EP 0339716 A1 19891102 - Method and compositions for controlling corrosion in low and high hardness water.
Title (en)
Method and compositions for controlling corrosion in low and high hardness water.
Title (de)
Verfahren und Zusammensetzung zum Kontrollieren der Korrosion in weichem oder hartem Wasser.
Title (fr)
Procédé et composition pour contrÔler la corrosion dans l'eau douce ou dure.
Publication
Application
Priority
US 18431988 A 19880421
Abstract (en)
A method for inhibiting corrosion in aqueous systems comprising adding to the system being treated an effective amount of a composition comprising a molybdate ion source, a carboxylic acid/sulfonic acid polymer or salt thereof and polyphosphoric acid or an ester of polyphosphoric acid.
IPC 1-7
IPC 8 full level
C23F 11/167 (2006.01); C23F 11/08 (2006.01); C23F 11/173 (2006.01)
CPC (source: EP)
C23F 11/08 (2013.01)
Citation (search report)
- US 4176059 A 19791127 - SUZUKI FUMIKO [CA]
- EP 0122013 A1 19841017 - CALGON CORP [US]
- EP 0210590 A2 19870204 - CALGON CORP [US]
- US 4512552 A 19850423 - KATAYAMA SAKAE [JP], et al
- US 4409121 A 19831011 - LATOS EDWIN J [US], et al
- US 4717945 A 19880105 - YUSA ATSUSHI [JP], et al
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0339716 A1 19891102; EP 0339716 B1 19921223; AT E83804 T1 19930115; AU 3319289 A 19891026; AU 617791 B2 19911205; DE 68903989 D1 19930204; DE 68903989 T2 19930603; ES 2045384 T3 19940116; GR 3007148 T3 19930730; JP H01316475 A 19891221; NZ 228751 A 19911025
DOCDB simple family (application)
EP 89200969 A 19890417; AT 89200969 T 19890417; AU 3319289 A 19890419; DE 68903989 T 19890417; ES 89200969 T 19890417; GR 930400384 T 19930225; JP 10332589 A 19890421; NZ 22875189 A 19890414