EP 3241928 B1 20211110 - TRIVALENT CHROMIUM PLATING FORMULATIONS AND PROCESSES
Title (en)
TRIVALENT CHROMIUM PLATING FORMULATIONS AND PROCESSES
Title (de)
DREIWERTIGE CHROMPLATTIERUNGSFORMULIERUNGEN UND VERFAHREN
Title (fr)
FORMULATIONS ET PROCÉDÉS DE PLACAGE AU CHROME TRIVALENT
Publication
Application
Priority
US 201615144688 A 20160502
Abstract (en)
[origin: EP3241928A2] An electrolyte solution for chrome plating from trivalent chromium is prepared by dissolving in an aqueous medium a trivalent chromium salt (e.g., chromium (III) chloride or chromium (III) sulfate), dissolving an oxalate compound (e.g., sodium oxalate, potassium oxalate, or oxalic acid), dissolving a metal salt (e.g., aluminum sulfate or aluminum chloride), dissolving an alkali metal sulfate (e.g., sodium sulfate or potassium sulfate), and dissolving an alkali metal halide (e.g., sodium fluoride or potassium fluoride). A substrate is chrome plated from trivalent chromium using the electrolyte solution by passing a current between a cathode and an anode through the electrolyte solution to deposit chromium on the substrate.
IPC 8 full level
C25D 3/06 (2006.01); C25D 3/10 (2006.01); C25D 5/18 (2006.01); C25D 17/10 (2006.01)
CPC (source: EP US)
C25D 3/06 (2013.01 - EP US); C25D 3/10 (2013.01 - EP US); C25D 5/18 (2013.01 - EP US); C25D 5/619 (2020.08 - EP US); C25D 5/623 (2020.08 - EP US); C25D 7/00 (2013.01 - EP US); C25D 17/10 (2013.01 - EP US); C25D 21/14 (2013.01 - US); C25D 21/18 (2013.01 - US)
Citation (examination)
- US 3706636 A 19721219 - BRIDE JOHN EDWIN
- CN 105386089 A 20160309 - WUHAN DESYTEK ENV PROT NEW MAT CO LTD & CN 105386089 B 20180424
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
DOCDB simple family (publication)
EP 3241928 A2 20171108; EP 3241928 A3 20180110; EP 3241928 B1 20211110; BR 102017008137 A2 20171107; CA 2959264 A1 20171102; CA 2959264 C 20230627; US 2017314153 A1 20171102
DOCDB simple family (application)
EP 17168294 A 20170426; BR 102017008137 A 20170419; CA 2959264 A 20170224; US 201615144688 A 20160502