| 摘要 |
A polyamide/aliphatic polyester block copolymer (A) comprising a polyamide block and an aliphatic polyester block, (B) satisfying the expression, T1-T<100-C (in which T is the melting point ( DEG C.) of the above block copolymer, T1 is the melting point ( DEG C.) of a polyamide composed of the polyamide block and C is the content (wt. %) of the polyamide block), (C) exhibiting the extraction amount which satisfies the expression, when extracted in tetrahydrofuran, E<(100-C)x0.4 (in which E is the extraction amount (wt. %) when the block copolymer is refluxed in tetrahydrofuran, and C is the content (wt. %) of the polyamide block) and (D) having an intrinsic viscosity, measured at 35 DEG C., in the range of from 0.5 to 5; a process for the production thereof; a fiber formed therefrom; and an intimate blend comprising a thermoplastic resin having no or poor compatibility with polyamide and the block copolymer.
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