Showa Denko Kabushiki Kaisha

Showa Denko K.k.

Shiro Kokuryo

Takashi Ueshima

Chutatsu Tsuge

Hiroshi Konuma

Junichi Nakamura

Masaaki Kira

Hiroshi Akiyama

Hiroyasu Kawahara

Fumio Arai

High impact composition of ring-opening polymerization product formed of (A) 100 parts by weight of at least one ring-opening polymerization product selected from the group consisting of (a) ring-opening polymerization homopolymers of norbornene derivatives containing at least one nitrile group or a substituent including said nitrile group, (b) ring-opening polymerization homopolymers of norbornene derivatives containing at least one ester group or a substituent including said ester group, (c) ring-opening polymerization copolymers of combination of said norbornene derivatives, and (d) other ring-opening polymerization copolymers of any of said norbornene derivatives and 50 mol% at most of other unsaturated cyclic compounds; and (B) 0.05 to 10.0 parts by weight of specified metal salts of fatty acids.

High impact composition of ring-opening polymerization product

A flame-resistant composition of (a) a ring-opening polymerization product of a norbornene derivative and (b) a halogen-containing multicyclic compound or bromine-containing aromatic compound. The composition is employed in shaped articles and structural materials which are subjected to flame and heat exposure.

Flame-resistant composition containing a norbornene derivative polymer

High stability composition of ring-opening polymerization product which is formed of (A) 100 parts by weight of at least one ring-opening polymerization product selected from the group consisting of (a) ring-opening polymerization homopolymers of norbornene derivatives containing at least one cyano group, (b) ring-opening polymerization homopolymers of norbornene derivatives containing at least one ester group, (c) ring-opening polymerization homopolymers of norbornene derivatives containing at least one ether group, (d) ring-opening polymerization homopolymers containing at least one N-substituted cyclic imide group, (e) ring-opening polymerization interpolymers of the above-mentioned types of norbornene derivatives, and (f) other ring-opening polymerization copolymers obtained by the ring-opening copolymerization of said various types of norbornene derivatives and 50 mol% at most of other unsaturated cyclic compounds; and (B) 0.01 to 10.0 parts by weight of specified phenolic compounds.

High heat stability composition of ring-opening polymerization product

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Yokohama, Japan

Shiro Kokuryo