Abstract: A polymer composition of cross-linked fluoropolymers is provided, that is generated using a fluoropolymer compatibilizer. The cross-linked fluoropolymers have excellent mechanical and dielectric characteristics at high temperatures, making them useful for such applications as insulation for automotive communications cables and PCB laminates.

Abstract: A resin composition includes the following components or a prepolymerized product thereof. (A) 100 parts by weight of a prepolymer and (B) 5 parts by weight to 30 parts by weight of a diallyl bisphenol resin, wherein the prepolymer is prepared by subjecting a reaction mixture to a prepolymerization reaction, the reaction mixture includes a maleimide resin, an amino-modified silicone and cyclohexanone, and relative to a total of 100 parts by weight of the maleimide resin, the amino-modified silicone and the cyclohexanone, the reaction mixture includes 60 parts by weight to 80 parts by weight of the maleimide resin, 15 parts by weight to 30 parts by weight of the amino-modified silicone and 2 parts by weight to 15 parts by weight of the cyclohexanone; the reaction mixture does not include m-aminophenol or p-aminophenol; and the amino-modified silicone has an amino equivalent of 750 g/mol to 2500 g/mol.

Abstract: An amorphous, optically transparent, colorless shape memory assisted self-healing coating for optical glassware applications that uses a combination of surface shape memory and self-healing properties to repair damaged sites on glass substrates when exposed to a thermal stimulus. The coating includes a miscible combination of a network polymer and a linear polymer having glass transition temperate between room temperature and about 40 degrees C. The coating can be used for corrective eyewear, for windshields and windows in automobiles and motorcycles, as well for as optical coatings wherever needed.

Abstract: A rare earth bonded magnet comprises a rare earth-iron-based magnetic powder and a thermosetting resin composition. The thermosetting resin composition is obtained by blending a dicyclopentadiene type epoxy resin as a base resin and dicyandiamide as a curing agent. The dicyclopentadiene type epoxy resin includes a predetermined structure wherein an average value of a repeating unit n is 1 to 3.

Abstract: Disclosed is a flexible maleimide polymer. The flexible maleimide polymer includes a reaction product of reactants (a)-(c). The reactant (a) is maleimide, a compound with a structure represented by Formula (I), a compound with a structure represented by Formula (II), or combinations thereof wherein R1 is —(CH2)10—CO2H, and R2 is H, OH, SO3Na, NO2, CN or CO2H. The reactant (b) is a compound with a structure represented by formula (III) wherein A is R3 is H or methyl group, x is between 1-12, R4 is H or methyl group, and y and z are both between 1-5. The reactant (c) is a compound with a structure represented by formula (IV), or a compound with a structure represented by formula (V) wherein R5 and R6 are independent H or C1-4 alkyl group.

Abstract: Uncured thermosetting resins are loaded with relatively high amounts of solid thermoplastic resin particles to form a resin precursor. The resin precursor is heat treated so as to produce an uncured resin composition wherein the thermoplastic resin particles become substantially dissolved in the thermosetting resin without causing cure of the resin mixture. Heat treatment of highly loaded thermosetting resins in accordance with the present invention provides uncured resin compositions that are well suited for use in fabricating composite structures and particularly prepreg for use in lightning protection surface coatings.

Abstract: There may be provided a process for producing a polyimide siloxane solution composition having a further improved long-term viscosity stability; and a polyimide siloxane solution composition. In the process for producing the polyimide siloxane solution composition by polymerizing/imidizing a tetracarboxylic acid component and a diamine component consisting of (a) a diaminopolysiloxane, (b) a diamine having a polar group and (c) a diamine other than (a) and (b) in a solvent, the tetracarboxylic acid component and the diamine component excluding (b) the diamine having a polar group are polymerized/imidized to provide a reaction mixture solution, and then (b) the diamine having a polar group is added to the reaction mixture solution last, and the mixture is polymerized/imidized.

Abstract: A thermosetting oligomer or thermosetting polymer is provided. The thermosetting oligomer or thermosetting polymer contains repeating units, each of which has at least one thermosetting functional group in the side chain and is represented by Formula 1: where repeating units include X1, A1, and Y1 subunits, sidechain units include linking unit L and thermosetting functional group Z, and n is an integer from 1 to 4. The thermosetting oligomer or thermosetting polymer has a low coefficient of thermal expansion and high or no glass transition temperature, stiffness, processability, heat resistance and mechanical properties. The thermosetting oligomer or thermosetting polymer is highly soluble, wettable and dimensionally stable and is suitable for use in films, prepregs and printed circuit boards. Further provided are a thermosetting resin composition including the thermosetting oligomer or thermosetting polymer and a printed circuit board using the composition.

Abstract: Thermosetting resins are provided that are toughened with an irradiated thermoplastic toughening agent and which have reduced levels of solvent-induced micro crack formation. The thermoplastic toughening agent is treated with a sufficient amount of high-energy radiation (e.g. electron beam or gamma rays) to cause a reduction in solvent-induced micro crack formation in the cured resin when compared to the same toughened thermosetting resin in which the non-irradiated version of the thermoplastic toughening agent is used.

Abstract: The invention provides a circuit board comprising a substrate and a dielectric material provided on the substrate. The dielectric material comprises (i) 40˜80 parts by weight of polyphenylene ether resin having a Mw of 1000˜7000, a Mn of 1000˜4000 and Mw/Mn=1.0˜1.8; (ii) 5˜30 parts by weight of bismaleimide resins; and (iii) 5˜30 parts by weight of polymer additives, wherein the dielectric material has Dk of 3.75˜4.0 and Df of 0.0025˜0.0045. The dielectric material is suitably used in prepregs and insulation layers of a circuit board, because it has high Tg, low thermal expansion coefficient, low moisture absorption and excellent dielectric properties such as Dk and Df.

Abstract: The disclosure relates to a process that includes blending a polyimide resin and a primary alky amine organic compound to produce an aryl amine functionalized polyimide, having aryl amine functionality in excess of any anhydride functionality. The polyimide resin can have a weight average molecular weight (Mw) from 5,000 to 100,000 daltons. The organic compound can include at least one primary aliphatic amine without a direct linkage of a nitrogen to an aryl group and without a functionality selected from a halogen functionality, a hydroxyl functionality, a sulfonic acid functionality, a sulfonic acid salt functionality, and combinations thereof. The disclosure also relates to alkyl imide functionalized polyimides also with aryl amine functionalized polyimides, having aryl amine functionality in excess of any anhydride functionality and articles produced therefrom.

Abstract: The present invention relates to a reversible fluorescence photoswitch based on the dye-crosslinked dendritic nanoclusters for high-contrast imaging of living biological systems. The dendritic nanocluster according to the present invention consists of two or more dendrimers crosslinked each other to have a globular shape overall, and thereby enhancing the fluorescence intensity and improving the detection sensitivity of the monomeric dendrimers. In addition, the dendritic nanocluster according to the present invention was found to internalize into a living zebrafish by both skin permeation and microinjection, independently. Further, the dendritic nanocluster according to the present invention showed low toxicity and thus it could be useful for both in vivo and in vitro imaging as well as the ex vivo cell tracking applications.

Abstract: An adhesive composition for semiconductor containing an organic-solvent-soluble polyimide (a), an epoxy compound (b) and a hardening accelerator (c), wherein per 100 wt parts of the epoxy compound (b), there are contained 15 to 90 wt parts of the organic-solvent-soluble polyimide (a) and 0.1 to 10 wt parts of the hardening accelerator (c), wherein the epoxy compound (b) contains a compound being liquid at 25° C. under 1.013×105 N/m2 and a compound being solid at 25° C. under 1.013×105 N/m2, and wherein a ratio of compound being liquid based on all the epoxy compounds is 20 wt % or more and 60 wt % or less.

Abstract: There are provided a resin composition including: (a) a maleimide compound with at least two N-substituted maleimide groups per molecular structure; and (b) a silicone compound with at least one amino group per molecular structure and also provided a prepreg, a laminated plate, and a printed wiring board that are formed by using this resin composition. The multi-layered printed wiring board produced by using the laminated plate produced by laminating and molding the prepreg obtained from the resin composition of the present invention has excellent glass transition temperature, coefficient of thermal expansion, solder heat resistance, and warp characteristics. The multi-layered printed wiring board is useful as a highly integrated printed wiring board for an electronic device.

Abstract: An aromatic vinyl-based thermoplastic resin composition includes a rubber-modified acrylic graft copolymer and a branched aromatic vinyl copolymer resin including a silicon compound.

Abstract: A liquid crystal alignment agent is provided that includes a polymer including polyamic acid including a repeating unit represented by the following Chemical Formula 1, polyimide including a repeating unit represented by the following Chemical Formula 2, or a combination thereof. In Chemical Formulae 1 and 2, each X1, X2, Y1 and Y2 is the same as in the detailed description.

Abstract: The present teachings provide a fuser member. The fuser member includes a substrate layer comprising a polyimide polymer and a hydroxyl terminated polybutadiene. A method of manufacturing a fuser member containing a polyimide polymer and a hydroxyl terminated polybutadiene is presented.

Abstract: The present invention relates to a resin composition containing: a polyimide silicone which has, in a silicone moiety therein, a crosslinking site at which a crosslinking reaction occurs upon heating at a second temperature, in which the crosslinking reaction proceeds by heating a third temperature that exceeds the second temperature further than the second temperature; and a solvent which vaporizes upon heating at a first temperature that is lower than the second temperature.

Abstract: PEO-PPO-PEO polymers and vinyl monomers are used to prepare several block copolymers via consecutive atom transfer radical polymerization (ATRP). The block copolymers provide good delivery characteristics and can be used as a gene/drug delivery carrier for therapy and diagnosis.

Abstract: The present invention provides novel hybrid polymer useful for alignment layers for inducing alignment of a liquid crystal medium. Hybrid polymers of this invention are prepared from a) at least one component selected from the group consisting of oligomer(s) and polymer(s) within the class of polyimides, poly(amic acids) and esters thereof wherein the at least one component comprises at least one initiator generating moiety, and b) at least one component selected from the group consisting of addition monomer(s) and addition polymer(s), wherein the two components are covalently bonded to form a copolymer. The invention further describes liquid crystal elements such as all liquid crystal display products or modes, liquid crystal devices and liquid crystal optical films comprising the novel hybrid polymer alignment layers.

Abstract: The invention pertains to an isocyanate-modified photosensitive polyimide. The photosensitive polyimide of the invention possesses excellent heat resistance, chemical resistance and flexibility, and can be used in a liquid photo resist composition or dry film photo resist composition, or used in a solder resist, coverlay film, or printed wiring board.

Abstract: The invention relates to a liquid dispersant based on polyamine-graft-polyacrylate blend, its preparation and its use in solvent borne systems, especially to a polyamine-g-polyacrylate grafted copolymer blend of the general formula (1) or a mixture of formula (1) and YT-(A1,A2)-Y1 wherein T is a polyamine or polyimine, A1 is a bridging bond which is selected from amide or amide, A2 is a —N—C— bridging bond, Y is an acrylate residue of the general formula (2), wherein, R1 and R2 are, independently, hydrogen or C1-20alkyl, aryl, heteroaryl, substituted aryl. n is a number of 1-1000, wherein the polyamine-g-polyacrylate grafted copolymer blend has an average molecular weight of 50 000 g/mol to 150 000 g/mol and a polydispersity Mw/Mn is greater than 3.

Abstract: Various embodiments provide a photosensitive siloxane composition containing (a) polysiloxane, (b) a quinone diazide compound, (c) a solvent, and (d) one or more kinds of specified imidosilane compounds. Various embodiments also provide a cured film obtained by applying and/or patterning the photosensitive siloxane composition. Various embodiments further provide a device including the cured film.

Abstract: The present disclosure relates to a high molecular weight, monoesterified polyimide polymer. Such high molecular weight, monoesterified polyimide polymers are useful in forming crosslinked polymer membranes for the separation of fluid mixtures. According to its broadest aspect, the method of making a crosslinked membrane comprises the following steps: (a) preparing a polyimide polymer comprising carboxylic acid functional groups from a reaction solution comprising monomers and at least one solvent; (b) treating the polyimide polymer with a diol at esterification conditions in the presence of dehydrating conditions to form a monoesterified polyimide polymer; and (c) subjecting the monoesterified fiber to transesterification conditions to form a crosslinked fiber membrane, wherein the dehydrating conditions at least partially remove water produced during step (b). The crosslinked membranes can be used to separate at least one component from a feed stream including more than one component.

Abstract: Disclosed are a liquid crystal alignment agent, and a liquid crystal alignment film and a liquid crystal display (LCD) including the same. The liquid crystal alignment agent includes a polymer of polyamic acid, a polyimide, or a combination thereof, and an epoxy compound represented by the following Chemical Formula 1. In the above Chemical Formula 1, each substituent is the same as defined in the specification.

Abstract: The present disclosure relates to a composition with improved flame resistance, to articles made from the composition, and to methods that include processing the composition. The composition can include from 15 to 85 percent by weight of a polyetherimide (PEI), from 15 to 85 percent by weight of a polyphenylsulfone (PPSU), a polyetherimide-siloxane copolymer in an amount up to 12 percent by weight, and from 0 to 0.30 percent by weight of a stabilizer.

Abstract: An electronic device including electronic circuit structures formed with an electrically conductive adhesive (ECA) with low and stable contact resistance including at least one melt-processable reactive resin, at least one reactive diluent, at least one rheological additive, at least one curing agent, at least one organic acid catalyst, and copper particles. The ECA is useful for filling vias, and bonding together components of electronic circuit structures.

Abstract: The present invention relates to a reversible fluorescence photoswitch based on the dye-crosslinked dendritic nanoclusters for high-contrast imaging of living biological systems. The dendritic nanocluster according to the present invention consists of two or more dendrimers crosslinked each other to have a globular shape overall, and thereby enhancing the fluorescence intensity and improving the detection sensitivity of the monomeric dendrimers. In addition, the dendritic nanocluster according to the present invention was found to internalize into a living zebrafish by both skin permeation and microinjection, independently. Further, the dendritic nanocluster according to the present invention showed low toxicity and thus it could be useful for both in vivo and in vitro imaging as well as the ex vivo cell tracking applications.

Abstract: The present invention relates to the field of polymer chemistry and more particularly to homopolymers and block copolymers and methods of preparing the same.

Abstract: Copolymers having linked internal polyether blocks and internal polyamide blocks have advantageous physical properties and solvent-gelling abilities. The copolymer may be prepared from a reaction mixture that contains 1,4-cyclohexane dicarboxylic acid (CHDA) and poly(alkyleneoxy) diamine (PAODA). Optionally, the reaction mixture contains no monofunctional compound reactive with either amine or carboxylic acid groups, however some of this monofunctional compound may be present. Dimer diamine and/or dimer acid may be present in the reaction mixture. A copolymer may also be prepared from a reaction mixture containing dimer acid and at least two diamine compound(s) including PAODA and short-chain aliphatic diamine having 2-6 carbons (SDA), wherein: a) the reaction mixture comprises x grams of PAODA and y grams of SDA, and x/(x+y) is 0.8-0.98; b) the reaction mixture weighs z grams, and x/z is at least 0.

Abstract: Methods and facilities are provided for extracting a metal, such as an actinide from a solid, such as an ore. A novel class of dendritic macromolecules is provided for use in such extraction having a core, a hyperbranched structure, and a plurality of units satisfying the formula —NR2(C?O)R1, in which R1 is not a continuation of the hyperbranched structure.

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: The present invention relates to organic polymer porous materials, and in particular, to an organic polymer porous material that functions as a reusable insoluble solid catalyst and a method for producing the same. The organic polymer porous material of the present invention is characteristic in that the amount of immobilized bases is high and the specific surface area is large. The object has been achieved by an organic polymer porous material including a polymer (PA) obtained by polymerizing a polymerizable composition (A) containing a compound (a) obtained by reacting a dendrimer (a1) having at least an amino group as a reactive functional group or a polyethyleneimine (a2) having at least an amino group as a reactive functional group with a compound (a3) having a vinyl group and a group that can react with the reactive functional group.

Abstract: The present disclosure relates to a high molecular weight, monoesterified polyimide polymer. Such high molecular weight, monoesterified polyimide polymers are useful in forming crosslinked polymer membranes for the separation of fluid mixtures. According to its broadest aspect, the method of making a crosslinked membrane comprises the following steps: (a) preparing a polyimide polymer comprising carboxylic acid functional groups from a reaction solution comprising monomers and at least one solvent; (b) treating the polyimide polymer with a diol at esterification conditions in the presence of dehydrating conditions to form a monoesterified polyimide polymer; and (c) subjecting the monoesterified fiber to transesterification conditions to form a crosslinked fiber membrane, wherein the dehydrating conditions at least partially remove water produced during step (b). The crosslinked membranes can be used to separate at least one component from a feed stream including more than one component.

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 polyimide film having a polyimide as the primary constituent and containing at least a polymeric electroconductive material, wherein in a weight-decrease vs. temperature-increase curve when the polyimide film is heated gradually from 30° C., a weight-decrease rate at a first inflection point, where an amount of difference in weight-decrease rates decreases first from 30° C., is in the range of ?1.9% or more and ?1.4% or less.

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: The present disclosure relates to a composition with improved flame resistance, to articles made from the composition, and to methods that include processing the composition. The composition can include from 15 to 85 percent by weight of a polyetherimide (PEI), from 15 to 85 percent by weight of a polyphenylsulfone (PPSU), a polyetherimide-siloxane copolymer in an amount up to 12 percent by weight, and from 0 to 0.30 percent by weight of a stabilizer.

Abstract: An electrical wire comprising a conductor and a covering disposed over the conductor. The covering comprises a thermoplastic composition. The thermoplastic composition comprises a blend of an aromatic polyketone and a polysiloxane/polyimide block copolymer. The composition can further comprise one or more additives.

Abstract: A composition comprises a blend of an aromatic polyketone and a polysiloxane/polyimide block copolymer. The composition can further comprise one or more additives.

Abstract: A proton exchange membrane and method for formation the same is disclosed. When forming the proton exchange membrane, first, a bismaleimide and barbituric acid are copolymerized to form a hyper-branched polymer. Next, the solvent of the sulfonated tetrafluorethylene copolymer (Nafion) aqueous solution is replaced with dimethyl acetamide (DMAc). 10 to 15 parts by weight of the hyper-branched polymer is added to 90 to 85 parts by weight of the Nafion in the DMAc solution, stood and heated to 50° C. for inter-penetration of the hyper-branched polymer and the Nafion. The heated solution is coated on a substrate, baked, and pre-treated to remove residue solvent to complete formation of the proton exchange membrane.

Abstract: A resin composite copper foil comprising a copper foil and a resin layer containing a block copolymer polyimide and a maleimide compound, the resin layer being formed on one surface of the copper foil, a production process thereof, a copper-clad laminate using the resin composite copper foil, a production process of a printed wiring board using the copper-clad laminate, and a printed wiring board obtained by the above process.

Abstract: A thermoplastic resin composition comprising 100 parts by mass of a polyamide resin composition (A) and 0.1 to 10 parts by mass of a carbodiimide compound (B) having two or more carbodiimide groups. The polyamide resin composition (A) contains a polyamide resin (a-1) and nylon 11 and/or nylon 12 (a-2) in an amount of 5 to 95% by mass of the component (a-1) and 95 to 5% by mass of the component (a-2) each based on a total amount of the components (a-1) and (a-2). The polyamide resin (a-1) is constituted by diamine units 70 mol % or more of which are derived from m-xylylenediamine and dicarboxylic acid units 70 mol % or more of which are derived from a C4 to C20 ?,?-linear aliphatic dicarboxylic acid. The thermoplastic resin composition is excellent in barrier property, strength and impact resistance, in particular, barrier property to alcohol-containing fuels, and suitably used as various shaped articles such as fuel containers, tubes and parts.

Abstract: The present invention discloses blend polymer membranes comprising thermally rearranged polymers derived from aromatic polyimides containing ortho-positioned functional groups and methods for making and using these blend polymer membranes. The blend polymer membranes described in the current invention are prepared by heat treatment of blend polymer membranes comprising aromatic polyimides containing ortho-positioned functional groups such as —OH or —SH groups. In some instances, an additional crosslinking step is performed to improve the selectivity of the membrane. These blend polymer membranes have improved flexibility, reduced cost, improved processability, and enhanced selectivity and/or permeability compared to the comparable polymer membranes that comprise a single polymer.

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: An electrically conductive adhesive (ECA) with low and stable contact resistance includes at least one melt-processable reactive resin, at least one reactive diluent, at least one rheological additive, copper particles, at least one curing agent and at least one organic acid catalyst. The ECA is useful for filling vias, and bonding together components of electronic circuit structures.

Abstract: A composition having a bismaleimide oligomer and preparation methods thereof are provided. The composition having a bismaleimide oligomer comprises a bismaleimide oligomer, wherein the bismaleimide oligomer is in an amount of more than 75 parts by weight, based on 100 parts by weight of the composition. Specifically, the bismaleimide oligomer is prepared by reacting bismaleimide monomers with batch-added barbituric acid.

Abstract: A composition for fixing wound items comprising A) 0 to 90 wt % of at least one ?, ?-unsaturated polyester and/or polyester imide resin based on at least one unsaturated mono-, di- or tricarboxylic acids and/or mono-, di- or tricarboxylic acid group containing molecules, at least one polyol and/or, in case of an unsaturated polyester imide, at least one imide having 5-membered cyclic imide moieties, B) 0.1 to 80 wt % of at least one inorganic and/or organic-inorganic hybrid component having functionalities to react with component A) and C), C) 2 to 80 wt % of at least one monomeric and/or oligomeric unsaturated component to react with component A) and B), and D) 0 to 15 wt % of customary additives, the wt % being based on the total weight of the composition. The composition provides excellent thermal transfer properties and a high level of electrical insulation properties with excellent adhesion and thermal stability.

Abstract: The present invention provides a thermoplastic resin composition that excels in the slidability and mold release ability at molding of thermoplastic resin by virtue of mixing of a small amount of a polyorganosiloxane-containing graft copolymer excellent in powder characteristics. The present invention can solve the above-mentioned problem by providing thermoplastic resin composition comprising 0.01 to 5% by weight of a polyorganosiloxane-containing graft copolymer (C) and 99.

Abstract: A modified polyimide resin favorably employable for manufacturing an insulation film of an electric-electronic device is composed of recurring units (I) derived from a biphenyltetracarboxylic acid compound, a diamine compound, and a monoamine compound having at least one hydroxyl group and recurring units (II) derived from diisocyanate and polybutadiene having hydroxyl group at each terminal, which optionally contains further recurring units (III) derived from diisocyanate and a compound having hydroxyl group at each terminal and further having a reactive substituent.