Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1975-02-26
1976-08-24
Husack, Ralph
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427371, 427380, 427385, 427407, 427419, 428480, 428522, 428539, C01B 2536, B32B 2706, B05D 300
Patent
active
039768104
ABSTRACT:
The process of coating an organic polymeric shaped article with aluminum orthophosphate, using an anion compound as a source of aluminum, and topcoating with a polymer is further improved to enhance barrier properties under moist conditions. The aluminum orthophosphate coating is dried to effect no more than a partial cure and the anion concentration is reduced below about 1% of the weight of the solids content of the coating prior to completing the cure. The top-coating may be applied prior to completing the cure and then dried at a temperature to effect a substantially complete cure of the aluminum orthophosphate.
REFERENCES:
patent: 3352424 (1967-11-01), Guebert et al.
patent: 3821014 (1974-06-01), Haskell et al.
patent: 3853588 (1974-12-01), Haskell et al.
patent: 3853591 (1974-12-01), Haskell et al.
E. I. Du Pont de Nemours and Company
Husack Ralph
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