Nissan Chemical Industries Limited

Teijin Limited

Shunichi Kumazawa

Akira Yanagimoto

Kiyokazu Tsunawaki

Kazumi Tsubaki

Kiyoshi Nawata

Masahiro Shiozaki

Yasuo Takakuwa

A fire-retardant polyester composition comprising a fiber-forming linear polyester having an intrinsic viscosity of at least 0.1 and a fire retardant containing phosphorus and bromine, wherein at least 70 mole % of the polyester consists of a recurring unit of the formula ##STR1## wherein n represents an integer of 2 to 6, and the fire retardant is a copolyphosphonate composed of 1 mole of a recurring unit of the formula ##STR2## wherein Y represents an isopropylidene or sulfonyl group, and R represents a phenyl or benzyl group, and 0.25 to 10 moles of a recurring unit of the formula ##STR3## wherein R represents a phenyl or benzyl group, the proportion of the fire retardant being 1 to 20 parts by weight per 100 parts by weight of the polyester.

Fire-retardant polyester compositions

A flameproof resin composition comprising the admixture of 3 to 30 wt. % of an adduct of 2,4,6-triamino-1,3,5-triazine and 2,4,6-trihydroxy-1,3,5-triazine and/or a tautomer thereof with a linear polyester.

Melamine cyanurate as a flame retardant agent

Growing community of inventors

Ichihara, Japan

Shunichi Kumazawa