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| Number | Title | Issue Date |
| 7902316 | Polyethersulfone composition, method of making and articles therefrom A polyethersulfone composition is disclosed which comprises structural units derived from bisphenol-A and 4,4′-biphenol, the structural units derived from 4,4′-biphenol being present in an amount corresponding to greater than 65 mole percent based on total moles... | 03/08/2011 |
| 7393914 | Polyethersulfone compositions Novel polyethersulfone compositions have been discovered which incorporate structural subunits derived from sulfonated bis(halophenyl)sulfones, dihydroxy terphenyls, and/or bis(hydroxyphenyl)pyridines. The sulfonated polyethersulfones show promise as materials for u... | 07/01/2008 |
| 7307138 | Polymer electrolytes and process for their preparation A sulfonated aromatic polyether ketone of the formula (II) [Ar—O—Ar′—CO—Ar′—O—Ar—CO—Ar″—CO—] (II) in which from 1% to 100% of the O-phenylene-CO units are substituted with an SO3M group and sulfonated an... | 12/11/2007 |
| 7273919 | High heat polyethersulfone compositions High heat polyethersulfone compositions are provided which possess unexpectedly high glass transition temperatures. The polyethersulfone compositions comprise structural units derived from phthalimide bisphenols such as 3,3-bis(4 -hydroxyphenyl)-N-phenylphthalimide,... | 09/25/2007 |
| 7186454 | Dielectric films and materials therefor A material for dielectric films is a polymerizable composition containing an organic solvent, and an adamantanepolycarboxylic acid derivative represented by following Formula (1): wherein X is hydrogen atom, a hy... | 03/06/2007 |
| 7163987 | Thermoplastic molding compositions with an improved melt stability based on polyarlene ether sulfones The present invention relates to molding compositions comprising A) from 39 to 99% by weight of at least one polyarylene ether sulfone built up from bifunctional monomer units, B) from 1 to 20% by weight of at leas... | 01/16/2007 |
| 7115699 | Sulfonated polymer having nitrile-containing hydrophobic block and solid polymer electrolyte Provided are a sulfonated polymer capable of high hot water resistance even if it has an increased amount of the sulfonic groups introduced therein, and a solid polymer electrolyte containing the sulfonated polymer that has high proton conductivity and excellent gen... | 10/03/2006 |
| 7034187 | Poly(aralkyl ketone)s and methods of preparing the same Disclosed are processes for preparing modifiable poly(aralkyl ketone)s having active methylene group(s) in the main chain comprising reacting an aralkanoic acid or mixtures thereof in the presence of one alkane or aryl sulfonic acid and a condensing agent. Also disc... | 04/25/2006 |
| 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 |
| 6984713 | Sulfonated polyetherketoneketone The invention relates to a sulfonated polyetherketonketone (sPEKK), which is amorphous and/or which can be obtained by sulfonating amorphous PEKK. This sPEKK can be preferably produced by using a diphenyl ether and a benzenedicarboxylic acid derivate. Particularly p... | 01/10/2006 |
| 6861497 | Polyimides having an unusually low and tunable electrical resistivity useful for electrical and optical applications A polyimide is disclosed of the formula: CG1 and CG2 are independently electron-accepting and/or electron-donating groups; x is an integer from about 3 to about 3000; ODAH is any of a number of... | 03/01/2005 |
| 6743889 | Hyperbranched ether-ketone co-polymers Novel ether-ketone hyperbranched co-polymers are prepared by co-polymerizing 3,5-bis(4-fluorobenzoyl)phenol and 4-fluoro-4′-hydroxybenzophenone. The resulting copolymer has repeating units of the formula: wherein n has... | 06/01/2004 |
| 6593445 | Low color poly(biphenyl ether sulfone) and improved process for the preparation thereof Improved carbonate method for producing poly(biphenyl ether sulfones) having a low color, the improvement being the use of small particle size anhydrous potassium carbonate. The resulting poly(biphenyl ether sulfones) are significantly improved in color.... | 07/15/2003 |
| 6562935 | Thermoplastic aromatic polysulfone resin composition A thermoplastic aromatic polysulfone resin which is advantageous as a material for use in coating, adhesion, composite material or the like and which has a reduced viscosity (RV) of 0.36 to 0.45 dl/g and a sum total A of the number of phenolic hydroxyl gr... | 05/13/2003 |
| 6355764 | Soluble thermosetting polyethersulfone and making of them The invention provides a new soluble thermosetting polyethersulfone resin, which can dissolve in ether solvent such as THF and 1,4-Dioxane. The soluble thermosetting polyethersulfone resin can be introduced the unsaturated olefin functional group, after h... | 03/12/2002 |
| 6350845 | Polyimide compositions and novel acid dianhydrides to be used therein Novel polyimides substituted by a substituent having an alkyl or fluoroalkyl group and having reduced water absorption; a process for producing these novel polyimides; and novel acid dianhydrides to be used in the production thereof. A polyimide containin... | 02/26/2002 |
| 6350844 | Polyimide film and electric/electronic equipment bases with the use thereof A polyimide film having sufficiently excellent characteristics such as a sufficiently high elastic modulus, a low water absorption, a small coefficient of moisture-absorption expansion, a small coefficient of linear expansion and a high dimensional stabil... | 02/26/2002 |
| 6335418 | Functional polyamic acid microfine particles, functional polyimide microfine particles, and processes for their production A primary object of the invention is to provide a production technology for functional polyamic acid microfine particles and functional polyimide microfine particles by which the particle shape, size and size distribution can be freely controlled. The inv... | 01/01/2002 |
| 6329493 | Plumbing articles from poly(aryl ether sulfones) Plumbing articles made from a thermoplastic resin comprising a poly(biphenyl ether sulfone) and a poly(aryl ether sulfone) comprising bisphenol A residues.... | 12/11/2001 |
| 6303743 | Polyimide for optical communications, method of preparing the same, and method of forming multiple polyimide film using the polyimide A polyimide for optical communications, which is expressed by the formula (1), a method of preparing the same, and a method of forming multiple polyimide films using the polyimide, wherein the formula (1) is given by ##STR1## X1, X2,... | 10/16/2001 |
| 6277950 | Organic-soluble aromatic polyimides, organic solutions and preparation thereof The present invention provides polyimides and co-polyimides that are organosoluble. The polyimides and co-polyimides are prepared from an aromatic diamine having ortho-linked phenylene and pendant tert-butyl group, i.e., 1,2-bis(4-aminophenoxy)-4-tert-but... | 08/21/2001 |
| 6277495 | Polyimide film, a method for its manufacture and a polyimide film containing metal laminated plate A polyimide film of birefringence less than 0.01 is formed by drawing a copolymerized polyimide comprising a block component and a random component which are molecularly bonded, wherein the block component of copolymerized polyimide comprises an aromatic ... | 08/21/2001 |
| 6265521 | Method for preparing polyether polymers of predetermined molecular Polyether polymers such as polyetherimides are prepared by a two-step reaction. The first step is the reaction between an alkali metal salt of a dihydroxy-substituted aromatic hydrocarbon, such as bisphenol A disodium salt, and a substituted aromatic comp... | 07/24/2001 |
| 6252033 | Method for the preparation of polyamic acid and polymide useful for adhesives A method for preparing polyamic acid and polyimide, which is suitable for use in adhesives or adhesive tapes for electronic parts. The polymers have such three-dimensional molecular structures that a significant improvement can be brought about in solvent... | 06/26/2001 |
| 6214488 | Polymer electrolyte membrane and process for the production thereof In order to produce a polymer electrolyte membrane from sulfonated, aromatic polyether ketone, an aromatic polyether ketone of the formula (I) ##STR1## in which Ar is a phenylene ring having p- and/or m-bonds, Ar' is a phenylene, naphthylene, biphenylene, anth... | 04/10/2001 |
| 6203143 | Hydroxyalkylated high performance curable polymers Disclosed is a composition which comprises (a) a polymer containing at least some monomer repeat units with photosensitivity-imparting substituents which enable crosslinking or chain extension of the polymer upon exposure to actinic radiation, said polyme... | 03/20/2001 |
| 6084053 | Electronic part and process for manufacturing the same Electronic parts and a process for manufacturing the electronic parts are provided. The electronic parts comprise an electric insulating material exhibiting a high heat resistance and low dielectric constant as a structural component. The electric insulat... | 07/04/2000 |
| 6069278 | Aromatic diamines and polyimides based on 4,4'-bis-(4-aminophenoxy)-2,2' or 2,2',6,6'-substituted biphenyl This invention relates the novel diamines, the polyimide oligomers and the polyimides derived therefrom and to the method of preparing the diamines, oligomers and the polyimides. The thermoplastic polyimides derived from the aromatic diamines of this inve... | 05/30/2000 |
| 6054554 | Soluble polyimide resin comprising polyalicyclic structure The invention herein relates to a novel soluble polyimide resin comprising polyalicyclic structures and the process of preparation of the same, wherein aromatic tetracarboxylic dianhydride and novel aromatic diamine having an polyalicyclic group with vari... | 04/25/2000 |
| 6037499 | Aromatic diamines and polyimides based on 4,4'-bis-(4-aminophenoxy)-2,2' or 2,2',6,6'-substituted biphenyl This invention relates the novel diamines, the polyimide oligomers and the polyimides derived therefrom and to the method of preparing the diamines, oligomers and the polyimides. The thermoplastic polyimides derived from the aromatic diamines of this inve... | 03/14/2000 |
| 6031068 | Polyimide composition and base tape for TAB carrier tape and flexible printed circuit board made from said composition The object of the present invention is to provide polyimide composition having such excellent property as low water absorption and low hygroscopic swelling, and a base tape for a TAB carrier tape and a FPC. The another object of the present invention is to pro... | 02/29/2000 |
| 6031067 | Soluble polyimide resin and process of preparation of the same The invention herein relates to a soluble polyimide resin and the process of preparation of the same, wherein aromatic tetracarboxylic dianhydride and aromatic diamine having an alicyclic group with various structures of substituted alkyl groups are used ... | 02/29/2000 |
| 6025457 | Molten-salt type polyelectrolyte Novel molten-salt type polyelectrolytes are disclosed which contain as an essential ingredient a molten salt polymer obtained by reacting an imidazolium derivative, such as a 1,3-dialkylimidazolium halide, 1,2,3-trialkylimidazolium halide, 1-vinyl-3-alkyl... | 02/15/2000 |
| 6013760 | Soluble polyimide resin for liquid crystal alignment layer and process of preparation of the same The invention herein relates to a soluble polyimide resin for a liquid crystal alignment layer and the process of preparation of the same, wherein aliphatic tetracarboxylic dianhydride and aromatic diamine having the amide group are used to yield a novel ... | 01/11/2000 |
| 5969087 | Polyimide, a method for manufacturing the same, a gas separation membrane using the polyimide and a method for manufacturing the same A novel polyimide having a repeating structure unit expressed by the following general formula (1), a method for manufacturing the same, a gas separation membrane using the novel polyimide and the method for manufacturing the same. The gas separation memb... | 10/19/1999 |
| 5939521 | Polyimides based on 4,4'-bis (4-aminophenoxy)-2,2'or 2,2', 6,6'-substituted biphenyl This invention relates the novel diamines, the polyimide oligomers and the polyimides derived therefrom and to the method of preparing the diamines, oligomers and the polyimides. The thermoplastic polyimides derived from the aromatic diamines of this inve... | 08/17/1999 |
| 5908915 | Copolyetherimides and phase catalyzed method for their preparation Copolyetherimides are prepared by the reaction of an alkali metal salt of a dihydroxyaromatic compound with a bis(substituted phthalimide) and a third compound which may be a substituted aromatic ketone or sulfone or a macrocyclic polycarbonate or polyary... | 06/01/1999 |
| 5879821 | Electroluminescent polymer compositions and processes thereof A charge transport polymer including repeat units selected from mers of the formulas ##STR1## and copolymers, and mixtures thereof.... | 03/09/1999 |
| 5830974 | Method for preparing aromatic polyether polymers Aromatic polyether polymers, illustrated by polyethersulfones, polyetherketones and polyetherimides, are prepared by a phase transfer catalyzed reaction between a salt of at least one dihydroxyaromatic compound and at least one substituted aromatic compou... | 11/03/1998 |
| 5759449 | Film of aromatic polyethersulfone, process for the production thereof, and solution composition for the production thereof An optically isotropic film of an aromatic polyethersulfone, which is useful as a substrate for a liquid crystal display device, and an optically anisotropic, uniaxially oriented film of an aromatic polyethersulfone, which is useful as a phase difference ... | 06/02/1998 |
