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AssigneeToray Industries, Inc.
InventorsHiromitsu Ishii, Kentaro Togawa, Sadanori Kumazawa
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A flame-retardant thermoplastic resin composition that has a largely decreased corrosiveness to metals while maintaining a high degree of flame retardancy is provided, which is produced by adding a phosphinic acid salt and a compound having a specific structure to a thermoplastic resin, and molded articles with largely decreased corrosiveness to metals are also provided, so that useful molded articles can be provided as materials for mechanical machine parts, electric/electronic components, and automotive parts. The flame-retardant thermoplastic resin composition includes 65 to 99 wt % of (A) a thermoplastic resin, 1 to 35 wt % of (B) at least one phosphinic acid salt selected from the group of phosphinic acid salt, diphosphinic acid salt, polymer of phosphinic acid salts, and polymer of diphosphinic acid salts, and 0.001 to 0.70 wt % of (C) a compound having a specific, and molded articles produced therefrom.
A flame-retardant thermoplastic resin composition comprising 65 to 99 wt % of (A) a thermoplastic resin;
Dependencies are inferred from the claim text.
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Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59: flame-proofing or flame-retarding additives
Use of organic ingredients: nitrogen-containing compounds
Bound to oxygen and to carbon only: phosphinic compounds, e.g. R2=POR'
Compositions of polyamides obtained by reactions forming a carboxylic amide link in
About 4 years 4 months of term left · ends 24 Feb 2031 (estimated)
This application is the U.S. National Phase application of PCT International Application No. PCT/JP2010/061368, filed Jul. 5, 2010, and claims priority of Japanese Patent Application No. 2009-168416, filed Jul. 17, 2009, and Japanese Patent Application No. 2009-270060, filed Nov. 27, 2009, the disclosures of each of these applications being incorporated herein by reference in their entirety for all purposes.
The invention relates to a flame-retardant thermoplastic resin composition, and particularly relates to a flame-retardant thermoplastic resin composition that comprises a thermoplastic resin containing a phosphinic acid salt and a compound of a specific structure and has a highly improved corrosion resistance to metals.
With excellent characteristics including injection moldability and mechanical properties, polyester and polyamide resins have been used in a wide range of fields such as mechanical machine parts, electric/electronic components, and automotive parts. Being crystalline plastics with high melting points, polyester and polyamide resins require melt-kneading type extruders and injection molding machines with a high operating temperature.
The invention is described in detail below with reference to exemplary embodiments. The invention provides a flame-retardant thermoplastic resin composition containing 65 to 99 wt % of “(A) a thermoplastic resin”.
Usable resins as said “(A) a thermoplastic resin” include: aliphatic polyester resins such as polyolefin resin (low density polyethylene resin, high density polyethylene resin, polypropylene resin), polyester resin, polyamide resin, and polylactic acid; acrylic resins such as polystyrene resin, polyacetal resin, aromatic or aliphatic polyketone resin, polyphenylene sulfide resin, polyether ether ketone resin, polyimide resin, thermoplasticity starch resin, and polymethyl methacrylate resin; and others such as styrene based resin (polystyrene resin, acrylonitrile/styrene resin (AS resin), acrylonitrile/butadiene/styrene resin (ABS resin), acrylonitrile/ethylene/styrene resin (AES resin), acrylonitrile/acrylic/styrene resin (AAS resin), chlorinated polyethylene/acrylonitrile/styrene resin (ACS resin), polyvinyl chloride based resin, polyvinylidene chloride resin, vinyl ester based resin, methyl methacrylate/styrene (MS resin), polycarbonate resin, polyallylate resin, polysulfone resin, polyethersulfone resin, phenoxy resin, polyphenylene ether resin, poly-4-methyl pentene-1, polyetherimide resin, polyvinyl alcohol resin, and thermoplasticity elastomer (polyester elastomers such as polyether ester block copolymer and polyester ester block copolymer; polyamide elastomers such as polyether ester amide block copolymer and polyester amide block copolymer; and polyolefin based elastomers). Polymer alloy resins may also be used, and useful ones include, for instance, polymer alloy resins of polycarbonate resin and ABS resin; polymer alloy resins of polybutylene terephthalate resin, which is a polyester resin, and ABS resin; and polymer alloy resins of polyamide resin and ABS resin.
In particular, polyester resin, polyamide resin, and alloy resins thereof, are preferably used as said (A) a thermoplastic resin because of their high crystallinity.