Asahi Kasei Kogyo Kabushiki Kaisha

Sumio Ueda

Sadao Ibe

Kunio Fukuda

Kazuo Yoshida

Hiroshi Harada

Koji Kasai

Akihiro Kanayama

A novel thermoplastic resin polymer comprising a polyphenylene ether (POE) and a low molecular weight styrene polymer bonded to the PPE in an amount of from 0.1 to 5.0% by weight based on the PPE has been found to have excellent moldability and thermal stability properties, while maintaining the excellent properties inherent in PPE, such as transparency and heat resistance. The resin polymer can be prepared from a polyphenylene ether and a styrene monomer by polymerization in the absence of a radical polymerization initiator. When the novel thermoplastic resin polymer and a styrene polymer are blended into a composition, the composition is particularly excellent in physical properties, such as moldability, color tone, impact resistance, elongation and surface gloss.

Thermoplastic resin polymer having improved moldability and heat

Stabilized polyphenylene ether resin and process for the preparation of

A thermoplastic resin composition substantially constituted of (A) 25 to 70% by weight of a polyamide, (B) 25 to 70% by weight of a polyphenylene ether and (C) 2 to 25% by weight of a block copolymer having at least one polymer block mainly comprised of a vinyl aromatic compound and at least one polymer block mainly comprised of a conjugated diene compound having the content of the vinyl aromatic compound in the range of 25 to 85% by weight; wherein the polyamide forms a continuous phase, and, in the continuous phase, the polyphenylene ether is dispersed to form a dispersed phase having an average particle diameter ranging from 0.5 to 10 .mu.m, and further, substantially all of the block copolymer is micro-dispersed in the dispersed phase of the polyphenylene ether. The composition is widely used as outerplate materials or wheel caps of automobiles, as electrical or electronical parts, especially the various connectors which are used in automobiles, etc.

Thermoplastic resin composition

A polyphenylene ether resin composition comprising a polyphenylene ether resin and a rubber modified resin, said rubber modified resin containing a discontinuous elastomeric rubber phase dispersed in a continuous resin phase comprising a copolymer of a vinyl cyanide compound and a vinyl aromatic compound or a mixture of a homopolymer of a vinyl aromatic compound and a copolymer of a vinyl cyanide compound and a vinyl aromatic compound, said elastomeric rubber phase comprising a grafted elastomeric rubber which has a graft phase of a copolymer of vinyl cyanide compound and a vinyl aromatic compound and having a grafting degree of 35 to 300% by weight, the contents of vinyl cyanide compound in the graft phase and resin phase being 12 to 30% by weight and 3 to 10% by weight, respectively. The polyphenylene ether resin composition of the present invention is excellent in solvent resistance and colorability as well as impact strength.

Polyphenylene ether resin composition

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Chiba, Japan

Sumio Ueda