Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1978-04-10
1978-10-17
Smith, John D.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
148 22, 228118, 228180R, 228215, 260 37R, 427 58, 427259, 428411, B23K 3522, C08G 7520
Patent
active
041208439
ABSTRACT:
A polysulfone base stop resist material to protect gold thermocompression bonding sites on a circuit module during a solder dipping operation. Along with the thermoplastic, thermostable strippable base of polysulfone, the resist includes a solvent for the polysulfone and a filler which holds the melted polysulfone in place during the solder dipping operation.
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Ameen Joseph G.
Elmore Glenn V.
Peter Anthony E.
International Business Machines - Corporation
Krenzer Cyril A.
Smith John D.
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