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| Number | Title | Issue Date |
| 7825214 | Purified styrene-maleic anhydride polymer binder An aqueous binding composition is provided comprised of a polyanhydride based polymer, which polyanhydride based polymer has been purified through the use of an azeotrope. The resulting binder is effective, particularly for binding glass fibers, yet substantially od... | 11/02/2010 |
| 7592415 | Infrared solvent stripping process A process for stripping chemically bonded spinning solvent from a solution-spun nonwoven web comprising the steps of providing a nonwoven web comprising solvent-laden polymeric fibers having average fiber diameters of less than about 1 micrometer, and transpo... | 09/22/2009 |
| 7348396 | Modified polyethylenephosphinic acids and their salts The invention relates to polymeric phosphinic acids and their salts of the formula (I) where X is hydrogen or 1/m of a metal of valency m, or is a protonated nitrogen base, R1 and R... | 03/25/2008 |
| 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 |
| 7268194 | Continuous slurry polymerization process and apparatus A process of converting a loop reactor into multiple loop reactors comprising starting with a loop reactor comprising at least 8 vertical legs, at least two non-vertical conversion runs, each non-vertical run connected in fluid flow communication with two vertical l... | 09/11/2007 |
| 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 |
| 7195710 | Systems and methods using multiple solvents for the removal of lipids from fluids This invention is directed to systems and methods for removing lipids from a fluid or from lipid-containing organisms from a fluid, such as plasma. These systems combine a fluid with at least one extraction solvent, which causes the lipids to separate from the fluid... | 03/27/2007 |
| 7160492 | Orthopaedic device for implantation in the body of an animal and method for making the same A method of preparing a orthopaedic implant which includes removing low-molecular-weight compounds from a mass of polymeric material from which the implant is made. ... | 01/09/2007 |
| 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 |
| 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 |
| 7129320 | Modified polyethylenephosphinic acids and their salts The invention relates to polymeric phosphinic acids and their salts of the formula (I) where X is hydrogen or 1/m of a metal of valency m, or is a protonated nitrogen base, R1 | 10/31/2006 |
| 7129312 | Adhesion promoters for monomer-free reactive polyurethanes Polyurethane compositions are produced in a two-stage method. In a first step, a diol component with a molecular weight of less than 2000 is reacted with a monomeric diisocyanate with a molecular weight of less than 500 and the unreacted monomeric diisocyanate is re... | 10/31/2006 |
| 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 |
| 7091309 | Process for the manufacture of temperature-sensitive polymers Process for manufacturing temperature-sensitive polymers utilizing a heat transfer fluid comprising a hydrocarbon fluid selected from aliphatic hydrocarbons, alicyclic hydrocarbons, aliphatic- or alicyclic-substituted aromatic hydrocarbons, or mixtures thereof, the ... | 08/15/2006 |
| 7074736 | Hydrozirconated matrix and process for polyolefin production A hydrozirconated matrix for the production of polyolefins is disclosed. The hydrozirconated matrix is prepared from the reaction of an organozirconium composition and an olefin based material. A process is described for using the hydrozirconated matrix to prepare a... | 07/11/2006 |
| 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 |
| 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 |
| 7026433 | Continuous bioreactor process for the preparation of polyester cyclic oligomers A continuous process for the process for the enzyme-catalyzed preparation of cyclic ester oligomers from linear ester oligomers. The process may use a linear or recirculating reactor. ... | 04/11/2006 |
| 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 |
| 6979720 | manufacture of certain cyclic ester oligomers Enzymes which are capable of catalyzing esterifications and/or transesterifications such as selected lipases and esterases can, under specified conditions, convert certain lower linear oligomers of polyesters to their cyclic ester oligomers in quantities greater tha... | 12/27/2005 |
| 6974858 | Process of fractionating polymers Provided herein is a process of fractionating ferroelectric, preferably vinylidene fluoride polymers using a solvent having at least one polarizable functional group, and a precipitant. The composition of the fractionated ferroelectric polymers is selected so as to ... | 12/13/2005 |
| 6936685 | Method for isolating polyorganosiloxanes The invention relates to a method for isolating polyorganosiloxanes from an aqueous dispersion, wherein the polyorganosiloxanes are separated from water in a dissolved form with the aid of an extraction agent. ... | 08/30/2005 |
| 6926868 | Continuous slurry polymerization volatile removal A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent of a slurry loop reactor containing a flow of slurry therein, comprising a discharge conduit extending a distance in... | 08/09/2005 |
| 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 |
| 6884866 | Bulk drying and the effects of inducing bubble nucleation The present invention discloses apparatus and methods of inducing bubble nucleation to overcome problems commonly associated with preservation by foam formation. Specifically, the invention relates to methods of using bubble nucleation in foam formation to preserve ... | 04/26/2005 |
| 6790934 | Method for purification of aromatic polyethers Aromatic polyethers are prepared by displacement polymerization reaction in the presence of a water-immiscible solvent with boiling point at atmospheric pressure of greater than 110° C. and a density ratio to water of greater than 1.1:1 at 20-25° C. The polyethers... | 09/14/2004 |
| 6787633 | Method and apparatus for preparing a poly(arylene ether) A method of precipitating a poly(arylene ether) includes preparing a poly(arylene ether) solution comprising a poly(arylene ether) and a solvent, combining the poly (arylene ether) solution with an antisolvent to form a poly(arylene ether) dispersion comprising a po... | 09/07/2004 |
| 6664366 | Thermally stable polymers, method of preparation, and articles made therefrom Thermally stable polymers comprising chain members derived from at least one 1,3-dihydroxybenzene moiety and at least one aromatic dicarboxylic acid moiety, said polymer being substantially free of anhydride linkages linking at least two mers of the polym... | 12/16/2003 |
| 6653044 | Chemical amplification type resist composition A chemical amplification type resist composition uses as the base resin a polymer having a molecular weight dispersity of 1.0 to 1.5 which is a polymer comprising recurring units of formula (1) and recurring units of formula (2) or a polymer comprising re... | 11/25/2003 |
| 6630567 | Process for the preparation of polyaniline salt The present invention provides a process for preparing electrically conductive polyaniline salts in various organic solvents using cost-effective protonic acids and where the solution is optically transparent.... | 10/07/2003 |
| 6596843 | Thermally stable polymers, method of preparation, and articles made therefrom Thermally stable polymers comprising resorcinol arylate chain members are prepared using an interfacial method comprising the steps of: interfacial method for preparing polymers comprising resorcinol arylate polyester chain members substantially free of a... | 07/22/2003 |
| 6593451 | Method of processing polyacrylonitrile The present invention involves a method of processing polyacrylonitrile into a predetermined form. The first step in this method includes preparing a solution of a room temperature solvent that will dissolve polyacrylonitrile at room temperature and, a ro... | 07/15/2003 |
| 6586567 | Production process of polyphenylene ether A process for producing a polyphenylene ether, which comprises contacting, with an aqueous solution of a chelating agent, a polyphenylene ether solution and adding a water-soluble poor solvent for the polyphenylene ether to precipitate the polyphenylene e... | 07/01/2003 |
| 6472499 | Preparation of high intrinsic viscosity poly(arylene ether) resins Poly(arylene ether) resins having intrinsic viscosities greater than about 0.8 dL/g are produced in the reaction of a phenol with oxygen in the presence of an organic solvent and a metal complex catalyst, the phenol concentration being about 5 to about 15... | 10/29/2002 |
| 6458919 | Fibers made of cycloolefin copolymers The present invention relates to a fiber which comprises at least one partly crystalline cycloolefin copolymer which can be prepared by polymerization of a symmetrical polycyclic olefin, an acyclic olefin and, if desired, a monocyclic olefin in the presen... | 10/01/2002 |
| 6437084 | Method of preparing a poly (arylene ether) and a poly (arylene ether) prepared thereby A method of preparing a poly(arylene ether) includes oxidatively coupling a monohydric phenol in a reaction solution at a reaction temperature that exceeds the cloud point temperature of the reaction solution. The oxidative coupling occurs in the presence... | 08/20/2002 |
| 6392010 | Process for the solid phase synthesis of aldehyde, ketone, oxime, amine, hydroxamic acid and ଲ-unsaturated carboxylic acid and aldehyde compounds This invention is directed to a process for the solid phase synthesis of aldehyde, ketone, oxime, amine, hydroxamic acid and ,ଲ-unsaturated carboxylic acid and aldehyde compounds and to polymeric hydroxylamine resin compounds useful therefor.... | 05/21/2002 |
| 6362315 | Process to control the molecular weight and polydispersity of substituted polyphenols and polyaromatic amines by enzymatic synthesis in organic solvents, microemulsions, and biphasic systems A process of controlling the molecular weight and dispersity of poly(p-ethylphenol) and poly(m-cresol) synthesized enzymatically by varying the composition of the reaction medium. Polymers with low dispersities and molecular weights from 1000 to 3000 are ... | 03/26/2002 |
| 6362314 | Process to control the molecular weight and polydispersity of substituted polyphenols and polyaromatic amines by enzymatic synthesis in organic solvents, microemulsions, and biphasic systems A process of controlling the molecular weight and dispersity of poly(p-ethylphenol) and poly(m-cresol) synthesized enzymatically by varying the composition of the reaction medium. Polymers with low dispersities and molecular weights from 1000 to 3000 are ... | 03/26/2002 |
| 6300468 | Process for producing porous polymer globules A process for producing porous polymer beads in which polymers, preferably polyolefins or polyvinyl chloride, are dissolved in a solvent, preferably halogenated hydrocarbons or alkyl esters, at temperatures close to the boiling point of the solvent. The h... | 10/09/2001 |
