Patent ID: 6924032
Filing Date: 2005-08-02
Classification: B32B,C08J,C08K,C09K,D01F,D02G,Y10T

Abstract:
1. A flame retarding polypropylene fiber having a core-sheath structure, wherein a core component is a polypropylene resin containing a phosphoric ester-based flame retardant and a NOR type hindered amine-based stabilizer that has flame retardancy and odor, and a sheath component is a polypropylene resin containing 0.3% by weight or less of the hindered amine-based stabilizer, wherein the total fiber contains 0.5% by weight or more of the phosphoric ester-based flame retardant and 0.4% by weight or more of the NOR type hindered amine-based stabilizer, the fiber strength is 4.0 cN/dtex or more, and the fiber is capable of suppressing the odor that is characteristic of the NOR type hindered amine-based stabilizer.