Asahi Glass Company, Limited

Fukuo Kanno

Keiichi Nakaya

Hiroshi Yanase

Takeshi Abe

Masataka Yokota

Kunio Tanaka

Shigeyuki Narisawa

Yasuki Miura

Mitaka Kobayashi

A resin composition which comprises from 50 to 99.5 parts by weight of a polyphenylene sulfide and from 0.5 to 50 parts by weight of a fluorinated resin having a solidification temperature of at least 237&deg; C. when cooled at a cooling rate of 10&deg; C./min after melting in a nitrogen atmosphere at 330&deg; C., and from 0 to 250 parts by weight of a filler, etc. per 100 parts by weight of the two components.

Resin composition

Magnesium hydroxide of a substantially spherical particle form having an average particle size of from 5 to 500 .mu.m and a specific surface area of from 25 to 1 m.sup.2 /g.

Magnesium hydroxide, process for its production and resin composition

A fire retardant polyolefin composition comprising from 40 to 70% by weight of magnesium hydroxide and from 30 to 60% by weight of a polyolefin, wherein from 0.3 to 10% by weight, based on the magnesium hydroxide, of at least one N-hydroxyalkylamide of a higher fatty acid selected from the group represented by the general formulas: ##STR1## where R is a C.sub.11 -C.sub.17 alkyl or alkylene group and R' is C.sub.n H.sub.2n where n is an integer of 1 to 6, is incorporated.

Fire retardant polyolefin composition

An encapsulation of an electronic device is carried out by using a synthetic thermoplastic resin compound having low viscosity in a molding condition which comprises polyphenylene sulfide and a filler at a ratio of 1:4 to 4:1 and a tacky or adhesive polymer at a ratio of 0.1 to 50 wt. parts per 100 wt. parts of polyphenylene sulfide by a transfer molding process or an injection molding process.

Encapsulation of electronic device

A moldable polyphenylenesulfide is obtained by a heat-treatment of a partially crosslinked or noncrosslinked polyphenylenesulfide at a temperature of higher than 290.degree. C. in an atmosphere being substantially absence of oxygen.

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Yokohama, Japan

Fukuo Kanno