Cleaning and liquid contact with solids – Processes – Using sequentially applied treating agents
Patent
1976-12-27
1978-05-16
Klein, David
Cleaning and liquid contact with solids
Processes
Using sequentially applied treating agents
134 30, 156657, 156668, 252 795, H01L 2330
Patent
active
040897044
ABSTRACT:
Disclosed is a method of removing silicone rubber encapsulating material from micro-electronic circuits. The encapsulant is broken down molecularly and removed by a solution of tetramethyl-ammonium hydroxide which is diluted with an alcohol such as 2-propanol. It was found that this stripping solution causes minimal swelling of the encapsulant and leaves no significant residue which cannot be removed by standard rinsing.
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Rose et al., Ed. The Condensed Chemical Dictionary, 7th ed, Reinhold Publishing Corp., New York, N.Y. (1966), p. 844.
Heiss, Jr. John Herbert
Wylie John Robert
Bell Telephone Laboratories Incorporated
Birnbaum Lester H.
Klein David
Massie Jerome W.
Western Electric Company Inc.
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