Method of forming coating film of fluororesin by physical vapor

Details Method of forming coating film of fluororesin by physical vapor Method of forming coating film of fluororesin by physical vapor

1988-03-18

1989-09-05

Childs, Sadie

Coating processes

Coating by vapor, gas, or smoke

Organic coating applied by vapor, gas, or smoke

20419214, 20419215, 20419231, 427255, C23C 1600

Patent

active

048637629

ABSTRACT:
In forming a coating film of a fluororesin, e.g. polytetrafluoroethylene, on a metallic or nonmetallic surface by a physical vapor deposition technique, problems attributed to the necessity of intensely heating or bombarding the fluororesin as the evaporating source or target material are solved by using a molecular weight reduced fluororesin not higher than 5000 in molecular weight. It is best to use a low molecular weight fluororesin powder obtained by heating a high molecular weight fluororesin in presence of a fluorine source and precipitating the molecular weight reduced polymer from the reaction gas.

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