Abstract: The invention relates to a combination of compounds and a process using such combination useful for reducing or preventing coke formation in thermal cracking furnaces such as ethylene steam crackers. The combination is comprised of one or more compound of the formula R—Sx—R? and one or more compound selected from the following group: R1R2CS3; R1R2C?CR3R4; RSH; R1SxR2; R1R2CH2; R1R2R3R4(C4S); and R1R2R3R4R5R6Si2O.

Abstract: The present invention relates to a continuous process for the fluorination of perchloroethylene (PER) in the gas phase in a single stage with hydrofluoric acid (HF) in the presence of a catalyst to give, as major product, pentafluoroethane. The process is characterized in that it is carried out at a temperature of between 280 and 430° C. and with an HF/PER molar ratio of greater than or equal to 20.

Abstract: The subject of the invention is a composition comprising (i) from 10% to 25% by weight of 1,1,1,3,3-pentafluorobutane, preferably 16% to 24% by weight of 1,1,1,3,3-pentafluorobutane; (ii) from 62% to 70% by weight of trans-dichloroethylene, preferably from 63% to 68% by weight of trans-dichloroethylene, (iii) from 10% to 21% by weight of nonafluoromethoxybutane, preferably from 11% to 17% by weight of nonafluoromethoxybutane; and; (iv) from 1% to 4% by weight of nonafluoroethoxybutane, preferably from 2% to 4% by weight of nonafluoroethoxybutane. The subject matter of the invention is also to the use of said composition as a cleaning, solvent, degreasing, defluxing or drying agent.

Abstract: The invention concerns the use of at least one diol and/or of at least one trial as a an additive to dimethylsulfoxide (DMSO®) in order to lower the crystallization point of same. The DMSO formulation is used in combination with the aforementioned additive as a paint-stripping composition, a surface-cleaning composition, a graffiti-cleaning composition, a surface-cleaning composition in the microelectronics field as a photoresist stripping agent, a DMSO-based agrochemical composition or as a constituent of an aforementioned composition, as a solvent for dissolving polymers, or as a constituent of a composition that is usable in the field of cosmetology or pharmacy.

Abstract: A method of decreasing the roiling resistance of a tire formed from a sulfur-vulcanized elastomeric by combining at least one diene elastomer and at least one reinforcing filler, with an effective amount of a coupling agent consisting of a combination of: 10 to 90%, of a product (I) consisting of a blend of poly(alkylphenol) polysulfides of formula: in which: R is an alkyl radical containing 1 to 20 carbon atoms; n and n? are two integers, which may be identical or different, from 1 to 8; p is an integer from 0 to 50; and 10 to 90% of a product (II) consisting of bis(triethoxysilylpropyl)tetrasulfide, to form a mixture; thereafter working said mixture; and thereafter heating said mixture to vulcanize said mixture. 90% of bis(triethoxysilylpropyl)tetrasulfide.

Abstract: The invention concerns novel bituminous products, as well as novel aqueous emulsions of bituminous products, mixtures thereof with coated granules, useful for sealing application, building and maintaining road surfaces, sidewalks and runways, road surfaces, sidewalks, bicycle paths, parking lots and runways.

Abstract: The present invention relates to a conductive carbon nanotube-polymer composite, comprising carbon nanotubes, and a mixture of polymers in a form of coalesced polymer particles, wherein the mixture of polymer particles in their non coalesced form is defined by the presence of at least two population of polymer particles having a size distribution which is at least bimodal.

Abstract: The invention relates to a method for preparing a living polymer comprising methacrylic and/or methacrylate units using a monofunctional or polyfunctional alkoxyamine consisting in polymerising one or several types of methacrylic an/or methacrylate units.

Abstract: The invention relates to a method for producing acrylic acid in one step by an oxydehydration reaction of glycerol in the presence of molecular oxygen. The reaction preferably carried out in gaseous phase in the presence of a suitable catalyst.

Abstract: Materials for making apparatus and a method of inhibiting polymerization during manufacture, purification, handling and storage of subject ethylenically unsaturated monomers are disclosed. In particular, copper or metals containing copper, in the presence of oxygen, have inhibit undesired polymerization resulting in polymer fouling in apparatus used during the manufacture, purification, handling and storage of the monomers, such as acrylic acid, methacrylic acid, acrylic acid esters and methacrylic acid esters. The copper or copper alloys as described herein, in the presence of an oxygen-containing gas, exhibit self-inhibiting surface characteristics when used to make at least a portion of the apparatus to inhibit polymerization of the monomers in contact with the portion of the apparatus including such copper-containing metal.

Abstract: The present invention relates to acrylic block copolymers synthesized by a controlled free-radical process, and their use as low temperature flow modifiers in oil-based compositions. They are especially useful in modifying the low temperature flow behavior in lubricating oils. The acrylic copolymers are especially useful as pour point depressants in lubricating oil.

Abstract: This invention relates to a solid divided composition comprising grains whose mean size is greater than 25 ?m and less than 2.5 mm, wherein each grain is provided with a solid porous core and a homogeneous continuous metal layer consisting of at least one type of transition non-oxidised metal and extending along a gangue coating the core in such a way that pores are inaccessible. A method for the production of said composition and for the use thereof in the form of a solid catalyst is also disclosed.

Abstract: The invention relates to the field of solvents. The invention relates more particularly to a composition based on 1,1,1,3,3-pentafluorobutane (HFC-365 mfc). The present invention also relates to a process for dissolving oil.

Abstract: The invention relates to a method for preparing acrylic acid from propylene, comprising the oxidation of propylene to acrolein and a second step comprising the oxidation of acrolein to acrylic acid, including a glycerol dehydration step preformed in the presence of a gas containing propylene and, more specifically, in the presence of the reaction gas originating from the propylene to acrolein oxidation step. The inventive method enables the use, in part, of renewable raw material, while increasing acrylic acid production.

Abstract: The present invention relates to a composition based on trans-1,2-dichloroethylene. A subject-matter of the invention is more particularly a nonflammable composition comprising trans-1,2-dichloroethylene and at least two hydrofluorocarbons and its uses.

Abstract: The invention relates to a polymer material comprising 99 to 20 parts by weight of polymer(s), 0.1 to 80 parts by weight of carbon nanotubes, and 0.05 to 80 parts by weight of at least one type of dispersant selected from A-B-C, B-C and/or C-B-C block copolymers, wherein each block is bonded to the other by means of a covalent bond, C is a chemical and/or physical interaction with the polymer material and in preferably is miscible therwith, B is not miscible with the polymer material and with the block B and the glass transition temperature thereof. Tg is less than the polymer material use temperature, A is not miscible with the polymer material and with the blocks B and the block C and the Tg or the fusion temperature Tf is greater than the Tg of B.

Abstract: The present invention relates to the use of poly acrylic and/or methacrylic macroinitiators in the free radical addition reaction of vinyl aromatic monomers to improve the properties of the resulting copolymer and/or composite. More particularly, the present invention relates to the production of poly acrylic and/or poly methacrylic macroinitiators having nitroxyl end groups. Using such macroinitiators in the free radical addition reaction of vinyl aromatics such as polystyrene compatibilizes the acrylic monomer in the vinyl aromatic matrix thereby improving the properties of the resulting polymer.

Abstract: The invention relates to scorch prevention and, more specifically, to a composition which comprises a nitroxide and at least one organic peroxide and which can be used to delay scorching prior to crosslinking of thermoplastic compositions and/or elastomers. The invention also relates to a crosslinkable composition and to a crosslinking method.

Abstract: Composition which can be used in particular as odorant for a gaseous fuel, more particularly natural gas, comprising: from 0.1 to 49.9% of an alkyl sulphide (I) of formula: R1—S—R2 ?in which R1 and R2, which are identical or different, represent: an alkyl radical comprising from 1 to 4 carbon atoms; or R1 and R2, taken with the sulphur atom to which they are attached, represent a saturated or unsaturated ring comprising from 3 to 5 carbon atoms which is optionally substituted by a C1-C4 alkyl or C1-C4 alkenyl radical; from 50 to 99.8% of an alkyl acrylate (II), the alkyl radical of which comprises from 1 to 12 carbon atoms, preferably from 1 to 8; from 0.001 to 0.1 part by weight of a compound (III) which inhibits the polymerization of the alkyl acrylate (II).

Abstract: The present invention relates to a composition based on 1,1,1,3,3-pentafluorobutane (HFC-365 mfc), that can be used in deposition, cleaning, degreasing and drying applications. Its object is also a fluid for cleaning internal heat-transfer systems. The object of the present invention is also a method for dissolving oil and for cleaning.