Process for making PVP/para-aramid fibers

Details Process for making PVP/para-aramid fibers Process for making PVP/para-aramid fibers

1990-10-30

1992-08-04

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

264184, 2642106, 2642107, 2641208, 26421115, 26421116, 264233, D01F 690

Patent

active

051356872

ABSTRACT:
A process for making fibers of para-aramid and poly(vinyl pyrrolidone) (PVP) comprising agitating a mixture of solvent acid, para-aramid, and PVP, heating the mixture to form a solution, extruding the solution, drawing the extruded solution, passing the stretched solution through an aqueous coagulating bath to form filaments and washing the filaments.

REFERENCES:
patent: 3767756 (1973-10-01), Blades
patent: 3869429 (1975-03-01), Blades
patent: 4224271 (1980-09-01), Tse
patent: 4228218 (1980-10-01), Takayanagi et al.
patent: 4278779 (1981-07-01), Nakagawa et al.
patent: 4622265 (1986-11-01), Yoon et al.
patent: 4721755 (1988-01-01), Maatman

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