EP 2943558 A1 20151118 - LUBRICATING COMPOSITIONS HAVING IMPROVED SHEAR STABILITY
Title (en)
LUBRICATING COMPOSITIONS HAVING IMPROVED SHEAR STABILITY
Title (de)
SCHMIERMITTELZUSAMMENSETZUNG MIT VERBESSERTER SCHERSTABILITÄT
Title (fr)
COMPOSITIONS LUBRIFIANTES AYANT UNE STABILITÉ AMÉLIORÉE AU CISAILLEMENT
Publication
Application
Priority
- US 201361748539 P 20130103
- US 2013076363 W 20131219
Abstract (en)
[origin: US2014187457A1] A lubricating composition with improved shear stability having a kinematic viscosity (Kv100) from 5 to 32.5 cSt at 100° C., and a viscosity index from 140 to 200. The lubricating composition includes: a bi-modal blend lubricating oil including from 20 to 99 weight percent of a low viscosity basestock having a Kv100 from 2 to 8 cSt at 100° C., and from 1 to 20 weight percent of a high viscosity basestock having a Kv100 from 40 to 600 cSt at 100° C.; a viscosity modifier including a copolymer having units derived from monomers of (i) an α-olefin and (ii) an ethylenically unsaturated carboxylic acid or derivatives thereof esterified with an alcohol; and an alkylated aromatic co-base stock in an amount from 1 to 8 weight percent and having a Kv100 from 3 to 15 cSt at 100° C.
IPC 8 full level
C10M 169/04 (2006.01); C10N 20/02 (2006.01); C10N 40/04 (2006.01)
CPC (source: EP US)
C10M 127/06 (2013.01 - US); C10M 145/10 (2013.01 - US); C10M 149/04 (2013.01 - US); C10M 149/06 (2013.01 - US); C10M 169/04 (2013.01 - EP US); C10M 169/041 (2013.01 - EP US); C10M 2203/06 (2013.01 - EP US); C10M 2203/065 (2013.01 - EP US); C10M 2205/028 (2013.01 - EP US); C10M 2205/0285 (2013.01 - EP US); C10M 2205/22 (2013.01 - EP US); C10M 2205/223 (2013.01 - EP US); C10M 2209/084 (2013.01 - EP US); C10M 2209/086 (2013.01 - EP US); C10M 2217/022 (2013.01 - EP US); C10M 2217/024 (2013.01 - EP US); C10M 2217/06 (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 2030/68 (2020.05 - EP US); C10N 2040/04 (2013.01 - EP US)
Citation (search report)
See references of WO 2014107314A1
Citation (examination)
WO 03064571 A1 20030807 - EXXONMOBIL RES & ENG CO [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 2014187457 A1 20140703; EP 2943558 A1 20151118; SG 10201705375X A 20170728; SG 11201504560R A 20150730; WO 2014107314 A1 20140710
DOCDB simple family (application)
US 201314104365 A 20131212; EP 13821565 A 20131219; SG 10201705375X A 20131219; SG 11201504560R A 20131219; US 2013076363 W 20131219