Polyamide/aliphatic polyester block copolymer, process for the p

Details Polyamide/aliphatic polyester block copolymer, process for the p Polyamide/aliphatic polyester block copolymer, process for the p

1995-05-25

1997-11-25

Woodward, Ana

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 92A, 525394, 525397, 525420, 525425, 525432, C08L 7700

Patent

active

056914121

ABSTRACT:
A polyamide/aliphatic polyester block copolymer (A) comprising a polyamide block and an aliphatic polyester block, (B) satisfying the expression, T.sub.1 -T<100-C (in which T is the melting point (.degree.C.) of the above block copolymer, T.sub.1 is the melting point (.degree.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).times.0.4 (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.degree. 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.

REFERENCES:
patent: 3554983 (1971-01-01), Goodman et al.
patent: 3758631 (1973-09-01), Werner et al.
patent: 4588785 (1986-05-01), Bax et al.
patent: 5093437 (1992-03-01), Komiya et al.

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