EP 2109659 B1 20190612 - DISPERSANT COMBINATION FOR IMPROVED TRANSMISSION FLUIDS

Title (en)

DISPERSANT COMBINATION FOR IMPROVED TRANSMISSION FLUIDS

Title (de)

DISPERSIONSMITTELKOMBINATION FÜR VERBESSERTE ÜBERTRAGUNGSFLÜSSIGKEITEN

Title (fr)

COMBINAISON DISPERSANTE POUR FLUIDES DE TRANSMISSION AMÉLIORÉS

Publication

EP 2109659 B1 20190612 (EN)

Application

EP 08728000 A 20080122

Priority

US 2008051589 W 20080122
US 88719207 P 20070130

Abstract (en)

[origin: WO2008094781A2] A lubricant composition of an oil, a dispersant viscosity modifier of a poly(meth)acrylate copolymer having a nitrogen-containing monomer in an amount to provide at least about 0.4 percent by weight nitrogen to the copolymer, and a succinimide dispersant prepared in the substantial absence of chlorine gives good performance as a transmission fluid.

IPC 8 full level

C10M 161/00 (2006.01)

CPC (source: EP US)

C10M 161/00 (2013.01 - EP US); C10M 2215/28 (2013.01 - EP US); C10M 2217/02 (2013.01 - EP US); C10M 2217/028 (2013.01 - EP US); C10M 2223/043 (2013.01 - EP US); C10M 2223/049 (2013.01 - EP US); C10N 2030/06 (2013.01 - EP US); C10N 2030/10 (2013.01 - EP US); C10N 2030/76 (2020.05 - EP US); C10N 2040/04 (2013.01 - EP US); C10N 2040/042 (2020.05 - EP US); C10N 2040/045 (2020.05 - EP US); C10N 2060/00 (2013.01 - EP US); C10N 2060/14 (2013.01 - EP US)

Citation (examination)

WO 2007044820 A1 20070419 - LUBRIZOL CORP [US], et al

Citation (opposition)

Opponent : Afton Chemical Corporation

US 5665685 A 19970909 - TAKIGAWA SHOJI [JP]
US 6586375 B1 20030701 - GAHAGAN MICHAEL P [GB], et al
US 4036767 A 19770719 - YAMAMOTO ROY I, et al
US 2002086965 A1 20020704 - SIVIK MATTHEW R [US], et al
US 2003032293 A1 20030213 - KIM TAE-SONG [KR], et al
US 2004077509 A1 20040422 - YUKI TSUYOSHI [JP], et al
WO 2007070845 A2 20070621 - LUBRIZOL CORP [US], et al
WO 2007127615 A2 20071108 - LUBRIZOL CORP [US], et al
WO 2007044820 A1 20070419 - LUBRIZOL CORP [US], et al
US 6077909 A 20000620 - PUDELSKI JOHN K [US], et al
US 4021357 A 19770503 - MORDUCHOWITZ ABRAHAM, et al
EP 0355895 A2 19900228 - SHELL INT RESEARCH [NL]
US 2005202981 A1 20050915 - EVELAND RENEE A [US], et al
US 2005124509 A1 20050609 - GUTIERREZ ANTONIO [US], et al
WO 2005116174 A1 20051208 - LUBRIZOL CORP [US]
US 52333908 A 20080122
US 5175255 A 19921229 - THOMASON ARLEN R [US], et al
JP 2007197509 A 20070809 - SANYO CHEMICAL IND LTD
EP 2053117 A1 20090429 - IDEMITSU KOSAN CO [JP]
US 2012135898 A1 20120531 - TIPTON CRAIG D [US], et al
US 4450087 A 19840522 - ASKEW HERBERT F [GB], et al
LESLIE R. RUDNICK: "LUBRICANT ADDITIVES, CHEMISTRY AND APPLICATIONS", 2003, MARCEL DEKKER, INC.,, pages: 2pp, 342-344, 394 - 396, XP055706749
VACLAV STEPINA, VACLAV VESELY: "LUBRICANTS AND SPECIAL FLUIDS,", 1992, ELSEVIER, pages: 2pp, 316 - 319, XP055706757
XIONG ET AL.: "Polyacrylamide degradation and its implications in environmental systems", NPJ CLEAN WATER, vol. 1, 2018, pages 1 - 9, XP055706768
THEO MANG, WILFRIED DRESEL: "LUBRICANTS AND LUBRICATION, Second Edition", 2007, WILEY-VCH VERLAG, article "6.4.3 Ashless Dispersants (AD)", pages: 2pp, 103, XP055706780
"Lubricant Additives, Chemistry and Applications", 1 January 2010, article RUDNICK LESLIE: "Dispersants", pages: 153 - 157,331, XP055806930
"Chemistry and Technology of Lubricants", 1 January 2010, SPRINGER, article MORTIER ROY M, ET AL: "Viscosity Index Improvers and Thickeners", pages: 1 - 12, XP055806932
NIFANT’EV ILYA, VINOGRADOV ALEXANDER, VINOGRADOV ALEXEY, IVCHENKO PAVEL: "DFT Modeling of the Alternating Radical Copolymerization and Alder-Ene Reaction between Maleic Anhydride and Olefins", POLYMERS, vol. 12, no. 4, pages 744, XP055806934, DOI: 10.3390/polym12040744
"LUBRICANT ADDITIVES, CHEMISTRY AND APPLICATIONS", 1 January 2003, MARCEL DEKKER, INC., , article LESLIE R. RUDNICK: "LUBRICANT ADDITIVES, CHEMISTRY AND APPLICATIONS /Passage/", pages: 8 - 8, XP093022593

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

DOCDB simple family (publication)

WO 2008094781 A2 20080807; WO 2008094781 A3 20081016; CA 2676290 A1 20080807; CA 2676290 C 20150310; EP 2109659 A2 20091021; EP 2109659 B1 20190612; JP 2010516866 A 20100520; JP 5414537 B2 20140212; US 2010099588 A1 20100422

DOCDB simple family (application)

US 2008051589 W 20080122; CA 2676290 A 20080122; EP 08728000 A 20080122; JP 2009547373 A 20080122; US 52333908 A 20080122