Chisso Corporation

Yuji Nakajima

Masahiko Taniguchi

Masayasu Suzuki

Morio Abe

Koji Minamoto

The invention is directed to a crimpable composite fiber having a propylene copolymer is the first component and a polyethylene as the second component.

Potentially crimpable composite fiber and a non-woven fabric using the same

Fibers and fibrous moldings made by using the same

Biodegradable fiber and non-woven fabric

Fibers having an extremely high heat resistance, satisfactory strength and softness as well as good spinning stability are prepared from a propylene-ethylene copolymer having characteristic ethylene chains, an extremely low amount of reverse insertion of propylene monomer units, and a narrow molecular weight distribution.

Fibers and fibrous moldings using the same

The invention provides a thermoplastic resin fiber which forms no dioxin-related compound when oxidized or burned, and is excellent in flame retardancy even when the content of a flame retardant is low. This flame-retardant fiber contains 5 to 15% by weight of a flame retardant having the following general formula (1): ##STR1## where R1 to R5 and R'1 to R'5 are independently Br or Cl with the Br/Cl ratio lying in the range of 100/0 to 40/60, and n is an integer of 2 to 16, and 2 to 8% by weight of antimony oxide as a flame retardant promoter.

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Saitama, Japan

Yuji Nakajima