EP 2176446 A1 20100421 - METHODS AND COMPOSITIONS FOR PASSIVATING HEAT EXCHANGER SYSTEMS
Title (en)
METHODS AND COMPOSITIONS FOR PASSIVATING HEAT EXCHANGER SYSTEMS
Title (de)
VERFAHREN UND ZUSAMMENSETZUNGEN ZUR PASSIVIERUNG VON WÄRMETAUSCHERSYSTEMEN
Title (fr)
PROCEDES ET COMPOSITIONS DESTINES A PASSIVER DES SYSTEMES D'ECHANGEUR THERMIQUE
Publication
Application
Priority
- US 2008071123 W 20080725
- US 95362607 P 20070802
Abstract (en)
[origin: WO2009018123A1] A method for treating parts in a heat exchanger system is provided. In the method, heat exchanger parts with metal surfaces which chemically and detrimentally interact with additives in coolant fluids in the heat exchanger system are treated by contacting the metal surfaces with a phosphate-containing solution for the phosphate-containing solution to passivate the metal surface for subsequent contact with the coolant fluids.
IPC 8 full level
C09K 5/20 (2006.01); C23C 22/66 (2006.01); C23C 22/68 (2006.01); C23F 11/18 (2006.01); F28F 19/02 (2006.01)
CPC (source: EP US)
C09K 5/20 (2013.01 - EP US); C23C 22/66 (2013.01 - EP US); C23C 22/68 (2013.01 - EP US); C23F 11/184 (2013.01 - EP US); F28F 19/02 (2013.01 - EP US)
Citation (search report)
See references of WO 2009018123A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
WO 2009018123 A1 20090205; AU 2008282497 A1 20090205; BR PI0814734 A2 20170606; CA 2695183 A1 20090205; CN 101809201 A 20100818; EA 201070223 A1 20100830; EP 2176446 A1 20100421; JP 2010535324 A 20101118; MX 2010001299 A 20100601; US 2009045379 A1 20090219; ZA 201001019 B 20110428
DOCDB simple family (application)
US 2008071123 W 20080725; AU 2008282497 A 20080725; BR PI0814734 A 20080725; CA 2695183 A 20080725; CN 200880106015 A 20080725; EA 201070223 A 20080725; EP 08796596 A 20080725; JP 2010520091 A 20080725; MX 2010001299 A 20080725; US 18566208 A 20080804; ZA 201001019 A 20100211