of each of the reactors are identical to the properties of...
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7435391 |
Light-mediated micro-chemical reactors
A chemical reactor includes two substrates that are joined along a surface and a chemical reaction chamber formed between the substrates. The chemical reaction chamber has a hollow interior and one...
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7435390 |
Nucleic acid synthesizers
The present invention relates to nucleic acid synthesizers and methods of using and modifying nucleic acid synthesizers. For example, the present invention provides highly efficient, reliable, and...
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7431907 |
Apparatus for removing vaporized unreacted isocyanate from a gaseous waste stream
An apparatus includes a container that defines an interior. The interior is isolated from ambient atmosphere for receiving a composition that includes isocyanate. A conduit extends into the...
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7419830 |
Plural reaction chamber catalytic testing device and method for its use in catalyst testing
A catalytic testing device comprising
a reaction block comprising a set of reaction chambers, each chamber comprising a fluid inlet and outlet connected to an outgoing fluid duct connected...
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7402636 |
Method and apparatus for decreasing polymer deposition
The disclosure provides a slurry polymerization system and method to decrease polymer deposition on reactor surfaces using an oxygenate such as alcohol ( 16 ) supplied to the polymerization medium...
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7402288 |
Reactor for testing catalyst systems
A reactor for testing catalyst systems which has a plurality of catalyst tubes ( 2 ) which are arranged parallel to one another in the interior space of the reactor and whose ends are welded into...
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7396513 |
Liquid contacting of post-quench effluent vapor streams from oxygenate to olefins conversion to capture catalyst fines
A process is provided for converting oxygenate to olefins from a fluidized bed reactor which comprises removal of catalyst fines from a quenched vaporous effluent by contacting with a liquid low in...
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7390664 |
Method and apparatus for high throughput catalysts screening and optimization
The present invention relates to an apparatus and a process for the high-throughput, quick screening, optimization, regeneration, reduction and activation of catalysts. More specifically, the...
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7384608 |
Batchwise heating apparatus and method of drying a polyamide
Described is an apparatus for the purpose of drying or solid phase polymerization of Polymer particles by batchwise heating the same in an atmosphere of inert gas or under reduced pressure. More...
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7381788 |
Method for continuous production of polyamide
Provided is a continuous production method of a polyamide with stabilized polymerization degree and good quality, particularly an aromatic-containing polyamide. A continuous production method of a...
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7371808 |
Polymer treating method and apparatus
A polymer treating method has the steps of: reacting a polymer compound with a reaction agent in a reaction vessel to generate a polymer treatment product; discharging the polymer treatment product...
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7368521 |
Method of producing modified polycarbonate using spray-crystallizing method
Provided is a method of producing a high-molecular weight modified polycarbonate resin. The method includes a melt condensation polymerization process in which transesterification and quick...
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7368089 |
Systems and methods for producing fluorocarbons
Systems and methods for producing fluorocarbons are provided that include contacting a saturated halogenated fluorocarbon with hydrogen and catalyst to produce a saturated hydrofluorocarbon and an...
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7335513 |
Apparatus and methods for parallel processing of multiple reaction mixtures
A parallel reactor system including a reactor and vessels in the reactor for holding reaction mixtures, and a cannula for introducing fluid reaction material into the vessels. A robot system is...
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7317071 |
Process for producing fluoromonomer
Processes for producing a fluoromonomer from a fluoropolymer, among which one that can be carried out more simply is a process wherein thermal decomposition of a fluoropolymer is preformed by means...
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7309470 |
Methods and apparatus for improved fluid control utilizing a U-valve employing a bidirectional check valve
A U-valve apparatus including a bidirectional check valve for controlling the flow of liquid from a vessel while preventing inadvertent discharge from the vessel. The check valve allows passage of...
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7297754 |
Method for the preparation of aromatic chloroformates
A method for preparing an aromatic chloroformate comprising, introducing a mixture of at least one aromatic hydroxyl compound, phosgene, at least one solvent, and at least one organic base into a...
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7297313 |
Microfabricated reactor, process for manufacturing the reactor, and method of amplification
An integrated microfabricated instrument for manipulation, reaction and detection of microliter to picoliter samples. The instrument is suited for biochemical reactions, particularly DNA-based...
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