Kiyoshi Shimizu

Bio: Kiyoshi Shimizu is an academic researcher. The author has contributed to research in topics: Fire retardant & Polyester resin. The author has an hindex of 1, co-authored 1 publications receiving 513 citations.

Flame retardant resin composition

Abstract: The present invention provides a flame retardant resin composition excellent in impact resistance, heat resistance, dimensional stability, and flame retardance. That is, it provides a flame retardant resin composition comprising: 100 parts by weight of a thermoplastic resin (A) comprising: 80 to 10% by weight of (A-1) at least one of an aromatic polyester resin and a polyamide resin, 17 to 85% by weight of at least one of a rubber-containing copolymer of a vinyl cyanide and an aromatic vinyl (A-2) and a copolymer of a vinyl cyanide and an aromatic vinyl (A-3) and 3 to 40% by weight of (A-4) at least one of a polyphenylene ether resin and a polyphenylene sulfide resin, 1 to 60 parts by weight of a non-halogen, organic flame retardant (B) and 100 parts by weight or less of a filler (C).

Flame retardant compositions

Abstract: Organic polymer substrates, for example polyolefins such as polypropylene, can be made flame retardant by the incorporation of a mixture of (i) at least one melamine based flame retardant and (ii) at least one flame retardant selected from the group consisting of the organohalogen and phosphorus containing flame retardants. Further optional flame retardants include antimony compounds and sterically hindered amines.

Resin composition and molded article made thereof

Abstract: A resin composition is described that is excellent in strength, impact resistance, heat resistance and moldability, while further allowing for a reduction in the amount of CO2 needed for its production The resin composition includes a styrene-based resin (A), an aliphatic polyester (B) and at least one species selected from a compatibilizer (C) and a dicarboxylic anhydride (D), wherein the compatibilizer is preferably at least one species selected from: (C-1) a methyl methacrylate polymer; (C-2) a vinyl-based polymer to which an epoxy unit or acid anhydride unit is copolymerized; (C-3) a graft polymer in which a methyl methacrylate unit is grafted to a rubbery polymer; and (C-4) a block copolymer having a polylactide segment and a vinyl-based polymer segment

Pressure-sensitive adhesive sheet

Abstract: A pressure-sensitive adhesive sheet contains at least a pressure-sensitive adhesive layer containing an acrylic pressure-sensitive adhesive containing an acrylic polymer composition containing an acrylic polymer as a main component and a tackifier containing a tackifying resin as a main component, wherein reflection rate and attached amount in the fogging test in accordance with German Industrial Standard DIN 75201 are 70% or more and 20 mg or less, respectively In the acrylic pressure-sensitive adhesive which forms the pressure-sensitive adhesive layer, a ratio of components having a molecular weight of 300 or less is preferably 42% by weight or less based on the total amount of solid matter of the acrylic pressure-sensitive adhesive Furthermore, in the tackifying resin in the tackifier, a ratio of components having a molecular weight of 300 or less is suitably 42% by weight or less based on the total amount of solid matter of the tackifying resin

Flame -retardant polyamide composition

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.

Halogen-free flame retarder composition and flame retardant polyamide composition

Abstract: The invention relates to a halogen-free, flame retarder composition for use in a thermoplastic composition, in particular a glassfibre-reinforced polyamide composition, which flame retarder composition contains at least 10-90 mass % phosphinate compound according to formula (I) and/or formula (II) and/or polymers thereof and 90-10 mass % polyphosphate salt of a 1,3,5-triazine compound according to formula (III) and 0-30 mass % olefin copolymer. When used as a flame retarder in glassfibre-reinforced compositions the halogen-free flame retardant composition results in a combination of a V-0 rating according to the UL 94 test of Underwriters Laboratories and excellent mechanical properties. The invention therefore also relates to the use of this flame retarder composition as a flame retarder in a polyamide composition, and a flame retardant polyamide composition that contains the flame retarder composition. The invention also relates to a moulded article containing the flame retardant polyamide composition, and the use thereof in the field of electrical and electronic applications.