Chemistry: electrical and wave energy – Processes and products
Patent
1985-08-06
1986-06-03
Kaplan, Gerald L.
Chemistry: electrical and wave energy
Processes and products
204 451, 204 55R, 204DIG2, 260512C, C07C14338, C25D 322, C25D 356
Patent
active
045928096
ABSTRACT:
Non-ionic surfactants prepared by reaction of ethoxylated bisphenols and sulfating agents such as sulfamic acid, sulfuric acid and chlorosulfonic acid are employed in metal electroplating baths and processes to increase the useful operating temperature limits of the baths in comparison to those using other non-ionic surfactants. The surfactants are particularly useful as additives in acid zinc electroplating baths, and especially acid zinc electroplating baths either completely devoid of ammonium ion or containing low amounts of ammonium ion.
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Becking Donald H.
Fong Jaan J.
Kaplan Gerald L.
MacDermid Incorporated
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