EP 3725920 A1 20201021 - TRIVALENT CHROMIUM PLATING SOLUTION AND METHOD FOR CHROMIUM-PLATING USING SAME
Title (en)
TRIVALENT CHROMIUM PLATING SOLUTION AND METHOD FOR CHROMIUM-PLATING USING SAME
Title (de)
DREIWERTIGE CHROMBESCHICHTUNGSLÖSUNG UND VERFAHREN ZUM VERCHROMEN UNTER VERWENDUNG DERSELBEN
Title (fr)
SOLUTION DE PLACAGE AU CHROME TRIVALENT ET PROCÉDÉ DE PLACAGE AU CHROME L'UTILISANT
Publication
Application
Priority
- JP 2017238232 A 20171213
- JP 2018083550 A 20180425
- JP 2018045593 W 20181212
Abstract (en)
A trivalent chromium plating solution having a high plating deposition rate and being practical is provided with a trivalent chromium plating solution containing a trivalent chromium compound, a complexing agent, potassium sulfate and ammonium sulfate as a conductive salt, a pH buffer, and a sulfur-containing organic compound, containing a carboxylic acid having two or more hydroxy groups and two or more carboxy groups or a salt thereof as the complexing agent, and containing a combination of saccharin or a salt thereof and a sulfur-containing organic compound having an allyl group as the sulfur-containing organic compound.
IPC 8 full level
C25D 3/06 (2006.01)
CPC (source: EP KR US)
C25D 3/06 (2013.01 - EP KR US); C25D 3/10 (2013.01 - EP); C25D 5/14 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3725920 A1 20201021; EP 3725920 A4 20210421; CN 111465719 A 20200728; JP 6951465 B2 20211020; JP WO2019117178 A1 20201217; KR 20200096239 A 20200811; US 2021172081 A1 20210610; WO 2019117178 A1 20190620
DOCDB simple family (application)
EP 18889584 A 20181212; CN 201880080570 A 20181212; JP 2018045593 W 20181212; JP 2019559679 A 20181212; KR 20207017354 A 20181212; US 201816770357 A 20181212