Two-step coating process

Details Two-step coating process Two-step coating process

1971-12-08

1976-01-27

Gwinnell, Harry J.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

96115P, 427 53, 427 54, 20415915, 20415919, B44d 150, C09d 358

Patent

active

039353303

ABSTRACT:
Coating compositions are cured by initially treating them for a brief period with ionizing or non-ionizing radiation whereby they are partially cured and then completing the cure by a thermal treatment. This two-step process decreases the amount of volatiles escaping into the atmosphere and it also permits the use of compounds not useful in the past and allows significant improvement in film properties such as adhesion to metal. The initial radiation cure can be with electron beam, ultraviolet mercury lamp, plasma arc or other radiation means; the thermal cure is carried out by any heat means.

REFERENCES:
patent: 2545450 (1951-03-01), Dalton et al.
patent: 3137674 (1964-06-01), Marans et al.
patent: 3450613 (1969-06-01), Steinberg
patent: 3520714 (1970-07-01), Miller
patent: 3535148 (1970-10-01), Ravve
patent: 3551311 (1970-12-01), Nass et al.
patent: 3558387 (1971-01-01), Bassemir et al.
patent: 3625744 (1971-12-01), Juna et al.
patent: 3669796 (1972-06-01), Hall et al.
patent: 3676192 (1972-07-01), Hahn
patent: 3740287 (1973-06-01), Eichhorn
patent: 3772062 (1973-11-01), Shur et al.
patent: 3776729 (1973-12-01), Levy et al.

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