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WO/2008/052943A1 |
The present invention relates to a process for improving the devolatilization of polymer slurry produced in an olefin polymerization reactor. The process is characterized in that it involves an adjustment of the temperature of the interi...
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WO2008027858B1 |
A process for producing polymer and more particularly adhesive using a recirculating loop reactor. In one embodiment the reactor includes one or more mixers to mix feed stock with the polymerized material recirculating in the reactor. In...
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WO/2008/043583A1 |
The present invention relates to the in situ silyl end group functionalisation of polymer chains produced by atom transfer radical polymerisation, and to the simultaneous removal of transition metals from polymer solutions.
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WO/2008/043472A1 |
Process for heating a polymer-containing stream being transferred from a polymerisation reactor to a degassing vessel, comprising passing the stream through a heater comprising a transfer line for the stream and means for heating the tra...
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WO/2008/043473A1 |
A process for heating a polymer-containing stream being transferred from a polymerisation reactor to a degassing vessel, comprising passing the stream through a heater comprising a transfer line for the stream and means for heating the t...
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WO/2008/045517A2 |
Radiation curable and jettable ink compositions comprise ethylenically unsaturated oligomer and an ethylenically unsaturated monofunctional monomer. The compositions may optionally include additional ethylenically unsaturated polyfunctio...
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WO/2008/042383A1 |
A process for producing higher molecular weight polyester includes heating a polyester to form a melt, and applying and maintaining a vacuum of between about 5 mm and about 85 mm of mercury to the melt while passing bubbles of gas throug...
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WO/2008/037676A1 |
The invention relates to a method for the continuous production of water absorbent polymer particles, comprising the drying of a polymer gel on a circulating air belt dryer, wherein the water content of the polymer gel is used during or ...
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WO/2008/034786A1 |
The invention relates to a process for preparing water-absorbing polymer particles by polymerizing a monomer solution comprising at least one ethylenically unsaturated, acid-bearing monomer which has been neutralized to an extent of less...
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WO/2008/034724A2 |
The invention relates to a method and a device for reprocessing a polymer-containing latex dispersion, particularly a latex dispersion containing acrylonitrile butadiene styrene polymers, into polymer powder. In the claimed method, the l...
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WO/2008/031779A1 |
Method for the removal of residual styrene monomers from polystyrene and from co-extrudates comprising crosslinked polyvinylpyrrolidone which is not soluble in water, characterized in that an aqueous suspension of the particulate solid c...
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WO/2008/030387A2 |
A process for reducing the level of residual catalyst comprising one or more alkylhalide, alkoxyhalide, metal halide, metal oxyhalide, alkyl metal, alkoxy metal, boron compound and coordinated metal compound wherein the metal is a Group ...
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WO/2008/020012A2 |
Disclosed is a method for producing a thermoplastic ABS molding compound. According to said method, the thermoplastic copolymer A is produced from acrylonitrile and styrene by means of bulk polymerization or solution polymerization, whil...
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WO/2008/017523A1 |
The present invention relates to the in situ removal of terminal halogen atoms from polymer chains which have been prepared by means of atom transfer radical polymerization, and to the simultaneous removal of transition metals from polym...
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WO/2008/017522A1 |
The present invention relates to the in situ hydroxyl end group functionalization of polymer chains which have been prepared by means of atom transfer radical polymerization, and to the simultaneous removal of transition metals from poly...
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WO/2008/015228A2 |
A process to perform the finishing of polyolefins produced by gas-phase catalytic polymerization of one or more α-olefms in the presence of a polymerization diluent selected from a C3-C5 alkane, wherein the polyolefm granules discharged...
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WO/2008/016810A1 |
This invention provides a process which comprises heating a lithium-containing mixture to one or more temperatures of at least about 90 ° C and at one or more pressures sufficient to maintain substantially the entire mixture in the liqu...
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WO/2008/012217A2 |
The present invention relates to a process for reducing residuals content in a vinyl aromatic polymer, said residuals comprising essentially unpolymerized vinyl aromatic monomer, wherein the vinyl aromatic polymer in the molten state is ...
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WO/2008/010862A1 |
The invention is directed to a process for producing polyolefins by one or more homogeneous or colloidal polymerization catalyst wherein residual catalyst is removed by using a solid sorbent.
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WO/2008/010973A1 |
Crosslinked polydicyclopentadiene polymer and copolymer are made by first forming a thermoplastic polymeric intermediate in a ring-opening metathesis polymerization (ROMP), and then crosslinking the intermediate in a melt-processing or s...
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WO/2008/003912A2 |
The present invention relates to a process for producing a moulding powder, characterized in that it consists in encapsulating particles of at least one filler via the free-radical polymerization of at least one monomer in the presence o...
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WO/2008/004660A1 |
Disclosed is a method for producing a good aqueous fluorine-containing polymer dispersion having a low fluorine-containing surfactant content, wherein the fluorine-containing surfactant is efficiently removed by adjusting the pH. Specifi...
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WO/2008/000649A1 |
Method for producing aqueous polymer dispersion using rinsing water.
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WO/2008/002352A1 |
Provided for herein is a process to produce an essentially homogeneous single liquid phase, hydrocarbon-rubber cement from a polymer slurry comprising a hydrocarbon-rubber, a diluent, and unreacted monomer(s), the process comprising: (a)...
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WO/2008/002346A1 |
Provided for herein is a process for separating a hydrocarbon-rubber from a hydrofluorocarbon diluent comprising contacting a polymer slurry comprising the hydrocarbon-rubber dispersed within the hydrofluorocarbon diluent with a hydrocar...
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WO/2007/149275A2 |
A process for deactivating an active catalyst species in an olefin polymer stream exiting a polymerization reactor and neutralizing catalyst residues comprising adding to the olefin polymer stream in a quantity at least sufficient to ina...
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WO/2007/149274A2 |
A process for deactivating an active catalyst species in an olefin polymer stream exiting a polymerization reactor and neutralizing catalyst residues, as well as reducing corrosion, plugging or fouling of olefin production and recovery e...
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WO/2007/144343A1 |
A process is proposed for separating a liquid feed mixture (1) by dynamic cross-flow filtration in a membrane separation unit (MTE), comprising a housing (G) which is separated by a membrane (M) into a retentate space (R) and a permeate ...
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WO/2007/142882A2 |
A process for reducing fluorosurfactant content of a stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion. The process includes providing a fixed bed of anion exchange resin having anion exchange groups with counter io...
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WO/2007/137713A1 |
An uncompounded polyolefin powder is disclosed, having a particle size distribution such that D95 is less than 355μm and (D90-D10)/D50 is less than 1.2, where D95, D90, D50 and D10 are defined such that 95vol%, 90vol%, 50vol% or 10vol% ...
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WO/2007/135946A1 |
Disclosed is a method for producing a polybutadiene wherein 1,3-butadiene is subjected to a cis-1,4 polymerization by using a catalyst and then the resulting is subjected to a syndiotactic-1,2 polymerization in the same polymerization sy...
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WO/2007/124543A1 |
A polymeric system which includes a polymeric material and a pro-fluorescent nitroxide compound or a fluorescent spin adduct thereof, the compound having at least one 5 to 10 membered heterocyclic ring comprising a nitroxide moiety or a ...
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WO/2007/123123A1 |
Disclosed is a method for producing a fluorine rubber wherein coloration is prevented. Specifically disclosed is a method for producing a fluorine rubber, which is characterized by comprising a step for heating and drying a coagulated pr...
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WO/2007/116554A1 |
A process for the production of water-absorbing resin particle agglomerates by which water-absorbing resin particles having satisfactory high water-holding capacity and large diameters can be produced without using special material, whic...
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WO/2007/115848A1 |
The present invention relates to a precipitation process for removing transition metals from polymer solutions. Specifically, it comprises the removal of transition metal complexes which usually comprise copper from polymer solutions aft...
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WO/2007/116614A1 |
This invention provides a process for producing a resin for semiconductor lithography that can suppress the occurrence of defects, particularly bridge mode defects. The process for producing a resin for semiconductor lithography comprise...
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WO/2007/116037A1 |
The invention pertain to a process for purifying a fluoropolymer dispersion, said process comprising: (i) providing an aqueous dispersion (D) of at least one fluoropolymer [polymer (F)] comprising at least one fluorinated surfactant [sur...
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WO/2007/117098A1 |
Disclosed is a method of removing a residual catalyst metal compound from a polymer solution. The method comprises the steps of: a) mixing a solution in which at least one organic nitrogen compound is dissolved in a polar solvent and the...
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WO/2007/113297A1 |
The invention relates to a method for coagulating an aqueous polymer dispersion, which is characterised in that during or after coagulation, the dissolved coagulation salt is transformed into an insoluable form.
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WO/2007/114468A1 |
A dryer having a circular tubular first straight barrel section opened at its both upper and lower ends, a substantially circular conical first cone section contiguously provided at the upper end of the first straight barrel section and ...
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WO/2007/101856A1 |
The present invention relates to an apparatus for degassing polymer powder comprising a chamber having a first end and a second end opposite to each other, said chamber being equipped with at least one powder inlet and at least one gas o...
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WO/2007/088135A1 |
The invention relates to a method for the purification of a resorbable polymer from residual monomers comprising the addition of a solution of said polymer in a solvent and the addition of a precipitation agent into a mixing chamber to p...
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WO/2007/078445A1 |
A method of making a stable photoresist solution containing a polymer from a solution of a polymer containing trace metals, said method comprising the steps of: (a) providing a polymer solution containing a polymer, a first solvent and t...
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WO/2007/078414A1 |
Disclosed herein is a process to produce a film comprising polyvinyl alcohol), wherein the poly (vinyl alcohol) solution has been purified utilizing an ion exchange resin. An approximate 50 micrometer thick film produced from the purifie...
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WO/2007/075615A2 |
A polyolefin production system, comprising a polymerization reactor (such as a polyethylene loop slurry reactor) and a fractionation system that receives reactor effluent processed in a diluent/monomer recovery system for recycle to the ...
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WO/2007/074075A1 |
The invention provides a process for preparing copolymers comprising vinyl ester and ethylene or ethylenically unsaturated monomers by aqueous free-radical polymerization at a pressure of 5 to 100 bar absolute by the emulsion or suspensi...
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WO/2007/071356A2 |
A process for purifying a polymer containing residual volatile monomers by drying the polymer powder under vacuum at a pressure and at a temperature which allows the vaporization of the residual monomers and optionally de-aggregating by ...
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WO/2007/071527A1 |
A gas-phase process for polymerizing one or more α-olefins in a fluidized bed reactor in the presence of a polymerization catalyst, said fluidized bed reactor being equipped with a fluidization grid arranged at its base, and external me...
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WO/2007/070492A1 |
Method for preparing polymer products, comprising polymerizing conjugated diene monomer, optionally together with vinyl aromatic monomer, within hydrocarbon solvent by employing lithium-containing initiator, thereby forming living polyme...
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WO/2007/061596A1 |
A process for polymerizing one or more monomers is provided. In at least one specific embodiment, the process includes preparing a mixture comprising the one or more monomers, a catalyst system and a flourinated hydrocarbon, preferably a...
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