Method for the production of high strength polyacrylonitrile fib

Details Method for the production of high strength polyacrylonitrile fib Method for the production of high strength polyacrylonitrile fib

1985-05-06

1987-04-21

Silbaugh, Jan

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2642107, 2642108, 264206, 264203, D01F 618

Patent

active

046595295

ABSTRACT:
Polyacrylonitrile (PAN) fiber of high strength (tensile strength.gtoreq.20 g/d) produced from a polymer composed mainly of acrylonitrile (AN) and having a weight average molecular weight not less than 400,000, and a method of producing said fiber characterized by a multistage stretching step and a drying step under particular conditions.

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