Polytetrafluoroethylene molding powder from polytetrafluoroethyl

Details Polytetrafluoroethylene molding powder from polytetrafluoroethyl Polytetrafluoroethylene molding powder from polytetrafluoroethyl

1974-06-17

1976-09-21

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

528502, C08F11426, C08F21426

Patent

active

039818535

ABSTRACT:
Polytetrafluoroethylene fine powder is compacted at or near room temperature at a pressure of 8000 psi (562 kg/cm.sup.2) to 50,000 psi (3513 kg/cm.sup.2), followed by partially decompacting the resultant compacted fine powder to a molding powder having an average particle diameter of less than 100 microns.

REFERENCES:
patent: 2573639 (1951-10-01), Coler
patent: 3087921 (1963-04-01), Mathews et al.
patent: 3674762 (1972-04-01), Izumo et al.
patent: 3690569 (1972-09-01), Leverett
Japanese Patent Publication 17460/73, (publication date May 29, 1973), Ukihashi, et al.

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