Flame-treating process

Details Flame-treating process Flame-treating process

1996-09-13

1999-05-04

Kiliman, Leszek

Stock material or miscellaneous articles

Composite

Of polycarbonate

428413, 428421, 4284231, 4284242, 4284255, 428446, 428447, 428451, 4284744, 4284763, 428480, 428483, 428500, 427223, 427314, 4273722, 4273762, 427377, 4273977, B32B 2736, B05D 302

Patent

active

059003170

ABSTRACT:
The present invention provides a method of modifying the surface of a polymeric substrate, e.g., to improve the wettability of the polymer film surface and/or affix silicon-containing structures to the substrate surface, comprising exposing the substrate to a flame. The flame is supported by a fuel and oxidizer mixture that includes at least one silicon-containing compound that functions as a fuel and is in an effective amount for modifying the surface of the polymeric substrate. Also disclosed are substrates with surfaces that are modified by exposing the substrate to a flame that is supported by the process of the invention. Large increases in the ASTM wetting test, e.g., greater than 13 mJ/m.sup.2 over that reported with conventional flame-treating processes, have been observed in polymeric substrates treated according to this invention.

REFERENCES:
patent: 3153683 (1964-10-01), Bryan et al.
patent: 3837891 (1974-09-01), Tietz
patent: 3883336 (1975-05-01), Randall
patent: 4622237 (1986-11-01), Lori
patent: 5002804 (1991-03-01), Kubon et al.
patent: 5385594 (1995-01-01), Kanamori et al.
patent: 5576076 (1996-11-01), Slootman

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