Two-step process and composition for cleaning polished surfaces
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United States of America Patent
Stats
-
May 26, 1981
Grant Date -
N/A
app pub date -
Oct 1, 1979
filing date -
Oct 1, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Optical components and highly-polished metal surfaces are cleaned with a first composition comprising 1,1,2-trichloro-1,2,2-trifluoroethane, isopropyl alcohol, dimethylformamide and 2-ethoxyethanol; then, while the surface is still wet with said first composition, a second composition, comprising at least about 85% 1,1,2-trichloro-1,2,2-trifluoroethane and containing less than 10 ppm of non-volatile residues, is applied to rinse the surface; and the surface is permitted to dry.
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Cited Art Landscape
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