Asahi Kasei Chemicals Corporation

Asahi Kasei Kogyo Kabushiki Kaisha

Asahi Kasei Kabushiki Kaisha

Yoshikuni Akiyama

Minoru Sakata

Yukihiro Ban

Ken Mizushiro

Toru Yamaguchi

Yoshifumi Araki

Hideo Morita

Tomohiro Kondo

Hiroshi Kamo

Yasushi Kishimoto

Shunichiro I

Yuji Kusumi

Kuniaki Minonishi

Goro Yamamoto

Osamu Shoji

Kaoru c/o Corporate Intellectual Property Toyouchi

The polyphenylene ether according to the present invention includes 5 to 20% by mass of a component having a molecular weight of 50,000 or more and 12 to 30% by mass of a component having a molecular weight of 8,000 or less. The resin composition according to the present invention includes the polyphenylene ether (a) and a hydrogenated block copolymer (b) prepared by hydrogenating a block copolymer including at least two polymer blocks A having a vinyl aromatic compound and at least one polymer block B having a conjugated diene compound, wherein the number average molecular weight (Mnb) of the hydrogenated block copolymer is 100,000 or less, and the number average molecular weight (MnbA) of at least one polymer block of the polymer blocks A is 8,000 or more.

Polyphenylene ether, resin composition, and molded body of resin composition

An object of the present invention is to provide a resin composition in which a surface resistivity and a volume resistivity actually measured in an antistatic region and an electrostatic diffusion region are equivalent to each other, and a remolded product produced by reutilizing a molded product which can hold the above properties. Specifically, disclosed is a resin composition comprising: 100 parts by weight of (a) a thermoplastic resin; 20 to 80 parts by weight of (b) a nonconductive fibrous inorganic filler having an average fiber diameter of not more than 15 &#x3bc;m; and 10 to 70 parts by weight of the total of (c1) a graphite and (c2) a graphite in which (c) graphite having an average particle diameter of 1 &#x3bc;m to 50 &#x3bc;m wherein each kind thereof has a different particle diameter; and at least one of differences in average particle diameter between two kinds thereof is not less than 5 &#x3bc;m.

Resin composition and molded product thereof

It is intended to provide a polymer alloy including a polyphenylene sulfide resin, a polyphenylene ether resin, and a talc, which is excellent in a balance between tenacity (impact strength) and rigidity and in die wear resistance. The present invention provides a resin composition including 45 to 99 parts by weight of a polyphenylene sulfide resin (a), 55 to 1 part(s) by weight of a polyphenylene ether resin (b), 1 to 20 part(s) by weight of a compatibilizer (c) with respect to 100 parts by weight in total of the components (a) and (b), and 20 to 200 parts by weight of a talc (d) having an average particle size of 25 to 100 &#x3bc;m or 20 to 200 parts by weight in total of a talc (d) having an average particle size of 25 to 100 &#x3bc;m and a fibrous filler (e) with respect to 100 parts by weight in total of the components (a) and (b).

Resin composition

This invention provides a polymer alloy comprising a polyphenylene sulfide resin and a polyphenylene ether resin. This polymer alloy can eliminate molding whitening which, upon molding, occurs on the surface of the molded product, can impart excellent surface appearance and flame retardance, and further can improve balance between heat resistance and toughness (impact strength) and mechanical strength. The resin composition comprises 45 to 99 parts by weight of a polyphenylene sulfide resin comprising (a) 0 to 96% by weight of a specific linear polyphenylene sulfide resin and (b) 100 to 4% by weight of a specific crosslinking-type polyphenylene sulfide resin. The resin composition further comprises (c) 55 to 1 part by weight of a polyphenylene ether resin. Further, the resin composition comprises (d) 1 to 20 parts by weight, based on 100 parts by weight in total of components (a) to (c), of a styrene copolymer and/or an ethylene copolymer containing any one functional group of glycidyl and oxazolyl groups.

Polyphenylene sulfide resin composition

A polyphenylene sulfide resin composition including a polyphenylene sulfide resin having a specific amount of oligomers and a specific amount of a functional group, an amorphous thermoplastic resin having a glass transition temperature (Tg) of 120&#xb0; C. or higher, and an additive having a specific amount of a functional group. The moldings obtained from this polyphenylene sulfide resin composition have a good toughness (impact strength) and weld strength. The use of this polyphenylene sulfide resin composition as a material for secondary battery cases makes it possible to maintain the initial electrolytic performance over a long period of time.

The invention relates to a resin composition for a battery case for secondary battery, comprising:

Resin composition for a battery case for secondary battery

An object of the present invention is to provide an agent serving both as a compatibilizer and an impact strength-imparting agent, which is freed from layer separation phenomenon and capable of improving compatibility to a polyphenylene ether and/or a polyolefin without detriment to weld tensile strength and low temperature impact strength. Another object is to provide a resin composition, which is obtained by blending the agent serving both as a compatibilizer and an impact strength-imparting agent with other thermoplastic resin, and which is superior in its impact resistance, particularly impact strength at low temperature, heat resistance and processability. To achieve the above objects, a modified hydrogenated block copolymer having a functional group at the terminal of said hydrogenated block copolymer chain is reacted with a modified polyphenylene ether and/or a modified polyolefin thereby obtaining a resin composition which is containing a graft copolymer formed in a manner such that the hydrogenated block copolymer is grafted to the polyphenylene ether and/or the polyolefin and which has the desired properties.

Resin composition containing graft copolymer

Resin composition and resin composition for secondary battery jar

Disclosed is a shaped resin article comprising (1) a continuous phase of a polyphenylene ether and (2) a dispersed phase dispersed in the continuous phase (1). The dispersed phase comprises (a) a particulate dispersed polyolefin phase which is comprised of a polyolefin and has a minor diameter of not greater than 0.5 .mu.m, the outer surface of the dispersed polyolefin phase (a) having, cohered thereto, particles of at least one copolymer selected from the group consisting of a copolymer of a vinyl aromatic compound and a conjugated diene compound and a hydrogenation product thereof, and (b) a particulate dispersed copolymer phase having a minor diameter of not greater than 0.3 .mu.m, which is comprised of at least one copolymer selected from the above-mentioned group and is dispersed in the continuous phase (1) and not cohered to the dispersed polyolefin phase (a). The shaped resin article has not only remarkably improved weld-line toughness and delamination resistance but also excellent resistance to heat, impact and chemicals.

Shaped resin article comprising polyphenylene ether

A composition having a composition containing substantially no other engineering thermoplastic resin and a compression set (JIS K 6301; 100.degree. C..times.22 hours; and compressibility, 25%) of 65% or less as rubber which comprises:

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Tokyo, Japan

Yoshikuni Akiyama