Abstract: A bitumen/polymer composition is provided exhibiting an adhesiveness which is retained on storage at elevated temperatures. Also provided is a process for the preparation of such a composition and to the application of this composition to the production of coatings and in particular of road surface dressings, asphalt mixes or seal coatings.
Abstract: Disclosed are polymers of average molecular weight ranging from 400 to 20,000 comprising thiosubstituted groups per molecule and resulting from the reaction, in the presence of an addition catalyst, of at least one compound with a thiol function, having 1 to 60 carbon atoms per molecule, with an unsaturated polyester resulting from the condensation of an aliphatic epoxide with an unsaturated aliphatic dicarboxylic compound comprising at least one ethylenic unsaturation in the alpha position of one of the carboxyl groups. Also disclosed are middle distillate compositions having a distillation range from 150.degree. to 450.degree. C. and comprising a minor proportion, preferably from 0.001 to 2% by weight, of at least one of the polymers defined hereinabove.
Type:
Grant
Filed:
May 10, 1991
Date of Patent:
May 12, 1992
Assignees:
Institut Francais du Petrole, Elf France
Inventors:
Jacques Garapon, Remi Touet, Bernard Damin, Beatrice Debled
Abstract: Disclosed is a polymer of average molecular weight ranging from 400 to 20,000 comprising amino substituted groups in its molecule and resulting from the reaction of at least one compound with a primary amine function having 1 to 60 carbon atoms with an unsaturated polyester resulting from the condensation of an unsaturated aliphatic dicarboxylic compound, comprising at least one ethylenic unsaturation in the alpha position of one of the carboxyl groups, with at least one epoxidated compound having 4 to 62 carbon atoms chosen from ethers and esters of epoxyalcohols and esters of epoxyacids.Also disclosed is a middle distillate composition having a distillation range from 150.degree. to 450.degree. C. and comprising a minor proportion, preferably from 0.001 to 2% in weight, of at least one of the polymers defined hereinabove.
Type:
Grant
Filed:
November 27, 1990
Date of Patent:
April 21, 1992
Assignees:
Institut Francais du Petrole, Elf France
Inventors:
Jacques Denis, Jacques Garapon, Bernard Damin, Robert Leger
Abstract: The object of the invention is a catalytic composition comprising titanium and phosphorus and resulting from the contacting of at least one titanate with at least one quaternary "onium" salt of an acid selected from the group consisting of phosphoric acid and the phosphonic acids of formula R.sup.7 H.sub.2 PO.sub.3 in which R.sup.7 is a hydrocarbon group having 1 to 38 atoms of carbon and the "onium" remainder is a remainder of formula (R.sup.8 R.sup.9 R.sup.10 R.sup.11 M).sup.+ in which M is an element from the group VA of the periodic table of elements, preferably nitrogen or phosphorous, and R.sup.8, R.sup.9, R.sup.10 and R.sup.11, identical or different, represent each an atom of hydrogen or a hydrocarbon group having 1 to 38 atoms of carbon.This catalytic composition is utilizable for producing asters and polyesters from epoxides and carboxylic acid anhydrides.
Type:
Grant
Filed:
October 16, 1990
Date of Patent:
April 14, 1992
Assignees:
Institut Francais du Petrol, L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, Elf France
Inventors:
Jacques Garapon, Isabelle Muller, Remi Touet, Catherine Huet, Bernard Damin
Abstract: A process is provided for the preparation of an overalkalinized additive for lubricant oils which consists of carbonating a reaction mixture composed of at least one detergent, one derivative of alkaline or alkaline earth metal, at least one nitrogenized and/or oxygenated promoter in a diluent oil and a hydrocarbonated solvent, and wherein the operation is carried out in the presence of at least one boron derivative. Also provided, the additives thus obtained and lubricant compositions containing the additive. These additives are homogeneous and stable, and have very good antiwear properties.
Type:
Grant
Filed:
June 29, 1990
Date of Patent:
March 24, 1992
Assignee:
Elf France
Inventors:
Pierre Hoornaert, Claude Rey, Roger Gallo, Catherine Belle
Abstract: Process for the synthesis of precursors of molecular sieves of the silicoaluminophosphate type by heating to .gtoreq.100.degree. C. under autogenous pressure a reaction mixture containing sources of silicon, aluminum and phosphorus in the presence of an organic structuring agent and of hydrofluoric acid. The precursor obtained can be converted into molecular sieve by calcination. Molecular sieves of the silicoaluminophosphate type can be used as adsorbants and catalysts for the conversion of hydrocarbons.
Type:
Grant
Filed:
March 30, 1990
Date of Patent:
March 17, 1992
Assignee:
Elf France
Inventors:
Francoise Guth, Henri Kessler, Thierry Des Courieres
Abstract: A device for dispersing a gaseous phase in a liquid phase comprises at least one Venturi ejector with a vertical or inclined axis, composed of a mixer head (1) for admitting the liquid, a neck (2) for admitting the gas, and an injector tube (3). The injector tube is prolonged by a chamber (5) whose diameter is equal to or greater than that of the injector tube with which it possibly merges. Also described is the application of this device to treatments such as chemical, biochemical or metabolic reactions involving the transfer of a gas to a liquid phase.
Type:
Grant
Filed:
July 21, 1989
Date of Patent:
December 17, 1991
Assignee:
Elf France
Inventors:
Jacques Bousquet, Alain Catros, Le Xuan Huynh, Alain Secq
Abstract: This invention relates to additives to lubricants with antiwear and extreme-pressure effect consisting of asymmetric dihydrocarbyl polysulphides containing a hydrocarbyl polysulphide group R-S.sub.x - in a vicinal position of a secondary or tertiary alcohol, and to lubricating compositions containing these additives. The additives are prepared by reaction of a basic salt of a hydrocarbyl (poly)sulphide either with a compound containing at least one epoxy group or with an alpha-hydroxylated organic thiosulphate.
Type:
Grant
Filed:
May 14, 1990
Date of Patent:
November 5, 1991
Assignee:
Elf France
Inventors:
Laurent Germanaud, Patrick Azorin, Lhopital Michel
Abstract: Disclosed is a composition resulting, in a first stage, from the reaction of at least one alkenyl or polyalkenylsuccinic acid or anhydride on at least one 1-(2-hydroxyethyl)-imidazoline substituted in the 2-position by a linear or branched alkyl or alkenyl radical, with 1 to 25 atoms of carbon in an imidazoline to succinic derivative molar ratio of 0.1:1 to 0.9:1 with the removal of at least 0.15 mole of water per mole of imidazoline, and then, in a second stage, from the reaction of the product obtained in the first stage on at least one polyamine in an amount representing at least 0.1 mole per mole of the succinic derivative utilized in the first stage.Also disclosed are methods for the utilization of these compositions as multifunction additives in engine fuels having as a base hydrocarbons or a mixture of hydrocarbons and at least one oxygen compound selected from the group constituted by alcohols and ethers.
Type:
Grant
Filed:
June 29, 1989
Date of Patent:
October 1, 1991
Assignees:
Institut Francais du Petrole, Elf France
Inventors:
Xavier Montagne, Remi Touet, Philippe Mullard, Daniele Eber
Abstract: Braking device for a rotary element such as a vehicle wheel in which is provided at least two distinct braking assemblies for the braking of a single wheel or axle, and which are connected to distinct braking pressure generators which have a ratio between their actuating force by an actuating member and the pressure generated which is such that, for small actuating forces, only the pressing member of the first assembly is actuated, up to a transition point of the actuating force, from which the pressing members of the first and the second assemblies are simultaneously actuated, the device being applied to highly moderable braking of vehicles adapted for high speeds, such as motorcycles.
Abstract: The present invention concerns a process for preparing a basic additive for lubricating oils having an antiwear and detergent effect, the additive thus obtained and a lubricating composition containing the additive. The process consists of contacting an amino-acid in solution or in dispersion in the oil with a detergent, an alkaline-earth metal derivative, carbon dioxide in diluent oil, a hydrocarbon-based solvent, and a polar solvent in the presence of a nitrogen-based basic derivative.
Type:
Grant
Filed:
May 9, 1989
Date of Patent:
August 20, 1991
Assignee:
Elf France
Inventors:
Bernard Damin, Daniele Eber, Roger J. Gallo, Paul Maldonado, Simon Paley
Abstract: Disclosed are polymers of average molecular weight ranging from 400 to 20,000 comprising thiosubstituted groups per molecule and resulting from the reaction, in the presence of an addition catalyst, of at least one compound with a thiol function, having 1 to 60 carbon atoms per molecule, with an unsaturated polyester resulting from the condensation of an aliphatic epoxide with an unsaturated aliphatic dicarboxylic compound comprising at least one ethylenic unsaturation in the alpha position of one of the carboxyl groups. Also disclosed are middle distillate compositions having a distillation range from 150.degree. to 450.degree. C. and comprising a minor proportion, preferably from 0.001 to 2% by weight, of at least one of the polymers defined hereinabove.
Type:
Grant
Filed:
February 6, 1989
Date of Patent:
August 6, 1991
Assignees:
Institut Francais du Petrole, Elf France
Inventors:
Jacques Garapon, Remi Touet, Bernard Damin, Beatrice Debled
Abstract: The invention relates to a process for condensing at least one epoxide on at least one cyclic anhydride of a dicarboxylic acid in the presence of a catalyst consisting of at least one titanium nitrogenous complex of the formula (I) Ti(OR.sup.1).sub.m (OR.sup.2 ).sub.n (OR.sup.2 ).sub.p Lg in which R.sup.1, R.sup.2 and R.sup.3 each independently represents one hydrocarbon group, L represents the remainder of a nitrogenous compound, the sum of m+n+p+q is 4, q is an integer from 1 to 4 and m, n and p are independently each 0 or 1. The process allows for obtaining a perfectly alternating polyester.
Type:
Grant
Filed:
March 12, 1990
Date of Patent:
July 9, 1991
Assignees:
Institut Francais du Petrole, L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, ELF France
Inventors:
Valerie Bagrel, Jacques Garapon, Remi Touet, Catherine Huet, Bernard Damin
Abstract: The invention concerns a process and apparatus for manufacturing methyl tert-butyl ether (MTBE) by reacting methanol with an isobutene-containing hydrocarbon mixture.This process is characterized by the steps of:introducing the reactants into a reaction-distillation zone containing at least two superposed and non-contiguous fixed beds (2a, 2b) of catalyst of the sulfonated resin type, wherein passageways are provided for a vapor phase, at least one distillation tray (4a), at least one liquid redistribution tray (5),maintaining distillation conditions in the zone so as to have a descending liquid phase and an ascending vapor phase,maintaining a continuous liquid phase in the lower part of the beds,discharging a vapor phase containing a high proportion of unconverted hydrocarbons from the top (8) of the zone, andwithdrawing a liquid phase of high MTBE content from the bottom (10) of the zone.
Type:
Grant
Filed:
May 24, 1989
Date of Patent:
June 25, 1991
Assignees:
Institut Francais du Petrole, Elf France
Inventors:
Dang Vu Quang, Pierre Amigues, Jean-Ferdinand Gaillard
Abstract: Lubricating oil additives are provided which have extreme pressure, antiwear and antioxidant properties. The additives are dithiophosphorous disymmetric bisulphides of the formula: ##STR1## wherein X and Y represent an oxygen or sulphur atom or a methylene group and R.sub.1 and R.sub.2 and R.sub.3 represent a hydrocarbon radical, a polyether, a polythioether or a hydrogen atom.The invention also relates to a process for their preparation and to lubricating compositions containing the additives.
Abstract: A process for condensing at least one aliphatic epoxide having at least 8 atoms of carbon in its molecule on at least one cyclic anhydride of a dicarboxylic acid in the presence of a catalyst consisting of at least one titanium complex of general formula (I) Ti(OR).sub.2 (L).sub.2 in which each R group independently represents one hydrocarbon group with 1 to 10 atoms of carbon and each L group represents a ligand of the diketonic beta type or of the keto-ester beta.
Type:
Grant
Filed:
March 12, 1990
Date of Patent:
May 28, 1991
Assignees:
Institut Francais du Petrole, L'Air Liquide Societe Anonyme pour L'Etude et L'Exploitation des Procedes Georges Claude, ELF France
Inventors:
Valerie Bagrel, Jacques Garapon, Remi Touet, Catherine Huet, Bernard Damin
Abstract: The invention relates to a process and apparatus for manufacturing methyl tert-butyl ether (MTBE) by reacting methanol with isobutene-containing hydrocarbons in a reaction zone having alternate beds of sulfonated resin catalyst and catalyst-free distillation zones wherein the zones also contain liquid redistribution plates.
Type:
Grant
Filed:
May 24, 1989
Date of Patent:
May 7, 1991
Assignees:
Institut Francais Du Petrole, Elf France
Inventors:
Jean-Luc Nocca, Jacques Leonard, Jean-Ferdinand Gaillard, Pierre Amigues
Abstract: The rotary axle of the support arm device is adapted to be maintained in position rigidly and in adjustable manner at the free end of the arm and the free end of the arm comprise plane and generally axial bearing surfaces adapted to contact corresponding bearing surfaces directed generally transversally and provided on two rings of a removable bracket piece in order to allow a rigid blocking of this bracket piece on the free end of the arm after adjusting the position and the device is applied when an easy adjusting of the chain tension is required, especially for a rear wheel of a motorcycle.
Abstract: The present invention concerns a process and a device for determining the cloud point of a diesel oil, comprising a light source and, aligned on a single axis, a diaphragm comprising a central hole on the said axis, an objective forming the image of the hole on a light trap, and behind the screen, a wide-diameter photoelectric detector intended to deliver an electric current when it receives a light flux, and, disposed between the objective and the screen, a cell containing a diesel oil sample to be analyzed, means for controlling the temperature of this sample being associated to the said cell.
Type:
Grant
Filed:
June 7, 1985
Date of Patent:
April 16, 1991
Assignee:
Elf France
Inventors:
Dominque Laurent, Gerard Fortunato, Bernard Damin, Marcel Napoleon
Abstract: Polymer of average molecular weight ranging from 400 to 20 000 comprising amino substituted groups in its molecule and resulting from the reaction of at least one compound with a primary amine function having 1 to 60 carbon atoms with an unsaturated polyester resulting from the condensation of an unsaturated aliphatic dicarboxylic compound, comprising at least one ethylenic unsaturation in the alpha position of one of the carboxyl groups, with at least one epoxidated compound having 4 to 62 carbon atoms chosen from ethers and esters of epoxyalcohols and esters of epoxyacids.Middle distillate composition having a distillation range from 150.degree. to 450.degree. C. and comprising a minor proportion, preferably from 0.001 to 2% in weight, of at least one of the polymers defined hereinabove.
Type:
Grant
Filed:
February 3, 1989
Date of Patent:
March 19, 1991
Assignees:
Institut Francais du Petrole, Elf France
Inventors:
Jacques Denis, Jacques Garapon, Bernard Damin, Robert Leger