Composition and method of masking

Details Composition and method of masking Composition and method of masking

1982-10-04

1984-03-20

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524905, 260DIG24, 427259, C08L 118, B05D 132, B05D 500

Patent

active

044382278

ABSTRACT:
A composition and method of application of the composition to produce masks of the type particularly useful in the manufacture of varnished electronic terminals and components is specified. The composition consists of mixing acetone, nitrocellulose, methyl isobutyl ketone (MIBK), arylsulfonamide formaldehyde resin, and tri (b-chloroethyl) phosphate, a fire retardant, under carefully controlled conditions. This masking product is applied, prior to the varnish, on an electronic part and is subjected to heating in the varnish curing oven to about 200.degree. F. whereupon the masking product will carbonize. The resulting carbonized coating is easily removed by brushing to produce a varnish mask where the masking product was applied.

REFERENCES:
patent: 2782127 (1957-02-01), Walker et al.
patent: 3421919 (1969-01-01), Lih
patent: 3502491 (1970-03-01), Orth
patent: 3663278 (1972-05-01), Blose et al.

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