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| Number | Title | Issue Date |
| 7402650 | Process for preparing polyarylate having high thermo-resistance and high transparency A process for preparing polyarylate wherein a bivalent phenol compound having the structure of Formula 1 and an aromatic dicarboxylic acid halogen compound react to prepare a polyarylate, and wherein a nonionic surface-active agent is added. This decreases residual ... | 07/22/2008 |
| 7344657 | Aromatic liquid-crystalline polyester composition and film of the same An aromatic liquid-crystalline polyester composition is provided, which comprises at least one compound selected from an aliphatic carboxylate aryl ester and an aromatic carboxylic anhydride; an aromatic liquid-crystalline polyester; and a solvent containing at leas... | 03/18/2008 |
| 7335470 | Compilations of nucleic acids and arrays and methods of using them In one aspect the invention provides compilations of nucleic acids, articles of manufacture, e.g., arrays, and methods for the detection of chromosomal abnormalities, such as a chromosomal aneuploidies, deletions, amplifications, and the like, and the diagnosis or p... | 02/26/2008 |
| 7238842 | Covalent tethering of functional groups to proteins A mutant hydrolase optionally fused to a protein of interest is provided. The mutant hydrolase is capable of forming a bond with a substrate for the corresponding nonmutant (wild-type) hydrolase which is more stable than the bond formed between the wild-type hydrola... | 07/03/2007 |
| 7205366 | Hole transport polymers and devices made with such polymers The present invention is generally directed to a hole transport polymer comprising a polymeric backbone having linked thereto a plurality of substituents comprising fused aromatic ring groups, with the proviso that the polymer does not contain groups selected from t... | 04/17/2007 |
| 7202311 | Phosphine oxide hydroxyarl mixtures with novolac resins for co-curing epoxy resins There is disclosed a novel mixture of polyhydroxy phenolic curing agents, such as novolac resins blended with a mixture of mono, bis and tris hydroxyaryl phosphine oxides for co-curing epoxy resins and imparting flame resistance thereto. A preferred composition incl... | 04/10/2007 |
| 7201957 | Phosphine oxide hydroxyaryl mixtures with novolac resins for co-curing epoxy resins There is disclosed a novel mixture of polyhydroxy phenolic curing agents, such as novolac resins blended with a mixture of mono, bis and tris hydroxyaryl phosphine oxides for co-curing epoxy resins and imparting flame resistance thereto. A preferred composition incl... | 04/10/2007 |
| 7195849 | Photosensitive resin compositions A positive photosensitive resin composition comprising: (a) at least one polybenzoxazole precursor polymer having structure I or II; ... | 03/27/2007 |
| 7193030 | Acid anhydride and polyimide using the same An acid anhydride of the formula (4), and a polyimide using the acid anhydride, wherein anhydrides are substituted at sites 3 or sites 4, which acid anhydride is obtained... | 03/20/2007 |
| 7173102 | Facially amphiphilic polymers as anti-infective agents Facially amphiphilic polymers and articles made therefrom having biocidal surfaces are disclosed. The polymers can inhibit the growth of microorganisms in contact with the surface or in areas adjacent to said biocidal surface. There is also disclosed a method to ide... | 02/06/2007 |
| 7153928 | Method for producing polyhydroxyalkanoate crystal The present invention provides a method for easily obtaining a biodegradable polyhydroxyalkanoate by a solvent extraction method. A method for producing a polyhydroxyalkanoate crystal comprises mixing a solution of a polyhydroxyalkanoate in a good solvent with a poo... | 12/26/2006 |
| 7148313 | Polycarbonate resin composition and molded articles thereof A polycarbonate resin composition comprising 100 parts by weight of a polycarbonate resin (component A), 0.01 to 10 parts by weight of at least one ultraviolet light absorber (component B) selected from the group of a specific cyclic imino ester, and 0.01 to 1 part ... | 12/12/2006 |
| 7098298 | Method for producing polyhydroxyalkanoate crystal The present invention provides a method for conveniently obtaining a biodegradable polyhydroxyalkanoate by a solvent extraction method. A method for producing a polyhydroxyalkanoate crystal comprises precipitating a polyhydroxyalkanoate crystal using a monohydric al... | 08/29/2006 |
| 7094860 | Maleimide group-containing polymer particles and method of producing the same The present invention relates to a maleimide group-containing polymer particle containing a crosslinked polymer particle containing a group represented by the following formula (1) and to a method of producing the maleimide group-containing crosslinked polymer parti... | 08/22/2006 |
| 7070904 | Polybenzoxazoles from poly-o-hydroxyamide, novel poly-o-hydroxyamides, preparation processes therefor, and their application in microelectronics High-temperature-stable polybenzoxazoles are formed from novel poly-o-hydroxyamides. The novel poly-o-hydroxyamides have low dielectric constants, are suitable for exposure at 248 nm or shorter wavelengths, and have hydroxyl groups at least some of which have been p... | 07/04/2006 |
| 7063892 | Aromatic liquid-crystalline polyester and film thereof An aromatic liquid-crystalline polyester having a small dielectric loss in a wide frequency region is provided. An aromatic liquid-crystalline polyester is provided that can manufacture a film having a small volume expansion by heating. An aromatic liquid-crystallin... | 06/20/2006 |
| 7056641 | Photosensitive resin compositions A positive photosensitive resin composition of at least one uncapped polybenzoxazole precursor polymer, at least one capped polybenzoxazole precursor polymer, at least one photosensitive agent and at least one solvent, use of such compositions to pattern an image on... | 06/06/2006 |
| 7022772 | Optical film comprising polyarylates containing bis-(hydroxyphenyl)-fluorene-ortho-disubstituted bisphenols The present invention refers to a polymeric optical film the polymer of the polymeric optical film consisting essentially of one or more polyarylates having repeating units represented by the general structure: wherein ... | 04/04/2006 |
| 6984712 | Liquid-crystal polyester resin The present invention provides a liquid-crystalline polyester resin which comprises monomer units derived from 2-hydroxy-3-naphthoic acid and/or 2-hydroxynaphthalene-3,6-dicarboxylic acid in an amount of 1-5000 mmol % based on the total monomer components of the res... | 01/10/2006 |
| 6955851 | Hydroxyaryl phosphine oxides, glycidyl ethers and epoxy compositions, composites and laminates derived therefrom The invention provides new compositions of matter that are capable of forming cross-linked polymeric materials upon reaction with various known epoxy-containing compositions. Thus, the compositions of this invention are useful in the manufacturing of prepregs and la... | 10/18/2005 |
| 6939659 | Photosensitive resin compositions A positive photosensitive resin composition of at least one uncapped polybenzoxazole precursor polymer, at least one capped polybenzoxazole precursor polymer, at least one photosensitive agent and at least one solvent, use of such compositions to pattern an image on... | 09/06/2005 |
| 6929891 | Photosensitive resin compositions A heat resistant negative working photosensitive composition that comprises (a) one or more polybenzoxazole precursor polymers (I): wherein x is an integer from about 10 to ab... | 08/16/2005 |
| 6642349 | Batch type apparatus for production of liquid crystalline polymer, and method for continuous production of liquid crystalline polymer using the apparatus A batch type apparatus for producing a liquid crystalline polymer includes a reactor, a first gas-pressurizing unit, a die-head, a shut-off valve, and a die-plate. The reactor produces a liquid crystalline polymer capable of forming an anisotropic melt ph... | 11/04/2003 |
| 6632886 | Optical film comprising polyarylates containing bis-(hydroxyphenyl)-fluorene-ortho-disubstituted bisphenols The present invention refers to an optical film comprising one or more polyarylates having at least some units represented by the general structure: ##STR1## wherein A represents one or more different bisphenolfluorene radicals having the general... | 10/14/2003 |
| 6610813 | Highly-halogenated low optical loss polymer A polyester having less than 50 hydrogen-carbon bonds per 1000 molecular weight units exhibits very low optical loss in the range of wavelengths commonly used for optical communication, and exhibits other physical properties suitable for use as a waveguid... | 08/26/2003 |
| 6420511 | Process for the preparation of aromatic polyesters This invention relates to a process for the preparation of aromatic polyesters which comprises polymerization of a aromatic dicarboxylic acid substituted with a polar group weight percentage in the range of 20 to 75 with a substituted aromatic diol weight... | 07/16/2002 |
| 6388045 | Liquid-crystalline polymer Provided is a liquid crystalline polymer which is obtained by copolymerizing at least one polyfunctional aromatic monomer selected from the group consisting of the compounds represented by the formulae (I), (II) and (III) below with at least one polymeriz... | 05/14/2002 |
| 6383636 | (2,5-disubstituted-1,4-phenylene oxide) block or graft copolymer There is disclosed a (2,5-disubstituted-1,4-phenylene oxide) block copolymer which comprises one or more block structural units represented by formula (I) and at least one particular divalent structural unit in a molecule. There is also disclosed a (2,5-d... | 05/07/2002 |
| 6355765 | Wholly aromatic thermotropic copolyesters with controlled flexibility A wholly aromatic copolyester having repeating units of the formula: ##STR1## wherein Ar1 is ##STR2## wherein Q is selected from the group consisting of --H, --CH3, --CF3, --Cl, --Br, and --C6 H5 ; wh... | 03/12/2002 |
| 6333821 | Optical elements The invention relates to optical elements comprised of an optical isotropic completely aromatic polyester with a glass transition temperature Tgࣙ180° C.... | 12/25/2001 |
| 6307002 | Polyimide composition and process for producing the same A polyimide represented by the following general formula (1); ##STR1## wherein l, m, and n represent not the order of each repeating unit, but the numbers of each repeating unit existing in the molecule, E1 is a photosensitive group, E2 | 10/23/2001 |
| 6255405 | Light-absorbing polymers and application thereof to anti-reflection film A high-performance anti-reflective coating which highly absorbs a given light, e.g., deep ultraviolet rays, tenaciously adheres to substrates upon coating formation, is satisfactory in covering, and eliminates the influence of standing waves in the produc... | 07/03/2001 |
| 6203922 | High glass transition temperature, ductile, and processable thermoplastic containing conformable ring segments The present invention pertains to novel synthetic polymers which contain bulky carboxylic monomer units which contain minimally two aryl rings linked by one or more linking groups such that rotation of the aryl rings relative to each other is structurally... | 03/20/2001 |
| 6183848 | Low melt viscosity amorphous copolyesters with enhanced glass transition temperatures having improved gas barrier properties An amorphous copolyester having a maximum melt viscosity at 1 radian/second and at about 260 to about 290° C. of about 12000 poise, a glass transition temperature ranging from about 88° C. to about 120° C., and an inherent viscosity of at least about 0... | 02/06/2001 |
| 6057417 | High temperature polymers with low dielectric properties A polymer system having repeating units of the formula: ##STR1## wherein A is --H or --OH, x has a value of 0.5 to 1.0 and y has a value of 1.0-x, exhibits a high glass transition temperature (Tg) and a low dielectric constant. The polymer... | 05/02/2000 |
| 6020119 | Process for halomethylation of high performance polymers Disclosed is a process which comprises reacting a polymer of the general formula ##STR1## or ##STR2## wherein x is an integer of 0 or 1, A is one of several specified groups, such as ##STR3## B is one of several specified groups, ... | 02/01/2000 |
| 5990261 | Organic optical component A low birefringent organic optical component prepared from a resin consisting essentially of one or more repetitive structural units selected from the group consisting of structures represented by general formula (1); ##STR1## wherein A is eithe... | 11/23/1999 |
| 5989758 | Liquid crystalline polyesters, their composition, and their uses There are provided liquid crystalline polyesters comprising 4'-hydroxy-4-stilbenecarboxylic acid type units, dicarboxylic acid units acting as a mesogen such as 4,4'-stilbenecarboxylic acid and catechol units as essential ingredients, and a liquid crystal... | 11/23/1999 |
| 5925475 | Phthalonitrile thermoset polymers and composites cured with halogen-containing aromatic amine curing agents Phthalonitrile thermoset polymers and composites having flame resistance formed by combining a phthalonitrile monomer in the melt stage with a halogen-containing aromatic amine curing agent. The halogen-containing aromatic amine curing agent is selected... | 07/20/1999 |
| 5922825 | Preparation of poly-o-hydroxyamides and poly o-mercaptoamides In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid derivative with the following structure: ##STR1## where D=O, S, or NH, and where R*... | 07/13/1999 |
