Halocarbons for flash-spinning polymeric plexifilaments

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

1991-02-19

1992-01-14

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524463, C08K 502

Patent

active

050811770

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 commerically 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 et al.
patent: 3655498 (1972-04-01), Woodell
patent: 4554207 (1985-11-01), Lee
P. S. Zurer, "Search Intensifies for Alternatives to Ozone-Depleting Halocarbons", Chem. & Eng. News, pp. 17-20 (2/8/88).
Flourocarbon/Ozone Update, "Alternatives to Fully Halogenated Chlorofluorocarbons", The DuPont Development Program, DuPont Bulletin E-90566 (3/87).

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