Maintaining the effectiveness of a coating composition

Details Maintaining the effectiveness of a coating composition Maintaining the effectiveness of a coating composition

1977-08-15

1980-01-29

Kaplan, Morris

Coating processes

Measuring, testing, or indicating

427345, 427435, B05D 118, B05D 714

Patent

active

041862198

ABSTRACT:
In a process wherein a resinous coating is formed on a ferriferous surface by immersing the surface in an acidic aqueous coating composition prepared from dispersed particles of resin, HF and FeF.sub.3, wherein said composition forms on said surface a resinous coating which increases in thickness the longer the surface is immersed in the composition and wherein as the composition is used to coat additional surfaces, it begins to form thinner coatings or it destabilizes, the improvement comprising maintaining the effectiveness of said composition by adding thereto an oxidizing agent which is effective in oxidizing ferrous iron.

REFERENCES:
patent: 2132883 (1938-10-01), Romig
patent: 3791431 (1974-02-01), Steinbrecher et al.
patent: 3934054 (1976-01-01), Schmeling et al.
Sienko et al. Chemistry, p. 433 (1961).

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