EP 0056675 B1 19841128 - PRETREATMENT COMPOSITION FOR PHOSPHATISING FERROUS METALS, AND METHOD OF PREPARING THE SAME
Title (en)
PRETREATMENT COMPOSITION FOR PHOSPHATISING FERROUS METALS, AND METHOD OF PREPARING THE SAME
Publication
Application
Priority
JP 702881 A 19810119
Abstract (en)
[origin: EP0056675A2] An aqueous composition for the treatment of ferrous metal surfaces is a solution comprising: (a) titanium compound in amount from 1 to 100 parts per million by weight, measured as titanium; (b) phosphate and/or acid phosphate in amount totalling from 50 to 1500 parts per million by weight, measured as PO4; (c) pyrophosphate in amount from 10 to 300 parts per million by weight, measured as P2O7; and (d) carbonate and/or acid carbonate in amount totalling 20 to 1500 parts per million by weight, measured as CO3; the solution having a pH from 8.5 to 9.5.
IPC 1-7
IPC 8 full level
C23C 22/80 (2006.01)
CPC (source: EP)
C23C 22/80 (2013.01)
Designated contracting state (EPC)
AT BE DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0056675 A2 19820728; EP 0056675 A3 19820804; EP 0056675 B1 19841128; AT E10513 T1 19841215; DE 3261311 D1 19850110; JP S57120678 A 19820727; JP S5855229 B2 19831208
DOCDB simple family (application)
EP 82200062 A 19820119; AT 82200062 T 19820119; DE 3261311 T 19820119; JP 702881 A 19810119