Abstract: In order to fix a toner to a recording substrate in a document printer or copier, the recording substrate on which the toner is deposited is brought into contact with a chemical fixing agent in the gaseous state containing a C.sub.3 -C.sub.6 hydrofluorocarbon and, preferably, a cosolvent.

Abstract: Process for the stabilization of compositions containing hydrofluoroalkanes by addition of at least one salt of at least one metal chosen from lithium and/or the alkaline-earth metals in a sufficient quantity to stabilize the hydrofluoroalkanes and stabilized compositions containing hydrofluoroalkanes.

Abstract: Compositions based on 1,1-dichloro-1-fluoroethane and a surfactant comprising at least one imidazoline, which are usable for removing water from a solid surface.

Abstract: Stabilized compositions comprising 1,1-dichloro-1-fluoroethane (HFA-141b), a styrene derivative and a co-stabilizing agent chosen from alcohols containing less than 3 hydroxyl groups and non-functionalized alkenes. These compositions may especially be used in premixes for polyurethane foams.

Abstract: Hydrofluoroalkanes are effectively stabilized against degradation caused by Lewis acids by addition of 0.001 to less than 0.1% by weight of at least one C.sub.1 -C.sub.2 alcohol and/or of 0.001% to 0.5% of a C.sub.5 -C.sub.6 unsaturated hydrocarbon.

Abstract: The invention relates to compositions comprising 1,1,1,3,3-pentafluorobutane, 1,2-dichloroethylene and optionally a C1-C3 alkanol. These compositions can be used especially as solvents for cleaning and defluxing electronic components and for degreasing metals.

Abstract: The invention relates to compositions containing difluoromethoxy-2,2,2-trifluoroethane and an alcohol. These compositions can be used especially as solvent for cleaning electronic components and for degreasing metals.

Abstract: Compositions consisting essentially of 1,1-dichloro-1-fluoroethane and at least one stabilizing agent chosen from epoxides and hydrocarbons substituted by a nitro group. These compositions can especially be used as cleaning agent and as blowing agent for polyurethane foams.

Abstract: Compositions comprising at least one hydrofluoroalkane and at least one stabilizing agent chosen from quinones and compounds containing a nitroso group, added in an amount sufficient to stabilize the hydrofluoroalkanes. These compositions can especially be used in premixtures for polyurethane foams.

Abstract: The invention relates to a process for preparing 1,1-dichloro-1,3,3,3-tetrafluoropropane by reacting, in the liquid phase, 1,1,1,3,3,3-hexachloropropane with hydrogen fluoride, in the presence of a catalyst.

Abstract: The invention relates to azeotropic and pseudoazeotropic compositions containing isoflurane with a lower alcohol or an ester. These compositions can be used in particular as a solvent for cleaning electronic components and for degreasing metals.

Abstract: The invention relates to azeotropic and pseudoazeotropic compositions comprising difluoromethoxy-2,2,2-trifluoroethane with 2,2-dichloro-1,1,1-trifluoroethane or with 1,1-dichloro-1-fluoroethane. These compositions can be employed as solvents, especially for cleaning electronic components and for degreasing metals, as blowing agents, especially for the preparation of polyurethane foams, or as refrigerants.

Abstract: A composition composed of 1-chloro-2,2,2-trifluoroethyl difluoromethyl ether and at least one surface-active substance and the use of such a composition for removing water from surfaces of objects of diverse material and type are described.

Abstract: A composition including from 40 to 55 mol % of 1,1,1,,2-tetrafluoroethane and from 45 to 60 mol % of methyl chloride; and a composition including from 68 to 75 mol % of 1,1,1,2-tetrafluoroethane and from 25 to 32 mol % of methyl chloride. These compositions are useful as porogenic agents for polystyrene, as refrigerating fluids, and as blowing agents for polyurethane and polyolefin foams.

Abstract: The invention relates to flame-retardant rigid polyurethane foams produced using halogenated polyetherpolyols and at least one blowing agent chosen from 1,1-dichloro-1-fluoroethane and 1,1,1-trifluoro-2,2-dichloroethane in the presence of ethylene glycol. It also relates to compositions intended for their manufacture and to a process for manufacturing them.The rigid foams according to the invention exhibit an improved fire resistance and an improved dimensional stability.

Abstract: In thermoemissive cathodes for cathode ray tubes, in particular filament heated barium-calcium-strontium oxide cathodes, to give sturdiness to the filament and its alumina sheath in the presence of vibrations which might damage this sheath, it has been the practice to use an insulated reinforcing strip, soldered to the cathode tube, which restricts the movement of the filament during vibration. This method entails high manufacturing costs for mediocre results. The invention proposes to use a cathode, comprising a tube made of refractory metal closed by a refractory plug. The tube is filled with an alumina powder which is sintered before covering the plug with a standard emitting capsule of active nickel coated with metal oxides. The sintered alumina powder provides high cohesion between the filament and the inner wall of the tube. Excellent resistance to vibrations is obtained.

Abstract: The present invention concerns new triglycerides of Formula I: ##STR1## wherein R represents an acyl fragment of a polyunsaturated fatty acid containing 18 to 22 carbon atoms, the acyl fragment being capable of being oxidized, however, R cannot represent the acyl fragment of eicosatetrayn-5, 8, 11, 14-oic acid, and wherein n represents an integer varying from 2 to 16; a process for their preparation, their dietetic and therapeutic applications and compositions containing them.

Abstract: The present invention concerns new triglycerides of Formula I: ##STR1## wherein R represents an acyl fragment of a polyunsaturated fatty acid containing 18 to 22 carbon atoms, the acyl fragment being capable of being oxidized, however, R cannot represent the acyl fragment of eicosatetrayn-5, 8, 11, 14-oic acid, and wherein n represents an integer varying from 2 to 16; a process for their preparation, their dietetic and therapeutic applications and compositions containing them.

Abstract: The present invention concerns new triglycerides of Formula I: ##STR1## wherein R represents an acyl fragment of a polyunsaturated fatty acid containing 18 to 22 carbon atoms, the acyl fragment being capable of being oxidized, however, R cannot represent the acyl fragment of eicosatetrayn-5, 8, 11, 14-oic acid, and wherein n represents an integer varying from 2 to 16; a process for their preparation, their dietetic and therapeutic applications and compositions containing them.

Abstract: A process for improving the cheese capacity of milk used in the preparation of soft paste cheeses intended to be ripened comprising adding during the course of the preparation of the soft paste cheese an enzyme extracted from a culture of Micrococcus caseolyticus to the milk; and the cheese prepared thereby.