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Title:
LIQUID PHENOLIC SULPHUR-CONTAINING ANTIOXIDANTS
Document Type and Number:
WIPO Patent Application WO2004050671
Kind Code:
A8
Abstract:
The invention relates to liquid sulphur-containing antioxidants obtainable by reacting at least compound of formula (I) with at least one compound of formula (II) and at least one compound of formula (III) where the variables are as defined in the claims. The invention further relates to compositions comprising them. The novel lubricant compositions comprise the reaction product of a selected group of 5-tert-butyl-4-hydroxy-3-methyl(or tert-butyl)phenyl substituted carboxylic acid esters with thiodiethylene glycol and a mono-hydroxy alcohol with a chain length higher than 4 C-atoms. The novel lubricant compositions are highly resistant to oxidative degradation and are capable of reducing negative effects of deposits, such as black sludge, in motor combustion engines, particularly spark ignition internal combustion engines.

Inventors:
CAMENZIND HUGO (CH)
DUBS PAUL (CH)
MARTIN ROGER (CH)
CHASAN DAVID ELIEZER (US)
DEMME GUNNAR (US)
ROBBINS JAMES (US)
Application Number:
EP0350876W
Publication Date:
September 16, 2004
Filing Date:
November 24, 2003
Export Citation:
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Assignee:
CIBA SPECIALTY CHEMICALS HOLDING INC.
CAMENZIND, HUGO
DUBS, PAUL
MARTIN, ROGER
CHASAN, DAVID, ELIEZER
DEMME, GUNNAR
ROBBINS, JAMES
International Classes:
C07G99/00; C07C323/12; C10M135/26; C10M159/12; (IPC1-7): C07G17/00; C07C323/12; C10M135/26
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