EP 1916291 B1 20180124 - Use of a multifunctional lubricant
Title (en)
Use of a multifunctional lubricant
Title (de)
Verwendung eines multifunktionellen Schmiermittels
Title (fr)
Utilisation d'un fluide lubrifiant multifonctionnel
Publication
Application
Priority
EP 06291645 A 20061024
Abstract (en)
[origin: EP1916291A1] The multi-functional lubricating fluid is lubricant composition comprising oil of group I-V and mixture of at least two polymers. The lubricating fluid has viscosity of more than 9 cSt, preferably 9-12 cSt for 30 grade starting oil and more than 12 cSt, preferably 12-15 cSt for 40 grade starting oil at 1000[deg] C, viscosity of more than 8.5 cSt, preferably 8.5-11 cSt for 30 or 40 grade starting oil at 1000[deg] C after 20 hours KRL test, and viscosity of less than 51 cSt, preferably 41-51 cSt for 30 or 40 grade starting oil at 400[deg] C after 3 hours KRL test for 3 hours. The multi-functional lubricating fluid is a lubricant composition comprising at least one oil of group I-V and a mixture of at least two polymers having difference of permanent shearing stability index (PSSI) of 50 measured by standardized KRL test at 1000[deg] C for 20 hours. The lubricating fluid has viscosity of more than 9 cSt, preferably 9-12 cSt for 30 grade starting oil and more than 12 cSt, preferably 12-15 cSt for 40 grade starting oil at 1000[deg] C after 30 cycle Bosch test following CEC-L-14-A-93 standard, viscosity of more than 8.5 cSt, preferably 8.5-11 cSt for 30 or 40 grade starting oil at 1000[deg] C after 20 hours KRL test following CEC-L-45-A-99 standard, and viscosity of less than 51 cSt, preferably 41-51 cSt for 30 or 40 grade starting oil at 400[deg] C after 3 hours KRL test following CEC-L-45-A-99 standard for 3 hours.
IPC 8 full level
C10M 157/00 (2006.01); C10N 20/02 (2006.01); C10N 40/25 (2006.01)
CPC (source: EP US)
C10M 157/00 (2013.01 - EP US); C10M 2205/02 (2013.01 - EP US); C10M 2205/026 (2013.01 - EP US); C10M 2205/028 (2013.01 - EP US); C10N 2020/019 (2020.05 - EP US); C10N 2020/02 (2013.01 - EP US); C10N 2030/02 (2013.01 - EP US); C10N 2030/68 (2020.05 - EP US); C10N 2040/04 (2013.01 - EP US); C10N 2040/08 (2013.01 - EP US); C10N 2040/25 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1916291 A1 20080430; EP 1916291 B1 20180124; AR 063513 A1 20090128; CA 2667583 A1 20080502; CA 2667583 C 20160712; CN 101578355 A 20091111; CN 101578355 B 20131211; EP 2380952 A1 20111026; ES 2666595 T3 20180507; RU 2009114887 A 20101127; RU 2469077 C2 20121210; US 2009270294 A1 20091029; WO 2008050003 A2 20080502; WO 2008050003 A3 20081002; WO 2008050003 B1 20081120
DOCDB simple family (application)
EP 06291645 A 20061024; AR P070104673 A 20071023; CA 2667583 A 20071019; CN 200780045576 A 20071019; EP 11172451 A 20061024; ES 06291645 T 20061024; FR 2007001729 W 20071019; RU 2009114887 A 20071019; US 44670607 A 20071019