Global Patent Index - EP 2980193 A4

EP 2980193 A4 20161116 - FUEL-EFFICIENT ENGINE OIL COMPOSITION

Title (en)

FUEL-EFFICIENT ENGINE OIL COMPOSITION

Title (de)

KRAFTSTOFFSPARENDE MOTORÖLZUSAMMENSETZUNG

Title (fr)

COMPOSITION D'HUILE MOTEUR ÉCONOMISANT LE CARBURANT

Publication

EP 2980193 A4 20161116 (EN)

Application

EP 14772642 A 20140204

Priority

  • JP 2013068222 A 20130328
  • JP 2014052494 W 20140204

Abstract (en)

[origin: EP2980193A1] The present invention provides am engine oil composition with excellent fuel saving properties, which comprises a lubricating base oil with a saturate content of 70 percent by mass or more and a viscosity index of 90 or greater and a star polymer as a viscosity index improver in an amount of at least 4 percent by mass or more on the basis of the total mass of the engine oil composition, the ratio (B/A) of (B) the high temperature high shear viscosity at 1 x 10 7 /s shear rate and 100ºC to (A) the high temperature high shear viscosity at 1 x 10 6 /s shear rate and 100ºC being 0.85 or less.

IPC 8 full level

C10M 169/04 (2006.01); C10M 101/02 (2006.01); C10M 143/12 (2006.01); C10N 20/02 (2006.01); C10N 30/00 (2006.01); C10N 40/25 (2006.01)

CPC (source: EP US)

C10M 143/12 (2013.01 - EP US); C10M 143/14 (2013.01 - US); C10M 169/041 (2013.01 - EP US); C10M 2205/06 (2013.01 - EP US); C10N 2020/02 (2013.01 - EP US); C10N 2020/073 (2020.05 - EP US); C10N 2030/02 (2013.01 - EP US); C10N 2030/68 (2020.05 - EP US); C10N 2040/252 (2020.05 - EP US)

Citation (search report)

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

DOCDB simple family (publication)

EP 2980193 A1 20160203; EP 2980193 A4 20161116; CN 105102597 A 20151125; JP WO2014156306 A1 20170216; US 2016083669 A1 20160324; WO 2014156306 A1 20141002

DOCDB simple family (application)

EP 14772642 A 20140204; CN 201480018891 A 20140204; JP 2014052494 W 20140204; JP 2015508141 A 20140204; US 201414779686 A 20140204