EP 0055881 B1 19850424 - METHOD FOR THE TREATMENT OF METAL SURFACES
Title (en)
METHOD FOR THE TREATMENT OF METAL SURFACES
Publication
Application
Priority
US 22221881 A 19810102
Abstract (en)
[origin: US4385096A] Described is an aqueous base coat composition utilizing magnesium ion preferably in conjunction with at least some compounds from the group hydrofluoric acid, phosphoric acid, tannic acid, and nitric acid and exhibiting a pH of less than 7. The anti-corrosion and adhesive properties of this base coating composition allow it to be further coated with organic film formers, varnishes, lacquers, inks, etc. to form a finished product which is resistant to corrosives, humidity, impact problems, and chipping.
IPC 1-7
IPC 8 full level
C23C 22/48 (2006.01); C23C 22/08 (2006.01); C23C 22/22 (2006.01); C23C 22/36 (2006.01)
CPC (source: EP US)
C23C 22/22 (2013.01 - EP US); C23C 22/368 (2013.01 - EP US); Y10T 428/31678 (2015.04 - EP US); Y10T 428/31971 (2015.04 - EP US)
Designated contracting state (EPC)
BE DE FR IT SE
DOCDB simple family (publication)
EP 0055881 A1 19820714; EP 0055881 B1 19850424; AU 535455 B2 19840322; AU 7922482 A 19820708; DE 3170216 D1 19850530; GB 2093074 A 19820825; GB 2093074 B 19850306; JP S57134569 A 19820819; JP S5934234 B2 19840821; US 4385096 A 19830524
DOCDB simple family (application)
EP 81201403 A 19811229; AU 7922482 A 19820106; DE 3170216 T 19811229; GB 8139145 A 19811231; JP 21593581 A 19811229; US 22221881 A 19810102