EP 4108745 A1 20221228 - ETHER-BASED LUBRICANT COMPOSITIONS, METHODS AND USES
Title (en)
ETHER-BASED LUBRICANT COMPOSITIONS, METHODS AND USES
Title (de)
ETHERBASIERTE SCHMIERMITTELZUSAMMENSETZUNGEN, VERFAHREN UND VERWENDUNGEN
Title (fr)
COMPOSITIONS LUBRIFIANTES À BASE D'ÉTHER, PROCÉDÉS ET UTILISATIONS
Publication
Application
Priority
- CN 2016110345 W 20161216
- EP 17816808 A 20171214
- EP 2017082924 W 20171214
Abstract (en)
The present invention provides a lubricant composition for an internal combustion engine comprising a base oil of lubricating viscosity, wherein the base oil comprises an ether base stock of formula (A): where: Ra and Rb are aliphatic hydrocarbyl groups and may be the same or different; wherein at least one of Ra and Rb is branched-chain alkyl, alkoxy-substituted-alkyl or cycloalkyl-substituted-alkyl; the lubricant composition further comprising at least one aminic anti-oxidant and/or at least one phenolic anti-oxidant; and wherein the total combined amount of aminic and phenolic anti-oxidant in the lubricant composition is not more than 4.0 % by weight of the lubricant composition. In some embodiments, the ether base stock has the formula (1): where: R1, R2, R3, R4, R5 and R6 are as defined herein. The lubricant composition may be used for lubricating a surface in an internal combustion engine as well as for improving the fuel economy performance and/or piston cleanliness performance of an engine and/or a vehicle, such as an automotive vehicle associated with an internal combustion engine.
IPC 8 full level
C10M 169/04 (2006.01)
CPC (source: EP US)
C10M 169/04 (2013.01 - EP US); C10M 2203/1025 (2013.01 - EP); C10M 2205/0285 (2013.01 - EP); C10M 2207/026 (2013.01 - EP US); C10M 2207/028 (2013.01 - EP US); C10M 2207/04 (2013.01 - EP); C10M 2207/0406 (2013.01 - EP US); C10M 2215/065 (2013.01 - EP US); C10M 2215/066 (2013.01 - EP US); C10M 2219/046 (2013.01 - EP); C10M 2223/045 (2013.01 - EP US); C10N 2030/02 (2013.01 - EP US); C10N 2030/08 (2013.01 - EP); C10N 2030/10 (2013.01 - EP); C10N 2030/52 (2020.05 - EP US); C10N 2030/74 (2020.05 - EP US); C10N 2040/25 (2013.01 - EP US)
C-Set (source: EP)
Citation (applicant)
- US 7622431 B2 20091124 - MUIR RONALD J [CA]
- EP 1533362 A1 20050525 - INFINEUM INT LTD [GB]
- WO 9921902 A1 19990506 - CASTROL LTD [GB], et al
- WO 03099890 A2 20031204 - CASTROL LTD [GB], et al
- WO 2006099250 A1 20060921 - CASTROL LTD [GB], et al
- US 2005198894 A1 20050915 - MIGDAL CYRIL A [US], et al
- US 2006090393 A1 20060504 - ROWLAND ROBERT G [US], et al
- "ENGINE OIL LICENSING AND CERTIFICATION SYSTEM", October 2013
Citation (search report)
- [XAY] CN 101006164 A 20070725 - IDEMITSU KOSAN CO [JP] & US 2007281873 A1 20071206 - OKADA TAHEI [JP]
- [X] WO 2016129148 A1 20160818 - MORESCO CORP [JP] & EP 3257922 A1 20171220 - MORESCO CORP [JP]
- [Y] GB 817054 A 19590722 - HOECHST AG
- [AP] WO 2016203310 A1 20161222 - CASTROL LTD [GB]
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)
WO 2018109123 A1 20180621; CN 110462010 A 20191115; CN 110462010 B 20230110; CN 115895763 A 20230404; EP 3555248 A1 20191023; EP 3555248 B1 20220427; EP 4108745 A1 20221228; JP 2020502338 A 20200123; JP 2022160461 A 20221019; JP 7107938 B2 20220727; PL 3555248 T3 20220829; US 2020115651 A1 20200416
DOCDB simple family (application)
EP 2017082924 W 20171214; CN 201780085260 A 20171214; CN 202211673733 A 20171214; EP 17816808 A 20171214; EP 22169847 A 20171214; JP 2019532717 A 20171214; JP 2022113566 A 20220714; PL 17816808 T 20171214; US 201716470243 A 20171214