Abstract: A polyimide resin is provided. The polyimide resin comprises the reaction product of a polyimide resin and an amine comprising a C1-10 hydrocarbon substituted with CN, F, SO2, SO, S, SO3, SO3?, PO, PO2H, PO3H, PO2?, PO3?2, CO, CO2?, CO2H, CONH, CONH2, NHCOHN, OCONH, OCO2, N, NH, NH2, NO2, CSNH, CSNH2, NHCSNH, OTi(OR4)3, or OSi(OR4)3 or combinations of these, wherein R4 is a C1-10 aliphatic or aromatic hydrocarbon. The resin may be used to provide a thin film that in turn, may advantageously be used to form, wholly or in part, articles such as capacitors, sensors, batteries, flexible printed circuit boards, keyboard membranes, motor/transformer insulations, cable wrappings, industrial tapes, interior coverage materials, and the like. In particular, a capacitor comprising the thin film and methods of making the same are also provided.

Abstract: The present invention relates to an aqueous alkali-developable photosensitive polyimide precursor resin composition that is appropriate for highly heat-resistant transparent protection layers and insulation layers for liquid crystal display devices. In more detail, the present invention relates to a negative-type photosensitive transparent polyimide precursor resin composition manufactured in two steps.

Abstract: A proton-conducting polymer composition which contains an aromatic hydrocarbon type of proton-conducting polymer in an amount of 1 to 30 mass %, wherein a component of said proton-conducting polymer having a molecular weight in the range of 2,000 to 230,000 in terms of polyethylene glycol accounts for 10 mass % or more of the total amount of said proton-conducting polymer; a method for preparing the proton-conducting polymer composition, a catalyst ink comprising the proton-conducting polymer composition and a fuel cell including the catalyst ink. The above proton-conducting polymer composition can well exploit the performance capability of a catalyst of a fuel cell, especially when it is allowed to be present with the electrode of a fuel cell.

Abstract: Disclosed is a liquid crystal alignment agent including a polymer including polyamic acid including a repeating unit represented by Chemical Formula 1, polyimide including a repeating unit represented by Chemical Formula 2, or a combination thereof.

Abstract: The present invention discloses a method of producing a modified polyimide comprising a polycarbonate, which modified polyimide has excellent electric properties and adhesion as well as excellent heat resistance, flexibility, bending property, low warping, chemical resistance and storage stability; and the modified polyimide. Also disclosed are a composition comprising the modified polyimide and used thereof.

Abstract: The present invention provides a color conversion film which can maintain sufficient conversion light intensity without increasing the thickness thereof, and a multicolor light-emitting organic EL device which uses such a film. The color conversion film of the invention includes a polymeric dye material composed of a first dye unit and a second dye unit. The first dye unit absorbs light incident on the color conversion film and transfers the energy of the absorbed incident light to the second dye unit. The second dye unit receives the energy from the first dye unit and emits light.

Abstract: A polyamide having at least an alicyclic or aromatic group exhibiting a light transmittance of 80% or more in the wavelength region of 450 to 700 nm is produced by using an aramide polymer comprising specific structural units at an amount of 50 mol % or more. Colorless transparent alicyclic or aromatic polyamide films having high rigidity and high thermal resistance are provided by using the polyamide. Further, the invention provides various optical members made by using the polyamide or the polyamide films, and polyamide copolymers.

Abstract: One embodiment of this invention is directed to an electronic article, formed in part from a polyetherimide resin having a repeating unit of formula I: Another embodiment describes a capacitor which includes a dielectric film formed from such a polyetherimide resin. The capacitor further includes at least one electrode attached to a first surface of the dielectric film.

Abstract: A polyetherimide resin is described herein. The resin includes a structure of repeating units of the formula (I) wherein each aromatic ring in the structure can be substituted with at least one halogen atom, nitro group, cyano group, alkyl group, cycloalkyl group, or aryl group. Another embodiment relates to a method for preparing a polyetherimide polymer. The method includes the step of reacting metaphenylenediamine bis(4-nitrophthalimide) with a bisphenolic mixture of a salt of bisphenol A and a salt of an arylcyano-modified bisphenol.

Abstract: Polyacetylinic oligomers suitable for high-temperature polymer-matrix composites are provided. The polyacetylinic oligomers have the formula: D-A-D wherein D is an endcap including at least one crosslinking functionality; and A is backbone selected from the group consisting of imidesulfone; ether; ethersulfone; amide; imide; ester; estersulfone; etherimide; amideimide; oxazole; oxazole sulfone; thiazole; thiazole sulfone; imidazole; and imidazole sulfone. At least one ethynyl functional group, however, is incorporated into the backbone such that crosslinking is not only realized at the endcaps but also at the ethynyl groups within the backbone of the oligomer itself.

Abstract: A method for purifying a polymer comprising providing a first mixture comprising at least one solvent and at least one polymeric material, diluting the first mixture with veratrole to produce a second mixture in which the polymeric material is substantially dissolved at a temperature less than 100° C., performing at least one step selected from (i) contacting the second mixture with an aqueous wash solution, and (ii) filtering the second mixture.

Abstract: An oligomer having di-phenylethynyl endcaps is disclosed. The capped oligomer has the formula: D-A-D wherein D is a di-phenylethynyl endcap; and A is an oligomer selected from the group consisting of imidesulfone; ether; ethersulfone; amide; imide; ester; estersulfone; etherimide; amideimide; oxazole; oxazole sulfone; thiazole; thiazole sulfone; imidazole; and imidazole sulfone.

Abstract: The invention provides hyper-branched polymer manufactured by adding a bismaleimide and a barbituric acid into a Brönsted base solution and reacting the mixture at 20 to 100° C. The formation may further include maleimide monomer and/or multi-maleimide monomer to modify the hyper-branched polymer properties. In addition, the barbituric acid is added to the reaction in a batch not initially charged with other reactants in a one-pot.

Abstract: A polyetherimide having an OH content that is greater than 0 and equal or less than 100 ppm; a Relative Thermal Index that is greater than or equal to 170° C.; and a chlorine content that is greater than 0 ppm is disclosed herein. A method for preparing the polyetherimide is also disclosed.

Abstract: A proton conductive membrane capable of sufficient proton conductivity even at low humidities and low temperatures is provided. The proton conductive membrane includes a copolymer including an ion conductive polymer segment (A) and an ion nonconductive polymer segment (B) , the membrane absorbing water when it is soaked in 90° C. water for 30 minutes of which the quantity of water showing freezing temperatures in the range of ?30 to 0° C. is 0.01 to 3.0 g based on 1 g of the copolymer. The copolymer has a structure in which main chain skeletons of the copolymer are covalently bound at aromatic rings thereof through binding groups.

Abstract: Tailorable polyimide resin systems suitable for processing by resin transfer molding (RTM) and resin infusion (RI) methods. An exemplary resin system includes first and second prepolymer components present in respective amounts to provide the desired processibility. The cured polyimide system exhibits high glass transition temperature and other properties required for gas turbine engine applications. The first and second prepolymer components independently comprise a monomeric mixture or a reaction product of a diamine component, a dianhydride component, and an end group component.

Abstract: A method for forming a polyimide composite article utilizes a polyimide resin system including at least a first prepolymer component and a second prepolymer component. A preform structure is tackified with the first prepolymer component. Using resin infusion or resin transfer molding techniques, the tackified preform structure is contacted with the second prepolymer component. The polyimide resin system is cured under suitable cure conditions so that the first and second prepolymer components mix and react to produce the polyimide composite structure.

Abstract: A thermosetting resin including at least one repeating unit represented by the following Chemical Formula 1: wherein, in Chemical Formula 1, A is derived from a phenolic moiety, an anilinic moiety, or a combination thereof, L is C(O)O, C(O)NR? wherein R? is hydrogen, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C6 to C30 aryloxy group, an aromatic ester, an aromatic ester-imide, an aromatic ester-amide, an aromatic amide, or a combination thereof, Z is a substituted or unsubstituted aliphatic group including a double bond or a triple bond, a substituted or unsubstituted alicyclic group including a double bond or a triple bond, a substituted or unsubstituted aryl group including a double bond or a triple bond, (iso)cyanate, a derivative thereof, or a combination thereof, and n is an integer ranging from 1 to about 4.

Abstract: Polycarbonate compositions are disclosed. The compositions comprise a polycarbonate polymer (A) having repeating units derived from 2-phenyl-3,3-bis(4-hydroxyphenyl)phthalimidine (PPPBP); a polycarbonate polymer (B) which is different from polymer (A); and an impact modifier (C) which is different from polymer (A) and polymer (B). The resulting composition has an improved combination of properties, particularly heat resistance, low temperature impact performance, and viscosity. Also disclosed are articles formed from such compositions.

Abstract: Polycarbonate compositions are disclosed. The compositions comprise a polycarbonate polymer (A) having repeating units derived from at least three different monomers, one monomer being 2-phenyl-3,3-bis(4-hydroxyphenyl)phthalimidine (PPPBP); and the other two monomers having the formula: wherein each Rk is independently a halogen atom, a C1-10 hydrocarbon group, or a C1-10 halogen substituted hydrocarbon group, and n is 0 to 4; and an impact modifier (B). The resulting composition has improved heat resistance and chemical resistance, particularly to Fuel C.

Abstract: The present invention relates to a negative photosensitive polyimide polymer having a repeating unit of formula (1) as a polymerized unit: wherein G, Q and P* are as defined in the specification. The polyimide polymer of the present invention is developable in an aqueous alkaline solution, and has the properties associated with an insulating layer and photoresist.

Abstract: The present invention provides a method for preparing relatively insoluble bisimides under conditions which afford high imidization reaction rates and which permit the monitoring and adjustment of reactant stoichiometry at any stage of the reaction. The bisimides provided by the present invention are prepared either by reaction of a diamine such as 4,4?-diaminodiphenylsulfone (DDS) with an anhydride, for example 3-chlorophthalic anhydride (3-ClPA) in the presence of a solvent at a pressure greater than one atmosphere and at a temperature above the normal boiling point of the solvent, or by reaction of a monoamine with a dianhydride under the same conditions. In one embodiment, the relatively insoluble product bisimides provided by the present invention have a solubility in ortho-dichlorobenzene of less than about 10 percent by weight at a temperature of about 180° C.

Abstract: The present invention relates to reinforced articles based on a polyamide matrix of high melt flow index and on long fibers. The articles according to the invention exhibit good mechanical properties, such as good tensile strength, good surface finish and good moldability.

Abstract: Disclosed are enamel varnish compositions for an enamel wire and an enamel wire using the same. The present invention relates to enamel varnish compositions for an enamel wire in which a polymeric resin component is included in an organic solvent, wherein the polymeric resin component includes a first polyamideimide resin, presented in the Chemistry FIG. 1; and a second resin having polyamideimide in which a triazine ring is introduced into a major chain. The enamel wire, in which such a coating pigment composition is applied to the innermost insulated coating layer contacted with the conducting wire, shows the increased adhesivity of the insulated coating layer to the conducting wire without forming an additional bonding layer, as well as the excellent physical properties such as the wear resistance and flexibility, etc.

Abstract: The present invention relates to polycarbonates comprising imide-containing aryl mono- or dihydroxy compounds as chain terminators and, respectively, monomer units, and also to compositions comprising the said polycarbonates, to their use for the production of mouldings, and to mouldings obtainable therefrom.

Abstract: Polymers for extreme ultraviolet and 193 nm photoresists are disclosed. The polymers comprise a photoacid generator (PAG) residue, an acid cleavable residue and a diacid joined by ester linkages. The polymers include a photoacid generating diol, a diacid and an acid table diol.

Abstract: Polymers for photoresists and monomers for incorporation into those polymers are disclosed. The polymers comprise a photoacid generator (PAG) component and at least a second component that is photolytically stable and acid-stable. The polymers may also contain a third, acid-labile component. The photoacid generator is based on N-sulfoxyimides and related moieties that contain photolabile oxygen-heteroatom and oxygen-aromatic carbon bonds.

Abstract: The disclosure relates to biocompatible components useful for forming compositions for use as medical/surgical synthetic adhesives and sealants. Biocompatible components of the present disclosure may include a multifunctional amine or multifunctional polyol core, with isocyanate and/or polyalkylene oxide arms, which may optionally be capped with electrophilic or nucleophilic groups. These biocompatible components may, in embodiments, be combined with optional cross linkers to form adhesive and/or sealant compositions.

Abstract: According to an aspect of the invention, medical devices are provided which include (a) a substrate and (b) a coating that includes an antifouling copolymer, an adhesive copolymer, or both. Antifouling copolymers for use in conjunction with the present invention contain (i) at least one antifouling polymer block having multiple pendant alkoxy functional groups along the polymer backbone and (ii) at least one additional polymer block. Adhesive copolymers for use in conjunction with the present invention contain (i) at least one adhesive polymer block having multiple pendant ring-hydroxyl-substituted aromatic groups along the polymer backbone and (ii) at least one additional polymer block.

Abstract: There is provided a simple production method of polyhydroxyimide and a positive photosensitive resin composition containing the polyhydroxyimide. A production method of a polyhydroxyimide comprising: adding an acid component that is at least one type of carboxylic acid having a pKa of 0 to 5 to a polyhydroxyimide precursor of Formula (1): (where X is a tetravalent aliphatic or aromatic group, Y is an organic group containing an aromatic group substituted with at least one OH group, and n is an integer of 1 or more); and heating the resultant mixture to a temperature of 50 to 100° C. to prepare a polyimide of Formula (2): (where X, Y and n are the same as those defined above) having a weight average molecular weight of 3,000 to 100,000.

Abstract: An imide-naphthoxazine copolymer comprising a repeating unit represented by General Formula (1) below: (wherein X and Y independently represent a single bond, an oxygen atom, a carbonyl group, or an organic group which may be substituted by a heteroatom; R represents CH3 or H, n represents an integer from 1 to 10; and m represents an integer from 1 to 20).

Abstract: A process for synthesizing formulations for polyimides suitable for use in high-temperature composites in which all reactions other than chain-extension have already taken place prior to making a composite is described, wherein the resulting oligomers comprise a backbone and at least one difunctional endcap. The resulting resin systems have only the single step of endcap-to-endcap reactions during composite processing. Prior to the initiation temperature of these endcap-to-endcap reactions, the resins are stable affording the composite manufacturer a very large processing window.

Abstract: Sulfonated polymers are made by the direct polymerization of a sulfonated monomer to form the sulfonated polymers. The types of sulfonated polymers may include polysulfones or polyimides. The sulfonated polymers can be formed into membranes that may be used in proton exchange membrane fuel cells or as ion exchange membranes. The membranes formed from the sulfonated polymers exhibit improved properties over that of Nafion®. A heteropoly acid may be added to the sulfonated polymer to form a nanocomposite membrane in which the heteropoly acid is highly dispersed. The addition of a heteropoly acid to the sulfonated polymer increases the thermal stability of the membrane, enhances the conductivity above 100° C., and reduces the water uptake of the membrane.

Abstract: The present disclosure provides novel methods of producing a composition, such as, but not limited to, a polyimide composition. The methods in their most general form comprise providing a workpiece, suspending the workpiece and subjecting the suspended workpiece to processing such that the workpiece undergoes a transformation from a first state to a second state. By maintaining the workpiece in a suspended state during processing, processing-related defects are reduced or eliminated. Using such methods, the present disclosure provides compositions that are have no or reduced processing-related defects. In addition, the compositions are more consistent in chemical and physical properties and are cheaper and more economical to produce (since less product is rejected as unsuitable).

Abstract: An oligomer having di-phenylethynyl endcaps is disclosed. The capped oligomer has the formula: D-A-D wherein D is a di-phenylethynyl endcap; and A is an oligomer selected from the group consisting of imidesulfone; ether; ethersulfone; amide; imide; ester; estersulfone; etherimide; amideimide; oxazole; oxazole sulfone; thiazole; thiazole sulfone; imidazole; and imidazole sulfone.

Abstract: A method for carrying out a chemical reaction between at least two reactants occupying separate phases within a multiphase reaction mixture has been discovered in which at least one phosphazenium salt is employed as a phase transfer catalyst. The remarkable utility of phosphazenium salts as phase transfer catalysts is illustrated by the preparation of aromatic ethers. The phosphazenium salt phase transfer catalysts are shown to be especially useful in the preparation of aromatic polyethers such as polyether sulfones.

Abstract: A process for producing a filmy graphite includes the steps of forming a polyimide film having a birefringence of 0.12 or more and heat-treating the polyimide film at 2,400° C. or higher.

Abstract: Polycarbonate compositions are disclosed. The compositions comprise a polycarbonate polymer (A) having repeating units derived from at least three different monomers, one monomer being 2-phenyl-3,3-bis(4-hydroxyphenyl)phthalimidine (PPPBP); and the other two monomers having the formula: wherein each Rk is independently a halogen atom, a C1-10 hydrocarbon group, or a C1-10 halogen substituted hydrocarbon group, and n is 0 to 4; and an impact modifier (B). The resulting composition has improved heat resistance and chemical resistance, particularly to Fuel C.

Abstract: A hyper-branched polymer having a degree of branching in the range of about 0.05 to about 1 includes a dendritic unit, a linear unit, and a terminal unit, wherein the hyper-branched polymer, an electrode for a fuel cell including the hyper-branched polymer, an electrolyte membrane for a fuel cell including the hyper-branched polymer, and a fuel cell including at least one of the electrode and the electrolyte membrane. Such a hyper-branched polymer included in a fuel cell provides excellent thermal resistance and phosphoric acid resistance and increase the performance of the fuel cell.

Abstract: Disclosed is an aromatic polyimide having extremely high stiffness and extremely high gas barrier property, which is prepared from a tetracarboxylic acid component consisting essentially of 25 mol % to 97 mol % of 3,3?,4,4?-biphenyltetracarboxylic acid and 75 mol % to 3 mol % of 4,4?-oxydiphthalic acid based on 100 mol % of the total amount of the tetracarboxylic acid component, and a diamine component consisting essentially of p-phenylenediamine.

Abstract: The present invention relates generally to mercaptofunctional high ?? EO chromophores and EO polymers, and particularly to mercaptofunctional high ?? EO chromophores and EO polymers useful for making electro-optical devices and systems. Mercaptofunctional high ?? EO chromophores are covalently bonded to poly(imido sulfide) polymers producing high Tg, low optical loss, covalently bonded, high ?? EO chromophore containing polymers. Methods of synthesizing these EO materials using mild polymerization conditions are also described.

Abstract: Polyether polymers, such as polyetherimides, are prepared by the reaction of a dihydroxy-substituted aromatic hydrocarbon alkali metal salt, such as bisphenol A disodium salt, with a bis(N-(chlorophthalimido))aromatic compound, such as 1,3- and/or 1,4-bis(N-(4-chlorophthalimido))benzene, in a solvent such as o-dichlorobenzene and in the presence of a phase transfer catalyst such as a hexaalkylguanidinium chloride. Several embodiments may be employed to improve the method. They comprise employing substantially dry reagents, employing a high solids level in solvent, beginning with an excess of bis(N-(chlorophthalimido))-aromatic compound and incrementally adding alkali metal salt, employing alkali metal salt of small particle size, and using reagents of high purity.

Abstract: The present invention is directed to a non-gelled, curable composition including at least one compound having a plurality of imide functional groups. The compound in particular contains a reaction product of a) at least one hydroxyalkylamino functional succinimide; b) at least one polyisocyanate; and optionally c) at least one capping agent. The composition is suitable for use in coatings and castings.

Abstract: This invention relates to a novel polyimide silicone having an alcoholic hydroxyl group and a process for the preparation thereof. The polyimide of the invention having a primary alcoholic hydroxyl group is represented by the following general formula (1), wherein X represents a tetravalent organic group, Y represents a divalent group having at least one monovalent group selected from the group consisting of a phenolic hydroxyl group and a carboxyl group, with at least one being a divalent organic group having an alcoholic hydroxyl group, Z represents a divalent organic group, W represents a divalent organic group having an organosiloxane structure, k is a positive number, and each of m and n is equal to 0 (zero) or a positive number, with 0.1?k/(k+m+n)?1, 0?m/(k+m+n)?0.8, 0?n/(k+m+n)?0.8.

Abstract: New polyaspartimide compositions and methods of forming and using those compositions arc provided. The compositions are formed by reacting a bismaleimide and diamine in a solvent-free environment. The resulting polyaspartimide comprising recurring monomers of The compositions have properties desirable for use as shape memory polymers as well as in composite products that are useful for building components present in airplanes.

Abstract: Various embodiments of polymer fibers comprising a high heat polymer and process for making the polymer fibers are provided. In one embodiment, synthetic polymer fibers comprise polyetherimide polymer that is substantially free of foreign particulate matter greater than about 100 microns in size. A process for producing polymer fiber includes melting polymer comprising polyetherimide to a melt temperature that ranges from about 180-500° C. to form a molten polymer; passing the polyetherimide that is substantially free of foreign particulate matter above about 100 microns in size, through a spinneret comprising a plurality of hole openings to produce a fiber bundle; and cooling the fiber bundle with a cooling medium having a temperature that ranges from about 0° C. to about 80° C.

Abstract: A thermoplastic polyimide having good processing characteristics, obtainable by polymerizing an acid component and a diamine component, wherein an aromatic tetracarboxylic acid dianhydride represented by formula (I): or its derivative is used at least as a part of the acid component.

Abstract: The invention provides hyper-branched polymer manufactured by adding a bismaleimide and a barbituric acid into a Brönsted base solution and reacting the mixture at 20 to 100° C. The formation may further include maleimide monomer and/or multi-maleimide monomer to modify the hyper-branched polymer properties. In addition, the barbituric acid is added to the reaction in a batch not initially charged with other reactants in a one-pot.

Abstract: A polyimide resin which is satisfactory in solvent solubility and heat resistance, has a low coefficient of water absorption and is excellent in adhesive properties and a method for manufacturing the same, a film containing the subject polyimide resin and a metal-clad laminate including an adhesive layer composed of the subject polyimide resin are provided. The polyimide resin is a polyimide resin containing a molecule having a repeating unit represented by a structure of any one of the following formulae (1) to (3) in a specified proportion, whose molecular end is capped by an end-capping agent.

Abstract: The present invention discloses an antireflective coating composition for applying between a substrate surface and a positive photoresist composition. The antireflective coating composition is developable in an aqueous alkaline developer. The antireflective coating composition comprises a polymer, which comprises at least one monomer unit containing one or more moieties selected from the group consisting of a lactone, maleimide, and an N-alkyl maleimide; and at least one monomer unit containing one or more absorbing moieties. The polymer does not comprise an acid labile group. The present invention also discloses a method of forming and transferring a relief image by using the inventive antireflective coating composition in photolithography.