EP 1637580 A1 20060322 - Viscosity index modifying additives for lubricating compositions
Title (en)
Viscosity index modifying additives for lubricating compositions
Title (de)
Viskositätsindexmodifizierende Additive für Schmierzusammensetzungen
Title (fr)
Additifs modificateurs de l'indice de viscosité pour des compositions lubrifiantes
Publication
Application
Priority
US 94337504 A 20040917
Abstract (en)
A lubricant composition method of using the lubricant composition. The lubricant composition contains a base oil of lubricating viscosity and from about 5 to about 30 percent by weight of an additive comprising a shear stable olefin copolymer derived from a copolymer having a number average molecular weight ranging from about 50,000 to about 250,000. The shear stable olefin copolymer has a shear stability index of less than about 40, a polydispersity of not more than about 1.5, and a thickening efficiency of greater than about 1.8, and provides viscosity index improving properties to the lubricant composition.
IPC 8 full level
C10M 171/04 (2006.01); C08L 23/00 (2006.01); C08L 25/00 (2006.01); C10M 171/02 (2006.01); C10N 20/02 (2006.01); C10N 20/04 (2006.01); C10N 40/04 (2006.01); C10N 40/25 (2006.01); C10N 70/00 (2006.01)
CPC (source: EP KR US)
C10M 7/00 (2013.01 - KR); C10M 143/00 (2013.01 - KR); C10M 171/02 (2013.01 - EP US); C10M 171/04 (2013.01 - EP US); C10M 2205/00 (2013.01 - EP US); C10M 2205/022 (2013.01 - EP US); C10M 2205/024 (2013.01 - EP US); C10M 2205/028 (2013.01 - EP US); C10M 2205/04 (2013.01 - EP US); C10M 2205/06 (2013.01 - EP US); C10M 2205/08 (2013.01 - EP US); C10N 2020/00 (2013.01 - EP US); C10N 2020/019 (2020.05 - EP US); C10N 2020/04 (2013.01 - EP US); C10N 2020/073 (2020.05 - EP US); C10N 2030/68 (2020.05 - EP US); C10N 2040/042 (2020.05 - EP US); C10N 2040/252 (2020.05 - EP US); C10N 2040/255 (2020.05 - EP US); C10N 2060/00 (2013.01 - EP US); C10N 2060/09 (2020.05 - EP US); C10N 2070/02 (2020.05 - EP US)
Citation (applicant)
- US 4340689 A 19820720 - JOFFRION RALPH K
- US 5204012 A 19930420 - SCHAFFHAUSEN JOHN G [US]
- US 6034040 A 20000307 - OZBALIK NUBAR [US], et al
- US 4867890 A 19890919 - COLCLOUGH TERENCE [GB], et al
- EP 0330522 A2 19890830 - EXXON CHEMICAL PATENTS INC [US]
- US 3974081 A 19760810 - RUTKOWSKI ALFRED J, et al
- US 4029587 A 19770614 - KOCH FREDERICK WILLIAM
Citation (search report)
- [X] US 5244590 A 19930914 - CHUNG DAVID Y [US], et al
- [X] US 2003013623 A1 20030116 - TSE KWOK-LEUNG [US], et al
- [X] US 2004058830 A1 20040325 - KAN KOJIRO [JP], et al
- [X] EP 0360440 A2 19900328 - EXXON CHEMICAL PATENTS INC [US]
- [X] EP 0299608 A1 19890118 - EXXON CHEMICAL PATENTS INC [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 1637580 A1 20060322; AU 2005203438 A1 20060406; AU 2005203438 B2 20070830; CA 2514499 A1 20060317; CN 1749377 A 20060322; JP 2006083382 A 20060330; KR 100724328 B1 20070604; KR 20060051400 A 20060519; SG 121118 A1 20060426; US 2007191242 A1 20070816
DOCDB simple family (application)
EP 05017288 A 20050809; AU 2005203438 A 20050803; CA 2514499 A 20050802; CN 200510104141 A 20050916; JP 2005242400 A 20050824; KR 20050086959 A 20050916; SG 200505807 A 20050912; US 94337504 A 20040917