METHOD OF MAKING THE ADMIXTURES FOR MINERAL OR SYNTHETIC LUBRICATING OILS

An additive, adapted to improve the viscosity index of a mineral or synthetic lubricating oil, is prepared from polymeric material of very high viscosity boiling above 175 DEG C, and obtained through polymerization of normal alpha-olefines having the general formula R-CH = CH2, wherein R is an alkyl...

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Bibliographic Details
Main Authors FLORIS,TELEMACO,IT, GIROTTI,PIERLEONE,IT, TESEI,RENATO,IT
Format Patent
LanguageEnglish
Published 15.09.1981
Edition3
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
FUELS
INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS
LUBRICANTS
LUBRICATING COMPOSITIONS
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Summary:An additive, adapted to improve the viscosity index of a mineral or synthetic lubricating oil, is prepared from polymeric material of very high viscosity boiling above 175 DEG C, and obtained through polymerization of normal alpha-olefines having the general formula R-CH = CH2, wherein R is an alkyl radical containing from 2 to 16 carbon atoms, in the presence of a TiCl4/polyiminoalane catalyst, in a substantially inert atmosphere which may contain hydrogen up to a manometer pressure of 1 kg/cm2, by distilling said polymeric material so that the fraction boiling at a temperature below 350 DEG C at atmospheric pressure is removed therefrom, and catalytically hydrogenating the balance thereof to produce the desired end product.
Bibliography:Application Number: CS19740001797