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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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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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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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7534404 |
Methods of operating surface reactors and reactors employing such methods
New methods of operating surface reactors, and such reactors, particularly spinning disk reactors, require that a first reactant is fed to a reactor surface ( 20 ) and forms a thin radially outward...
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7504462 |
Process for producing olefin polymer
Disclosed is to provide a process for producing an olefin polymer by continuous polymerization according to which the transition metal compound and the co-catalyst component promptly contact after...
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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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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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7459506 |
Segmented agitator reactor
The present invention relates to an apparatus for carrying out chemical and physical processes, wherein flowable substances are mixed together, comprising a vertical, cylindrical vessel with inlets...
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7431893 |
Process and apparatus for continuous polycondensation
An apparatus for continuously producing polyester comprises three single reactors, i.e. a single esterification reactor (first reactor), a single initial polymerization reactor (second reactor) and...
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7410620 |
Apparatus for continuous production of polymers in carbon dioxide
A method for carrying out the continuous polymerization of a monomer in a carbon dioxide reaction medium comprises the steps of: (a) providing an apparatus including a continuous reaction vessel...
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7407631 |
Apparatus and method for agitating a sample during in vitro testing
In an apparatus and method for agitating a sample during dissolution or other in vitro testing, a movable component is disposed in a container for reciprocating or rotating a sample carrier such as...
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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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7279535 |
Method for the continuous production of polymers made of vinyl compounds by substance and/or solvent polymerization
Production of vinyl polymers by the polymerization of vinyl monomers in a planetary gear extruder.
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7261863 |
Closed loop continuous polymerization reactor and polymerization process
A closed loop continuous emulsion polymerization apparatus at least comprising a circulation pump, a reactor tube which connects the outlet of the circulation pump to its inlet, at least one feed...
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7253228 |
Method for producing polyurethane emulsion
The present invention provides a process for producing a polyurethane emulsion, capable of continuously producing a polyurethane emulsion which contains substantially no organic solvent and also...
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7230037 |
Method for mixing a polyol component and an isocyanate component
The present invention relates to a method for the continuous mixing of at least one polyol component and at least one isocyanate component and optionally additives to form a polyurethane reaction...
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7220392 |
Fuel conversion reactor
A fuel conversion reactor includes a shell-and-tube heat exchanger for controlling the temperature of a hot gaseous mixture produced by catalytic or non-catalytic reaction of a fuel with a gaseous...
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7214760 |
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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7192989 |
Method and expansion device for preparing expanded thermoplastic microspheres
The present invention relates to a method of preparing expanded thermoplastic microspheres, comprising charging thermally expandable microspheres into an expansion device comprising rotating...
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7179426 |
Large catalyst activator
A catalyst activator vessel for heat conditioning a catalyst is disclosed. The activator vessel includes inner and outer vessels, a perforated, normally generally horizontal grid plate within the...
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7144981 |
Process for separating volatile components from polymers
A process for concentrating polymers by evaporation is disclosed. The process entails (i) obtaining a mixture containing a polymer and volatile component, the volatile components being present in...
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7138478 |
Process for mixing polymer melts with additives
A continuous process for mixing polymer melts with additives, in particular polycarbonate melts with additives in liquid form, in solution or in dispersion is described. The additives are added to...
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7135541 |
Polyester process using a pipe reactor
There are disclosed polyester processes using a pipe reactor and corresponding apparatuses. In particular, there are disclosed processes and corresponding apparatuses including an esterification...
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7132531 |
Reactor
A reactor vessel for carrying out solid phase synthesis, particularly the solid phase synthesis of oligonucleotides, peptides, and combinatorial chemistry is provided. The reactor vessel comprises...
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7115235 |
Rotating surface of revolution reactor with temperature control mechanisms
A reactor including a rotatable disc ( 3 ) having first ( 5, 19 ) and second ( 20, 30 ) surfaces. Reactant ( 15 ) is supplied to the first surface ( 5, 19 ) by way of a feed ( 4 ), the disc ( 3 )...
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7087204 |
Reaction unit
A reactor which is a reactor ( 4 ) in the form of a cylindrical vessel having a liquid inlet and a liquid outlet and elongated in a flowing direction, comprising, in the interior, a drive shaft ( 6...
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7057007 |
Process for continuously producing polybutylene terephthalate
Polybutylene terephthalate having good heat stability and excellent hydrolysis resistance is continuously produced in a series of a first reactor for reacting an aromatic dicarboxylic acid...
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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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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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7014820 |
Rotating surface of revolution reactor with feed and collection mechanisms
A reactor including a rotatable disc ( 3 ) having a region ( 13 ) in an upper surface ( 5 ) thereof. Reactant ( 15 ) is supplied to the region ( 13 ) by way of a feed ( 4 ), the disc ( 3 ) is...
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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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6977063 |
Rotating surface of revolution reactor with shearing mechanisms
A reactor including a rotatable disc ( 3 ) having a surface ( 5 ) onto which reactant ( 15 ) is supplied by way of a feed ( 4 ). The disc ( 3 ) is rotated at high speed, and the reactant ( 15 )...
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6972113 |
Rotating surface of revolution reactor with enhanced surface features
A reactor including a rotatable disc ( 3 ) having a surface ( 5 ) onto which reactant ( 15 ) is supplied by way of a feed ( 4 ). The disc ( 3 ) is rotated at high speed, and the reactant ( 15 )...
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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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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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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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6887434 |
Preparation of propene and, if desired, 1-butene
Propene and, if desired, 1-butene are prepared by
a) reacting 1-butene and 2-butene to give propene and 2-pentene in the presence of a metathesis catalyst comprising at least one compound of...
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6858668 |
Method for masking polyisocyanates in emulsion
This invention relates to a process for the preparation of aqueous emulsions of blocked (poly)isocyanates, this process comprising the steps consisting successively in:
a) placing an...
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6858188 |
Apparatus for preparing polyolefin products and methodology for using the same
Apparatus for olefin polymerization includes a plurality of shell and tube olefin polymerization reactors, each of which has an olefin polymerization reaction mixture inlet connection and a crude...
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6855296 |
Method and apparatus for liposome production
A new method of producing liposomes is described using an in-line mixing system. The liposomes produced by this method find utility in numerous therapeutic applications.
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6809124 |
Method for the production block foam
The invention relates to a method for the production of polyurethane block foam, wherein a polyurethane reactive mixture containing carbon dioxide is suddenly relieved from a pressure above the...
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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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6767514 |
Test apparatus
An apparatus for carrying out chemical reactions simultaneously on a number of samples under identical pressure conditions comprises a plurality of upwardly open pressure vessels 1 mounted on a...
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6753403 |
Process and apparatus for producing polycarbonate
A process for producing polycarbonate designed to improve the quality of polycarbonate as a polymerization product polymer and reduce the investment and operating costs is provided. Polycarbonate...
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6747107 |
Method of dispersion of a non-Newtonian fluid
Non-Newtonian fluids, such as partially polymerized monomers or solutions of polymer in monomer may be pressure atomized below the surface of an immiscible continuous liquid phase to produce a...
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