Institut Francais Du Pe'trole

Institute Francais Du Petrole

Institut Francais Du Petrole, Des Carburants Et Lubrifiants Et

Société De Conception D'équipements Pour L'environnement Et L'instustrie

Société De Conception D'équipements Pour L'environnement Et L'industrie

Maurice Born

Guy Parc

Jacques Lallement

Bruno Delfort

Lucienne Briquet

Daniel Paquer

Thierry Lacome

Pierre Marchand

Bertrand Daoudal

Ourida Aberkane

Nicole Thevenin

Jean-Claude Hipeaux

Jean-Luc Mieloszynski

Agnes Chive

Francoise Dixmier

Guy Barc

Jean-Pierre Durand

Yves Jacquin

Herve Toulhoat

Jacques Garapon

Jacques Denis

Xavier Marze

Francois Audibert

Gabriel De Gaudemaris

Daniel Defives

Jean Luc Mieloszynski

Monique Prigent

Michel Thebault

Bertrand Daqudal

Jean Luc Mielzoszynski

Francedillaoise Dixmier

Bruno Delport

Burno Delfort

Catherine Keromest

Armand Rossi

Valerie Maran

Dai-Nghia Huynh

Dominique Rio

A process for sulfurizing a composition of unsaturated fatty ester is described in which said composition is reacted with elemental sulfur in the presence of a promoter that consists of at least one compound with an amine group and in the presence of water. When the sulfur-containing product is separated from an aqueous phase that contains the compound with an amine group, the latter can be reused for several successive sulfurations without substantial loss of activity of the promoter. The compositions of unsaturated fatty esters can be used as additives for lubricating oils or fats.

Process for sulfurizing unsaturated fatty substances by elementary

Novel colloidal calcium thio-phosphorous products are described which can be obtained by a process comprising adding at least one phosphorus sulphide to colloidal lime in the presence of solvent, then heating the mixture, with stirring, then eliminating the solvent. These products can be used as anti-wear and extreme pressure additives in lubricating oils.

Colloidal thio-phosphorous products derived from colloidal lime, their

New overbased colloidal products that comprise a core of micellized alkali metal or alkaline-earth metal carbonate, surrounded by a ring of at least one surfactant compound that is selected from among the dihydrocarbyl-dithiophosphoryl-alkane-sulfonic acids, and their salts of alkali metals or alkaline-earth metals are described. They are derived from the carbonation of at least one oxide or hydroxide of an alkali metal or alkaline-earth metal that is carried out within an oily medium that contains hydrocarbon in the presence of at least one dihydrocarbyl-dithiophosphoryl-alkane-sulfonic acid that corresponds to general formula: ##STR1## in which R represents a monovalent aliphatic, cycloaliphatic or aromatic radical that contains 1 to 30 carbon atoms and x has a value of 3 to 6, or an alkali metal or alkaline-earth metal salt of such an acid. These colloidal products can be used as detergent additives notably providing anti-wear and extreme-pressure properties in lubricants. Because of the presence in their molecule of dihydrocarbyl-dithiophosphoric groups, they also exhibit anti-oxidizing properties.

Colloidal products, their preparation and their uses

Novel colloidal products are described, containing calcium hydroxide in the center of micelles which are stabilised in an organic medium by a shell of a surfactant, in a reversed micelle. The products are obtained by reacting calcium oxide CaO, calcium hydride CaH.sub.2 or calcium metal with water in an organic medium in the present of a surfactant such as an alkine-earth or alkali metal alkylaryl sulphonate. They are used mainly as synthesis intermediates in reactions requiring lime to be introduced into an organic medium, or as detergent additives in lubricating oils.

Colloidal calcium hydroxide, its preparation and uses

Sulphur-containing substances are derived from mono- or polyethylenic hydrocarbons by sulphurization using elemental sulphur in the presence of an alkali metal carbonate or bicarbonate and in the presence of water and/or at least one alkyleneglycol. The sulphur-containing substances, which may contain 20% to 70% by weight of sulphur, are generally soluble in lubricants to improve antiwear and extreme pressure properties. They can also be used as sulphurization agents, in particular for preparing catalysts for refining petroleum products.

Ethylenic hydrocarbons sulphurized by elemental sulphur in the presence

Colloidal products containing calcium barium and/or magnesium also

Colloidal products are described which comprise micelles of alkaline metals or alkaline-earth metals, held in the colloidal state by at least one alkaline metal or alkaline-earth metal alkyl- or alkylarylsulphonate. The products further comprise micelles of a product containing calcium, phosphorus and sulphur resulting from the in situ reaction of calcium oxide or calcium hydroxide with a phosphorus sulphide, in particular tetraphosphorus decasulphide, and water. These colloidal products are used as antiwear and extreme pressure additives for lubricating greases and oils.

Colloidal alkaline or alkaline-earth carbonates containing a compound of

Sulphur-containing substances are derived from mono- or polyethylenic hydrocarbons by sulphurization using elemental sulphur in the presence of at least one alkali or alkaline-earth metal hydroxide and at least one glycol or polyglycol, or glycol or polyglycol monoether and/or water. Sulphur-containing substances, which may contain 20% to 70% by weight of sulphur, are generally soluble in lubricants to improve antiwear and extreme pressure properties. They can also be used as sulphurization agents, in particular for preparing catalysts for refining petroleum products.

New sulfonated bismuth compounds and the preparation thereof are described. These new compounds can be represented by the following general formulae: ##STR1## where R.sub.1 represents a monovalent linear or branched aliphatic hydrocarbonaceous radical containing 8 to 36 atoms of carbon, and R.sub.2 represents an atom of hydrogen or a monovalent linear or branched aliphatic hydrocarbonaceous radical containing 8 to 36 atoms of carbon. These compounds, which possess surface-active and wear-fighting properties, are used as fuel additives. They can also serve as starting materials in the manufacture of overbased colloidal products usable as lubricant additives by carbonation of at least one calcium, barium, or magnesium oxide or hydroxide, the carbonate formed being kept as a colloidal dispersion in an organic medium by using at least one of the sulfonated bismuth compounds (I) and (II).

Sulfonated bismuth compounds

Anti-wear and high pressure lubricating compositions with a major proportion of lubricating oil and a minor proportion of at least one amine phosphate containing a terminal imide ring result from the reaction, under conditions for the formation of an amine salt, of at least one phosphate having the general formula (I): ##STR1## in which n is equal to 1 or 2, R.sup.1 is a divalent hydrocarbon group with 1 to 32 carbon atoms, R.sup.6 represents a hydrogen atom or a monovalent hydrocarbon group containing usually from 1 to 200 carbon atoms, with at least one amine.

Lubricating compositions containing an amine phosphate with a terminal

Colloidal products according to the invention are obtained by a method comprising a step (a) providing a colloidal product containing at least one alkaline earth metal carbonate in micelle form, optionally reacted with at least one compound selected from alkylsulphonic acids and alkylarylsulphonic acids and salts thereof and long chain aliphatic carboxylic acids and salts thereof such as to modify a proportion of up to 70% of the basicity reserve of the original colloidal product and a step (b) in which the residual basicity reserve is neutralized by at least one acid containing at least one element selected from boron, phosphorus and sulphur. These colloidal products can be used as wear resistance and extreme pressure additives in lubricants.

Colloidal products containing calcium and/or magnesium, as well as boron

Colloidal products are described which contain an element selected from sulphur, phosphorus and possibly boron, as well as an element chosen from metal alkalis, alkaline earth metals and zinc, micellized in at least one detergent agent. They can be obtained in micelle form by reaction of at least one mineral acid or organic acid, containing sulphur and/or phosphorus and possibly an acid containing boron, these acids being directly introduced or formed in situ with at least one basic derivative containing a alkali metal and/or an alkaline earth metal and/or zinc, in the presence of at least one surface active agent. The colloidal products can be used as wear resistance and extreme pressure additives for lubricants.

Colloidal products containing sulfur and/or phosphorus and/or boron,

Colloidal products containing calcium and/or magnesium plus sulfur and nitrogen are obtained by at least partial neutralization of the basicity reserve of at least one overbasic sulfonate charged with calcium carbonate and/or with magnesium carbonate dispersed within micelles. The neutralization is by means of at least one functional dicarboxylic acid of the formula: ##STR1## where each symbol a is a whole number from 1 to 8, x and z are each a number from 1 to 4, y is a whole number from 0 to 4 and n is 1 or 2. These products can be used as additives in lubricating oils.

Colloidal products containing calcium and/or magnesium, as well as

Useful as additive for lubricating oils are novel phosphosulphur compounds in accordance with the general formula (I):

Process for the preparation of phosphosulfide compounds useful as oil

Novel sulfurized compounds, their preparation and use. The compounds are based on the general formula

New sulfured compounds, their preparation and their use as additives for

Growing community of inventors

Nanterre, France

Maurice Born