Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1978-03-13
1979-10-09
Smith, John D.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
20415919, 20415922, 20415923, 427 36, 427 38, 428482, 428522, B05D 306, C08G 6302
Patent
active
041706633
ABSTRACT:
Hard, mar resistant and abrasion resistant coatings of low gloss are prepared by exposing a coating composition containing an oxygen inhibitable, radiation curable, organic material and an ultraviolet light absorbing pigment to radiation in three stages. In the first stage, the coating composition is exposed to ionizing radiation in an atmosphere containing a cure inhibiting amount of oxygen. In the second stage, it is exposed to ultraviolet light in an atmosphere free of a cure inhibiting amount of oxygen. In the third stage, the coating composition is exposed to ionizing radiation.
REFERENCES:
patent: 3918393 (1975-11-01), Hahn
patent: 3926639 (1975-12-01), Rosen et al.
patent: 3935330 (1976-01-01), Smith et al.
patent: 4025407 (1977-05-01), Chang et al.
patent: 4048036 (1977-09-01), Prucnal
Bruckbauer Gerald J.
Hahn Ernest A.
Murphy, deceased Gary F.
Morris George D.
Page Thurman K.
PPG Industries Inc.
Smith John D.
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