Acrylonitrile spinning solution and process for producing fibers

Details Acrylonitrile spinning solution and process for producing fibers Acrylonitrile spinning solution and process for producing fibers

1987-11-16

1989-05-16

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524566, C08K 520, C08L 902, C08L 5500

Patent

active

048310697

ABSTRACT:
A spinning solution for acrylonitrile polymers is disclosed, which has a viscosity of 30 to 520 poises (at 50.degree. C.) and which comprises an acrylonitrile polymer having a reduced viscosity of not less than 4.0, a solvent, and water, wherein the water concentration and the polymer concentration fall within the range in the drawing surrounded by straight lines connecting point A (1 wt % and 30 wt % respectively), point B (1 wt % and 10 wt % respectively), and point C (10 wt % and 10 wt % respectively). The spinning solution exhibits satisfactory spinnability in spite of its high polymer concentration and provides void-free acrylonitrile fibers having a highly circular cross-section and excellent mechanical strength.

REFERENCES:
patent: 2879242 (1959-03-01), Weinstock, Jr.

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