C - Chemistry – Metallurgy – 23 – G
Patent
C - Chemistry, Metallurgy
23
G
C23G 5/02 (2006.01) C11D 7/50 (2006.01) C23G 5/024 (2006.01) H05K 3/26 (2006.01)
Patent
CA 2123207
2123207 9311280 PCTABS00022 A non-aqueous cleaning process uses an organic solvent for removing soil or surface contamination from contaminated articles such as printed circuit boards which are cleaned by immersion into a sump compartment of a cleaning tank contaning the organic cleaning solvent. The organic solvent is preferably a hydrocarbon solvent. The cleaned articles, now coated with the organic cleaning solvent, are then disposed in a rinsing sump containing a fluorocarbon based rinsing solvent having an affinity for the organic cleaning solvent. The organic solvent is thus removed from the articles which are then dried without waste water as in a conventional solvent vapor degreasing solvent process.
Basu Rajat S.
Harnish Daniel F.
Ingham Hepburn
Logsdon Peter B.
Nalewajek David
Alliedsignal Inc.
Gowling Lafleur Henderson Llp
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