Reinforced acrylic fiber and method for making the same

Details Reinforced acrylic fiber and method for making the same Reinforced acrylic fiber and method for making the same

1979-08-01

1981-02-10

Lieberman, Paul

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

Synthetic resins

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

525123, 525131, C08L 7502

Patent

active

042502756

ABSTRACT:
A reinforced acrylic fiber and the method for making the same wherein a diamine selected from the group consisting of ethylene diamine, piperazine, and hexamethylene diamine is reacted with a diisocyanate selected from the group consisting of: ##STR1## in the presence of a spinning dope made up of dimethylacetamide containing 10 to 30 weight percent of acrylic polymer dissolved therein. This reaction forms a polyurea which is present in discrete particles in the spinning dope. The spinning dope containing the polyurea is extruded to form fibers which have good hot-wet properties.

REFERENCES:
patent: 3038876 (1962-06-01), Farago
patent: 3419534 (1968-12-01), Goodman
patent: 3646178 (1972-02-01), Traubel
patent: 4086207 (1978-04-01), Cassandrini
patent: 4093674 (1978-06-01), Tsutsui

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