Polysulphide EP additives for lubricating oils etc. prepd

Prodn. of an EP additive of formula (I) RI, RII,...RV = H or 1-40C open-chain or cyclic, (un)satd. hydrocarbyl or their derivs., Ar = independently-chosen mono- or polynuclear aromatic hydrocarbyl or their derivs., b = 1-5, c = 2-10, d = 1-9, x = 1-6, by reacting organic chloro-cpds. of formula (II)...

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Main Authors PETER BENCZE, ZOLTAN DECSY, SANDOR BORZSONYI, JANOS MOGER, REZSO CSIKOS, PETER L. FARKAS, TIBOR VARGA, KATALIN BELAFI, NATA RETHY
Format Patent
LanguageEnglish
Italian
Published 20.12.1989
Edition4
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:Prodn. of an EP additive of formula (I) RI, RII,...RV = H or 1-40C open-chain or cyclic, (un)satd. hydrocarbyl or their derivs., Ar = independently-chosen mono- or polynuclear aromatic hydrocarbyl or their derivs., b = 1-5, c = 2-10, d = 1-9, x = 1-6, by reacting organic chloro-cpds. of formula (II) a = 1-5, with metallic sulphides of formula MnSx, M = alkali(ne earth) metal, n = 1 or 2, x = 1-6, is characterised in that (i) hydrocarbons of formula RI-V-Arb are chloromethylated with a soln. of (para)formaldehyde and HCl in aq. soln. and/or HCl gas, possibly with a catalyst, adjusting the ratio monochlorinated/dichlorinated cpds. to at least 7 when preparing a mixt. of EP additives, or adjusting the ratio monochlorinated/(di- and poly-chlorinated) cpds. to at least 3 when preparing EP additives for lubricating oils, hydraulic oils, lubricant greases and metalworking coolant/lubricants; (ii) the chloromethylated prod. is reacted with the metal sulphide MnSx; and opt. (iii) the prod. is purified.
Bibliography:Application Number: IT19860021318