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7041775 |
Method for preparing a polycarbonate oligomer mixture at low temperature for manufacturing polycarbonate
The present invention provides a method of making polycarbonate oligomers, polycarbonate, molded articles formed from polycarbonate, and an apparatus for making polycarbonate. An oligomer mixture...
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7037659 |
Apparatus for constructing DNA probes having a prismatic and kaleidoscopic light homogenizer
The present invention provides an apparatus for constructing arrays of DNA sequences using the image of a micromirror array projected on a reaction site using a highly uniform beam of light...
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7033545 |
Slurry polymerization reactor having large length/diameter ratio
A polymerization loop reactor including a loop reaction zone, a continuous takeoff, and a fluid slurry disposed in the reaction zone. A generally cylindrical wall defines the loop reaction zone....
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7014821 |
Pumping apparatus for slurry polymerization in loop reactors
An olefin polymerization process and apparatus wherein a fluid slurry comprising monomer, diluent and catalyst is circulated in a continuous loop reactor by two or more pumps. The process and...
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7005496 |
Production of trimethylene carbonate from poly (trimethylene carbonate) by wiped film reactive evaporation
A method for producing trimethylene carbonate poly(trimethylene carbonate which comprises (a) introducing liquid poly(trimethylene carbonate) and an optional catalyst into a wiped film evaporator...
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6994827 |
Parallel semicontinuous or continuous reactors
Parallel semi-continuous or continuous reactors are disclosed. The parallel reactors preferably comprise four or more reaction vessels. The reaction vessels are preferably small volume reaction...
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6989133 |
Device for carrying out chemical reactions
The invention relates to an apparatus for the conduct of chemical reactions, comprising:
a reaction slider in which are formed a multiplicity of through holes serving as reaction chambers, a...
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6964753 |
Polymerization reactor and process
A continuous static polymerization reactor unit for the production of liquid polymers, in particular high viscosity organopolysiloxanes, in a predetermined viscosity range comprises a reactor ( 1 )...
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6962809 |
Sugar chain synthesizer
A sugar chain synthesizer comprising one or more reaction columns packed with immobilized glycosyltransferase and/or glycosidase; one or more separation means, arranged downstream from the reaction...
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6958376 |
Inlet distribution device for upflow polymerization reactors
A polymerization process and polymerization reactor are provided. For example, a polymerization process is described, including passing a feed stream including liquid and gas through a feed stream...
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6955788 |
Apparatus and method for aligning microarray printing head
An alignment apparatus and method are described for accurately and reliably depositing biological materials on a microscope slide or other substrate. A preferred implementation includes a first...
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6955915 |
Apparatus comprising polymers
A synthetic strategy for the creation of large scale chemical diversity. Solid-phase chemistry, photolabile protecting groups, and photolithography are used to achieve light-directed...
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6955789 |
Coated liquid phase reactor
The present invention relates to a reactor suitable for liquid-phase fluorination and provided, as heating means, with at least one element fixed to the cover so as to be immersed to the bottom of...
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6946529 |
Method for producing an aqueous polymer dispersion by radical aqueous emulsion polymerization with a continually produced aqueous monomer emulsion
A method for producing an aqueous polymer dispersion by radical emulsion polymerization of an aqueous monomer emulsion, wherein the monomer emulsion is produced continually according to consumption...
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6946540 |
Method of measuring extent of curing of compacted poly(arylene sulfide)
Disclosed herein is a process for preparing cured arylene sulfide polymers. A first curing vessel comprising a first agitator is used to cure a poly(arylene sulfide) compacted powder. The curing...
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6936226 |
Catalyst delivery method, a catalyst feeder and their use in a polymerization process
The present invention relates to an improved catalyst delivery method for introducing a supported bulky ligand metallocene-type catalyst system to a reactor for polymerizing one or more olefin(s)....
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6916448 |
Process for selective production of propylene from hydrocarbon fractions with four carbon atoms
For the selective production of propylene from an olefinic C 4 fraction, a process is implemented that successively comprises:
1) the selective hydrogenation of butadiene with isomerization...
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6913934 |
Apparatus and methods for parallel processing of multiple reaction mixtures
A cannula for use in transferring small volumes of fluid materials, such as in a parallel reaction process. The cannula comprises a long thin needle having various end (port) configurations, and an...
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6908971 |
Catalyst slurry feeding assembly for a polymerization reactor
A catalyst slurry for a polymerization reactor can be prepared in a mixing tank and the catalyst slurry fed to one or more storage tanks. The storage tanks can include agitators so that the...
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6905654 |
Method and apparatus for reducing static charges during polymerization of olefin polymers
The present invention relates to a method and apparatus for controlling static charges in a fluidized bed olefin polymerization reactor. Static charges which develop in the polymer products are...
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6906150 |
Heat exchanger polymerization reactors for manufacturing drag reducing agents
Temperature control and efficient heat transfer are important to producing high quality polymer drag reducing agents from alpha-olefin and/or other monomers. Many polymerization reactions are...
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6901334 |
Methods and systems for high throughput analysis
Methods of analyzing processes for making catalysts and/or certain properties of catalysts using a plurality of reaction zones are provided. The methods of the present invention have the capability...
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6893613 |
Parallel chemistry reactor with interchangeable vessel carrying inserts
The base of the modular reactor includes a frame which defines an opening into which one of a plurality of interchangeable reaction vessel carrying inserts can be removeably received. Each insert...
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6893614 |
Reaction device for organic synthesis
The present invention relates to a reaction vessel for organic synthesis and a block device for the reaction vessel and synthetic method of compound using thereof. More particularly, the present...
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6890494 |
Method for polymerization of olefin
The present invention is directed to a method for polymerizing olefins in a multi-stage polymerization apparatus including a gas-phase polymerization reactor in a subsequent stage. By use of the...
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6890491 |
Method and apparatus for universal fluid exchange
A universal fluid exchange device includes upper and lower reaction vessel supports which include pressure sealed injection and evacuation ports for each supported reaction vessel. Reaction vessels...
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6887954 |
Polymerization catalyst
The present invention is a process and an apparatus for the gas phase polymerization of olefin(s) using a fluidised-bed reactor ( 1 ) from which, at the top part, is withdrawn a recycling gas...
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6875839 |
Method for producing polylactic acid and corresponding device
The invention relates to a method for producing polylactic acid, comprising the steps of obtaining lactic acid from starchy agricultural products by fermentation, ultrapurification of the lactic...
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6872363 |
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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6866827 |
Process and device for the parallel preparation of at least 4n oligonucleotides
In a process and a device for the parallel preparation of at least 4n oligonucleotides, at least four inserts each with n reaction vessels are first arranged on a plate ( 16 ), each reaction vessel...
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6861214 |
Immobilization of biopolymers to aminated substrates by direct adsorption
An assay article for detection biopolymers contained in a sample is described. The assay article includes a substrate and a biopolymer directly adsorbed on the surface of the substrate. A plurality...
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6852827 |
Polyester production process and reactor apparatus
The invention provides a polyester production process by bulk polymerization in a reactor, wherein the volume of the resulting polyester is shrunk for a release from the inner surface of the...
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6838543 |
Method for producing polycarbonates
Polycarbonates are produced by reacting a monomeric carbonate component with at least one diphenol or dialcohol in the presence of a transesterification catalyst, wherein the molten component is...
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6835797 |
Process for producing oligocarbonates
A continuous process for producing oligocarbonate is disclosed. The process entails in sequence the steps of a) reacting a dihydroxyaryl compound with a diaryl carbonate in the presence of a...
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6828143 |
Nanoscale chemical synthesis
A modular reactor system and method for synthesizing nanoscale quantities of chemical compounds characterized by a continuous flow reactor under high pressure having uniform temperature throughout...
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6824742 |
Automated chemical synthesizer
An automated chemical synthesizer including a plurality of reaction vessels and an execution time calculator. Synthetic reactions are to be carried out in the plurality of reaction vessels...
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6825339 |
Apparatus for preparing polynucleotides on a solid support
The present invention relates to an apparatus for preparing polynucleotides on a solid support in a reactor comprising a column containing an immobilized solid support that is functionalized for...
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6825311 |
Method for cooling post reactor polyethylene terephthalate flakes
A process for cooling post solid-stating reactor PET flakes comprises conveying PET flakes from a solid-stating reactor to a first separator in the presence of air and water at an elevated...
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6818186 |
System for removing heavies from diluent recycled to a slurry polymerization reactor
A recycling and recovery system and process comprising a flash gas separator that receives a slurry comprising liquid medium and solid polymer particles. The flash gas separator separates the...
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6818736 |
Polymeric material, molded product and methods for their production
Disclosed is a polymeric material obtained by melt-kneading, using a kneading apparatus, a resin composition containing an organic polymer having no metal alkoxy group and a metal alkoxide...
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6818183 |
Multi-temperature modular reactor and method of using same
An apparatus and method for carrying out and monitoring the progress and properties of multiple reactions is disclosed. The method and apparatus are especially useful for synthesizing, screening,...
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6818187 |
Apparatus for gas-phase polymerization
An apparatus for gas-phase catalytic polymerization comprising a first vertical reactor ( 1 ), a second vertical reactor ( 2 ), the upper region of said reactor ( 1 ) being connected by a...
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6815525 |
Component introduction into manufacturing process through recirculation
A process for introducing a component into a reaction fluid and/or process fluid comprising the steps of: (a) providing a recirculation loop having an influent and an effluent wherein the influent...
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6814939 |
High RV filaments and apparatus and process for making high RV flakes and the filaments
The present invention relates to industrial high relative viscosity (RV) filaments, such as, for use in papermaking machine felts and other staple fiber applications. The invention is further...
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6814878 |
Process for carrying out a hydrogenation reaction and removing pyrophoric catalyst
A batch process for carrying out a hydrogenation reaction comprises mixing a pyrophoric catalyst with reactants and solvents to form a reaction mixture in a reaction vessel. Hydrogen is added to...
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6800250 |
Polymer synthesizer
A polymer synthesizer is disclosed which has a base on which sits a synthesis case, a synthesis block, and a means of moving the synthesis block and supports for a reagent shelf. The synthesis case...
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6797803 |
Recycle process for polycondensation resins
A method of recycling fusible polycondensation resin waste in a fusion polymerization apparatus is disclosed. The method of recycling polycondensation resins comprises adding polycondensation resin...
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6794130 |
Electrode capture of nucleic acid
Nucleic acid is captured from a mixture of cellular debris produced by cell lysis by exposing the mixture to an electrode and applying a nucleic acid capturing voltage to the electrode which is...
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6780961 |
Method of making polycarbonate
A new method of converting oligomeric chloroformates to high molecular weight polycarbonate is presented. By carefully controlling the relative concentrations and amounts of hydroxyl and...
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6770482 |
Method and apparatus for rapid screening of multiphase reactions
In one exemplary embodiment, the present invention is directed to a method that comprises providing a reaction substrate having a plurality of substrate reservoirs adapted to receive a reactant...
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