USE OF SURFACTANTS WITH HIGH MOLECULAR WEIGHT FOR IMPROVING THE FILTERABILITY IN HYDRAULIC LUBRICANTS

A hydraulic oil, a predominant amount of an oil having a viscosity suitable for lubrication, and from 0.03% to 0.06% of an agent improving filterability, corresponding to the formula R-Z. Z represents an ester of succinic acid comprising the reaction product of a succinic anhydride and an aliphatic...

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Bibliographic Details
Main Authors CAZIN JACQUES, CLEMENT OLIVIER, BATELIER DOMINIQUE, LE SAUSSE CHRISTOPHE
Format Patent
LanguageEnglish
Published 14.03.2002
Edition7
Subjects
CHEMISTRY
FUELS
INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS
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 hydraulic oil, a predominant amount of an oil having a viscosity suitable for lubrication, and from 0.03% to 0.06% of an agent improving filterability, corresponding to the formula R-Z. Z represents an ester of succinic acid comprising the reaction product of a succinic anhydride and an aliphatic polyhydric alcohol; or a succinimide comprising the reaction product of a succinic anhydride and a polyamine, the said reaction product being treated with an after-treatment agent. R represents a polyolefin having a molecular weight (Mn) of 500 to 2500 and an Mw/Mn ratio of 1 to 5.
Bibliography:Application Number: US19980210224