Additives for electroplating compositions and methods for their

Chemistry: electrical and wave energy – Processes and products

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C25D 356, C25D 360

Patent

active

049235761

ABSTRACT:
Heteroaromatic compounds having at least two nitrogen atoms may be used to regulate consistency of alloy content and of deposit thickness. Modified nonionic surfactants which lack terminal hydroxy groups are used as grain refiners having low tendency to cause foam build-up in electroplating baths. Dioxolanes may be used to produce deposits having, as desired, a white uniform matte, a semi-bright plate, or a mirror bright surface.

REFERENCES:
patent: 4000047 (1976-12-01), Ostrow et al.
patent: 4673470 (1987-06-01), Obata et al.

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