Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Masahiko Nishigaki

Kazuhiko Katayama

Kazushi Hirobe

Satoshi Tonoki

Nobutaka Tani

Hirokazu Nakanishi

Tadashi Osawa

Minoru Nishizawa

Masami Ohnishi

Yosuke Ichikawa

Akira Ohtani

A flame resistant resin composition comprising (a) a synthetic resin, (b) red phosphorus coated with a thermosetting resin and (c) a filler. The coated red phosphorus is useful as a flame retardant for various synthetic resins, particularly thermoplastic polyesters such as polyalkylene terephthalates, and can impart the flame resistance to the resins without impairing heat stability and electric characteristics. The use of the coated rod phosphorus in combination with talc is particularly preferred.

Flame resistant resin composition

A modified polyalkylene terephthalate composition comprising polyalkylene terephthalate and polyoxyalkylene compound having metal salt of organic carboxylic acid. The composition, which can be used as a molding material, has improved workability, high crystallizing rate and excellent mechanical strength.

Modified polyalkylene terephthalate composition

In the suspension polymerization in an aqueous medium of vinyl chloride alone or of a monomer mixture comprising vinyl chloride as a major component and other monomers copolymerizable therewith as a minor component, depositin of polymer scales on the inside surfaces of the polymerization vessel is surprisingly prevented by coating the interior surface of the vessel and auxiliary equipment prior to the polymerization with at least one compound selected from the group consisting of hydroxyhydroquinone and pyrogallol.

Method of polymerizing vinyl chloride

Vinyl chloride monomer, or a monomeric mixture comprising vinyl chloride as a main component and other monomers co-polymerizable therewith in an aqueous reaction medium, is polymerized in a polymerization vessel. All of the surfaces of the inside walls of the vessel and the agitator blades, the baffle plates and the like with which the vessel is equipped, are coated prior to the polymerization with at least one of a specific class of nitrogen-containing aromatic heterocyclic compounds. Not only is the deposition of polymer scale surprisingly reduced, but also the polymer thus obtained has good physical and chemical properties.

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Nishinomiya, Japan

Masahiko Nishigaki