EP 1925655 A1 20080528 - Use of a 4-oxo-butanoic acid in lubricating oil compositions
Title (en)
Use of a 4-oxo-butanoic acid in lubricating oil compositions
Title (de)
Verwendung einer 4-Oxobutansäure in Schmierölzusammensetzungen
Title (fr)
Utilisation d'un acide 4-oxobutanoïque dans des compositions d'huile lubrifiante
Publication
Application
Priority
- EP 06124583 A 20061122
- EP 07121012 A 20071119
Abstract (en)
An automotive lubricating oil composition, comprises: (A) an oil of lubricating viscosity in a major amount; and (B) as an additive component in a minor amount, an oil-soluble or oil-dispersible 4-oxobutanoic acid having the moiety -CO(CH 2 ) 2 COOH bonded to (i) a group OR 1 where R 1 is hydrocarbyl group having 10 to 30 carbon atoms; or (ii) a group X being an aromatic group substituted with at least one hydrocarbyl group having 10 to 30 carbon atoms; or (iii) a group NR 2 R 3 where one or both of R 2 and R 3 is hydrocarbyl group having from 10 to 30 carbon atoms and one but not both of R 2 and R 3 may be a hydrogen atom, or a salt thereof.
IPC 8 full level
C10M 129/26 (2006.01); C10M 129/40 (2006.01); C10M 129/76 (2006.01); C10M 133/16 (2006.01); C10N 30/06 (2006.01); C10N 40/25 (2006.01)
CPC (source: EP)
C10M 129/40 (2013.01); C10M 129/76 (2013.01); C10M 133/16 (2013.01); C10M 2207/10 (2013.01); C10M 2207/126 (2013.01); C10M 2207/288 (2013.01); C10M 2215/08 (2013.01); C10M 2223/045 (2013.01); C10N 2030/06 (2013.01); C10N 2030/56 (2020.05); C10N 2040/25 (2013.01); C10N 2040/252 (2020.05); C10N 2040/255 (2020.05)
Citation (applicant)
- US 4495088 A 19850122 - LISTON THOMAS V [US]
- US 4683069 A 19870728 - BREWSTER PHILLIP W [CA], et al
- EP 0092946 A2 19831102 - EXXON RESEARCH ENGINEERING CO [US]
- WO 0172933 A2 20011004 - CHEVRON ORONITE CO [US]
- GB 2106106 A 19830407 - LUBRIZOL CORP [US]
- US 2005267003 A1 20051201 - CAMENZIND HUGO [CH], et al
- US 2715108 A 19550809 - FRANCIS CHARLES E
- GB 580603 A 19460913 - STANDARD OIL CO CALIFORNIA
- US 3121057 A 19640211 - GEE PAUL Y C, et al
Citation (search report)
- [X] GB 2106106 A 19830407 - LUBRIZOL CORP [US]
- [X] US 2715108 A 19550809 - FRANCIS CHARLES E
- [DX] US 4096077 A 19780620 - SWAKON EDWARD ANTONE
- [X] GB 580603 A 19460913 - STANDARD OIL CO CALIFORNIA
- [X] US 3121057 A 19640211 - GEE PAUL Y C, et al
- [X] US 2005267003 A1 20051201 - CAMENZIND HUGO [CH], et al
- [X] DATABASE WPI Week 199604, Derwent World Patents Index; AN 1996-032670, XP002471704
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 MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 07121012 A 20071119