Stabilization of sodium/potassium silicate-containing coating ba

Details Stabilization of sodium/potassium silicate-containing coating ba Stabilization of sodium/potassium silicate-containing coating ba

1978-01-09

1978-12-05

Vaughn, Irving

Compositions

Electrolytes for electrical devices

72 42, 252 495, 252397, C10M 110, C10M 302, C10M 502, B21B 4502

Patent

active

041284879

ABSTRACT:
A coating bath containing sodium and/or potassium silicate is stabilized and its useful life prolonged by the additions of sodium or potassium hydroxide in amounts at least substantially equal to that required to compensate for the amounts of CO.sub.2 or CO.sub.3 anions introduced into the bath which, in reacting with the hydroxide formed by the hydrolysis of the silicate to form carbonates, upsets the hydrolysis equilibrium leading to further hydrolysis of the silicate. Similarly, a quantity of hydroxide is added to compensate substantially for other reactive species which significantly affect the hydrolysis equilibrium of the silicate.

REFERENCES:
patent: 4043924 (1977-08-01), Fraver
patent: 4088585 (1978-05-01), Karpen

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