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Title: Procedure for sealing leaks in closed cooling systems

Abstract: Leaks in closed cooling systems containing an aqueous medium as the coolant, are sealed by electroless deposition of a metal or metal containing compound from a water soluble, easily reducible metal compound. A complexing agent may be added to the coolant to assist in solubilizing the easily reducible metal compound. In one embodiment, the reducible metal compound is formed in situ by attacking the conduit walls of the cooling system so as to form solubilized compounds, or compounds which can be solubilized by addition of suitable complexing agents.


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Inventors: Bodmer, Maurice (Nussbaumen, CH)
Hartinger, Edmund (Rutihof-Baden, CH)
Huber, Albert (Moriken, CH)

Application Number: 495511
Filing Date: 1974-08-07
Publication_date: 1976-03-30
Assignee: BBC Brown, Boveri & Company Limited (Baden, CH)
Primary Class(es): 427/142 106/33, 252/72, 422/19, 427/437, 427/438
Other Classes:
US Patent Ref:
3532519Oct, 1970Hirohata et al.117/130.
3709712Jan, 1973Rossman117/2.
3850657Sep, 1972Bodmer et al.427/142.

Other Refs:
Primary Examiner: Kendall, Ralph S.
Assistant Examiner: Buffalow, Edith R.
Attorney: Oblon, Fisher, Spivak, McClelland & Maier