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6726355 |
Self-cleaning mix head having a longitudinal mixer for a molding system
A mix head assembly including a mix chamber having a mixer rotatably mounted therein. The mixer extends for a longitudinal length and defines a multiple of vanes which agitate the fluid material...
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6720393 |
Melt flow index determination in polymer process control
Closed-loop feedback control of (continuous) catalytic polymerisation, by regulating the introduction of a Chain Transfer Agent (CTA) to a reactor, and so polymer chain length formation; through...
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6710159 |
Polyamide composition and method for producing the same
A process for producing a polyamide or copolyamide freed from volatile constituents by removing the volatile constituents, in particular the monomers and dimers, in at least two stages from the...
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6599981 |
Method for manufacturing olefinic thermoplastic elastomer composition
This invention relates to a method for manufacturing an olefinic thermoplastic elastomer composition, characterized by disposing specific kneading segment at least at one place of the screw on the...
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6596824 |
Method for producing polyolefin and gas phase polymerization apparatus
Provided is a continuous vapor-phase polymerization method for producing polyolefins. In the method, polymer agglomerates and aggregates are prevented from being formed, and polymer deposition on...
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6548026 |
Parallel reactor with internal sensing 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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6544481 |
Apparatus for the production of foamed material from a reaction mixture containing a dissolved foaming agent
Reaction mixtures which form polyurethane foamed material, with production conditions which are varied during production, e.g. variation of the proportion of foaming agent, variation of the ratio...
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6536936 |
Mix head assembly for a molding material delivery system
A mix head assembly for a rapid discharge multiple material delivery molding system includes an output chamber assembly having a plurality of impellers, a main body assembly, and a drive assembly....
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6527431 |
Combined mixing and injecting device for a mold
A combined mixing and injecting device includes a housing having a pressure chamber and containing two plungers with one being sleeved around the other. The plungers have top ends formed with...
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RE37932 |
Supermicrocellular foamed materials
A supermicrocellular foamed material and a method for producing such material, the material to be foamed such as a polymerplastic material, having a supercritical fluid, such as carbon dioxide in...
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6492483 |
Integrated continuous process for upstaging epoxy resins
The present invention discloses a continuous process and the associated system for upstaging liquid epoxy resins to produce resins with higher molecular weight. The process comprises passing...
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6468787 |
Method and apparatus for controlled photoelution
A method for photoeluting photocleavable linker-attached chemical compounds, and an apparatus suitable for implementing the method, are disclosed. According to the method, photocleavable...
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6409972 |
Prepackaged liquid bone cement
Poly(alkyl methacrylate) bone cement ingredients are prepackaged as two separate components in two separate chambers of a container which can be connected to a static mixer, where both components...
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6392007 |
Multi-pixel liquid streams, especially fiber-forming polymeric streams, and methods and apparatus for forming same
At least two different liquid streams are sub-divided into a dense plurality of individually separated parallel pixels oriented in respective misregistered arrays. Therefore, an individual pixel of...
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6350054 |
Agitator for a horizontal polymerization reactor having contiguous paddle stations with paddles and sub-stations with sub-station paddles
Improved apparatus for mechanically stirring a quench-cooled subfluidized particulate bed of polymerized monomer lowers lumping of polymer particles by using substantially contiguous paddle...
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6310239 |
Process for manufacturing terephthalic acid
This invention relates to a process for manufacturing terephthalic acid and more particularly, to a process for manufacturing and recovering the highly purified terephthalic acid, in accordance...
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6306981 |
Gas phase polymerization process
A process for the manufacture of olefin polymers in a continuous gas phase polymerization reaction wherein monomer, after passage through the fluidized bed, is cooled to a temperature below its dew...
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6290915 |
Apparatus having multiple inputs for solid-phase chemical synthesis
An apparatus and its use for chemical synthesis is disclosed. In one embodiment, the apparatus comprises a solid support input and a plurality of reagent inputs, wherein each input is connectable...
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6252018 |
Use of a single-stage or multistage stirrer to prepare polymers
At least one single-stage or multistage stirrer which produces not only a tangential flow component but also an axial flow field is used in a stirred-vessel reactor in connection with the...
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6218484 |
Fluidized bed reactor and polymerization process
A continuous process for the manufacture of olefin polymers in a continuous gas phase polymerization reaction wherein monomer, after passage through the fluidized bed, is cooled to a temperature...
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6168762 |
Apparatus and method for producing porous superabsorbent materials
A method and apparatus for producing a superabsorbent foam is provided. The method includes forming a reaction mixture comprising at least one compound capable of forming a superabsorbent foam,...
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6139804 |
Process for production of polyoxymethylene
A process for producing a polyoxymethylene using a reactor having a discharging port having a weir, which process comprises introducing trioxane or a mixture of trioxane and a compound reactive...
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6126904 |
Apparatus and methods for the preparation of chemical compounds
The present invention provides apparatus and methods for the synthesis of combinatorial chemical libraries. The apparatus comprises a plurality of reaction vessels having an inner surface, an outer...
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6114478 |
Gas-phase polymerization of C.sub.2 -C.sub.8 -alk-l-enes by means of Ziegler-Natta or metallocene catalyst systems
A process for the homo- or copolymerization of C 2 -C 8 -alk-1-enes by means of a Ziegler-Natta or a metallocene catalyst system in a stirred bed of finely divided polymer from the gas phase, the...
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6033631 |
Synthesizer with reagent recycling
An apparatus is provided for conducting solid phase oligomer synthesis. The apparatus includes a reaction vessel in which a solid phase support is contained. The reaction vessel has a top opening...
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6012447 |
Heated mixing kettle with dual acting agitators
A heated kettle for melting and mixing a thermoplastic resin into a homogeneous mixture has a helically-formed agitator which rotates about a central shaft in close proximity to the internal wall...
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6010667 |
Shaft reactor for treating bulk material
A shaft reactor for treating bulk material, including granular bulk material, in particular for the continuous post-condensation of PET, PEN or PA in the solid phase. A uniform product flow without...
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6007782 |
Reactor with a flexurally rigid stirrer element
The invention relates to a device, in particular for the treatment of low-viscosity polymer melts, containing a vessel (1) with a stirrer element, the stirrer element (6) essentially comprising a...
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5989500 |
Reactor heat exchange system
In a reactor of the type having a vessel, an agitator for agitating the contents of the vessel, and a heat exchange system within the vessel, the improvement wherein the heat exchange system...
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5882605 |
Reactor for the productions of flowable viscous products
A reactor for the production or formulation of flowable viscous products is equipped with an internal piston which assists in the removal of product from the reactor interior.
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5861129 |
Polymer optical fibers and process for manufacture thereof
An apparatus for making polymer fiber optical cable is described. In addition, the present invention provides dyes that can be added to conventional polymers and are capable of shifting the...
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5846072 |
Indirect-fired, all ceramic pyrochemical reactor
The present invention is directed to an indirect-fired, stationary tube, gas/solids or solids/solids, full ceramic pyroprocessing furnace-reactor that uses heat-resistant conveyors to propel solids...
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5839827 |
Agitating element for mixing apparatus and the mixing apparatus equipped with the agitating element
There is provided a mixing apparatus having a mixing vessel which is substantially in the form of a cylinder and an agitating element, the agitating element including at least two bars and at least...
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5833930 |
Apparatus for foam manufacturing using carbon dioxide dissolved under pressure
For the expansion of a liquid containing gas under pressure in dissolved form, it is proposed that the liquid be passed with expansion through an extended flow channel with a small cross-sectional...
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5820829 |
Hand-operated polymerizer
A hand-operated polymerizer for the polymerization of synthetic materials, such as dental plastics. The polymerizer has a housing in which a light source and a fan are disposed, and which includes...
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5814282 |
High surface intermeshing profile reactor
A polycondensation reactor for polyesters, polyamides or polyarylates, for example, in which a low viscosity material is introduced into the reactor and a relative high viscosity polymer exits the...
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5788932 |
Apparatus for preparing flowable reaction mixtures from at least two flowable reactants
An apparatus for preparing flowable reaction mixtures from at least two flowable reactants in which the components are injected into a mixing chamber by means of injection nozzles, the force of the...
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5763545 |
Polymerization apparatus and a method for producing polymer using the same
A polymerization apparatus comprising a cylindrical polymerization vessel having a straight cylindrical section, a cooling means for cooling the contents of the polymerization vessel, and paddle...
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5762760 |
Reactor for treating pulp with a gas
The reactor comprises a pressurized vessel having an outlet member at its top and further including a blow line. The outlet member includes a housing that is in fluid communication with the vessel...
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5750079 |
Polymerization apparatus of producing vinyl chloride type polymer
A polymerization apparatus used, particularly, in suspension polymerization of vinyl chloride, comprising a polymerization vessel (1) having a substantially cylindrical inner space, said inner...
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5744555 |
Process for the synthesis of elastomeric polypropylene
A process for the production of elastomeric polypropylene is disclosed. The process entails contacting the propylene monomer neat or in an unreactive hydrocarbon solvent, with a catalyst in a...
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5686048 |
Agitator for suspension polymerization of vinyl chloride and suspension polymerization method using the same
The present invention relates to an agitator for suspension polymerization having a more improved structure in effect in contrast to the earlier agitator. The present invention also relates to an...
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5643970 |
Method and apparatus for foam manufacture using carbon dioxide dissolved under pressure
For the expansion of a liquid containing gas under pressure in dissolved form, it is proposed that the liquid be passed with expansion through an extended flow channel with a small cross-sectional...
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5620665 |
Method of recycling unsaturated polyester resin waste and recycling apparatus
Provided are a method which can recycle waste by chemically treating unsaturated polyester resin waste resulting from manufacturing of buttons or waste of fiber reinforced plastic products...
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5609831 |
Machine for producing a cross-linked extruded product
A machine for producing extruded products of polymers that are cross-linked by adding at least one additive in a polymerization reaction. A feed hopper for plastic granules is coupled to a mixing...
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5609835 |
Multi-purpose apparatus
An apparatus enabling reaction and post-reaction processing in a single assembly including a reaction chamber and a filtration and/or drying chamber adjacent to one another, the chambers being...
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5604267 |
Process for producing froth polyurethane foam
High quality, consistent polyurethane froth foams, both filled and unfilled, are prepared by directing polyol, isocyanate, and optionally other polyurethane-forming ingredients to a high pressure...
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5602216 |
Process and apparatus for performing a polymerisation in a tube reactor
The process for carrying out a polymerization in a tube reactor (1) comprises the following steps: Freshly introduced monomer (M) is mixed with a returned monomer-polymer mixture. The mixture is...
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5599506 |
Immobilized buffered gels and membranes of hydroxy groups containing polymers
A gradient mixer for the preparation of immobilized pH-gradient (IPG) gels, which includes a positive displacement syringe dispensing device (4,5) driven by a controlled speed motor (1); a mixer...
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5599507 |
Reactor apparatus for preparing a polymeric material
A polycondensation reactor for processing low viscosity polyester or another polymer into relatively highly viscosity polymer comprises a substantially cylindrical horizontal reactor vessel with a...
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