EP 4379095 A1 20240605 - WHITE TRIVALENT CHROMIUM PLATING BATH AND WHITE TRIVALENT CHROMIUM PLATING METHOD FOR OBJECT TO BE PLATED USING SAME
Title (en)
WHITE TRIVALENT CHROMIUM PLATING BATH AND WHITE TRIVALENT CHROMIUM PLATING METHOD FOR OBJECT TO BE PLATED USING SAME
Title (de)
DREIWERTIGES WEISSES CHROMPLATTIERUNGSBAD UND DREIWERTIGES WEISSES CHROMPLATTIERUNGSVERFAHREN FÜR EIN ZU PLATTIERUNGSENDES OBJEKT DAMIT
Title (fr)
BAIN DE PLACAGE AU CHROME TRIVALENT BLANC ET PROCÉDÉ DE PLACAGE AU CHROME TRIVALENT BLANC D'OBJET À PLAQUER AU MOYEN DUDIT BAIN
Publication
Application
Priority
- JP 2021122970 A 20210728
- JP 2022028711 W 20220726
Abstract (en)
A white trivalent chromium plating bath including a trivalent chromium compound, a complexing agent, a sulfate serving as a conductive salt, a pH buffering agent, and one type or two or more types of sulfur-containing organic compounds represented by the following general formula (I) (in which R represents -H, -NH<sub>2</sub>, -OH, -CH<sub>3</sub>, -(CH<sub>2</sub>)<sub>n</sub>-CH<sub>3</sub>, or -(CH<sub>2</sub>)<sub>n</sub>-COOH, n represents an integer of 1 to 4, and X and Y each independently represent CH<sub>2</sub>, C=O, or C=S), and a white trivalent chromium plating method using the white trivalent chromium plating bath enable a high plating deposition rate in the trivalent chromium plating bath, and provide an appearance suitable for decorative applications.
IPC 8 full level
CPC (source: 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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4379095 A1 20240605; CN 117642528 A 20240301; JP 2023018744 A 20230209; WO 2023008406 A1 20230202
DOCDB simple family (application)
EP 22849467 A 20220726; CN 202280049583 A 20220726; JP 2021122970 A 20210728; JP 2022028711 W 20220726