Aramid block copolymers

Details Aramid block copolymers Aramid block copolymers

1991-10-29

1993-05-18

Carrillo, Anal

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

Synthetic resins

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

525420, 528324, 528335, C08L 7710

Patent

active

052122581

ABSTRACT:
Aramid block copolymers which contains blocks whose polymer chains are flexible, and blocks whose polymer chains are flexible in solution and in undrawn polymer, but relatively rigid in drawn polymer, are disclosed. The aramids are tough materials with high modulus and tensile strength. Also disclosed is a process for making such block copolymers. The copolymers are useful as fibers and films, for example in ropes and composites.

REFERENCES:
A. Ya. Yakubovich, et al., Vysokomol. Soyed., vol. A14, pp. 1838-1842 (1972), W. R. Krigbaum et al.
J. Polym. Sci., Part A, Polym. Chem., vol. 25, pp. 653-667 (1987), W. R. Krigbaum et al.
J. Polym. Sci., Part B, Polym. Phy., vol. 25, pp. 1043-1055 (1987), W. R. Krigbaum et al.
Polym. J., vol. 20, pp. 83-91 (1988), W. R. Krigbaum et al.
J. Polym. Sci., Part C, Polym. Lett., vol. 27, pp. 59-63 (1989), W. R. Krigbaum et al.

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