EP 0332698 A4 19890911 - GEAR OIL COMPOSITION.
Title (en)
GEAR OIL COMPOSITION.
Title (de)
GETRIEBEÖLZUSAMMENSETZUNG.
Title (fr)
HUILE POUR ENGRENAGES.
Publication
Application
Priority
JP 8700636 W 19870827
Abstract (en)
[origin: EP0332698A1] A gear oil composition containing polyoxyalkylene glycol as a base oil, wherein the polyoxyalkylene glycol is a polymer obtained by ring-opening polymerization or ring-opening copolymerization of one or more members selected from among alkylene oxides having 2 to 4 carbon atoms and having a viscosity of 5 mm<2>/s to less than 20 mm<2>/s (at 100 DEG C). This gear composition has remarkably excellent oxidation stability and abrasion resistance at elevated temperatures and a good flowability at low temperatures. <H0> ABSTRACT </H0> A gear oil composition comprising polyoxyalkylene glycol(s) as a base oil, characterized in that said polyoxyalkylene glycol(s) are polymer(s) obtained by ring-opening polymerization or copolymerization of one or more alkylene oxides selected from the group of alkylene oxides having 2 to 4 carbon atoms and have a viscosity of 5 mm<2>/s to 20 mm<2>/s at 100 DEG C. This gear oil composition exhibits excellent properties in oxidation stability and wear resistance at high temperatures as well as in flowability at low temperatures.
IPC 1-7
IPC 8 full level
C10M 107/34 (2006.01); C10M 111/04 (2006.01); C10N 20/02 (2006.01); C10N 40/04 (2006.01)
CPC (source: EP)
C10M 105/36 (2013.01); C10M 105/38 (2013.01); C10M 107/34 (2013.01); C10M 111/04 (2013.01); C10M 2207/281 (2013.01); C10M 2207/282 (2013.01); C10M 2207/2825 (2013.01); C10M 2207/283 (2013.01); C10M 2207/2835 (2013.01); C10M 2207/2855 (2013.01); C10M 2207/286 (2013.01); C10M 2207/34 (2013.01); C10M 2209/104 (2013.01); C10M 2209/105 (2013.01); C10M 2209/106 (2013.01); C10M 2209/107 (2013.01); C10M 2215/064 (2013.01); C10M 2223/041 (2013.01); C10N 2020/01 (2020.05); C10N 2040/02 (2013.01); C10N 2040/04 (2013.01); C10N 2040/042 (2020.05); C10N 2040/044 (2020.05); C10N 2040/046 (2020.05); C10N 2040/08 (2013.01)
Citation (search report)
- [E] EP 0293715 A2 19881207 - BAYER AG [DE]
- [X] EP 0109515 A2 19840530 - UNION CARBIDE CORP [US]
- [X] FR 1448210 A 19660805 - KUHLMANN ETS
- [A] MECHANICAL ENGINEERING, vol. 73, June 1951, pages 469-476; C.H. SWEATT et al.: "Some industrial experiences with synthetic lubricants"
- See references of WO 8901964A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0332698 A1 19890920; EP 0332698 A4 19890911; JP S62201995 A 19870905; WO 8901964 A1 19890309
DOCDB simple family (application)
EP 87905651 A 19870827; JP 4304186 A 19860228; JP 8700636 W 19870827