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

1994-02-23

1995-08-29

Carrillo, Ana L.

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

Synthetic resins

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

524323, 524341, 524351, 524352, 524538, 524539, 525425, 525938, C08G 6944, C08G 8100, C08L 7712

Patent

active

054461090

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: 3558568 (1971-01-01), Kobayashi et al.
patent: 5166309 (1992-11-01), Maj et al.
patent: 5340885 (1994-08-01), Clagett et al.
patent: 5378769 (1995-01-01), Mugge et al.

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