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WO/2012/007356A1 |
The invention provides a process for aqueous, free-radically initiated, continuous emulsion polymerization of A) at least one vinyl ester and optionally at least one (meth)acrylic ester, B) ethylene, and C) 0 to 10% by weight, based on t...
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WO/2012/008294A1 |
Provided is a dispersant for calcium carbonate with which the initial viscosity of a calcium carbonate slurry obtained by wet grinding is low and furthermore a marked rise in viscosity over time is prevented, and also provided is a metho...
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WO/2012/007213A1 |
The present invention relates to a process for removal of transition metals from reaction solutions, preferably from polymer solutions, by addition of elemental base metals. In a very specific embodiment, this involves the removal of tra...
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WO/2012/006387A1 |
Provided are processes and systems for recovering hydrocarbons in a vent stream from a polymerization process. The methods and systems may include the recovery of an olefin monomer from a polymerization vent gas using ethylene refrigerat...
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WO/2012/004155A1 |
The present invention relates to the degassing of polymer powder, and in particular provides an interlock for use in a process for degassing of a polymer powder in a degassing vessel, which interlock comprises: a. measuring the temperatu...
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WO/2012/004153A1 |
The present invention relates to the degassing of polymer powder, and in particular to an interlock for use in a process for degassing of a polymer powder in a degassing vessel, which interlock comprises: 1. measuring the temperature of ...
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WO/2012/000658A1 |
In a process for thermal separation of a solution composed of thermoplastic polymer and solvent, in which the solution is heated under pressure above the critical point of the solvent and then decompressed into a vessel (5) so as to form...
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WO/2011/141176A1 |
The invention relates to a method for carrying out polymerisation processes, wherein a (co-)polymerisation of monomer(s) takes place in a first stage and a separation of product and monomers, oligomers, reaction products and additives or...
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WO/2011/139410A2 |
Curable perfluoroelastomer compounds are prepared by mixing a composition comprising perfluoroelastomer, 1-20 phr fibrillating PTFE, and curative for a time ML#191 (ASTM D5289), measured on sequential samples of compound taken at 5 minut...
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WO/2011/136884A1 |
In the production of isobutylene-based elastomers the product obtained from the polymerization process is often in the form of a stream. Described herein are an apparatus and a process for removal of hydrocarbon liquids from the elastome...
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WO/2011/128327A1 |
The present invention relates to a method for reducing residual volatiles from polymer compositions.
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WO/2011/126079A1 |
Disclosed is a method for producing a water absorbent resin powder that is improved in liquid permeability (SFC), while maintaining appropriate water absorption rate (FSR). Specifically disclosed is a method for producing a water absorbe...
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WO/2011/117302A1 |
The present invention relates to water and solvent-free polymers, in particular water and solvent-free synthetic rubber products like styrene butadiene rubber products and butadiene rubber products as well as a process for the production...
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WO/2011/117297A1 |
The present invention relates to water and solvent -free halogenated butyl rubber products as a process for the production thereof. The process comprises at least the steps of: a.) treating a fluid containing at least one halogenated but...
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WO/2011/117214A1 |
The present invention relates to a process for the production of water and solvent -free hydrogenated nitrile rubber polymers, to the hydrogenated nitrile rubbers and the use thereof. The hydrogenated nitrile rubbers comprise repeating u...
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WO/2011/117280A1 |
The present invention relates to water and solvent-free polymers, in particular water and solvent- free synthetic rubber products like non-halogenated and halogenated butyl rubber products as well as a process for the production thereof....
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WO/2011/119262A1 |
In one aspect, the present invention provides a process for forming polymeric nanoparticles, which comprises using a static mixer to create a mixed flowing stream of an anti-solvent, e.g., by introducing a liquid anti-solvent into a stat...
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WO/2011/117277A1 |
The invention relates to an energy efficient, environmentally favourable process for preparing water and solvent-free rubber ionomers and/or polymer nanocomposites comprising said rubber ionomers.
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WO/2011/117194A1 |
The present invention relates to specific water and solvent- free nitrile rubbers having specific functional groups and/or end groups, a process for the production thereof and the use thereof. This process involves removing volatile comp...
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WO/2011/113777A1 |
The invention relates to a method for producing water-absorbent polymer particles, wherein at least one inorganic phosphoric acid and/or the salt thereof and at least one organic 2-hydroxy acid and/or the salt thereof are added, wherein ...
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WO/2011/114586A1 |
Provided is a production method and a production device for polyvinyl alcohol, in which unreacted monomers can be eliminated efficiently from a polymer solution and the amount of blown methanol can be reduced. Once the concentration of a...
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WO/2011/114556A1 |
Disclosed is an abrasive for use in moisture blasting. The disclosed abrasive is formed from spherical polymer particles derived from a monomer mixture containing 0.1-20 parts by weight of a (meth)acrylate monomer containing either an et...
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WO/2011/114585A1 |
Provided is a residual monomer elimination device and a polyvinyl alcohol resin production method in which the drift of an organic solvent gas and the accumulation of a polymer liquid on a tray are hindered and unreacted monomers can be ...
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WO/2011/111856A1 |
The disclosed method for manufacturing a water-absorbing resin includes: a polymerization step in which an unsaturated monomer in an aqueous solution is polymerized; and a drying step in which a water-containing cross-linked granular pol...
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WO/2011/111855A1 |
The disclosed method for manufacturing a water-absorbing resin includes: a polymerization step in which an unsaturated monomer in an aqueous solution is polymerized; a drying step in which a water-containing cross-linked granular polymer...
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WO/2011/106047A1 |
Apparatus and methods for separating volatiles from particulates are provided. The apparatus includes a separator having an internal volume and a fluid discharge outlet, a particulate discharge outlet, a particulate inlet, and a fluid in...
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WO/2011/104139A1 |
The invention relates to a method for producing water-absorbing polymer particles, in which an aqueous polymer gel is dried in a circulating air belt dryer on a continuous conveyor belt and the surface of the conveyor belt has a pluralit...
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WO/2011/104152A1 |
The invention relates to a method for producing water-absorbing polymer particles, in which an aqueous polymer gel is dried in a circulating air belt dryer on a continuous conveyor belt and the surface of the conveyor belt has a roughnes...
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WO/2011/105347A1 |
A fluorine-containing polymer latex which exhibits environmental degradability and has a remarkably reduced emulsifier residue content can be produced by emulsion polymerization of a fluorine-containing monomer using an emulsifier that c...
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WO/2011/100129A1 |
Embodiments of the invention provide an apparatus or process for devolatilization of flowable materials (such as molten polymers with entrained or dissolved solvent or unreacted monomers or comonomers) using a plate heater having heating...
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WO/2011/095272A1 |
The present invention relates to a method for deactivation of a catalyst which is suitable for catalyzing a chemical reaction, the catalyst being sensitive to oxygen and being present in a reaction medium comprising educt, product and op...
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WO/2011/090129A1 |
Disclosed is a method for producing a water absorbent resin by drying hydrous gel-like crosslinked polymer particles having a high solid content concentration (of not less than 45% by weight, preferably of not less than 50% by weight, an...
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WO/2011/090130A1 |
Disclosed is a method for producing a water absorbent resin by drying hydrous gel particles having a high solid content concentration (of not less than 45% by weight, preferably of not less than 50% by weight, and more preferably of not ...
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WO/2011/089091A1 |
The invention relates to an energy efficient, environmentally favourable process for the preparation of brominated rubbers, in particular bromobutyl rubber, that uses a common medium for both solution polymerization and subsequent bromin...
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WO/2011/085937A1 |
The present invention relates to a polymer powder vessel, preferably a polymer powder storage and/or transport and/or degassing vessel.
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WO/2011/086578A2 |
A solid shaped composite adsorbent for reducing deactivated catalyst residues and contaminants from a post polyolefin solution polymerization mixture is disclosed. The composite adsorbent comprises 70 - 90 wt% of an alumina component; 30...
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WO/2011/073337A1 |
The invention pertains to a process for manufacturing a (per)fluoropolymer, said process comprising polymerizing one or more fluorinated monomers in the presence of a multi-phase medium, said medium comprising: (A) a water phase [phase (...
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WO/2011/075534A2 |
Methods and apparatus for the purification of isoprene, such as the purification of a bioisoprene composition from fermentor off-gas. The apparatus includes two columns that process the fermentor off-gas, which includes isoprene and vari...
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WO/2011/066892A1 |
The present invention deals with a process of producing a polymer of at least one olefin in two consecutive reactors in gas phase in the presence of an olefin polymerisation catalyst where an olefin is polymerised in a first polymerizati...
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WO/2011/058089A1 |
The present invention aims to provide a process for producing a solid polymerization catalyst component comprising the steps of (A) withdrawing a mixed stream comprising the solid polymerization catalyst component and a mixture of a firs...
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WO/2011/058088A1 |
The present invention also aims to provide a process for producing a solid polymerization catalyst component comprising the steps of (A) producing a solution comprising a transition metal compound and a solvent; (B) solidifying a compone...
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WO/2011/054789A1 |
The invention relates to a method for producing aqueous solutions of homo or copolymers of acrylic acid by means of radical polymerization of acrylic acid and optional water-soluble, monoethylene unsaturated comonomers in an aqueous medi...
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WO/2011/051168A1 |
The invention relates to a process for the isolation of (per)fluorinated polymers containing sulfonyl fluoride functional groups from a polymerization latex. The process comprises adding the polymerization latex to an aqueous electrolyte...
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WO/2011/049919A1 |
In various embodiments, provided are hydrophilically-modified silicone compositions comprising substantially spherical elastomeric microparticles, methods of making such compositions, and silicone pastes, personal care, and healthcare pr...
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WO/2011/046186A1 |
Provided is a process for the production of an aqueous polytetrafluoroethyelne (PTFE) dispersion for coagulation processing, by which an aqueous PTFE dispersion that ensures excellent coagulation of PTFE microparticles can be efficiently...
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WO/2011/042429A1 |
Process for producing water-absorbing polymer particles, wherein surface-postcrosslinked, water-absorbing polymer particles are remoisturized and delivered pneumatically, and wherein the time between remoisturization and pneumatic delive...
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WO/2011/043408A1 |
A process for producing an ethylene/vinyl alcohol copolymer is provided in which impurities resulting from saponification, such as a saponification catalyst residue, by-products, and a solvent, are removed to a high degree and with which...
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WO/2011/042468A2 |
The invention relates to a method for producing water-absorbent polymer particles, wherein surface post-cross-linked, water-absorbent polymer particles are re-wetted and classified, and wherein the time interval between re-wetting and cl...
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WO/2011/040575A1 |
Provided is a method for producing a polyacrylic acid salt-based water absorbent resin which involves the following steps in the following order: a step for storing or producing an acrylic acid; a step for preparing an aqueous monomer so...
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WO/2011/041161A1 |
Organic materials are stripped and dried in a single column having two contact zones. A stripping gas is introduced into an upper contact zone and flows through the organic material in that zone. A drying gas is introduced into a lower c...
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