Ultra-high-tenacity polyvinyl alcohol fiber and process for prod

Details Ultra-high-tenacity polyvinyl alcohol fiber and process for prod Ultra-high-tenacity polyvinyl alcohol fiber and process for prod

1984-12-12

1986-07-29

Kendell, Lorraine T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

2642108, 428373, D02G 300

Patent

active

046030832

ABSTRACT:
An ultra-high-tenacity multifilament fiber of polyvinyl alcohol having a degree of polymerization of at least 1500, said filament having a tensile strength of at least 12 g/d and an initial modulus greater than 280 g/d, which is produced by a process for producing an ultra-high-tenacity polyvinyl alcohol fiber which comprises the steps of dissolving polyvinyl alcohol having a degree of polymerization of at least 1500 in a solvent, dry-spinning the resulting polymer solution through a spinneret into an environment of air or inert gas, introducing the dry-spun filaments into a coagulating bath, and drawing the coagulated filaments at a total effective draw ratio of at least 20 times.

REFERENCES:
patent: 4138445 (1979-02-01), Nogi et al.
patent: 4440711 (1984-04-01), Kwon et al.
patent: 4478971 (1984-10-01), Ballard

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