Halocarbons for flash-spinning polymeric plexifilaments

Details Halocarbons for flash-spinning polymeric plexifilaments Halocarbons for flash-spinning polymeric plexifilaments

1990-02-27

1991-06-11

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By extrusion spraying or gravity fall through orifice

264141, 264205, 264211, 26421113, 26421114, 264517, 264518, D01D 511

Patent

active

050230255

ABSTRACT:
An improved process is provided for flash-spinning plexifilamentary film-fibril strands of fiber-forming polyolefin from a small group halocarbon liquids that, if released to the atmosphere, present a greatly reduced ozone depletion hazard, as compared to the halocarbon currently-used commercially for making the strands. The preferred halocarbon for this purpose is 1,1-dichloro-2,2,2-trifluoroethane.

REFERENCES:
patent: 3081519 (1963-03-01), Blades et al.
patent: 3169899 (1965-02-01), Steuber
patent: 3227794 (1966-01-01), Anderson
patent: 3655498 (1972-04-01), Woodell
patent: 4554207 (1985-11-01), Lee
P. S. Zurer, "Search Intensifies for Alternatives to Ozone-Depleting Hydrocarbons", Chemical & Engineering News, pp. 17-20 (Feb. 8, 1988).
Fluorocarbon/Ozone Update, "Alternatives to Fully Halogenated Chlorofluorocarbons", The Du Pont Development Program, Du Pont Bulletin E-90566 (Mar. 1987).

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