Abstract: Surfactants capable of releasing and/or dissolving polymers to form water-soluble or water-dispersible polymer solutions are disclosed. In addition, polymer compositions containing a water-in-oil emulsion comprising the surfactant are provided and can be used, for example, in methods of dissolving a polymer. These surfactants and polymer compositions can be used in various industries including for water clarification, papermaking, sewage and industrial water treatment, drilling mud stabilizers, and enhanced oil recovery.

Abstract: Disclosed is a self-healing polysilsesquioxane and a hybrid film using the same. Once crosslinked, the polysilsesquioxane copolymer can self-heal within several minutes at 100-120° C. The self-healing polysilsesquioxane copolymer can be prepared into a hybrid material in the form of a film. Because the hybrid film has an excellent ability of self-healing the damage caused by external impact, it is applicable to wide applications such as gas separation membranes, etc., without limitation.

Abstract: The invention concerns fiber, and a process for making same, the fiber comprising a mixture of at least a first polymer and a second polymer, the first polymer having a structure derived from the reaction of one or more amine monomers and a plurality of acid monomers, wherein the one or more amine monomers includes at least 60 mole percent 5(6)-amino-2-(p-aminophenyl)benzimidazole, and the plurality of acid monomers include those having a structure of Cl—CO—Ar1—CO—Cl and Cl—CO—Ar2—CO—Cl wherein Ar1 is an aromatic group having para-oriented linkages and Ar2 is an aromatic group having meta-oriented linkages, and wherein the plurality of acid monomers has at least 50 mole percent of the monomer containing aromatic group Ar2; and the second polymer has a structure derived from the reaction of metaphenylene diamine and isophthaloyl chloride. This fiber has use in heat-resistant protective apparel fabrics and garments.

Abstract: The present invention aims to provide a production method that can produce an aqueous dispersion containing polyvinylidene fluoride with high productivity. The present invention relates to a method of producing an aqueous dispersion of polyvinylidene fluoride, including: emulsion polymerization of vinylidene fluoride in the presence of a surfactant, an organic peroxide, and water to produce an aqueous dispersion that contains polyvinylidene fluoride. The surfactant has a surface tension of 55 mN/m or smaller when added in an amount of 1000 ppm.

Abstract: The present invention relates to a coating composition comprising at least one thermoplastic acrylonitrile-butadiene-styrene copolymer in a content of at least 30% by weight of the solids content of the coating composition, at least one UV-curable reactive diluent in a content of at least 30% by weight of the solids content of the coating composition, at least one photoinitiator in a content of ?0.1 to ?10 parts by weight of the solids content of the coating composition and at least one organic solvent, where the proportion of ethylenically unsaturated groups is at least 3 mol per kg of the solids content of the coating composition. This is used to provide films and moldings coated therewith, having a metallizable, scratch-resistant and solvent-resistant surface.

Abstract: A composite polymer solution comprising a homogeneous mixture of a first polymer solution comprising a first polymer having a structure derived from the reaction of one or more amine monomers and a plurality of acid monomers, wherein i) the one or more amine monomers includes at least 60 mole percent 5(6)-amino-2-(p-aminophenyl)benzimidazole; and ii) the plurality of acid monomers include those having a structure of Cl—CO—Ar1—CO—Cl and Cl—CO—Ar2—CO—Cl wherein Ar1 is a para-oriented aromatic group and Ar2 is a meta-oriented aromatic group, and wherein the plurality of acid monomers has at least 50 mole percent of the monomer containing Ar2; and a second polymer solution comprising a second polymer having a structure derived from the reaction of metaphenylene diamine and isophthaloyl chloride.

Abstract: The present invention provides compositions comprising particles or agglomerates of one or more telomer or cotelomer ((co)telomer) of one or more methacrylic acids or anhydrides having a mean average particle size of from 2 ?m to 1 mm, preferably from 5 to 500 ?m. In addition, the present invention provides methods comprising aqueous solution addition polymerizing a monomer mixture of one or more methacrylic acid in the presence of a heteroatom containing compound, drying the resulting copolymer at a temperature of from 120 to 230° C. and reducing its particle size to make a (co)telomer particle or agglomerate; the methods may further comprise reacting the (co)telomer particle or agglomerate with one or more polyether polyol, alkyl polyether polyol, polyether amine or alkyl polyether amine, with heating, to form a comb polymer useful, e.g. as a superplasticizer or dispersant.

Abstract: This invention relates to a coating formulation, a coating formulation for manufacturing an electrode plate and an undercoating formulation, and their use. These coating formulations are all characterized by containing, in a polar solvent, a hydroxyl-containing resin and an organic acid and/or a derivative thereof. The hydroxyl-containing resin is at least one of (1) a polyvinyl acetal resin, (2) an ethylene-vinyl alcohol copolymer, (3) a modified and/or unmodified polyvinyl alcohol, and (4) a cyanoethyl-containing polymer. According to the present invention, there is provided a coating formulation capable of forming a coating of excellent adhesion and solvent resistance on a surface of a metal material such as an aluminum material.

Abstract: A polyimide precursor, a polyimide using the polyimide precursor, and a polyimide film using the polyimide. The polyimide precursor comprises a structural unit represented by general formula (AI): in which A is tetravalent aromatic group or aliphatic group, B is divalent aromatic group, and each R2 independently represents hydrogen, an alkyl group having 1 to 6 carbon atoms, or an alkylsilyl group having 3 to 9 carbon atoms, in which B in general formula (AI) includes a triazine moiety represented by following formula (AB1): in which R1 represents hydrogen, an alkyl group having 1 to 6 carbon atoms or an aromatic group, and R3 represents hydrogen, methyl or ethyl.

Abstract: Disclosed is a low toxicity aprotic alkyl amide solvent system used for the dissolution and application of polyamideimide and polyamide amic acid polymer resins. The solvent system can be used for the dissolution of polyamideimide and polyamide amic acid resins as an efficient method for incorporating these resins into functional coating compositions with the use of the solvent system.

Abstract: A composite polymer solution comprising a homogeneous mixture of at least a first polymer solution and a second polymer solution; the first polymer solution comprising an amide solvent and a first polymer having a structure derived from the reaction of one or more amine monomers and a plurality of acid monomers, wherein i) the one or more amine monomers includes at least 60 mole percent 5(6)-amino-2-(p-aminophenyl)benzimidazole, based on the total amount of amine monomers; and ii) the plurality of acid monomers include those having a structure of Cl—CO—Ar1—CO—Cl & Cl—CO—Ar2—CO—Cl wherein Ar1 is a para-oriented aromatic group and Ar2 is a meta-oriented aromatic group, and wherein the plurality of acid monomers has at least 50 mole percent of the monomer containing aromatic group Ar2; and the second polymer solution comprising an amide solvent and a second polymer having a structure derived from the reaction of metaphenylene diamine and isophthaloyl chloride.

Abstract: A method for marking an item including a shape memory polymer (SMP) having a visual readable and/or machine readable graphic element on the surface of the item. The method includes pretreating the surface of the item; colouring the surface of the item with a dye solution containing an organic dye and an organic solvent; cleaning and drying the surface of the item; and engraving by at least partially ablating the surface of the item. The dyeing process is suitable for colouring the surface of a shape memory polymer (SMP), wherein the information is engraved in a form of a code or other label on the coloured surface. The colouring causes an increased contrast and thus facilitates machine readability of marking and coding without affecting the other properties of the SMP.

Abstract: The present disclosure, in one aspect, relates to a polyamide solution including an aromatic polyamide and a solvent, wherein the aromatic polyamide includes at least two types of constitutional units, and a change rate of coefficient of thermal expansion (CTE) of a cast film produced by casting the polyamide solution on a glass plate and CTE of the same cast film after being subjected to a heat treatment at temperature of 200° C. to 450° C. (=CTE after heat treatment/CTE before heat treatment) is 1.3 or less.

Abstract: An organic polymer solution may include about 0.1%-30% by weight of a specific polymer having rigid rod-like molecules. These molecules may include various cores, spacers, and sides groups to ensure their solubility, viscosity, and cross-linking ability. The rigid rod-like molecules are selected in such a way that they form self-assembling structures in the polymer solution, which makes it a lyotropic liquid crystal. The organic polymer solution, when properly deposited on a substrate and dried to remove solvents, forms a solid optical retardation layer of positive A-type substantially transparent to electromagnetic radiation in the visible spectral range.

Abstract: A polymer composition containing a polyacetal resin, a metallic pigment, and an ultraviolet light stabilizer is disclosed that exhibits a metallic brilliant appearance. The metallic pigment, the ultraviolet light stabilizer and the polyacetal resin can be mixed in a high intensity mixer prior to being used to mold polymer articles.

Abstract: Thermoplastic Polyimide (TPI) polymer adhesive coated laminating film in which the TPI coating is under cured or B-staged as well as the process for preparing the film is disclosed.

Abstract: The present invention relates to a novel diamine compound, wherein two substituents R and R? are introduced asymmetrically, and a polymer thereof. The polymer may have excellent solubility in the organic solvent and allows for easy processibility after imidization, thus giving proper film maintaining superior properties, such as thermal, mechanical, and optical properties for applications in electrical, electronic, or optical materials.

Abstract: The present invention relates to a composition for a flexible substrate having thermal yellowing resistance. The composition for the flexible substrate comprises a polymer (A), an inorganic oxide particle (B), a silane compound containing an amino group (C) and a solvent (D). The polymer (A) is selected from the group consisting of a polyamic acid resin, a polyimide resin and any combination thereof. The polymer (A) is obtained by reacting a mixture that includes a tetracarboxylic dianhydride component and a diamine component.

Abstract: A sulfonated polymer comprising a 3-substituted fused thienothiophene repeat unit, a composition comprising the polymer, a method of making the polymer, and a device comprising the polymer. The polymers can be used in hole injection or hole transport layers, or other applications in organic electronic devices.

Abstract: This disclosure, in one or plurality of embodiments, relates to a solution of polyamide from which a cast film with low CTE and Rth can be achieved. This disclosure, viewed from one aspect, relates to a solution of polyamide comprising: an aromatic polyamide; inorganic filler; and a solvent. This disclosure, viewed from one aspect, relates to a laminated composite material, comprising a base, and a polyamide resin layer: wherein the polyamide resin layer is laminated to one surface of the base; and wherein the polyamide resin layer is obtained or obtainable by applying a polyamide solution comprising an aromatic polyamide, an inorganic filler and a solvent onto the base.

Abstract: The present invention relates to a polyurethane resin composition for a support pad including a polyurethane resin, a DMF solvent, an anionic surfactant, and polyethylene glycol (PEG), and a polyurethane support pad including the polyurethane resin composition for a support pad. According to the present invention, long and large pores may be uniformly formed therein, and thus a support pad having an excellent compression rate and compression recovery rate may be provided.

Abstract: Ink composition for continuous deflected jet printing, that is liquid at ambient temperature, comprising a solvent containing less than 0.5% by weight of water and less than 0.5% by weight of alcohols relative to the total weight of the ink composition; one or more dye(s) and/or pigment(s) that is (are) insoluble in water, and in mixtures of water and of at least one alcohol; and a binder, comprising at least 50% by weight, relative to the total weight of the binder, of at least one binder resin capable of being obtained by reaction between at least one alkoxysilane and at least one hydroxyaromatic resin.

Abstract: A method for dissolving and degassing a polymer is described, including a dissolution/degassing step. In the dissolution/degassing step, a mixture containing the polymer and a solvent is agitated, in a pressure-reduced condition with a gauge pressure of ?50 to ?90 kPa and at a temperature lower than the boiling point of the solvent in the pressure-reduced condition but higher than the freezing point of the same, to dissolve the polymer and simultaneously degas the polymer solution, so as to obtain a polymer solution.

Abstract: Objects of the present invention are: to obtain a polyimide that is excellent in heat resistance, transparency, and optical isotropy and is soluble in an organic solvent; to provide, by using either a polyimide or a polyamic acid which is a precursor or the polyimide, a product or a member that is highly required to have heat resistance and transparency; and particularly to provide a product and a member both of which are obtained by applying a polyamic acid solution and a polyimide solution of the present invention to the surface of an inorganic substance such as glass, metal, metal oxide, or a single crystal silicon. These objects can be attained by a polyimide acid and a polyimide which are each prepared from an alicyclic tetracarboxylic dianhydride and a monomer having a fluorene structure.

Abstract: The present disclosure is directed toward solutions, transparent films prepared from aromatic copolyamides, and a display element, an optical element or an illumination element using the solutions and/or the films. The copolyamides, which contain pendant carboxylic groups are solution cast into films using cresol, xylene, N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidinone (NMP), dimethylsulfoxide (DMSO), or butyl cellosolve or other solvents or mixed solvent which has more than two solvents. When the films are thermally cured at temperatures near the copolymer glass transition temperature, after curing, the polymer films display transmittances >80% from 400 to 750 nm, have coefficients of thermal expansion of less than 20 ppm, and are solvent resistant.

Abstract: The present disclosure relates to a wear-resistant surface treating agent, a manufacturing method thereof, and a compressor using the same. According to one aspect of the present disclosure, the surface treating agent includes an organic solvent, nanodiamond powder and carbon nanotube powder dispersed in the organic solvent, and a PTFE solution mixed with the organic solvent, wherein the organic solvent is an amide-based organic solvent.

Abstract: An object of the present invention is to obtain a polyamide-imide solution that has a low linear thermal expansion coefficient, that is, an excellent linear thermal expansion coefficient, and that also is excellent in coating applicability. A further object of the present invention is to provide, with use of the polyamide-imide solution, a product or member which has high requirements for heat resistance and a low linear thermal expansion coefficient. In particular, the present invention is intended to provide a product or member that is suitably used for applications in which the polyamide-imide film obtained from the polyamide-imide solution of the present invention is formed on a surface of an inorganic material such as metal, metal oxide, or monocrystalline silicon.

Abstract: The present invention provides new polyimide materials suitable for use in optically transparent fiber composites, ribbon composites, and optical communications applications. The polyimide compounds include monomeric repeat units comprising a fluorinated moiety and a fluorene cardo structure. The polyimides exhibit good optical transparency and have a low absolute thermo-optic coefficient (|dn/dT|).

Abstract: A liquid crystal alignment agent contains a polymer and a solvent. The polymer is obtained by subjecting a mixture including a tetracarboxylic dianhydride component and a diamine component to a reaction. The diamine component includes a diamine compound of formula (I) defined herein, a benzimidazole-group-containing diamine compound, and a diamine compound other than the diamine compound of formula (I) and the benzimidazole-group-containing diamine compound. The liquid crystal alignment agent has superior processing stability, and a liquid crystal display element made from the aforesaid liquid crystal alignment agent has superior reliability.

Abstract: Stable, high performance polymer compositions including polybenzimidazole (PBI) and a melamine-formaldehyde polymer, such as methylated, poly(melamine-co-formaldehyde), for forming structures such as films, fibers and bulky structures. The polymer compositions may be formed by combining polybenzimidazole with the melamine-formaldehyde polymer to form a precursor. The polybenzimidazole may be reacted and/or intertwined with the melamine-formaldehyde polymer to form the polymer composition. For example, a stable, free-standing film having a thickness of, for example, between about 5 ?m and about 30 ?m may be formed from the polymer composition. Such films may be used as gas separation membranes and may be submerged into water for extended periods without crazing and cracking. The polymer composition may also be used as a coating on substrates, such as metal and ceramics, or may be used for spinning fibers. Precursors for forming such polymer compositions are also disclosed.

Abstract: A dielectric paste composition including: a plurality of inorganic dielectric particles, a binder, a solvent, and a halogenated hydrocarbon. Also disclosed is a method of forming a dielectric layer, a dielectric layer, and a device including the dielectric layer.

Abstract: Manufacturing processes are provided for nano-porous polymer membranes. Also provided are intermediates suitable to obtain such membranes; polymer membranes as defined herein; shaped articles containing such membranes; and the use of such membranes, shaped articles and intermediates.

Abstract: The present invention provides a polymer particle comprising a polymer and a filler contained therein, wherein the polymer is soluble in an organic solvent and is also water insoluble, and wherein the polymer particle contains from 5 to 500 parts by weight of filler per 100 parts by weight of polymer, and a mean particle size of 75 ?m or less. The invention also provides an aqueous dispersion including this particle; an aqueous fluororesin coating composition that uses this aqueous dispersion; and a fluororesin laminate or layered coating having a layer obtained from this fluororesin coating composition.

Abstract: The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5(6) amino phenyl benzimidazole (DAPBI), paraphenylene diamine (PPD), and terephthaloyl dichloride, comprising the steps of: (a) forming a solution of oligomers having amine end groups from two moles of DAPBI and one mole of terephthaloyl dichloride in a solvent system comprising an organic solvent and an inorganic salt; (b) adding PPD to the solution of oligomers; and (c) adding additional terephthaloyl dichloride to form a polymer.

Abstract: A water soluble binder composition includes a binder, the binder including a water soluble polyamic acid having an acid equivalent of about 300 to about 600 g/eq.

Abstract: Disclosed is a low toxicity aprotic alkyl amide solvent system used for the dissolution and application of polyamideimide and polyamide amic acid polymer resins. The solvent system can be used for the dissolution of polyamideimide and polyamide amic acid resins as an efficient method for incorporating these resins into functional coating compositions with the use of the solvent system.

Abstract: The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5(6)amino phenyl benzimidazole (DAPBI), paraphenylene diamine (PPD), and terephthaloyl dichloride, comprising the steps of: (a) forming a slurry of DAPBI in a solvent system comprising an organic solvent and an inorganic salt; (b) adding less than a stoichiometric amount, relative to the amount of DAPBI, of terephthaloyl dichloride to the slurry; (c) agitating the slurry to react the DAPBI and terephthaloyl dichloride to form an oligomeric solution; (d) adding PPD to the oligomeric solution and agitating until essentially all of the PPD is dissolved, followed by the addition of terephthaloyl dichloride to form a prepolymer solution; and (e) allowing the prepolymer solution to form a polymer.

Abstract: A flame retardant polyurethane elastomer composition containing an oligomeric phosphate obtained by reaction of a trialkyl phosphate with phosphorous pentoxide and an epoxides is provided. In a preferred embodiment, the polyurethane elastomer is a spandex. A method to prepare a fiber or yarn of the flame retardant elastomer and a fabric containing the fiber or yarn is also provided.

Abstract: A polymer comprising: at least one structural unit (i) selected from the group consisting of a structural unit represented by formula (1) below and a structural unit represented by formula (2) below, wherein a terminal structure of said polymer is independently a structural unit represented by formula (5) below or a structural unit represented by formula (6) below.

Abstract: The present teachings provide a composition that includes a functionalized polyfluoropolyether and functionalized polybutadiene in a weight ratio of functionalized polyfluoropolyether/functionalized polybutadiene of from about 20/80 to about 80/20 in a solvent. The composition can be used to form a surface layer having a water contact angle of greater than about 90° and a hexanedecane contact angle greater than about 45°.

Abstract: The invention relates to a non-fibrous polymer solution essentially consisting of 1 to 8 wt. % para-aramid, at least 50 mole % of the aromatic moieties thereof being unsubstituted, in a mixture of a) a polar amide solvent selected from N-methyl-2-pyrrolidone, N,N?-dimethylformamide, N,N?-dimethylacetamide, tetramethylurea, and mixtures thereof; b) between 0.7 mole of an alkali or earth alkali chloride per mole amide groups of the para-aramid and 7.5 wt. % of the alkali or earth alkali chloride, and c) water; and wherein at least 50 wt. % of the formed hydrochloric acid has been neutralized to obtain a solution having a dynamic viscosity which is at least a factor three smaller than the dynamic viscosity of the polymer solution without neutralization. The invention further pertains to a process making the same and para-aramid pulp-like fiber, paper and film made from said polymer solution.

Abstract: A process for the preparation of dispersions or solutions comprising polythiophene+An? ion complexes in anhydrous or low-water-content organic solvents, characterized in that at least one water-miscible organic solvent or a water-miscible solvent mixture is added to an aqueous dispersion or solution comprising optionally substituted polythiophenes, all or some of the water is removed, and the resultant dispersion or solution is, if desired, diluted with organic solvents.

Abstract: The present invention relates to a polyurethane resin composition including a first polyurethane resin and a second polyurethane resin that are different from each other in their compositions, an organic solvent, and a surfactant, and a polyurethane mounting pad manufactured from the resin composition.

Abstract: To provide a composition of a fluorinated copolymer containing repeating units derived from ethylene and TFE, which can be used for e.g. production of a thin film by coating and which can be produced at a relatively low temperature, and a process for producing such a fluorinated copolymer composition at a relatively low temperature. A fluorinated copolymer composition comprising a fluorinated copolymer (hereinafter ETFE) containing repeating units derived from ethylene and repeating units derived from tetrafluoroethylene, and a medium mixture composed of at least two members selected from media, each of which does not by itself dissolve ETFE in a concentration of at least 1 mass % at a temperature of not higher than the melting point of ETFE, and having a temperature range to exhibit a uniform solution state at a temperature of not higher than the melting point of ETFE, wherein the medium mixture has a specific value as the dissolution index for ETFE based on Hansen solubility parameters.

Abstract: Disclosed is a polyimide nanocomposite, which is prepared by mixing modified graphene oxide, polyamic acid, and a solvent to obtain a mixture solution, and heat-curing the mixture solution.

Abstract: The present invention provides new polyimide materials suitable for use in optically transparent fiber composites, ribbon composites, and optical communications applications. The polyimide compounds include monomeric repeat units comprising a fluorinated moiety and a fluorene cardo structure. The polyimides exhibit good optical transparency and have a low absolute thermo-optic coefficient (|dn/dT|).

Abstract: Coating systems and processes are disclosed for uniformly coating objects. The system comprises a pre-treatment unit, a first processing unit, a first post-treatment unit and one or more coating apparatus each configured to engage an object and rotate the object around or about two or more axes. The coating apparatus used in the system can comprise a first, second and/or third gimbals connected to rotational mechanisms to allow rotation of the gimbals around or about first, second and/or third axis. An object holder is connected to the third gimbal. When an object is present in the object holder, it can be immersed in a coating solution to form a coated object. The coated object is then rotated around or about two or three axes which produces a multidirectional centrifugal force which causes the coating solution to spread evenly over the surface of the object to produce a uniform thin film.

Abstract: Embodiments in accordance with the present invention encompass polymer compositions that are useful in the assembly of microelectronic components onto a variety of substrate materials. Such polymer compositions providing for both holding the microelectronic components at desired positions on a substrate, providing fluxing for the solder bonding of such components to the substrate and remaining in place as an underfill for such components.

Abstract: Hollow fiber membranes, such as those used in air separation modules, are generally made from solution spinning. Typically, solvent is present in the bore of the fiber for the spinning process. This solvent, in addition to the solvent already present in the polymer casting solution, may cause voids in the fiber material. By adding a polycarboxylic acid to the polymer casting material, these voids may be reduced or eliminated.

Abstract: The present teachings provide a composition that includes a functionalized polyfluoropolyether and functionalized polybutadiene in a weight ratio of functionalized polyfluoropolyether/functionalized polybutadiene of from about 20/80 to about 80/20 in a solvent. The composition can be used to form a surface layer having a water contact angle of greater than about 90° and a hexanedecane contact angle greater than about 45°.