EP 2077316 A3 20111221 - Lubricant compositions with low HTHS for a given SAE viscosity grade
Title (en)
Lubricant compositions with low HTHS for a given SAE viscosity grade
Title (de)
Schmiermittelzusammensetzungen mit niedrigem HTHS für einen vorgegebenen SAE-Viskositätsgrad
Title (fr)
Compositions de lubrifiant avec HTHS faible pour un degré de viscosité SAE donné
Publication
Application
Priority
US 95762707 A 20071217
Abstract (en)
[origin: EP2077316A2] A lubricant composition that exhibits low high temperature high shear viscosity is disclosed. The lubricant composition is made up of a first polymer having a kinematic viscosity ratio less than or equal to 0.25 and a shear stability index (SSI) equal to or greater than 20 percent and base oil having a viscosity index equal to or greater than 120.
IPC 8 full level
C10M 143/10 (2006.01); C10M 157/00 (2006.01); C10M 169/04 (2006.01); C10N 30/02 (2006.01); C10N 40/25 (2006.01)
CPC (source: EP US)
C10M 143/10 (2013.01 - EP US); C10M 157/00 (2013.01 - EP US); C10M 169/047 (2013.01 - EP US); C10N 2020/019 (2020.05 - EP US); C10N 2020/02 (2013.01 - EP US); C10N 2030/54 (2020.05 - EP US); C10N 2040/25 (2013.01 - EP US)
Citation (search report)
- [X] WO 0058423 A1 20001005 - MOBIL OIL CORP [US]
- [Y] EP 0425027 A2 19910502 - SHELL INT RESEARCH [NL]
- [A] US 2006211586 A1 20060921 - HUANG CHOR [US], et al
- [Y] US 5458791 A 19951017 - RHODES ROBERT B [US], et al
- [Y] US 5458792 A 19951017 - RHODES ROBERT B [US], et al
- [Y] US 3775329 A 19731127 - ECKERT R
- [XP] EP 1916291 A1 20080430 - TOTAL FRANCE [FR]
- [A] GHOSH P ET AL: "Shear stability of polymers used as viscosity modifiers in lubricating oils", INDIAN JOURNAL OF CHEMICAL TECHNOLOGY, SCIENTIFIC PUBLISHERS, JODHPUR, INDIA, IN, vol. 5, 1 January 1998 (1998-01-01), pages 309 - 314, XP009153775, ISSN: 0971-457X
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)
EP 2077316 A2 20090708; EP 2077316 A3 20111221; AU 2008258192 A1 20090702; AU 2008258192 B2 20130110; CA 2646858 A1 20090617; CN 101463286 A 20090624; JP 2009144162 A 20090702; KR 20090065449 A 20090622; SG 153772 A1 20090729; US 2009156442 A1 20090618
DOCDB simple family (application)
EP 08105939 A 20081204; AU 2008258192 A 20081217; CA 2646858 A 20081216; CN 200810187139 A 20081217; JP 2008321494 A 20081217; KR 20080127717 A 20081216; SG 2008092868 A 20081216; US 95762707 A 20071217