US 3,953,565 AGranted

Process for producing flame-retardant shaped articles of thermoplastic synthetic resins

AssigneeTokuyama Soda Kabushiki Kaisha

InventorsYukio Mizutani, Kazuo Shikata, Shunichi Nakamura, Michio Yoshimizu

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Abstract

A process for producing flame-retardant shaped articles of thermoplastic synthetic resins is disclosed which process comprises dispersing homogeneously in a thermoplastic synthetic resin an inorganic metal compound and a surfactant, said inorganic metal compound being one capable of forming a hydrate by reacting with a member of the group consisting of water and an aqueous acid solution, forming the resulting composition into a desired shaped article, and thereafter contacting the thus obtained shaped article with a member selected from the group consisting of water and an aqueous acid solution, thereby converting said inorganic metal compound contained in said shaped article to a hydrate.

Claims45

Dependent claims

A process for producing flame-retardant shaped articles of thermoplastic synthetic resins which comprises:

(1) dispersing homogeneously in 100 parts by weight of a thermoplastic synthetic resin 100 - 500 parts by weight of an inorganic metal compound of particle size 0.01 - 500 microns and 0.01 - 500 parts by weight of a surfactant, said inorganic metal compound being one capable of forming a hydrate by reacting with a member of the group consisting of water and an aqueous acid solution;
(2) forming the resulting composition into a desired shaped article;
and (3) contacting the so obtained shaped article with a liquid selected from the group consisting of water and an aqueous acid solution, thereby converting the inorganic metal compound contained in the shaped article to a hydrate.

Dependencies are inferred from the claim text.