Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1986-01-02
1987-01-06
Page, Thurman K.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427 541, 522 6, 522 94, B05D 306, C08F 800
Patent
active
046346023
ABSTRACT:
Compositions of the invention comprise a radiation sensitive compound having ethylenic unsaturation and at least one moiety selected from the group consisting of a urea moiety, a urethane moiety and mixtures thereof, a radiation insensitive compound having a number average molecular weight of at least about 400 comprising at least about 40 percent, by weight, based on the weight of the radiation insensitive compound, of aromatic ring moieties and having a hydroxyl equivalent weight of between about 200 and 1500 and a crosslinking agent reactive with the hydroxyl groups present in said radiation insensitive compound, said crosslinking agent being selected from the group consisting of an aminoplast resin, a blocked isocyanate and mixtures thereof. The composition is capable of being cured using heat and either ultraviolet light or ionizing radiation. A process for applying and curing the composition of the invention on a substrate is also disclosed.
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Niederst Kenneth W.
Sirkoch Robert J.
Page Thurman K.
Park Barbara J.
PPG Industries Inc.
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