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| Number | Title | Issue Date |
| 8183338 | Sterically hindered poly(ethylene glycol) alkanoic acids and derivatives thereof The invention provides a sterically hindered polymers and conjugates formed therefrom that comprise a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative prior to conjugation,... | 05/22/2012 |
| 7960502 | 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... | 06/14/2011 |
| 7674879 | 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... | 03/09/2010 |
| 7485696 | Oxytetramethylene glycol copolymer and method for producing the same Disclosed is an oxytetramethylene glycol copolymer, which is obtained by copolymerizing tetrahydrofuran and neopentyl glycol and which has a specific number average molecular weight Mn, a specific molecular weight distribution Mw/Mn, a specific neopentyl glycol copo... | 02/03/2009 |
| 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 |
| 7378453 | Surface crosslinking treatment method of water-absorbing resin powder A surface crosslinking treatment method of a water-absorbing resin powder is disclosed that can overcome various problems in production encountered in the production of surface crosslinked water-absorbing resin powders on an industrial scale and can produce a water-... | 05/27/2008 |
| 7323503 | Process for producing ethylene-vinyl alcohol copolymer resin, process for producing pellets and resin pellets A process for producing an ethylene-vinyl alcohol copolymer resin, including feeding EVOH into an extruder, keeping the temperature of the melting resin in the extruder at 70 to 170° C., adjusting the amount of water in the extruder so that the water content right ... | 01/29/2008 |
| 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 |
| 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 |
| 7238756 | Polymerization process and control of polymer composition properties Methods of controlling the flow index and/or molecular weight split of a polymer composition are disclosed. The method of producing a polymer composition in one embodiment comprises incorporating a high molecular weight polymer into a low molecular weight polymer to... | 07/03/2007 |
| 7217783 | Oxytetramethylene glycol copolymer and process for producing the same An oxytetramethylene glycol copolymer obtained by copolymerizing tetrahydrofuran and neopentyl glycol which has a specific number average molecular weight Mn, a specific molecular weight distribution Mw/Mn, a specific neopentyl glycol copolymerization whole ratio N | 05/15/2007 |
| 7208436 | Catalyst components for the polymerization of olefins Catalyst components for the polymerization of olefins CH2═CHR, wherein R is hydrogen or a hydrocarbon radical having 1–12 carbon atoms, comprising Mg, Ti, Cl, OR groups, where R is a C1–C10 alkyl group optionally containing heteroatoms, and an ether... | 04/24/2007 |
| 7160980 | Polyketones Method of purifying a polymeric material of a type which includes (A) phenyl moieties; (B) carbonyl and/or sulphone moieties; and; (C) ether and/or thioether moieties. The method includes contacting the polymeric material with a solvent formulation which is at a tem... | 01/09/2007 |
| 7157518 | Method for preparing an organo-silicon sol and materials obtained from such a sol The method consists in hydrolysing an initial volume Vse of a precursor material comprising at least one polyalkoxysilane with a quantity of water such that x ... | 01/02/2007 |
| 7148320 | Polymer purification Polymers derived from various monomers are purified by fractionalization of the crude polymers in a solvent/non solvent system via reverse precipitation. ... | 12/12/2006 |
| 7071250 | Method for producing ethylene-vinyl alcohol copolymer resin composition A method for producing an ethylene-vinyl alcohol copolymer resin composition, said method comprising: (a) introducing into an extruder an ethylene-vinyl alcohol copolymer having a water content of at least 0.5 wt %; (b) further introducing into said extruder a liqui... | 07/04/2006 |
| 7064162 | Moisture curable acrylic sealants Improved sealant compositions and processes for producing sealant are described. The processes include contacting in a reactor under reaction conditions a polymer containing at least one vinyl, acrylate, or methacrylate monomer and at least one silane comonomer, at ... | 06/20/2006 |
| 7049394 | Method for preparing free flow resin The present invention provides a method for producing a free flowing and/or non clumping resin that includes prior to drying, shrinking the resin under agitation. In one variant of the invention, the is a resin used in solid phase synthesis of peptides. In another a... | 05/23/2006 |
| 7022813 | Process for purifying and reusing solvent used to remove extractables A process for treating biomedical devices, especially contact lenses, involves contacting polymeric devices containing extractables with a solvent that dissolves and thereby removes the extractables from the device, treating the solvent to remove extractables from t... | 04/04/2006 |
| 7019106 | Lactic acid polymer and process for producing the same A process for producing a lactic acid polymer of 15,000 to 50,000 in weight-average molecular weight, the content of polymeric materials having not more than about 5,000 in weight-average molecular weight therein being not more than about 5% by weight, characterized... | 03/28/2006 |
| 7005485 | Process for producing polyolefins A process is provided that produces polyolefins. The process comprises mixing a first stream, which comprises at least one catalyst deactivating agent, with a second stream, which comprises at least one polyolefin, at least one catalyst, at least one diluent, and at... | 02/28/2006 |
| 6995192 | 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... | 02/07/2006 |
| 6967230 | Process for producing polyolefins A process is provided that produces polyolefins. ... | 11/22/2005 |
| 6943212 | Deproteinized natural rubber latex, method of preparing the same, rubber product using the same, and proteolytic agent for deproteinized natural rubber latex The present invention provides a deproteinized natural rubber latex wherein coagulation of a rubber component does not occur when the concentration of calcium ions (Ca2+) is 0.01 mol/L or less and coagulation of the rubber component occurs when the concen... | 09/13/2005 |
| 6916853 | Compositions containing particles of highly fluorinated ion exchange polymer Solid and liquid compositions containing particles of highly fluorinated ion-exchange polymer having sulfonate functional groups with an ion exchange ratio of less than about 33. The compositions contain at least about 25% by weight of polymer particles having a par... | 07/12/2005 |
| 6911489 | Methods for preparing agglomerated pellets of polytetrafluoroethylene and molded articles and the agglomerated pellets of polytetrafluoroethylene and molded articles prepared thereby PTFE pellets with good bulk density, homogeneity, and flowability properties may be obtained by: (1) wetting a PTFE powder with a solvent, to obtain a wetted PTFE powder; (2) forming the wetted PTFE powder into agg... | 06/28/2005 |
| 6905785 | Polymeric fluorescent substance, production thereof and polymer light-emitting device Provided is a method of producing a polymeric fluorescent substance wherein one or more monomers represented by the general formula (1) are polymerized in the presence of a zerovalent nickel complex, X1—Ar1—X2 (1) ... | 06/14/2005 |
| 6906168 | Process for fractionation/concentration to reduce the polydispersivity of polymers Methods of reducing the amount of undesirable by-products in the production of polymers are disclosed. The resulting polyetherimides have lower polydispersivity and enhanced thermomechanical properties. In some embodiments, cyclic and low molecular weight linear oli... | 06/14/2005 |
| 6878796 | Solvent systems for polymeric dielectric materials Aromatic aliphatic ether solvents, such as anisole, methylanisole, and phenetole, have been found useful in formulating coating solutions of polymeric dielectric materials and as a clean up solvent in the coating process. A process for forming a dielectric film on a... | 04/12/2005 |
| 6806349 | Methods of fabrication of deaggregated electrically conductive polymers and precursors thereof Deaggregated substituted and unsubstituted polyparaphenylenes, polyparaphenylevevinyles, polyanilines, polyazines, polythiophenes, poly-p-phenylene sulfides, polyfuranes, polypyrroles, polyselenophene, polyacetylenes formed from soluble precursors and combinations t... | 10/19/2004 |
| 6774157 | Biocompatible medical devices with polyurethane surface A system for improving the biocompatibility of medical devices present within a patient's body. In one embodiment, the present subject matter reduces the thrombogenicity of polyurethane materials in contact with the blood of a patient. In one embodiment, the medical... | 08/10/2004 |
| 6743891 | Method for producing ethylene-vinyl alcohol copolymer resin composition The present invention provides a method for producing an ethylene-vinyl alcohol copolymer resin composition, said method comprising: a) introducing into an extruder an ethylene-vinyl alcohol copolymer resin having a water content of at least 0.5 weight % and an addi... | 06/01/2004 |
| 6713598 | Method to make a solid polymeric phosphate and resinous compositions containing it Disclosed is a method for the preparation of polymeric phosphate flame retardants with a molecular weight of at least about 1500 and a softening temperature of at least about 10° C. comprising the steps of (a) reacting a phosphorus oxyhalide with a monohydroxyaroma... | 03/30/2004 |
| 6632916 | Composite type conductive polymer and process of producing aromatic compound A composite type conductive polymer having a phenylene vinylene backbone with a condensed hydrocarbon ring system introduced into the backbone to form a bend in a linear structure of the phenylene vinylene backbone.... | 10/14/2003 |
| 6624237 | Method for preparing an organo-silicon sol and materials obtained from such sol The method consists in hydrolyzing an initial volume Vsi of a precursor material comprising at least one polyalkoxysilane with a quantity of water such that ##EQU1## where x H2 O and x Si represent the number of moles of H2 O and ... | 09/23/2003 |
| 6552093 | Compositions containing particles of highly fluorinated ion exchange polymer Liquid compositions containing particles of highly fluorinated ion-exchange polymer having sulfonate functional groups with an ion exchange ratio of less than about 33. The compositions contain at least about 25% by weight of polymer particles having a pa... | 04/22/2003 |
| 6552163 | Method for fractioning poly (ethylene oxide) formed using a metallic cyanide catalyst A poly(ethylene oxide) polymer having low and high molecular weight fractions is fractionated by dissolving the polymer in a solvent for the low molecular weight fraction. A good separation of the low and high molecular weight fractions can be obtained. W... | 04/22/2003 |
| 6524657 | Solvent systems for polymeric dielectric materials Aromatic aliphatic ether solvents, such as anisole, methylanisole, and phenetole, have been found useful in formulating coating solutions of polymeric dielectric materials and as a clean up solvent in the coating process. A process for forming a dielectri... | 02/25/2003 |
| 6518395 | Method for producing reactive coating powder compositions Process for preparation powder coating formulations by pressure release of a composition comprising a low molecular mass inert compound, with release of the low molecular mass inert compound, in which process one or more base resins and one or more harden... | 02/11/2003 |
| 6489373 | Method for decomposition and recovery of polyurethane resin The present invention provides a method of recovering a polyamine compound and/or a polyol compound useful for starting materials of polyurethane resin in an industrially advantageous manner by first dissolving the polyurethane resin such as polyurethane ... | 12/03/2002 |
