Title:
STABILISING COMPOSITIONS FOR LUBRICATING OILS
Document Type and Number:
WIPO Patent Application WO2001085878
Kind Code:
A3
Abstract:
Stabilising compositions for lubricant base stocks and lubricant formulations are composed of a mixture of (a) at least one aromatic aminic amine antioxidant optionally blended with at least one hindered phenolic antioxidant and (b) at least one neutral organo phosphate or phosphite, optionally blended with at least one acid organo phosphate or phosphite. These stabilising composition mixtures are characterised by their stabilising capacity which is considerably higher than that of either the single antioxidants or the single phosphate or phosphite additives. These stabilising compositions can be used in all fields where the single components of the mixtures are generally used and where deterioration due to oxidation processes takes place.
Inventors:
HOLT ALAN (GB)
MULQUEEN GERARD (GB)
MULQUEEN GERARD (GB)
Application Number:
PCT/GB2001/002058
Publication Date:
April 11, 2002
Filing Date:
May 10, 2001
Export Citation:
Assignee:
GREAT LAKES CHEMICAL EUROP (CH)
HOLT ALAN (GB)
MULQUEEN GERARD (GB)
HOLT ALAN (GB)
MULQUEEN GERARD (GB)
International Classes:
C10M133/12; C10M129/14; C10M129/76; C10M135/24; C10M135/30; C10M137/02; C10M137/04; C10M141/10; C10N30/10; C10N40/04; C10N40/08; C10N40/20; C10N40/25; C10N50/10; (IPC1-7): C10M141/10
Foreign References:
| EP0620267A1 | 1994-10-19 | |||
| EP0799883A1 | 1997-10-08 | |||
| US5681506A | 1997-10-28 | |||
| US5167844A | 1992-12-01 | |||
| EP0274200A2 | 1988-07-13 |
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