Abstract: Disclosed is a flame-retardant polyamide composition excellent in fluidity during molding and granulation ability on a twin-screw extruder or the like. A molded article produced from the composition is excellent in mechanical properties including stiffness, heat resistance and flame retardancy during a reflow soldering process, and shows low warpage. Specifically disclosed is a flame-retardant polyamide composition comprising 20 to 80 mass % of a specific polyamide resin (A), 1 to 40 mass % of a flame retardant (B), 5 to 60 mass % of a glass fiber (C), and 0.5 to 5 mass % of an auxiliary flame retardant (D), which can be molded in an article having reduced warpage. Preferably, the glass fiber (C) has a cross section having an aspect ratio of greater than 3.

Abstract: The present disclosure is directed to a method of increasing optical density by incorporating carbon black in to a colored polyimide composition to obtain a colored polyimide film. The colored polyimide film has 48 to 94 weight percent of a polyimide, 5 to 25 weight percent pigment and 0.05 to 2 weight percent carbon black.

Abstract: An aromatic copoly(ester-sulfone) that contains one or more aromatic ester repeating units and one or more aromatic sulfonyl repeating units is provided. While a wide variety of aromatic ester repeating units may be employed, the polymer is nevertheless “low naphthenic” to the extent that it contains a minimal content of repeating units derived from naphthenic hydroxycarboxylic acids and naphthenic dicarboxylic acids. Despite the absence of a high level of conventional naphthenic acid repeating units, the present inventors have discovered that selective control over the type and relative concentration of the aromatic sulfonyl repeating units can lead to “low naphthenic” polymers that are not only soluble in certain solvents, but also capable of exhibiting good mechanical properties. Thus, the ability of the resulting polymer to be dissolved or dispersed in various solvents can be enhanced without sacrificing performance.

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: An aromatic polyester that contains one or more aromatic ester repeating units and one or more biphenyl repeating units is provided. While a wide variety of aromatic ester repeating units may be employed, the polymer is nevertheless “low naphthenic” to the extent that it contains a minimal content of repeating units derived from naphthenic hydroxycarboxylic acids and naphthenic dicarboxylic acids. Despite the absence of a high level of conventional naphthenic acid repeating units, the present inventors have discovered that selective control over the type and relative concentration of the biphenyl repeating units can lead to “low naphthenic” polymers that are not only soluble in certain solvents, but also capable of exhibiting good mechanical properties. Thus, the ability of the resulting polymer to be dissolved or dispersed in various solvents can be enhanced without sacrificing performance.

Abstract: A polyamide modified by a compound including at least one hydroxyl group, as well as a method for preparing said polyamide and articles obtained from the modified polyamide are described. A polyamide composition including reinforcing fillers, and a modified polyamide obtained by polymerization from, in particular, a monofunctional hydroxyaromatic acid or amino acid compound in the presence of diacid, diamine and/or amino acid or lactam compounds are also described.

Abstract: The present invention provides a material for alignment layer of liquid crystal display, which includes a solvent and a polymer dissolved in the solvent. The polymer includes a backbone and a first side chain linked to the backbone. The first side chain has a stronger lateral dipole moment. The material for alignment layer of liquid crystal display is characterized in that a first side chain that contains both a flexible chain segment and rigid chain segment is linked to the backbone of the polymer and the first side chain has a stronger lateral dipole moment, making it taking a rotation or tilting motion under the application of an electric field so as to effect alignment of the liquid crystal molecules in the pre-tilt angle.

Abstract: Disclosed is a thermoplastic composition including (A) a polyamide resin independently selected from the group consisting of Group (IV) Polyamides comprising (aa) about 50 to about 95 mole percent semiaromatic repeat and (bb) about 5 to about 50 mole percent aliphatic repeat units; and Group (VI) Polyamides having no melting point, (B) about 0.25 to about 15 weight percent of one or more polyhydric alcohols having more than two hydroxyl groups and a having a number average molecular weight (Mn) of less than 2000; (C) 0 to 60 weight percent of one or more reinforcement agents; and (D) 0 to 50 weight percent of a polymeric toughener wherein said polyamide resin has at least about 70 meq/Kg of amine ends.

Abstract: Disclosed are scratch-resistant, transparent and tough copolyamide moulding compounds distinguished by high scratch-resistance, excellent transparency and great toughness, which are suitable for producing transparent moulded articles or transparent coatings. The moulding compounds are obtained by polycondensation of a carboxylic acid mixture including at least one aliphatic dicarboxylic acid and at least one aromatic dicarboxylic acid with at least one cycloaliphatic diamine. Also disclosed are moulded parts or coatings produced from the copolyamide compounds.

Abstract: The present invention provides a polyamide composition for a reflector having high heat resistance and good mechanical properties, having excellent adhesion to a sealing material for an LED package, and capable of retaining a high reflectance even after exposure to heat and light intended for the production process of the LED package and the environment in which the reflector is used in the LED package, when it is molded. The present invention is a polyamide composition for a reflector, containing: 30 mass % or more of a polyamide (A) having a melting point of 280° C. or higher; and 25 mass % or more of titanium oxide (B). The total content of the polyamide (A) and the titanium oxide (B) is 75 mass % or more.

Abstract: An aramid particle containing a peroxide radical initiator wherein the particle contains 3-40 wt % peroxide radical initiator based on the weight of the aramid particle. Also, disclosed is a particle-elastomer composition having 100 parts by weight of at least one natural or synthetic elastomer, such as rubber; 0.1 to 20 parts by weight of a peroxide or 0.1 to 25 parts by weight of sulfur, an amount of a sulfur donor providing the equivalent of 0.1 to 25 parts by weight of sulfur, or a mixture of sulfur and a sulfur donor to an equivalent total of 0.1 to 25 parts by weight of sulfur; and 0.1 to 20 parts by weight of the aramid particle.

Abstract: The present invention provides a polyamide composition for a reflector having high heat resistance and good mechanical properties, having excellent adhesion to a sealing material for an LED package, and capable of retaining a high reflectance even after exposure to heat and light intended for the production process of the LED package and the environment in which the reflector is used in the LED package, when it is molded. The present invention is a polyamide composition for a reflector, containing: 30 mass % or more of a polyamide (A) having a melting point of 280° C. or higher; and 25 mass % or more of titanium oxide (B). The total content of the polyamide (A) and the titanium oxide (B) is 75 mass % or more.

Abstract: In one aspect, a water soluble binder composition, a method of producing the same and an electrode for a rechargeable battery employing the same is provided.

Abstract: An object of the present invention is to provide a copolymer polyamide which has excellent strength, high-temperature strength, low water absorbance, low blocking properties, releasability and plasticizing time stability, and a copolymer polyamide composition which has excellent vibration fatigue characteristics, surface appearance and continuous productivity. A copolymer polyamide of the present invention is obtained by polymerizing (a) at least one alicyclic dicarboxylic acid, (b) one diamine having 8 or more carbon atoms, and (c) at least one copolymer component selected from the group consisting of the following (c-1) to (c-3): a (c-1) dicarboxylic acid other than the alicyclic dicarboxylic acid; a (c-2) diamine having fewer carbon atoms than the (b) diamine; and a (c-3) lactam and/or aminocarboxylic acid, and the copolymer polyamide satisfies specific conditions.

Abstract: A method of applying a barrier coating to a component is provided. The method includes providing the component and preparing a slurry comprising a mixture. The mixture includes about 50-90 percent by volume fraction of a barrier coating composition, the barrier coating composition and 10-50 percent by volume fraction of a plurality of short fibers. The method includes applying at least one layer of the slurry to at least a portion of the component and curing the slurry on the portion of the component to obtain a fiber-reinforced barrier coating.

Abstract: Disclosed is a thermoplastic composition including (A) a polyamide resin independently selected from the group consisting of Group (I) Polyamides having a melting point of at least 260° C., and comprising (a) greater than 95 mole percent semiaromatic repeat units and (b) less than 5 mole percent aliphatic repeat units; (B) 0 to 60 weight percent of one or more reinforcement agents; and (C) 0 to 50 weight percent of one or more a polymeric tougheners; wherein the weight percentages are based on the total weight of said thermoplastic composition; and wherein said polyamide resin has at least 50 meq/Kg of acid ends.

Abstract: A semi-aromatic polyamide film including a semi-aromatic polyamide resin including a dicarboxylic acid mainly composed of terephthalic acid and a diamine mainly composed of an aliphatic diamine having 9 carbon atoms, wherein a number density of fish-eyes of 0.01 mm2 or more in size present in the film is 100/1000 cm2 or less.

Abstract: Disclosed are a novel ionic organic compound and a method for producing the ionic organic compound by a simple process. Also disclosed are a hydrogelling agent composed of an ionic organic compound obtained by the method, an alcohol gelling agent, a gel which uses the gelling agent, while using water or methanol as a medium, and a carbon nanotube dispersant composed of the compound. Specifically disclosed is an ionic organic compound represented by general formula (1). The compound is obtained by a condensation reaction of (A) an aromatic diamide compound or cyclohexane diamide compound having a 4-(chloromethyl)benzamide group at both ends, and (B) a compound selected from N,N,N?,N?-tetramethylalkylenediamines which may have a substituent wherein there are 1-6 carbon atoms between nitrogen atoms. The thus-obtained ionic organic compound serves as a gelling agent which is capable of gelling a neutral aqueous solution or an alcohol.

Abstract: A copolymer containing polyether (PE) block(s) and polyamide (PE) block(s) issued for the manufacture of a transparent article having high-velocity impact resistance, and impact strength. In said copolymer: PA blocks comprise more than 50 mol % of an equimolar combination of at least one cycloaliphatic diamine and of at least one aliphatic dicarboxylic acid having from 12 to 36 carbon atoms, represent 20 to 90% by weight, out of the total weight of the copolymer, have a number-average molecular weight of 1000 to 10 000 g/mol, and the PE blocks represent 10 to 80% by weight, out of the total weight of the copolymer, and have a number-average molecular weight of 200-1000 g/mol.

Abstract: An article including a polymer element including a polymer, and inorganic particles having a concentration gradient which decreases in concentration from at least one surface of the polymer element to the inside thereof, wherein the inorganic particles have a refractive index that is greater than or equal to the refractive index of air and less than the refractive index of the polymer.

Abstract: The disclosures herein relate to a polymer such as nylon 66, having low yellowness and excellent whiteness retention for applications in melt extrusion and injection molding where an increase in molecular weight is not desirable. The polymer is prepared with a phosphorus compound content, e.g., a sodium hypophosphite (SHP) content, in an amount of 150 to 300 ppm by weight. The presence of an “end cap” additive such as one selected from acetic acid, propionic acid, benzoic acid, or succinic acid, added at the start of polymerization, effectively mitigates undesired molecular weight gain.

Abstract: The present invention relates to stain- or dye-resistant light colored articles comprising a polymer composition (C) comprising a semi-aromatic polyamide comprising recurring units resulting from the condensation of terephthalic acid, isophthalic acid and at least one aliphatic diamine comprising 6 carbon atoms, a filler and from 0.1 to 35 wt. % of a white pigment, based on the total weight of the polymer composition (C).

Abstract: Disclosed is a polyamide composition including at least one semi-aromatic copolyamide, said semi-aromatic copolyamide consisting essentially of 40 to 60 mole percent repeat units of the formula —C(O)(CH2)4C(O)NHCH2ArCH2NH—??(I) and 40 to 60 mole percent repeat units of the formula —C(O)(CH2)4C(O)NH(CH2)6NH—??(II) wherein Ar is a meta-substituted benzene ring. Also disclosed are molded articles including the polyamide composition.

Abstract: A zinc electroplating bath includes zinc ions and a brightening agent. The brightening agent is a polyamine or a mixture of polyamines that include a quaternary ammonium group.

Abstract: The invention relates to a semi-aromatic polyamide, and a polyamide composition comprising the semi-aromatic polyamide, comprising a diamine component (a) comprising, based on the total number of moles of the diamine component (a): between 5 and 30 mole % of at least one C2-C5 diamine, between 5 and 30 mole % of at least one C7+ diamine, and between 45 and 90 mole % of a C6 diamine; and a dicaboxylic acid component (b) comprising, based on the total number of moles of the dicaboxylic acid component (b): at least 50 mole % of terephthalic acid and at most 50 mole % of another dicarboxylic acid.

Abstract: The present disclosure provides a halogen-free thermosetting composition including a benzoxazine compound, a monobenzoxazine monomer, and a naphthalene epoxy. The halogen-free thermosetting composition is especially suited for use in aerospace, automobile, rail and marine applications.

Abstract: The present invention relates to biodegradable polymers (e.g., polyesters and polyester amides) derived from functionalized biologically active compounds that can provide site specific delivery of bioactive compounds upon biodegradation in a controlled manner.

Abstract: Coatings for an implantable medical device and a method of fabricating thereof are disclosed, the coatings including block-polymers comprising at least one poly(hydroxyacid) or poly(hydroxy-alkanoate) block, at least one block of a biologically compatible polymer and at least one type of linking moiety.

Abstract: Through the use of an improved iron-based redox system it is possible to prepare special new, optionally hydrogenated, nitrile rubbers which feature a more uniform monomer distribution and a lower fraction of long-chain branches and hence are distinguished by enhanced flow properties at the same time as very good properties on processing.

Abstract: [Problem to be Solved] A main object of the present invention is to provide a polyamide and a polyamide composition capable of rendering good surface appearance stability and outstanding impact resistance properties to a molded article even when molded under rigorous molding conditions. [Solution] The present invention is (A) a polyamide comprising (a) a unit comprising adipic acid and hexamethylenediamine and (b) a unit comprising isophthalic acid and hexamethylenediamine, wherein a ratio of the isophthalic acid component to the total carboxylic acid component in the polyamide is 0.05?(x)?0.5 and a range of blocking ratio (Y) is ?0.3?(Y)?0.8. Also, the polyamide composition of the present invention contains 30 to 95% by mass of the above polyamide and 5 to 70% by mass of (B) an inorganic filler.

Abstract: Disclosed is a copolyamide including at least two repeat units selected from the group consisting of structures (I) to (IV), —C(O)(CH2)10C(O)NH(CH2)nNH—??(I); —C(O)(CH2)12C(O)NH(CH2)nNH—??(II); —C(O)(CH2)14C(O)NH(CH2)nNH—??(II); and —C(O)(CH2)16C(O)NH(CH2)nNH—??(IV); and n is an integer selected from 4, 6, 10 or 12; wherein at least one repeat unit is selected from structures (I) and (II); and any one the repeat units may be present up to about 92 mole percent. Also disclosed is a process for providing the copolyamide; and thermoplastic compositions and tubing including the copolyamides.

Abstract: Disclosed is a copolyamide including 8 to 92 mole percent repeat units of the formula —C(O)(CH2)14C(O)NH(CH2)nNH—??(I) and 8 to 92 mole percent repeat units of the formula —C(O)(CH2)16C(O)NH(CH2)nNH—??(II) wherein n is an integer selected from 4, 6, 10 and 12; thermoplastic compositions including the copolyamide; and molded and extruded articles prepared from the thermoplastic compositions.

Abstract: Disclosed is an active energy ray-curing composition containing an active energy ray-curing prepolymer (A) obtainable by a reaction of an acrylic-based prepolymer having a hydroxyl group and an acrylic monomer (a4) having an isocyanate group, an active energy ray-curing compound (B) having a benzotriazole group, another active energy ray-curing compound (C) differing from the (A) component and the (B) component, and inorganic oxide particles (D). The acrylic-based prepolymer having the hydroxyl group is a copolymer that includes an acrylic monomer (a1) having a piperidinyl group, an acrylic monomer (a2) having a hydroxyl group, etc., as monomer units.

Abstract: A polyamide resin comprising a dicarboxylic acid constitutional unit comprising an adipic acid unit and a diamine constitutional unit comprising a pentamethylenediamine unit and a hexamethylenediamine unit wherein a weight ratio of the pentamethylenediamine unit to the hexamethylenediamine unit being in the range of 95:5 to 60:40; a vibration-welded molded product having an excellent vibration welding strength, a hinged molded product and a binding band having an excellent low-temperature toughness, and a filament having an excellent transparency which are obtained from the polyamide resin; and a hinged molded product comprising a polyamide resin constituted of an adipic acid unit and a pentamethylenediamine unit.

Abstract: An aqueous coating composition for blocking stains and a method of using the coating composition are described. The coating composition includes an aqueous dispersion of a co-polymer that is derived from an emulsion polymerization of an ethylenically unsaturated non-ionic monomer, an ethylenically unsaturated monomer with a functional acid group having a pKa of 2 or greater or salt thereof, and an alkyl amide.

Abstract: The invention relates to a semiaromatic polyamide, to the process for preparing same, to a composition comprising such a polyamide and to the uses thereof. This polyamide consists of 70 to 95 mol % of a first repeating unit obtained from the polycondensation of at least one first linear or branched aliphatic diamine comprising from 10 to 36 carbon atoms and of at least one aromatic dicarboxylic acid, and of 5 to 30 mol % of a second repeating unit obtained from at least one lactam and/or from at least one aminocarboxylic acid comprising from 9 to 12 carbon atoms.

Abstract: The invention relates to amino(meth)acrylates obtained from the reaction of amines with a mixture of urethane(meth)acrylates and (meth)acrylated diluent sand their use for making coatings, adhesives, varnishes and inks. The amino(meth)acrylates of the invention are particularly suited for use in sealer compositions for parquet and laminate floors.

Abstract: There are provided an ink set, printed matter, and a molded article, with which a first ink and a second ink are applied over a substrate in the form of a sheet, for example, and which lends itself well to processing of this coated surface. An ink set 10 includes first inks 1Y, 1C, 1M, and 1K containing a pigment as a colorant, and a second ink containing no pigment. Films of the first inks 1Y, 1C, 1M, and 1K each stretch at least 70% when cured into the film with a thickness of 5 ?m and the film is stretched under a 150° C. environment. A film of the second ink has an elastic modulus of no more than 200 MPa when the second ink is cured into the film with a thickness of 50 to 200 ?m.

Abstract: Polyamide molding composition, in particular for use for components of electronic and/or electrical components, having the following composition: (A) 30-100% by weight of a partially aromatic, partially crystalline copolyamide made up of 100% by weight of diacid fraction composed of: 72.0-98.3% by weight of terephthalic acid (TPA) and/or naphthalenedicarboxylic acid; 28.0-1.7% by weight of isophthalic acid (IPA) and 100% by weight of diamine fraction composed of: 51.0-80.0% by weight of 1,6-hexanediamine (HMDA); 20.0-49.0% by weight of aliphatic, unbranched C9-C12-diamine; (B) 0-70% by weight of fillers and reinforcing materials; (C) 0-25% by weight of flame retardants; (D) 0-5% by weight of additives; where the components (A)-(D) add up to 100% by weight.

Abstract: Polyamide terpolymer compositions, which contain biobased monomers and are suitable for making shaped articles, are disclosed. Comprised of three monomeric species polymerized randomly, including hexamethylene diamine, adipic acid and a bio-based monomer, the compositions are easier to process and have better dye uniformity than polyamides formed from melt-blended biobased components, and are comparable in dyeability, color fastnessand appearance retention performance to non-biobased polyamide copolymers.

Abstract: Pigment based inks are provided. The inks include a non-polar carrier fluid; and a surface-functionalized pigment particle including a nitrogen-inked moiety to the surface of the pigment particle through a nitrogen link at one end of the nitrogen-linked moiety and a block copolymer having at least two blocks attached at another end, the pigment particle suspended in the non-polar carrier fluid. A combination of an electronic display and an electronic ink employing the pigment and a process for making the pigment-based inks are also provided.

Abstract: A polyamide block copolymer that includes a first segment including a repeating unit represented by Chemical Formula 1, a repeating unit represented by Chemical Formula 2, or a combination thereof; and a second segment including a repeating unit represented by Chemical Formula 3. The variables R1 to R15, and n1 to n8 are defined herein.

Abstract: Supramolecular polymers having repeat units connected by hydrogen bonds, where the repeat units are monomers, macromers, oligomers or polymers where at least one on the monomers contains at least one 2,5-diketopiperazine group are described. Composition prepared from these supramolecular polymers and articles produced from these compositions are also described.

Abstract: A new process is provided for preparing nitrile rubbers by free-radical polymerization in an organic solvent and in the presence of specific modifier substances. This polymerization may be followed by hydrogenation to give likewise new hydrogenated nitrile rubbers, the hydrogenation advantageously taking place likewise in organic solvent. The optionally hydrogenated nitrile rubbers obtained are notable for having fragments of the employed modifier substances in the main polymer chain and/or as end groups. They can he prepared with a wide diversity of molecular weights and polydispersity indices, especially with very low polydispersity indices.

Abstract: The invention provides a tow prepreg having improved productivity and performance. In various embodiments, the tow prepreg has 90% or more resin impregnation and a FAW greater than 600 g/m2. A method of making the prepreg by impregnating each continuous reinforcement fiber strand with a thermosetting resin is also disclosed. In various embodiments, the resin is applied to the reinforcement fiber while flattening the fiber between heated rollers positioned in parallel to each other.

Abstract: A thermosetting solution composition composed of a biphenyltetracarboxylic acid compound containing a partial lower aliphatic alkyl ester of 2,3,3?,4?-biphenyltetracarboxylic acid and/or a partial lower aliphatic alkyl ester of 2,2?,3,3?-biphenyltetracarboxylic acid, an aromatic diamine compound in a molar amount larger than a molar amount of the biphenyltetracarboxylic acid compound, a partial lower aliphatic alkyl ester of 4-(2-phenylethynyl)phthalic acid compound in a molar amount as much as 1.8-2.2 times a molar amount corresponding to a difference between the molar amount of the aromatic diamine compound and the molar amount of the biphenyltetracarboxylic acid compound, and an organic solvent composed of a lower aliphatic alcohol is of value for manufacture of a prepreg.

Abstract: Semiaromatic, semicrystalline copolyamide molding compositions, comprising A) from 35 to 100% by weight of a copolyamide composed of a1) from 35 to 69% by weight of units which derive from hexamethylenediamine and from an aromatic dicarboxylic acid having from 8 to 16 carbon atoms, a2) from 31 to 65% by weight of units which derive from 3,3?-dimethyl-4,4?-diaminodicyclohexylmethane and from terephthalic acid, a3) from 0 to 30% by weight of units of a semicrystalline polyamide different from a1) and a2), B) from 0 to 65% by weight of further additives, where the total of the percentages by weight of A) and B) is 100%.

Abstract: One aspect of the present invention relates to the use of a polyamide as a binder for printing inks, wherein the polyamide is a reaction product (P) of (1) one or more compounds which are chosen from the group of primary and/or secondary monoamines and polyamines with (2) a dimer fatty acid and (3) a carboxylic monoacid, with the proviso that the dimer fatty acid (2) building block of (P) contains at least 30% by weight of monomer fatty acid.

Abstract: The present invention relates to a bituminous composition comprising at least one bitumen and at least one polycondensate capable of forming a supramolecular assembly comprising one or more associative group(s). The present invention also relates to the use of such bituminous composition for the preparation of asphalt mixtures useful for the coating of rolling surfaces, for the preparation of water-proofing coatings, and the for the preparation of adhesive formulations.

Abstract: The invention relates to new ?-hydroxyalkylamides, to a method for production of same and to the use of same.