Very highly stretched polytetrafluoroethylene and process theref

Details Very highly stretched polytetrafluoroethylene and process theref Very highly stretched polytetrafluoroethylene and process theref

1973-06-14

1976-06-08

Turer, Richard B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25M, 260 25E, 264 41, 264210R, 264288, 264290R, 428398, 428422, 526255, C08J 900, B29D 2700

Patent

active

039621537

ABSTRACT:
This invention provides a tetrafluoroethylene polymer in a porous form which has an amorphous content exceeding about 5% and which has a micro-structure characterized by nodes interconnected by fibrils. The material has high porosity and high strength. It can be used to produce all kinds of shaped articles such as films, tubes, rods, and continuous filaments. Laminations can be employed and impregnation and bonding can readily be used to produce a large variety of articles. Compressed articles of very high strength can also be produced from these porous forms.

REFERENCES:
patent: 2915786 (1959-12-01), Haroldson et al.
patent: 2953428 (1960-09-01), Hunt et al.
patent: 3786127 (1974-01-01), Peet et al.

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