Abstract: About 0.001 to 1 part by weight of a phenol component (B1) and/or about 0.001 to 10 parts by weight of an amino acid (B2) are added relative to 100 parts by weight of a polyacetal resin (A) to prepare a polyacetal resin composition. The phenol component (B1) may be a novolak phenol-series resin, a phenol aralkyl-series resin, a polyvinyl phenol-series resin, a polyhydric phenol, a polyphenol, a catechin compound, or a lignin. The amino acid (B2) may be an ?-amino acid, a ?-amino acid, a ?-amino acid, a ?-amino acid, or a derivative of an amino acid. The polyacetal resin composition may further contain an antioxidant, a heat stabilizer, a processing stabilizer, a weather (light)-resistant stabilizer, or a coloring agent. The polyacetal resin composition ensures marked inhibition of formaldehyde emission.

Abstract: About 0.001 to 5 parts by weight of an antioxidant and about 0.001 to 10 parts by weight of a guanamine compound having at least one unit represented by the following formula (1) or a salt thereof relative to 100 parts by weight of a polyacetal resin are mixed and constitute a resin composition. The resin composition may further comprise a processing stabilizer, a heat stabilizer, a weather-resistant stabilizer, a coloring agent, a gloss control agent, an impact resistance improver, a slide improver, a filler, and/or the like. Wherein R1 and R2 are the same or different and each represents a hydrogen atom or an alkyl group, and “m” denotes an integer of not less than 2.

Abstract: A flame retardant comprising a phosphazene compound, a polyphenylene oxide-series resin, and if necessary a styrenic resin and/or a nitrogen-containing compound imparts flame retardancy to a polyalkylene arylate-series resin. The phosphazene compound comprises at least a crosslinked phenoxyphosphazene compound. The obtained polyalkylene arylate-series resin composition shows high flame-retardancy.

Abstract: The present invention is improved in an enhanced impact resistance of a molded article of a PAS resin and continuous molding (mold release improvement) in mass production and adhesion to coating. The present invention provides a polyarylene sulfide resin composition comprising (A) 100 parts by weight of a polyarylene sulfide resin, (B) 1-20 parts by weight of a graft copolymer formed by the branching or crosslinking chemical bond of an olefin-based copolymer (b-1) and at least one polymer or copolymer (b-2), the olefin copolymer (b-1) composed mainly of an ?-olefin and an ?, ?-unsaturated carboxylic acid ester without a glycidyl group, the polymer or copolymer (b-2) constituted of a specific repeating unit, and (C) 1-20 parts by weight of an olefin copolymer composed mainly of an a-olefin and a glycidyl ester of an ?,?-unsaturated carboxylic acid.

Abstract: A flame-retardant resin composition comprises a base resin (e.g., a polyester-series resin), a flame retardant (A) comprising a salt of an amino group-containing triazine compound with a sulfuric acid and/or a sulfonic acid, a flame-retardant auxiliary (B). The flame-retardant auxiliary (B) includes an aromatic resin, acyclic urea-series compound or a derivative thereof [e.g., acetyleneurea, uric acid, a salt of melamine or a condensate thereof (e.g., melam, melem, and melon) with cyanuric acid], an amino group-containing triazine compound (e.g., melamine or a condensate thereof), and/or an inorganic metal-series compound (e.g., a metal salt of an oxygen acid having no sulfur atom, a metal oxide, a metal hydroxide, and a metal sulfide). The present invention provides a flame-retardant resin composition to which flame retardancy is imparted without using a halogen-series flame retardant and an organic phosphorus-series flame retardant.

Abstract: A flame-retardant resin composition comprises 10 to 300 parts by weight of a flame retardant (B) and 1 to 200 parts by weight of an inorganic filler (C) (a glass fiber and/or a glass flake), relative to 100 parts by weight of a base resin (A). The flame retardant (B) comprises a polyphenylene oxide-series resin and/or a polyphenylene sulfide-series resin (B1), a phosphoric ester (B2), and a nitrogen-containing cyclic compound (B3) (for example, a polyphosphate of an amino group-containing triazine compound). The inorganic filler (C) has been treated with a surface-treatment agent or sizing agent containing a novolak epoxy resin. Such a resin composition is useful for obtaining a shaped article which has been inhibited from dripping and to which flame retardancy is highly imparted.

Abstract: It is an object of the present invention to manufacture high quality thermotropic liquid-crystalline polymer generating no low boiling gas and inducing no discoloration resulted from thermal degradation at high yield. To manufacture a liquid-crystalline polymer having 50 mol % or larger ratio of constitutive unit introduced from 4-hydroxybenzoic acid, the reaction is conducted under the presence of an acylating agent and of a catalyst quantity of aromatic sulfonic acid.

Abstract: An object of the present invention is to provide a polyacetal resin composition having excellent friction and abrasion characteristics and having improved mechanical strength. Specifically, there are blended (A1) 100 parts by weight of a polyacetal resin having substantially straight chain molecular structure; (A2) 0.1 to 20 parts by weight of a polyacetal resin having branched or crosslinked molecular structure; and (B) 0.05 to 20 parts by weight of a lubricant oil keeping liquid state at 200° C.

Abstract: The present invention provides a resin-molded component for signal reader, which is light in weight and is able to improve the vibration damping property and to increase the resonance frequency, and which is excellent in heat dissipation. Specifically, it provides a resin-molded component for signal reader structured by 55 to 75% by weight of liquid crystalline polymer (A) composed of structural units expressed by general formulae (I) through (IV): —O—Ar1—CO—??(I) —CO—Ar2—CO—??(II) —O—Ar3—O—??(III) —O—Ar4—CO—??(IV) (where, Ar1 is 2,6-naphthalene group, Ar2 is selected from 1,2-phenylene group, 1,3-phenylene group, and, 1,4-phenylene group, Ar3 is selected from 1,3-phenylene group, 1,4-phenylene group, and p,p?-polyphenylene group, and Ar4 is 1,4-phenylene group); 20 to 10% by weight of inorganic hollow sphere (B1); and 25 to 15% by weight of fibrous inorganic filler (B2), and has 1.4 or smaller specific gravity d, 0.5 W/m·K or larger thermal conductivity ?, and 10 GPa or larger flexural modulus.

Abstract: The present invention provides a polyoxymethylene resin molding which is used with a counterpart of a polyoxymethylene resin or a polybutylene terephthalate resin, and which has excellent friction/abrasion characteristics even in a region of high area pressure and high linear velocity. The polyoxymethylene resin molding is made of a polyoxymethylene resin composition prepared by blending a polyoxymethylene resin with (a) 0.01 to 1.0% by weight (in the composition) of a melamine resin having a particle size of 100 ?m or smaller. The molding is used for a sliding component under a sliding condition (1) or (2) as follows: (1) the counterpart of sliding is a molding made of a polyoxymethylene resin, and the sliding is conducted at a PV value (area pressure×linear velocity) of 1.0 MPa·cm/s or larger; or (2) the counterpart of sliding is a molding made of a polybutylene terephthalate resin, and the sliding is conducted at a PV value (area pressure×linear velocity) of 2.0 MPa·cm/s or larger.

Abstract: The polyacetal resin composition contains about 0.01–10 parts by weight of a glyoxyldiureide compound per 100 parts by weight of polyacetal resin. The glyoxyldiureide compound includes glyoxyldiureide and its derivatives (metal salts etc.). Optionally, about 0.01–10 parts by weight of a basic nitrogen-containing compound is further added. The basic nitrogen-containing compound includes melamine, melamine resin, and polyamide resin. Further, an antioxidant may be further added. The above composition contributes to stability, particularly heat stability, of polyacetal resin and suppression of emission of formaldehyde.

Abstract: The invention is to provide a polymer, having a high affinity to water, is liquid in spite of being a polymer, simultaneously possesses also a thermal stability and is suitably used as a heating medium or a lubricant. It is the polyacetal (co)polymer, being liquid at room temperature, prepared by copolymerizing (A) 75 to 100 mol % of 1,3-dioxolane and (B) 25 to 0 mol % of trioxane and having the total amount of terminal groups of 15 to 300 mmol/kg and an amount of a hemiformal terminal group of 80 mmol/kg or less.

Abstract: A flat yarn of a high strength and a high modulus of elasticity, being excellent in solvent resistance, thermal stability and resistance to bending fatigue is provided. The flat yarn comprises polyoxymethylene copolymer containing 0.5 to 10 moles of specified oxyalkylene units per 100 moles of oxymethylene units in the polymer chain principally comprising repeating oxymethylene units and having a melt index at 190° C. with load of 2160 g of 0.3 to 20 g/10 min.

Abstract: It is a purpose of the present invention to provide a polyacetal resin composition that contains a glass inorganic filler, improves adhesiveness between the glass inorganic filler and the polyacetal resin, and attains excellent mechanical strength. A polyacetal resin composition comprises 100 parts by weight of a polyacetal resin component (A) and 3-200 parts by weight of a glass in organic filler (B), wherein said polyacetal resin component (A) consists of 99.9-80 parts by weight of a polyacetal resin (A1) having hydroxyl groups at 0-20 mmol/kg in the molecule and 0.1-20 parts by weight of a modified polyacetal resin (A2) having hydroxyl groups at 50-2,000 mmol/kg in the molecule.

Abstract: The present invention provides a combined injection molding product including a primary resin molding product (1) and a secondary injection molding product (2), which attain improved adhesion to each other and enhanced air tightness therebetween. The present invention enables selective and local application of compression pressure upon shaping a combined injection molding product by forming, through injection, a secondary resin molding product (2) onto a primary resin molding product (1). The method includes applying a compression pressure on a secondary resin molding product (2) side, to thereby improve adhesion between the primary resin molding product (1) and the secondary resin molding product (2) and air tightness therebetween, wherein portions at which the secondary resin molding product (2) is united with the primary resin molding product (1) with poor adhesion are compressed selectively and locally.

Abstract: The object is to provide a method for manufacturing liquid crystalline resin composition having a hollow filler and a fibrous filler using a common melting-kneading extruder to maintain well-balanced relation between the residual percentages of hollow filler and the fiber length, which balance could not be attained in the prior art. A liquid crystalline resin composition having 5 to 30% by weight of hollow filler and 5 to 30% by weight of fibrous filler is manufactured using a melting-kneading extruder provided with a screw. (1) The liquid crystalline resin is fed from a main feed port located at upstream side in the extruding direction, while a hollow filler and a fibrous filler are fed from a side feed port located at downstream side in the extruding direction.

Abstract: The object is to provide a liquid crystalline polymer material having good moldability, excellent flatness, warp-deformation resistance, and heat-resistance, and securing performance balance. A specified quantity of mica and a fibrous filler is added to a liquid crystalline polyester resin prepared by combining a 2-hydroxy-6-naphthoic acid unit and a 4-hydroxybenzoic acid unit at a specifically limited ratio.

Abstract: To provide a resin composition, in which a liquid crystal polymer is made into fiber in a molded article to exhibit an extremely high reinforcing effect which has not been available yet, and from which a molded article having an excellent mechanical strength can be manufactured in a stable manner. That is, a thermoplastic resin composition, wherein 100 parts by weight in total consisting of 99-50 parts by weight of a thermoplastic polyester resin (A) not forming an anisotropic molten phase and 1-50 parts by weight of a liquid crystal polymer (B) capable of forming an anisotropic molten phase is blended with 0.001-2.

Abstract: The invention provides a polyarylene sulfide resin composition which can be molded with remarkably reduced trouble of mold-deposit and is improved in thermal stability. The composition contains (A) 100 parts by weight of a polyarylene sulfide resin having a nitrogen element content of 0.55 g or less per 1 kg of the resin and (B) 5-400 parts by weight of an inorganic filler.

Abstract: It is an object of the present invention to manufacture high quality thermotrbpic liquid-crystalline polymer generating no low boiling gas and inducing no discoloration resulted from thermal degradation at high yield. To manufacture a liquid-crystalline polymer having 50 mol % or larger ratio of constitutive unit introduced from 4-hydroxybenzoic acid, the reaction is conducted under the presence of an acylating agent and of a catalyst quantity of aromatic sulfonic acid.