Alcohol-based spin liquids for flash-spinning polymeric plexifil

Details Alcohol-based spin liquids for flash-spinning polymeric plexifil Alcohol-based spin liquids for flash-spinning polymeric plexifil

1992-05-11

1993-10-05

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By extrusion spraying or gravity fall through orifice

264205, 264211, 26421114, D01D 511

Patent

active

052502376

ABSTRACT:
A process is provided for flash-spinning plexifilamentary film-fibril strands of a fiber-forming polyolefin from a C.sub.1-4 alcohol or a C.sub.1-4 alcohol/co-solvent spin liquid that, if released to the atmosphere, presents no or a greatly reduced ozone depletion hazard, as compared to the halocarbon spin liquids currently-used commercially for making such strands. The resulting flash-spun plexifilamentary film-fibril strands are well fibrillated and are of a quality equivalent to commercially available strands. The invention also covers the spin liquids useful in the inventive process.

REFERENCES:
patent: 3081519 (1963-03-01), Blades et al.
patent: 3227784 (1966-01-01), Blades et al.
patent: 3227794 (1966-01-01), Anderson et al.
patent: 4554207 (1985-11-01), Lee
patent: 5032326 (1991-07-01), Shin
patent: 5043108 (1991-08-01), Samuels
patent: 5147586 (1992-09-01), Shin et al.
P. S. Zurer, "Search Intensifies for Alternatives to Ozone-Depleting Halo-Carbons" Chemical & Engineering News, pp. 17-20 (Feb. 8, 1988).
Allowed Application U.S. Ser. No. 07/660,768 (filed Feb. 22, 1991) Shin et al.

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