Abstract:
A polyamide resin composition for molded articles to be in contact with high-pressure hydrogen, the polyamide resin composition comprising a blend of a polyamide-6 resin (A) and a polyamide resin (B) which has a melting point, as determined by DSC, that is not higher than the temperature which is higher by 20ºC than the melting point of the polyamide-6 resin (A) and which has a crystallization temperature during cooling, as determined by DSC, that is higher than the crystallization temperature during cooling of the polyamide-6 resin (A), the amount of the polyamide resin (B) being 0.01-5 parts by weight per 100 parts by weight of the polyamide-6 resin (A). The polyamide resin composition can give a molded article which, even when high-pressure hydrogen charging and pressure release are repeated, is inhibited from developing flaws and which has excellent weld properties.
Abstract:
A polyamide resin composition for molded articles to be in contact with high-pressure hydrogen, the polyamide resin composition comprising a blend of a polyamide-6 resin (A) and a polyamide resin (B) which has a melting point, as determined by DSC, that is not higher than the temperature which is higher by 20ºC than the melting point of the polyamide-6 resin (A) and which has a crystallization temperature during cooling, as determined by DSC, that is higher than the crystallization temperature during cooling of the polyamide-6 resin (A), the amount of the polyamide resin (B) being 0.01-5 parts by weight per 100 parts by weight of the polyamide-6 resin (A). The polyamide resin composition can give a molded article which, even when high-pressure hydrogen charging and pressure release are repeated, is inhibited from developing flaws and which has excellent weld properties.
Abstract:
A Cleaning tool for insertion into a optical fibre connector comprises a bar stem 1 and a support for cleaning 2 which is thinner than the bar stem 1 and formed integrally with the bar stem in series in a longitudinal direction. The outside of the support 2 is covered with a cleaning cloth 3 made of ultra fine filament bundle, having a fibre size of 0.1 denier or less. The support and bar stem may be made of polyamide resin and glass short fibre.
Abstract:
The present invention relates to a thermoplastic resin composition which contains a thermoplastic polymer (A) containing a glutaric anhydride-containing component shown in the following general formula (1), where R and R are the same or different and each represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and a rubber-containing polymer compound (B), and satisfies the following conditions of (I) and/or (II), (I) a total light transmittance per 2 mm of the thickness of the thermoplastic resin composition is more than 90%, (II) a weight-average molecular weight of a thermoplastic polymer (A) is from 30,000 to 150,000 and a glass transition temperature is at least 130 DEG C. According to the present invention, a thermoplastic composition having high heat resistance, superior mechanical properties, colorless transparency, optical isotropy and moldability, as well as solvent resistance, is provided.
Abstract:
A cleaning tool for optical fiber connector composed of a bar form stem 1 and a support 2 thinner than the bar form stem 1 in thickness are made of resin integrally in series in the longitudinal direction, and the outside of this support 2 is covered with cleaning cloth 3 made of ultra fine filament bundle having a filament fiber size of 0.1-denier or less.
Abstract:
A polyamide resin composition for a molded article exposed to high-pressure hydrogen contains a polyamide resin (A) including a unit derived from hexamethylenediamine and a unit derived from an aliphatic dicarboxylic acid of 8 to 12 carbon atoms and an ethylene/±-olefin copolymer (B) modified with an unsaturated carboxylic acid and/or a derivative thereof. Provided is a polyamide resin composition that can provide a molded article having excellent flexibility and heat cycle resistance and less likely to suffer failure points despite repeated charging and discharging of high-pressure hydrogen.
Abstract:
The present invention provides: a flame-retardant thermoplastic polyester resin composition which provides a molded article having excellent tracking resistance and excellent mechanical characteristics, while maintaining high flame retardancy; and a molded article which is obtained by molding the flame-retardant thermoplastic polyester resin composition. A flame-retardant thermoplastic polyester resin composition of the present invention contains 1-70 parts by weight of two or more (C) phosphorus-containing flame retardants that are selected from the group consisting of (C-1) condensed phosphoric acid esters, (C-2) phosphazene compounds and (C-3) organic metal phosphinates and 1-90 parts by weight of (D) a nitrogen-containing flame retardant per 100 parts by weight of the total of 50-95 parts by weight of (A) a thermoplastic polyester resin and 5-50 parts by weight of (B) a methacrylic resin.
Abstract:
An object of the present invention is to provide a thermoplastic polyester resin composition having an excellent retention stability and capable of producing a molded article excellent in mechanical properties and heat resistance as well as in long-term hydrolysis resistance; and the molded article. The thermoplastic polyester resin according to the present invention includes 100 parts by weight of a thermoplastic polyester resin (A) and from 0.1 to 10 parts by weight of a biphenyl aralkyl-type epoxy resin or cyclopentadiene-type epoxy resin (B) of a specific type.
Abstract:
[Object] The object is to provide a thermoplastic resin composition having excellent heat resistance, excellent molding processability and excellent impact resistance and especially having excellent flame retardancy and a molded product made of the same. [Solution] A thermoplastic resin composition comprises: 100 parts by weight of a thermoplastic resin including a polylactic acid resin (A); 10 to 50 parts by weight of a flame retardant (B); and 1 to 20 parts by weight of low melting point glass powder (C) having a median diameter (D50) in particle size distribution measurement of not greater than 6 µm and a softening temperature of not higher than 600°C.