C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
204/37
C25D 3/22 (2006.01)
Patent
CA 1100088
SPECIFICATION ABSTRACT OF THE DISCLOSURE Levelling agents for use in zinc electroplating solutions are described comprising thallous ions or a combination of peptone and thiourea. The thallous ions are preferably added to a concentration of at least 1 mg/1 and the peptone-thiourea combination added to a concentra- tion of at least 100 mg/1 peptone and 50 mg/1 thiourea.
248787
Patel Direj V.
Ward John J. B.
Gowling Lafleur Henderson Llp
International Lead Zinc Research Organization Inc.
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