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| Number | Title | Issue Date |
| 8084572 | Segmented polymers and their conjugates Segmented water soluble polymers, containing a higher molecular weight segment linked to a lower molecular weight segment, are described. In one embodiment, the polymer segments are poly(ethylene glycol) segments. The segmented polymers are functionalized and are us... | 12/27/2011 |
| 7915379 | Extraction process utilzing liquified carbon dioxide A method for removing contaminants from synthetic resin material includes contacting a particulate synthetic resin material containing at least one contaminant with a solvent other than carbon dioxide. At least a portion of the contaminant is removed from the partic... | 03/29/2011 |
| 7834138 | Segmented polymers and their conjugates Segmented water soluble polymers, containing a higher molecular weight segment linked to a lower molecular weight segment, are described. In one embodiment, the polymer segments are poly(ethylene glycol) segments. The segmented polymers are functionalized and are us... | 11/16/2010 |
| 7745566 | Methods for the purification of polymers The present invention provides methods for purifying polymers. In each embodiment of the invention disclosed herein, a supercritical fluid is contacted with an organic solution that includes a polymer to be purified dissolved in an organic solvent. The supercritical... | 06/29/2010 |
| 7671173 | Purification methods and purified polymers Metal complexing agents are used to purify polymers including conducting polymers to provide very low metal content. The process comprises precipitating the polymer in solution into a solvent system comprising the metal complexing agent. Very low levels including un... | 03/02/2010 |
| 7629436 | Contact lens extraction/hydration systems and methods of reprocessing fluids used therein The present contact lens treating systems and methods effectively remove extractable materials from contact lenses, for example, newly formed contact lenses, so that the lenses can be safely and conveniently worn, for example, for extended periods of time. Such trea... | 12/08/2009 |
| 7569658 | Process for the solvent treatment of a plastic Process for the solvent treatment of a plastic, by dissolving the plastic with a solvent and with at least one phase separation agent compatible with the solvent to form a solution, precipitating the plastic by contacting the solution with at least one non-solvent s... | 08/04/2009 |
| 7557180 | Solid phase continuous polymerisation of polyethylene terephthalate (PET) reactor and process A reactor and a process for solid phase continuous polymerization of polyethylene terephthalate (PET) in order to achieve an increase of the intrinsic viscosity (I.V.) of a low molecular weight PET pre-polymers flow. A plurality of fluidized stages in series (109... | 07/07/2009 |
| 7459520 | Poly(arylene ether) and an apparatus for producing the same A poly(arylene ether) produced by 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 poly(arylene ether) solid... | 12/02/2008 |
| 7439318 | Method for trace water analysis in cyclic siloxanes useful as precursors for low dielectric constant thin films An analytical technique for the accurate and precise measurement of trace water in chemical reagents, comprising the steps of combining a chemical reagent comprising ≦5 ppm water, with hexafluoroacetone (HFA), to form a sample mixture comprising at least the chemi... | 10/21/2008 |
| 7414100 | Polymerization process This invention relates to a process to increase the amount of polymer solute in a polymerization medium or effluent comprising introducing a fluorocarbon into the polymerization medium or effluent in an amount effective to increase the amount of polymer solute in th... | 08/19/2008 |
| 7378266 | Process for the solvent-based extraction of polyhydroxyalkanoates from biomass Improved processes for extracting polyhydroxyalkanoate from a biomass containing the polyhydroxyalkanoate including the steps of: combining the biomass containing the polyhydroxyalkanoate with a solvent selected from lower chain ketones, and mixtures thereof to form... | 05/27/2008 |
| 7365146 | Substituted polyphenylenes via supported transition metal catalysis Substituted polyphenylenes and methods for producing such substituted polyphenylenes using supported transition metal catalysis are provided. ... | 04/29/2008 |
| 7354532 | Compositions of electrically conductive polymers and non-polymeric fluorinated organic acids Compositions are provided comprising at least one conductive polymer and at least one non-polymeric fluorinated organic acid, wherein the conductive polymer is selected from a polythiophene, a polypyrrole, a polyaniline, and combinations thereof. Electronic devices ... | 04/08/2008 |
| 7342088 | Method for precipitation of polyphenylene ether Method for precipitating polyphenylene ether which decreases fine particles therein and reduces periodic fluctuations in particle size. Method provides homogeneous polyphenylene ether particles. Polyphenylene ether particles are precipitated using mixed solution com... | 03/11/2008 |
| 7329703 | Polymerized macrocyclic oligomer nanocomposite compositions The invention relates to polymers derived from macrocyclic oligomers containing organo clay fillers comprising a) a polymer derived from a macrocyclic oligomer; b) clay platelets; and c) the residue of one or more onium compounds having at least one ligand with a C | 02/12/2008 |
| 7323608 | Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds One aspect of the present invention relates to copper-catalyzed carbon-heteroatom and carbon-carbon bond-forming methods. In certain embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-sulfur bond between the sulfur atom of a t... | 01/29/2008 |
| 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 |
| 7319133 | Contact lens extraction/hydration systems and methods of reprocessing fluids used therein The present contact lens treating systems and methods effectively remove extractable materials from contact lenses, for example, newly formed contact lenses, so that the lenses can be safely and conveniently worn, for example, for extended periods of time. Such trea... | 01/15/2008 |
| 7317072 | Process for the production of polyarylene sulfide resins The present invention is a process for the production of polyarylene sulfide based resin, wherein in washing a polyarylene sulfide based resin with a mixed solvent of an aprotic organic solvent and water in a softened or molten state, the polyarylene sulfide based r... | 01/08/2008 |
| 7309756 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a comp... | 12/18/2007 |
| 7304123 | Processes for shaping macrocyclic oligoesters In one aspect, the invention relates to processes for producing substantially free-flowing shapes of macrocyclic oligoester, wherein the freshly-shaped macrocyclic oligoester is maintained at elevated temperature for a sufficient time. In certain embodiments, the sh... | 12/04/2007 |
| 7300968 | Flash spinning solution and flash spinning process using straight chain hydrofluorocarbon co-solvents A spin fluid for producing plexifilamentary products made of a polyolefin dissolved in a primary solvent of dicloromethane or 1,2-dichloroethylene with a straight chain hydrofluorocarbon co-solvent. ... | 11/27/2007 |
| 7296576 | Polymers for enhanced solubility of nanomaterials, compositions and methods therefor Poly(aryleneethynylene) polymers, poly(ferrocenylaryleneethynylene) polymers and poly(ferrocenylethynylene) polymers having properties particularly useful for solubilizing nanomaterials and for effecting subsequent re-solubilization of a solid polymer-solubilized na... | 11/20/2007 |
| 7294686 | Polymerization of aromatic monomers using derivatives of hematin Hematin, a hydroxyferriprotoporphyrin, is derivatized with one or more non-proteinaceous amphipathic groups. The derivatized hematin can serve as a mimic of horseradish peroxidase in polymerizing aromatic monomers, such as aromatic compounds. These derivatized hemat... | 11/13/2007 |
| 7294240 | Method for producing (meth)acrylic acid esters Basic (meth)acrylates IV are prepared by transesterification of alkyl (meth)acrylates I in the presence of a catalyst and working-up of the reaction mixture by distillation, by a process in which a gas or gas mixture which is inert under the reaction conditions is p... | 11/13/2007 |
| 7291692 | Polyarylene oxide and method of producing the same A method of producing a polyarylene oxide comprising a step of oxidative polymerization of a monomer represented by the general formula (1) in an organic solvent in the presence of a transition metal compound, wh... | 11/06/2007 |
| 7291696 | Composition and associated method Provided is a fluorine substituted oligomeric or polymeric ester including the reaction product of a fluorine substituted acrylate or a fluorine substituted methacrylate; an unsaturated anhydride; and an alkyl acrylate or an alkyl methacrylate. Also provided is a me... | 11/06/2007 |
| 7279505 | Radiation-curable prepolymers The present invention provides a radiation-curable prepolymer. The radiation-curable prepolymer of the invention is prepared by reacting an isocyanate-capped polyurethane with an ethylenically unsaturated amine or an ethylenically unsaturated monohydroxy compound or... | 10/09/2007 |
| 7279530 | Method for producing low friction fluorine rubber crosslinked body A fluororubber composition includes a polyol-crosslinkable fluororubber, a crosslinking accelerator, a polyol crosslinking agent and calcium hydroxide, with the crosslinking accelerator having a specific weight ratio relative to the polyol crosslinking agent, and is... | 10/09/2007 |
| 7276572 | Process for preparing aspartates The present invention relates to novel aspartates, their method of production and the use of these mono and polyaspartates as reactive components for polyisocyanates in two-component polyurethane coating compositions and for preparing polyurethane prepolymers. ... | 10/02/2007 |
| 7265190 | Process and apparatus for production of water-absorbent resin There is disclosed a process to uniformly and rapidly carry out the mixing of a monomer liquid and a polymerization initiator and thus for the resulting polymer not to adhere to the inner surface of the piping or the inside of the apparatus in an art of producing a ... | 09/04/2007 |
| 7250486 | Method and apparatus for crystallizing polymer particles The present invention is a process and apparatus for conserving loss of heat while forming and crystallizing polymer particles in a liquid. The cooling liquid quenches the polymer during particle molding to facilitate shaping. The cooling liquid cools the polymer pa... | 07/31/2007 |
| 7247350 | Solvent-poor sol-gel-systems The invention relates to a method for the production of low solvent sol-gel systems, comprising the following steps: (a) hydrolysis or condensation of a silane and/or an alkoxide and/or several alkoxides of Al, Ce, Ga, Ge, Sn, Ti, Zr, Hf, V, Nb and Ta, (b) addition ... | 07/24/2007 |
| 7241855 | Method for the manufacture of polyesters A method is described for the manufacture of polyesters of aromatic dicarboxylic acids with aliphatic and/or cycloaliphatic dials, in which an aromatic dicarboxylic acid in the presence of a monocarboxylic acid or a mixture of a monocarboxylic acid present in a satu... | 07/10/2007 |
| 7241620 | Ultra high molecular weight polyethylene fractions having narrow molecular weight distributions and methods of making and using the same Polymer fractions such as polyethylene fractions can be produced that have a PDI less than about 2.3 and a Mw greater than about 1,000,000 g/mol, 3,000,000 g/mol, or 6,000,000 g/mol. Such polyethylene fractions are separated from a UHMWPE parent polymer b... | 07/10/2007 |
| 7230144 | Methods of making intermediates from polyhydroxyalkanoates Methods of forming intermediates from PHAs are disclosed. ... | 06/12/2007 |
| 7223830 | Method and device for the production of polytrimethylene terephthalate In a process for producing polytrimethylene terephthalate by esterification of terephthalic acid with 1,3-propanediol and polycondensation, the vapors formed are rectified , the liquid phase is recirculated to the process, and the lower-boiling components are conden... | 05/29/2007 |
| 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 |
| 7217750 | Process for incorporating one or more materials into a polymer composition and products produced thereby The present invention relates to various processes that utilize one or more supercritical fluids to disperse various inorganic and organic materials, including crystalline materials, into polymeric compositions, substrates or pre-formed articles without the utilizat... | 05/15/2007 |
