Method of providing friable polytetrafluoroethylene products

Details Method of providing friable polytetrafluoroethylene products Method of providing friable polytetrafluoroethylene products

1997-08-08

1999-04-06

Acquah, Samuel A.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

528483, 528486, 528491, 528493, 528495, 528497, 528499, 528503, 524284, 524356, 524366, 524379, 522 80, 522 84, 522 86, 522 79, B32B 516, C08F 600, C08J 328

Patent

active

058915737

ABSTRACT:
A method is disclosed for providing a friable polytetrafluoroethylene (PTFE) product that has particles of a desired size which are flowable and do not tend to agglomerate. To achieve this result, the PTFE starting material is handled at a temperature below 66.degree. F., and preferably below 55.degree. F., before irradiating. The PTFE starting material may be mixed with a wetting agent before irradiating to provide a product that has enhanced dispersibility. The source of radiation may include electron beam radiation, nuclear radiation, or radiation from a cobalt-60 (CO.sub.60) source.

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