Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Kenichi Yokota

Kazuo Suzuki

Takashi Sakauchi

Shigeo Nishita

A resinous composition having an increased flame retardance is disclosed, which comprises (A) 10 to 60% by weight of a mixture comprising 100 parts by weight of a polyolefin resin, 20 to 60 parts by weight of a halogenated organic flame-retardant agent, 7 to 30 parts by weight of antimony trioxide and 10 to 40 parts by weight of zinc borate hydrate, and (B) 90 to 40% by weight of a magnetic body powder. The compositions are endowed with surprising glowing combustion resistance as well as superior flame combustion resistance.

Resinous composition having an increased flame retardance

A ferrite composition containing a spinel ferrite and a small amount of a polyphenylene sulfide as a binder, which can provide a molding product having a higher initial permeability and excellent thermal, flame and arc resistances. The molding product is prepared by molding the composition at an elevated temperature under pressure. The use of a ferrite mixture of particle groups having different particle size distributions within the particle size range of 100.mu. to 5 mm. is preferred.

Growing community of inventors

Otsu, Japan

Kenichi Yokota