Atochem

Societe Atochem

Marc Hermant

Dominique Basset

Pierre Durual

Laurent Germanaud

Jean-Claude Fayard

Charles Laviron

Jean-Michel Martin

Robert Thermet

Jean-Claude Razet

Methods for improving the anti-friction and wear-reducing properties of lubricating oils by adding to such oils polyfluoro chain-containing amines of the formula ##STR1## or the commercially available mixtures of such materials, wherein n is an integer from 1 to 20, a is two or four, R.sub.2 is hydrogen or a lower alkyl group, and R.sub.1 and Z are:

Use of amines with polyfluorinated chain as lubricant additives

The invention relates to new polyfluorinated compounds which are usable as anti-wear additives for lubricants. These compounds are of general formula: ##STR1## in which R.sub.F is a perfluorinated radical, X denotes a divalent linkage--(CH.sub.2 CF.sub.2).sub.a (CH.sub.2).sub.b --, --CF.dbd.CH--CH.sub.2 -- or --CFH--CH.sub.2 CH.sub.2 --, a is an integer ranging from 0 to 10, b is an integer ranging from 1 to 4 but equal to 2 if a is other than zero, R.sub.1 denotes a hydrogen atom or an alkyl radical, R.sub.2 denotes a hydrogen atom or a methyl radical and R.sub.3 denotes an alkyl radical. They are prepared by condensing an amino alcohol, R.sub.F --X--NH--CH.sub.2 CH(R.sub.1)OH, with an alkyl ester of an unsaturated carboxylic acid, CH.sub.2 .dbd.C(R.sub.2)--COOR.sub.3.

Polyfluorinated compounds, their preparation and their use as lubricant

The invention relates to new polyfluorinated compounds which are usable as anti-wear additives for lubricants. These compounds are of general formula: ##STR1## in which R.sub.F is a perfluoroalkyl radical, R.sub.1 and R.sub.3 each denote a hydrogen atom or an alkyl, cycloalkyl or aryl radical, R.sub.2 and R.sub.4 each denote a hydrogen atom or an acyl residue, m equals 0 or 1 and X denotes a hydrogen atom or a 2-hydroxy-1-phenylethyl group. They are prepared by hydrogenation of amino alcohols of formula:

Polyfluorinated amino alcohols and their esters, preparation of these

In order to improve the wear resistance properties of lubricants, at least one compound of the following formula is incorporated therein: ##STR1## Rf is a perfluorinated radical, a=0 to 10,

Lubricants and new polyfluorinated compounds which can be used as

A lubricant composition comprising a lubricating oil having dispersed therein particles of lithium fluoride, calcium fluoride, and barium fluoride, or mixtures thereof.

Growing community of inventors

Cormeilles-en-Parisis, France

Marc Hermant