公开(公告)号：US20170275774A1

公开(公告)日：2017-09-28

申请号：US15503735

申请日：2015-10-19

Applicant: Atotech Deutschland GmbH

Inventor： Michal KACZMAREK ,  Antje RICHTER ,  Lukas BEDRNIK ,  Eric SIBÜRGE

IPC: C25D3/22 ,  C25D3/56

CPC classification number: C25D3/22 ,  C25D3/565

Abstract: The present invention relates to an acidic zinc or zinc-nickel alloy plating bath composition comprising a source for zinc ions, optionally a source for nickel ions, a source for chloride ions and at least one dithiocarbamyl alkyl sulfonic acid or salt thereof. Said plating bath composition and the corresponding plating method result in zinc or zinc-nickel alloy layers having an improved throwing power and thickness distribution, particularly when plating substrates having a complex shape and/or in rack-and-barrel plating.