Mixed halocarbon for flash-spinning polyethylene plexifilaments

Details Mixed halocarbon for flash-spinning polyethylene plexifilaments Mixed halocarbon for flash-spinning polyethylene plexifilaments

1990-02-26

1991-08-13

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

264205, 264211, 26421114, D01D 511

Patent

active

050394606

ABSTRACT:
An improved process is provided for flash-spinning plexifilamentary film-fibril strands of polyethylene. A portion of the conventionally used trichlorofluoromethane ("F-11") is replaced with at least one isomer of dichlorotrifluoroethane to reduce the ozone depletion hazard.

REFERENCES:
patent: 3081519 (1963-03-01), Blades
patent: 3227794 (1966-01-01), Anderson et al.
patent: 4554207 (1985-11-01), Lee
P. S. Zwer, "Search Intensifier for Alternatives to Ozone-Depleting Halocarbons", Chemical and Engineering News, pp. 17-20 (2/8/88).
Fluorocarbon/Ozone Update, "Alternatives to Fully Halogenated Chlorofluorocarbons", The Du Pont Development Program, Du Pont Bulletin E-90566 (Mar. 1987).

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