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| Number | Title | Issue Date |
| 8344099 | Steaming of a polyolefin A method for treating polymer particles with steam in a steaming vessel downstream a polymerization process, the method comprising contacting polymer particles with a counter-current flow of steam, wherein the flow rate of steam entering said steaming vessel is cont... | 01/01/2013 |
| 8334362 | Method and apparatus for determining melt elasticity An apparatus and method for determining the standardized melt elasticity (sME) force of a thermoplastic polymer needed to stretch a strand of melted polymer at a speed about thirty three times faster than the speed of strand formation from a body of melted polymer u... | 12/18/2012 |
| 8252892 | Process for obtaining an elastomer in solid phase starting from its polymer solution A process for obtaining an elastomer in solid phase from its polymer solution which comprises: (a) optionally pre-concentrating the polymer solution coming from the production system by a flash process; (b) subjecting the polymer solution to a concentrating strippin... | 08/28/2012 |
| 8207291 | Process for devolatilization of polymer of an aromatic alkylene Process for devolatilization of a polymer of an aromatic alkylene, such as styrene and, in particular, an improved process using water as a stripping agent (i) in which the total amount of water to be disposed of can be reduced, (ii) which allows at least a portion ... | 06/26/2012 |
| 8058389 | Process for recovering brominated butadiene polymers from solution Brominated polybutadiene polymers are recovered from a bromination reaction solution by forming the solution into droplets, thermally stripping the solvent from the droplets, and then washing the resulting particles. The washed particles are then recovered from the ... | 11/15/2011 |
| 7893195 | Method for recovering a polymer from a liquid medium Method for recovering a polymer from a liquid medium (1) substantially containing the polymer and a solvent for the latter, wherein: (a) this liquid medium (1) is injected into a reactor (2) containing a stirred substantially monoph... | 02/22/2011 |
| 7745567 | Process for stripping polymer dispersions A process for continuously stripping a polymer dispersion comprising a heat exchanger with minimal internal obstructions for the stripper. The process is particularly adapted to dispersions that are heat and shear sensitive. The process is able to extract hydrophobi... | 06/29/2010 |
| 7393915 | Method for producing polyorganosiloxane-containing resin The object of this invention is to provide a new process for producing polyorganosiloxane-containing resin which comprises reducing volatile siloxane, characterized in that polyorganosiloxane-containing resin in a slurry state is heat-stripped in producing polyorgan... | 07/01/2008 |
| 7364668 | Process for producing an amino composition The present invention provides a process for producing an amino composition by addition reaction between a polyamine and an unsaturated hydrocarbon compound in the presence of a strongly basic alkali metal catalyst to obtain an amino composition containing not more ... | 04/29/2008 |
| 7345132 | Method of producing novolak resin Provided an industrially excellent method of producing a phenol novolak resin having an ortho ratio of 30% or more by: (1) a method of reacting a phenol and an aldehyde using an oxalic acid catalyst at 110 to 160° C. under pressure; or (2) a method of reacting a ph... | 03/18/2008 |
| 7341142 | Elastomer composite materials in low density forms and methods A bale of elastomer composite is formed of elastomer and filler, the bale having a void volume of at least 3%. In another aspect, a container is provided, at least a portion of the container being occupied by elastomer composite pieces of elastomer and filler, where... | 03/11/2008 |
| 7314909 | Method of reducing the styrene content of a poly(arylene ether)/polystyrene blend, and articles comprising the resulting thermoplastic resin A poly(arylene ether)/polystyrene blend may be prepared by melt kneading a carboxylic acid compound, a poly(arylene ether), and a polystyrene to form an intimate blend, and steam stripping the intimate blend, where melt kneading is conducted with a specific energy c... | 01/01/2008 |
| 7304124 | Process for stripping volatile substances from dispersion comprising polymer particles and process for producing toner A stripping process is provided which continuously strips volatile substances from a dispersion containing a polymer particles through stripping the volatile substances from a dispersion by blowing an inert gas into the dispersion to draw the volatile substances int... | 12/04/2007 |
| 7291244 | Pulp flaker Methods for conveying, mixing, leveling, and flaking dewatered pulp to produce pulp flakes suitable to be used in a dryer. Methods for producing a consistent flow rate of pulp, and, for producing uniform pulp flakes in terms of pulp flake size and pulp flake moistur... | 11/06/2007 |
| 7287534 | Cleaning of apparatus in which meth(acrylic) acid-containing organic solvents have been treated and/or generated A process for cleaning apparatus in which (meth)acrylic acid-containing organic solvents have been treated and/or generated and contain fouling and/or polymer and residues of organic solvent, in which the apparatus contents are subjected to a steam distillation in t... | 10/30/2007 |
| 7279244 | Fuel cell, polyelectrolyte and ion-exchange resin use for same The object of this invention is to provide a solid polymer electrolyte which is excellent in durability and of low cost, and membranes, solutions for electrode catalyst coating, membrane/electrode assemblies and fuel cells which use the electrolyte. According to thi... | 10/09/2007 |
| 7259231 | Extraction and fractionation of biopolymers and resins from plant materials A method for the extraction, separation, fractionation and purification of biopolymers from plant materials using supercritical and/or subcritical solvent extractions is disclosed. Specifically, the process can be used for the separation of resins and rubber from gu... | 08/21/2007 |
| 7238773 | Countercurrent stripping pipe Countercurrent stripping pipe for removing volatile organic constituents from reaction products, having a column pipe (201) composed of a plurality of pipe sections (201a-d), in which trays (202) are arranged, connections (205, ... | 07/03/2007 |
| 7235587 | Diesters containing two crylene or fluorene moieties, sunscreen compositions containing the same, and methods of photostabilizing a sunscreen compositions containing the same Diesters that include one or more of a crylene and/or a fluorene moiety, and sunscreen compositions including a mixture of a photoactive compound and one or more of a diester that includes one or more of a crylene and/or a fluorene moiety are described herein. Also ... | 06/26/2007 |
| 7226989 | Method of separating a polymer from a solvent A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising an upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents... | 06/05/2007 |
| 7208555 | Process for preparing polyvinylidene fluoride copolymer The present invention provides a polyvinylidene fluoride copolymer capable of forming a uniform film, a solution of the copolymer and a thin film comprising the polyvinylidene fluoride copolymer. The polyvinylidene fluoride copolymer of the present invention is char... | 04/24/2007 |
| 7153929 | Copolymers, devoid of rubber, with low residual monomer content and a method and device for producing the same Rubber-free copolymers of unsaturated monomers selected from the group comprising styrenes and vinyl cyanides are disclosed. The copolymers that contain 65 to 80 wt. %, of styrene and 20 to 35 wt. % of acrylonitrile are characterized in their low content of residual... | 12/26/2006 |
| 7150806 | Spiral-shaped lamp for UV curing of coatings and bonding for a digital versatile disk (DVD) or compact disk (CD) A spiral-shaped lamp (10) is used for disk manufacturing processes, such as curing of coating or bonding, to provide uniform intensity of UV energy to the circular disk without requiring relative motion between the disk and the lamp during the curing process.... | 12/19/2006 |
| 7135546 | Method for recycling vinyl polymer-based articles Process for recycling an article based on at least one vinyl chloride or vinylidene chloride polymer, according to which: (a) the article is cut up into fragments with a mean size of 1 cm to 50 cm in the case where it would exceed these sizes; ... | 11/14/2006 |
| 7124768 | Method for transferring aqueous polymer dispersions from one container to another container A method of transferring an aqueous polymer dispersion with a temperature ≧50° C. from a vessel 1 via a connecting line to a vessel 2 is described. ... | 10/24/2006 |
| 7122619 | Method of separating a polymer from a solvent A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising an upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents... | 10/17/2006 |
| 7119157 | Methods of preparing EP(D)M elastomer, of controlling yield thereof, and of recovering the same Disclosed herein is a method of preparing an EP(D)M elastomer, which includes pre-cooling a reactive solvent to −80 to −100° C.; and polymerizing ethylene, at least one higher α-olefin having 3 to 18 carbons, and selectively, at least one conjugated or non-con... | 10/10/2006 |
| 7109290 | Polymer transfer within a polymerization system A method for transferring polymer within a polymerization system, comprising continuously withdrawing the polymer from the reactor and conveying the polymer from a reactor to a flash chamber via a pressure differential between the reactor and the flash chamber. A me... | 09/19/2006 |
| 7101926 | Free-flowing polymer composition The present invention relates to substantially free-flowing polymer particles. The polymer particles are those which have a one millimeter penetration temperature of less than about 75° C. as determined by thermal mechanical analysis or an unconfined yield strength... | 09/05/2006 |
| 7078458 | Method for production of hydrophilic resin In the production of an acrylate polymer by the steps of preparing a water-soluble unsaturated monomer having a ratio of neutralization in the range of 30 to 100 mol % and containing 50 to 100 mol % of an acrylate and then polymerizing the monomer, a method for the ... | 07/18/2006 |
| 7074368 | Batch-type polyester polymerization apparatus A batch-type polyester polymerization apparatus manufactured by assembling a conventional batch-type apparatus with a thin film tower. The batch-type polyester polymerization apparatus is advantageous in that oligomer is polymerized while forming a polyester thin fi... | 07/11/2006 |
| 7038008 | Method for the processing of a liquid reaction discharge of the cationic polymerization of isobutene A process for working up a liquid reaction discharge of the cationic polymerization of isobutene, which substantially comprises polyisobutene, unconverted isobutene and an inert diluent, in which the reaction discharge is heated and is let down into a flash containe... | 05/02/2006 |
| 7022743 | Fuel cell, polyelectrolyte and ion-exchange resin used for same The object of this invention is to provide a solid polymer electrolyte which is excellent in durability and of low cost, and membranes, solutions for electrode catalyst coating, membrane/electrode assemblies and fuel cells which use the electrolyte. According to thi... | 04/04/2006 |
| 6984706 | Diene rubber, process for production thereof, rubber compositions, process for producing the same, and crosslinked rubbers A diene rubber (A) having a weight average molecular weight (Mw) of 100,000 to 3,000,000, an Mw/number average molecular weight (Mn) ratio of 1.30 to 2.50, and an Mw/peak top molecular weight (Mp) ratio 0.70 to 1.30. A rubber composition comprising the diene rubber ... | 01/10/2006 |
| 6982026 | Azeotropic distillation process for producing organic acids or organic acid amides Disclosed herein are methods for the recovery of at least one of an organic acid or an organic acid amide, such as a heat stable lactic acid or lactamide, from a feed stream which contains the organic acid and/or organic acid amide. The feed stream is mixed with at ... | 01/03/2006 |
| 6956101 | Method and installation for extracting a monomer from an aqueous slurry containing a polymer Process and installation for extracting a monomer from an aqueous broth of a polymer, in which, after the broth has been heated, the broth is subjected to a depressurization in a depressurization chamber and is then introduced into a vertical column, divided into se... | 10/18/2005 |
| 6949622 | Method of separating a polymer from a solvent A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising an upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents... | 09/27/2005 |
| 6924350 | Method of separating a polymer from a solvent A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising as upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents... | 08/02/2005 |
| 6919473 | Photostabilizers, UV absorbers, and methods of photostabilizing a sunscreen composition Derivatives of fluorene, including ester derivatives of cyano(9H-fluoren-9-ylidene) acetic acid, and sunscreen compositions including a mixture of a photoactive compound and an ester derivative of cyano(9H-fluoren-9-ylidene) acetic acid are disclosed herein. Also di... | 07/19/2005 |
| 6884851 | Polyolefins and process for manufacturing them Process for producing polyolefins, comprising the following steps: a) grafting of acid groups onto polyolefins by means of a graftable monomer bearing at least one functional group chosen from a carbonyl and an acid anhydride, opti... | 04/26/2005 |
