Controlled surface-fluorination process

Details Controlled surface-fluorination process Controlled surface-fluorination process

1983-06-07

1985-01-01

Schofer, Joseph L.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525389, 525390, 525398, 525403, 525410, 525416, 525417, 525418, 525452, 525461, 525471, 525472, 525474, 525480, 525509, 525521, 525523, 525534, 525535, 525538, 525539, 525540, 536 56, C08F 822

Patent

active

044916531

ABSTRACT:
Disclosed is a method for fluorinating the surface of a polymeric solid for improving a surface property of such solid while substantially maintaining the bulk physical properties of said solid. This method comprises contacting the polymeric solid with dilute fluorine gas at a temperature not substantially above about room temperature and at a pressure not substantially above about 1 atmosphere for a time adequate to partially fluorinate said solid surface by forming stable fluorocarbon groups wherein the ratio of --CF.sub.2 -- groups to --CHF-- groups is not substantially above about 1:1, the proportion of oxygen-providing groups presend during said fluorination being restricted to an amount whereby substantially no oxidation of said surface occurs.

REFERENCES:
patent: 2129289 (1938-09-01), Soll
patent: 3758450 (1973-09-01), Margrave et al.
patent: 4020223 (1977-04-01), Dixon et al.
patent: 4076916 (1978-02-01), Lagow
patent: 4142032 (1979-02-01), D'Angelo
patent: 4264750 (1981-04-01), Amond et al.
patent: 4296151 (1981-10-01), Boultinghouse

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