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| Number | Title | Issue Date |
| 8071714 | Method for separating and purifying crystallisable organic compounds The invention relates to a process for separating and/or purifying organic compounds susceptible to crystallization by means of crystallizing and dissolving comprising the following steps: a) depositing the composition in the head ... | 12/06/2011 |
| 8063176 | Method and device for the crystallization of polyester material A method for the manufacture of crystallized polyesters with or without subsequent solid state polycondensation for the manufacture of bottles, foils, films and technical high-performance fibres, or with or without subsequent dealdehydization for the manufacture of ... | 11/22/2011 |
| 7947803 | Apparatus and method for recovering polymer The present invention provides an apparatus for recovering a polymer from polymer solution, and a method of recovering a polymer using the apparatus. The apparatus includes a polymer solution-storage tank for storing a polymer solution; a polymer solution feeding pu... | 05/24/2011 |
| 7879972 | Method of drying a material having a cohesive phase A method for drying a material such as a polymer hydrogel which passes through a cohesive phase as it dries is disclosed. The method comprises agitating a composition while removing liquid until the solids content of the composition reaches a level at which the comp... | 02/01/2011 |
| 7851585 | Polyacetal compositions with improved tribological properties The invention relates to polyacetal compositions comprising a mixture of (i) a polyacetal resin, (ii) p-aramid particles and (III) a vinyl-terminated dimethyl siloxane polymer. These compositions are useful in preparing molded articles exhibiting a good balance betw... | 12/14/2010 |
| 7842779 | Process for producing granular carboxylated-polymer particle and granular carboxylated-polymer particle An object of the invention is to provide a method for easily producing granular carboxyl group-containing polymer particles, which have a high bulk density and readily swell in water. The invention provides a method for producing a granular carboxyl group-containing... | 11/30/2010 |
| 7772362 | Treatment method for imparting self-healing and shape memory properties to certain CBDO copolymers A method of treating an amorphous CBDO polymer to impart self healing and shape memory properties by heat treatment, and products resulting from such method are described. An amorphous CBDO copolymer may include a copolyester prepared by reacting an aromatic dicarbo... | 08/10/2010 |
| 7432339 | Inferred water analysis in polyphenylene sulfide production A method for producing polyphenylene sulfide (PPS) polymer, including polymerizing reactants in a reaction mixture in a vessel to form PPS polymer in the vessel, measuring values of operating variables of the vessel and/or PPS process, and determining the amount of ... | 10/07/2008 |
| 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 and a separator; (b) carrying out a polymerization reaction in the reac... | 08/12/2008 |
| 7405266 | Sterically hindered poly(ethylene glycol) alkanoic acids and derivatives thereof The invention provides a sterically hindered polymer that comprises a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative, wherein the carbon adjacent to the carbonyl group of... | 07/29/2008 |
| 7368526 | Functionalized porous poly(aryl ether ketone) materials and their use Functionalized porous poly(aryl ether ketone) articles are prepared by reacting ketone groups in the backbone of poly(aryl ether ketone) polymer with a primary amine reagent. Preferred functional primary amines are primary aliphatic amines or substituted hydrazines ... | 05/06/2008 |
| 7351243 | High strength bioresorbables containing poly-glycolic acid Polymer compositions comprising poly-glycolic acid (PGA) or a functional derivative thereof with a tensile strength of at least 1200 MPa are disclosed. Processes suitable for manufacturing said compositions are also described, comprising rendering PGA into an amorph... | 04/01/2008 |
| 7329723 | Thermal crystallization of polyester pellets in liquid A process for thermally crystallizing a polyester polymer by introducing pellets into a liquid medium having a temperature of at least 140° C. within a liquid medium zone and crystallizing the submerged pellets at or above the vapor pressure of the liquid medium wi... | 02/12/2008 |
| 7321021 | Removing impurities from polythiophene Impurities are removed from polythiophene by mixing a composition comprising polythiophene, water and an organic liquid at a temperature at which the organic liquid dissolves the polythiophene; allowing an aqueous phase to separate from an organic phase and recoveri... | 01/22/2008 |
| 7307132 | Method for producing low-odor hydrogel-forming polymers This invention relates to a process for preparing a low-odor hydrogel-forming acrylic acid polymer, which comprises the steps of: a) preparing a polymeric hydrogel by free-radically polymerizing a monomer composition comprising at least 50% by weight of acrylic acid... | 12/11/2007 |
| 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 |
| 7304125 | Process for the preparation of polymers from polymer slurries A process for manufacturing a polymer having a molecular weight in excess of 5,000, and preferably in excess of 40,000, comprises, producing a polymerized reaction mass in which the polymer is dispersed, the reaction mass including solvent(s), unreacted monomer and ... | 12/04/2007 |
| 7288601 | Method for production of water-absorbent resin and plow-shaped mixing device A method for mixing a water-absorbent resin and a surface cross-linking agent-containing solution to repress aggregates is equipped. The water-absorbent resin and the surface cross-linking agent-containing solution is mixed with a plow-shaped mixing device which is ... | 10/30/2007 |
| 7271236 | Preparation method of polyester resin A preparation method of a polyester resin includes: under predetermined depolymerization conditions, mixing a polyester resin, a resin dissolvent and a polycondensation catalyst to depolymerize the polyester resin and form a first reaction mixture; adding a first mo... | 09/18/2007 |
| 7244810 | Poly(trimethylene-ethylene ether) glycols A poly(trimethylene-ethylene ether)glycol is disclosed. The poly(trimethylene-ethylene ether)glycol is, preferably, prepared by the polycondensation of 1,3-propanediol reactant and ethylene glycol reactant. The composition is preferably used in breathable membranes,... | 07/17/2007 |
| 7232853 | Production process of colored fine particulate resins, colored fine particulate resins, and coloring process of articles Colored fine particulate resins can each be produced by bringing a colored resin, which comprises a thermally fusible resin and a colorant evenly distributed in the thermally fusible resin, into a molten state; forming the colored resin, which is in the molten state... | 06/19/2007 |
| 7223829 | Polyketone solution A solution of a polyketone as a copolymer of carbon monoxide and one or more olefins, wherein 90 wt % or more of said copolymer comprises carbon monoxide units and olefin units, and a solvent is an aqueous solution of at least one member selected from the group cons... | 05/29/2007 |
| 7205377 | Method for the preparation of a poly(arylene ether), and related compositions A method for preparing a poly(arylene ether) with a reduced level of powder fines is described. In one embodiment, the method comprises oxidatively coupling a monohydric phenol in the presence of a solvent and a complex metal catalyst, to produce a poly(arylene ethe... | 04/17/2007 |
| 7193006 | Process for continuous production of water-absorbent resin product There is disclosed a process for continuous production of a water-absorbent resin product by which the water-absorbent resin product having high properties can continuously be produced easily and inexpensively with stable constant quality. In addition, there is disc... | 03/20/2007 |
| 7151158 | Method of preparing a poly(arylene ether), apparatus therefor, and poly(arylene ether) prepared thereby A method of precipitating a poly(arylene ether) includes combining a poly(arylene ether) solution with an antisolvent at a shear rate of greater than 50,000 sec−1. The high shear mixing conditions produce a poly(arylene ether) dispersion in which the po... | 12/19/2006 |
| 7148315 | Monomer addition techniques to control manufacturing of bioabsorbable copolymers Monomer addition methodology is provided to adjust monomer addition rates to a polymerization reactor. Advantages of the invention include control of bioabsorbable copolymer structure, improvement of monomer conversion, control of reaction temperature, and reduced r... | 12/12/2006 |
| 7119132 | Continuous neat polymerization and ambient grinding methods of polyolefin drag reducing agents A process for continuously producing a polymer drag reducing agent (DRA) is described. The process concerns mixing a monomer and a catalyst in at least one continuously stirred tank reactor (CSTR) to form a mixture. The mixture is continuously injected into a volume... | 10/10/2006 |
| 7105633 | Soluble poly(aryl-oxadiazole) conjugated polymers This invention discloses a class of soluble poly(arylene-oxadiazole) polymers and copolymers comprising at least 20 repeat units, which may be the same or different, represented by the formula: wherein Arom can b... | 09/12/2006 |
| 7094838 | Fluorine-containing polymer powder and method for production thereof and coated article A stabilized fluorine-containing polymer powder having an average particle size of 5 to 100 μm is prepared by contacting a fluorine-containing polymer powder, which is prepared by milling the fluorine-containing polymer and removing fine particles, fibrous particle... | 08/22/2006 |
| 7071252 | Plasticizer compositions for non-aqueous plastisols Monoesters derived from a dihydric alcohol and a carboxylic acid such as benzoic acid are secondary plasticizers for non-aqueous and solventless plastisols containing primary plasticizers that do not contain unreacted alkanol groups. ... | 07/04/2006 |
| 7053168 | Method for preparing polyimide and polyimide prepared thereby A method for preparing a polyimide includes introducing a mixture of an oligomer and a solvent to an extruder, removing solvent via at least one extruder vent, and melt kneading the oligomer to form a polyimide. The polyimide has a low residual solvent content. The ... | 05/30/2006 |
| 7049393 | Techniques for the preparation of highly fluorinated polyethers A process for preparing a fluorinated poly(arylene ether) comprising the repeating unit: wherein n provides a molecular weight up to about 30,000 to 100,000, X represents one of following groups: none, ketone, su... | 05/23/2006 |
| 7044475 | Cover-integrated gasket A gasket integrated with a cover wherein a gasket material composed of a thermoplastic elastomer composition is integrally fixed to the cover having a shape of multistep contraction over at least two contraction steps, a gasket wherein the cover and the gasket are i... | 05/16/2006 |
| 7041773 | Polyimide sulfones, method and articles made therefrom Polyimide sulfone resins are provided with a glass transition temperature of from 200–350° C., residual volatile species concentration of less than 500 ppm and a total reactive end group concentration of less than about 120 milliequivalents/kilogram resin. The re... | 05/09/2006 |
| 7026442 | Storage and/or transportation method of alkoxy (poly) alkylene glycol-containing materials A storing and/or transferring method of an alkoxy(poly)alkylene glycol-containing material for cement additive polymer which comprises a step of filling a vessel, a step of storing and/or transferring and a step of drawing out, in ... | 04/11/2006 |
| 6995235 | Methods of producing polyolefins and films therefrom Films and methods of forming films comprising first combining in a reactor olefins, a catalyst composition and an activator; wherein the activator is present from less than 50 wt % in a diluent by weight of the activator and diluent; followed by isolating a polyolef... | 02/07/2006 |
| 6992165 | Method for making amine-terminated polyarylene polyethers A method for making an amine-terminated polyarylene polyether thermoplastic in which a liquid/solid slurry reaction mixture is formed in an oxygen-free atmosphere. The reaction mixture is composed of a dihydroxyaromatic compound, a dihaloaromatic compound, an amino-... | 01/31/2006 |
| 6992148 | Recovery of antimony catalyst residues from bromination reaction mixtures A process for brominating a styrenic polymer in an organic solvent in the presence of an antimony trihalide catalyst such that a reaction mass containing brominated styrenic polymer in an organic phase is formed is improved by mixing hydrochloric acid or hydrobromic... | 01/31/2006 |
| 6984717 | Phosphorous containing materials, their preparation and use The present invention is directed towards phosphorous containing organic materials, processes for making them and uses thereof. These materials preferably impart and/or exhibit resistance to attack, for example they may be useful as flame retardant additives and/or ... | 01/10/2006 |
| 6982312 | Process for producing polyarylene sulfide There is disclosed a process for producing a polyarylene sulfide (PAS) which comprises reacting a sulfur source with a dihalogenated aromatic compound in the presence of an aprotic organic solvent, characterized in that the process comprises at least one polymerizat... | 01/03/2006 |
