Method of forming corrosion resistant film on the surface of sub

Details Method of forming corrosion resistant film on the surface of sub Method of forming corrosion resistant film on the surface of sub

1985-05-15

1987-01-06

Lusignan, Michael R.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

148 62, 430287, G03C 1495, G03C 168, G03C 171, G03C 176

Patent

active

046346554

ABSTRACT:
A method of forming a corrosion resistant film for a specified image on the surface of a substrate by adding an aliphatic amine such as ethylenediamine, monoethanolamine, diethanolamine triethanolamine to a sensitizing solution composed of water-soluble high molecular compound and ammonium dichromate so as to adjust pH value of the sensitizing solution in the range of 6.1 to 7.8, applying the prepared sensitizing solution to the surface of a substrate of copper or copper alloy, and undergoing each process of drying, exposure and development. After an etching process being applied to the substrate on the surface of which the corrosion resistant film has been formed, the corrosion resistant film is removed to be a finished goods.

REFERENCES:
patent: 2787546 (1957-04-01), Smith et al.
patent: 4517277 (1985-05-01), Lynch et al.
Luzzi, J. J., Photosensitive Compositions, IBM, vol. 9, No. 4, Sep. 1966.

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