OIL SOLUBLE POLYALKYLENE GLYCOL LUBRICANT COMPOSITIONS

A lubricant composition comprising at least 90 wt% of at least one oil soluble polyalkylene glycol (OSP), wherein the OSP comprises at least 40 wt% units derived from butylene oxide and at least 40 wt% units derived from propylene oxide, initiated by one or more initiators selected from monols, diol...

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Bibliographic Details
Main Author GREAVES, MARTIN R
Format Patent
LanguageEnglish
French
Published 10.05.2013
Subjects
CHEMISTRY
FUELS
LUBRICANTS
LUBRICATING COMPOSITIONS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Summary:A lubricant composition comprising at least 90 wt% of at least one oil soluble polyalkylene glycol (OSP), wherein the OSP comprises at least 40 wt% units derived from butylene oxide and at least 40 wt% units derived from propylene oxide, initiated by one or more initiators selected from monols, diols, and polyols; and at least 0.05 wt% of at least one anti-wear additive; wherein the lubricant composition exhibits a four ball anti-wear of less than or equal to 0.35 mm and an air release value at 50 °C of less than or equal to 1 minute is provided. L'invention concerne une composition lubrifiante comprenant au moins 90 % en poids d'au moins un poly(alkylène glycol) soluble dans l'huile (OSP), l'OSP comprenant au moins 40 % en poids d'unités issues d'oxyde de butylène et au moins 40 % en poids d'unités issues d'oxyde de propylène, amorcée par un ou plusieurs amorceurs choisis parmi les monols, les diols et les polyols ; et au moins 0,05 % en poids d'au moins un additif anti-usure ; la composition lubrifiante présentant une anti-usure à quatre billes inférieure ou égale à 0,35 mm et une valeur de libération d'air à 50°C inférieure ou égale à 1 minute.
Bibliography:Application Number: WO2012US61807