Centre National De La Recherche Scientifique

Institut Francais Du Pe'trole

Atochem

Societe Atochem

Laurent Germanaud

Marc Hermant

Bernard Sillion

Pierre Le Perchec

Pierre Durual

Jean-Claude Fayard

Dominique Basset

Sylvain Brunel

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

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

New surface-active compounds of the sulfobetaines group are manufactured. They comply with the general formula: ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 is substantially a hydrocarbon radical, each of R.sub.4 and R.sub.5 is a hydrogen atom or substantially a hydrocarbon radical and R.sub.6 is a hydrogen atom or a hydrocarbon radical, R.sub.1 to R.sub.6 radicals containing together from 12 to 30 carbon atoms, n is an integer equal to 2 to 3, Z may be a CH.sub.3 radical or a hydroxy group, p may be 0 or 1 with, when Z is a hydroxy group and p is equal to 1, a value of 1 for m and for q; when Z is a methyl radical, with a value of 1 for p, a value of 2 for m and a value of 0 or 1 for q and, when p=0, a value of 2, 3 or 4 for the sum (m+q). These new surfactants are useful in enhanced oil recovery as micellar systems consisting of aqueous solutions and microemulsions.

Surface-active compounds of the sulfobetaines family, their manufacture

Growing community of inventors

Irigny, France

Laurent Germanaud