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Kaneka Corporation

Tochigi Kaneka Corporation

Takeshi Ida

Naoshi Marutani

Eiji Aoishi

There is provided a resin magnet material that has excellent flame retardancy, produces only a small amount of toxic substances when ignited, and yields very few molding defects; as well as an electron beam adjustment apparatus in which this resin magnet material is used. To achieve this object, a first invention comprises a flame-retardant resin magnet material obtained by adding (Z) an alnico-based magnetic powder or a ferrite-based magnetic powder to a flame-retardant resin composition that is itself obtained by adding heat-resistant aluminum hydroxide and antimony trioxide to a polyamide resin in the following amounts: (A) per 100 weight parts polyamide resin, (B) X weight parts heat-resistant aluminum hydroxide with a decomposition temperature of 280&deg; C. or higher (where 10 weight parts<X 70 weight parts), and (C) X weight: parts antimony trioxide (where 40 weight parts<X 270 weight parts). A second invention entails further adding zinc borate in a prescribed amount, and a third invention entails adding guanidine sulfamate in a prescribed amount.

Flame-retardant resin magnet material

Provided are non-halogen, flame-resistant, resin materials and resin magnet materials, and also electron beam controllers comprising the resin magnet materials. The resin material comprises (A) a non-halogen resin composition, (B) a metal oxide hydrate, and (C) one or both of antimony trioxide and zinc borate. The resin magnet material comprises those components (A), (B) and C), and (D) a magnetic material. In the electron beam controller, the four-pole and 6-pole convergence magnets and the two-pole purity controller magnets are made of the resin magnet materials.

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Mooka, Japan

Takeshi Ida