Method of removing contaminants from a surface

Details Method of removing contaminants from a surface Method of removing contaminants from a surface

1982-01-22

1983-05-03

Smith, John D.

Cleaning and liquid contact with solids

Processes

Using sequentially applied treating agents

134 29, 134 40, B08B 3000

Patent

active

043819516

ABSTRACT:
A method of removing contaminants from the surface is disclosed. The method comprises coating the surface with a surface active agent having a first surface energy and into which the contaminants are combined, applying thereover a higher surface energy colloidal sol and then allowing sufficient time for the first surface energy material with the contaminants combined therewith to migrate through the colloidal sol so as to remove the contaminants from the immediate vicinity of the substrate surface. The surface may then be treated by exposing it to an acid or base to remove the migrated surfactant layer thus removing the trace of contaminants.

REFERENCES:
patent: 2957779 (1960-10-01), Bolton
patent: 3011920 (1961-12-01), Shipley
patent: 3532518 (1970-10-01), D'Ottavio
patent: 3554780 (1971-01-01), Miller
patent: 3657003 (1972-04-01), Kinney
patent: 3839083 (1974-10-01), Sihvonen
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patent: 4073981 (1978-02-01), Baron
patent: 4100037 (1978-07-01), Baron et al.
Narcus, "Metallizing of Plastics", Rheinhold Publishing Corp., NY, C-1960.
Air Products Technical Bulletin, entitled "Surfynol.RTM. 400", Jun. 1972. APCI.
Air Products Technical Bulletin, entitled "Surfynol.RTM. 104", Air Products and Chemicals Inc. 1976.

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