Masking compositions and method for applying the same

Details Masking compositions and method for applying the same Masking compositions and method for applying the same

1988-12-16

1990-08-07

Lusignan, Michael

Coating processes

Removable protective coating applied

Metal base

427259, 427327, 4273884, 427409, 427435, 524446, 524519, B65B 3300, B05D 118, B05D 136, B05D 302

Patent

active

049467115

ABSTRACT:
A method, and aqueous emulsion, for coating a metal part with a peelable mask that is resistant to attack by the strong acid and strong base etchants used in chemical milling are disclosed. The method comprises contacting a polyvalent metal cation salt-surfaced part with an anionic emulsion for a time period effective to coat the part. The anionic emulsion includes coalescent rubbery particles and pigment and has a total solids content of at least about 10 weight percent. The weight ratio of pigment to rubbery particles is about 0.1:1 to about 2:1, respectively.

REFERENCES:
patent: 4191676 (1980-03-01), Hall
patent: 4373050 (1983-02-01), Steinbrecher et al.
patent: 4806390 (1989-02-01), Hawker et al.

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