Abstract: Chlorobenzene is produced by contacting a gaseous flow comprising benzene, oxygen and a halogenating agent, at a temperature of from 190.degree. to 230.degree. C., with a fluidized bed of catalyst particles comprising copper chloride deposited on an eta alumina support having a total volume of pores of from 0.3 to 0.5 ml/g and a surface area of from 250 to 400 m.sup.2 /g.

Abstract: A pneumatic tire casing have at least one sidewall ornamental with patterns being made of an elastomer of a color different from that of the sidewall which covers the carcase of the tire, by compelling during moulding and vulcanization of the tire a thin layer of elastomer of a color different from that of the sidewall into the width of the latter, so as to obtain that said layer becomes arranged at the bottom of a recess formed in a part of the outer surface of the tire casing.

Abstract: Moulding composition comprising from 10 to 50% by weight of a mixture of a first polyester obtained by polycondensation of an alkylene glycol with maleic and/or fumaric acid and a second polyester obtained by polycondensation of an alkylene glycol with an aromatic dicarboxylic acid or a mixture thereof with maleic and/or fumaric acid, the first polyester being present in an amount of from 5 to 50 parts by weight for each 100 parts by weight of the sum of the first and second polyesters, from 0.2 to 2% by weight of an organic peroxide having a decomposition temperature above 70.degree. C., and one or more inert fillers.The composition can be formed into free-flowing granules, free from a tendency to agglomerate, and can be moulded by injection moulding like thermoplastic materials.

Abstract: A pneumatic tire casing have at least one sidewall ornamental with patterns being made of an elastomer of a color different from that of the sidewall which covers the carcase of the tire, by compelling during molding and vulcanization of the tire a thin layer of elastomer of a color different from that of the sidewall into the width of the latter, so as to obtain that said layer becomes arranged at the bottom of a recess formed in a part of the outer surface of the tire casing.

Abstract: A granular thermosetting novolak resin composition free from a tendency to release dust during handling and transformable into molded articles free from surface defects, is obtained by forming the composition into granules of from 2 to 9 mm in size, mixing said granules with 0.7-2.5 wt. % of a liquid mixture of acetone and polymers of alkyl esters of acrylic and methacrylic acids, and drying the thus impregnated granules.

Abstract: Process for the preparation of alkylbenzenes by partial chlorination of linear C.sub.9 -C.sub.15 paraffins, catalytic alkylation of benzene with the resulting mixture and fractionation by distillation of the alkylation products.At least a part of the unreacted paraffins recovered by fractionation and to be recycled to the chlorination stage is submitted, continuously or intermittently, to a purification treatment with molecular sieves.The content in undesired by-products of the alkylbenzenes can thus be maintained at negligibly low values.

Abstract: The concentration of sodium metal in a flow of mercury-sodium amalgam is measured by flowing an aqueous solution of sodium chloride through a conduit of electrically insulating material terminating with a porous septum or a capillary immersed in the flow of mercury-sodium amalgam, at a rate of at least 4 ml per hour and per cm.sup.2 of surface area of contact between the surface of the porous septum or the section of the capillary opening and the amalgam, and monitoring the electromotive force generated between said amalgam and a calomel or silver-silver chloride reference electrode located within said conduit and in contact with said solution.

Abstract: Ziegler catalytic system for the polymerization of olefins, formed by the combination of an organo-metallic compound and a compound of a heavy metal supported on a carrier.The carrier is an active complex obtained by reacting one or more alloys of metals chosen from Mg, Fe, Al, Ni, Cr and Zn, gaseous hydrogen chloride and one or more alcohols in the liquid or gaseous state, at a temperature of from 60.degree. to 300.degree. C., the said active complex having a content of free alcoholic hydroxyl groups of from 1 to 20% by weight, a chlorine content of from 15 to 70% by weight, a metal content of from 5 to 35% by weight, a porosity of from 0.1 to 1 cc/g and a surface area of from 1 to 200 m.sup.2 /g.

Abstract: A system for monitoring and control of an industrial installation, such as a chemical plant, having a large number of operating parameters which have to be maintained between well defined limits which may be fixed or may vary in time in a predetermined manner, comprising a plurality of sensors, one for each parameter being monitored, four digital computers arranged in matrix configuration, two of them having peripheral memories as well as central memories, and means for converting the essentially analogue signals from the sensors into encoded, serialized digital signals for the computers each of which has an associated watch dog detector which senses if it should go faulty and in such event instructs the other three computers or one of the other three computers to take over its functions.

Abstract: A Ziegler catalytic system comprising an organometallic compound of a metal of Groups I to III of the Periodic Table and a compound of a heavy metal of Groups IV to VI supported on a carrier, the latter being an activated amorphous alumina or alumino-silicate containing from 0.3 to 30% by weight of salts of metals of Groups IIb, IIIa, VIb and VIII with oxygenated inorganic anions, or of a mixture of the latter with salts of said metals of Groups IIb, IIIa, VIb and VIII with non-oxygenated inorganic anions, said salts being introduced into the carrier by contacting the latter with one or more solutions of said salts and the carrier being then activated by calcination at 250.degree.-700.degree. C.

Abstract: Novolak phenolic resin compositions are formed into molding granules by homogenizing the composition above the melting point of the resin, calendering the homogenized composition with conversion into a coherent sheet, rolling the sheet between a pair of rollers, at least one of which is indented, to produce a coherent embossed sheet, fracturating the embossed sheet with separation of the granules having substantially the shape and size of the embossments, coating the granules with a phenolic compound and heat-treating the coated granules by flowing a stream of inert gas having a temperature not exceeding 130.degree. C.The resulting granules are free-flowing, free from a tendency to release dust and particularly suitable for injection molding.

Abstract: Catalyst for the oxidation of methanol to formaldehyde usable in the fluidized form in said oxidation, comprising iron and molybdenum oxides on a granular support, said support being a silica or an alumina having a specific surface area not exceeding 1 m.sup.2 /g and an overall pore volume not exceeding 0.2 ml/g and said oxides being present in the catalyst in an amount not exceeding 2 parts by weight for each 100 parts by weight of the support and in an atomic ratio between molybdenum and iron of from 1.5:1 to about 2.5:1.

Abstract: A pneumatic tire cover has a carcase comprises at least one inner radial ply of threads of aromatic polyamide and at least two outer plies of threads having elongation values greater than those of the said aromatic polyamide and arranged in alternately crossing directions from one of said outer ply to another, while the inner radial ply or plies are such as to be able to bear the inflation pressure on its or their own.

Abstract: The end walls of the container are hinged to the opposite vertical edges of one side wall. The roof is hinged to a longitudinal listel rigid with said one side wall, inwardly protruding from the longitudinal upper edge of the latter at 90.degree., and is disengageably coupled with a similar listel on the longitudinal upper edge of the other side wall. Both side walls have their longitudinal lower edges hinged to the base wall of the container, the said one side wall being hinged at a level lower than that of the hinges of the other side wall. The container is collapsable to a reduced volume by first folding the end walls onto the inner face of said one side wall, subsequently downwardly folding the roof onto the folded end walls, then downwardly folding onto the base wall said one side wall with its carried end walls and roof, and downwardly folding the other side wall onto the said one side wall.

Abstract: A process for the preparation of ethanolamines includes passing ammonia in counter-flow with water and a recycled ammoniacal solution through an absorption column provided with internally cooled bubbling-trays to obtain an ammoniacal solution containing from 20 to 50% by weight of ammonia, reacting the ammoniacal solution with ethylene oxide firstly in an isothermal reactor and then in an adiabatic reactor to obtain substantially complete conversion of the ethylene oxide to ethanolamines, removing by means of a desorption column and recycling unreacted ammonia and part of the water from the reaction product, evaporating a greater part of the remaining water in an evaporator and dehydrating the ethanolamines at low pressure.

Abstract: A pneumatic tire cover with a radial carcass in which at least one ply of the carcass is folded upon itself by a prefixed amount, along its longer sides, that is, in those parts of the ply which are anchored to the bead cores about which they are folded or which, not being folded around the bead cores, reach the zone of the cover in proximity to the bead cores themselves.

Abstract: This invention describes the preparation of a red pigment of iron oxide from ferrous salts, by simultaneous reduction of organic nitro derivatives.

Abstract: Ziegler catalytic system comprising an organo-metallic compound of a metal of Groups I to III of the Periodic System and a compound of a heavy metal of Groups IV to VI supported on an alumina carrier, the latter being an activated amorphous alumina containing from 0.3 to 30% by weight of salts of aluminum with oxygenated inorganic anions, or of a mixture of the latter with salts of aluminum with non-oxygenated inorganic anions, said carrier being prepared by precipitating an alumina gel at a pH value of 7-10, introducing the inorganic anions into said gel, drying said gel and calcining the resulting amorphous alumina at 250.degree.-700.degree. C.

Abstract: The purity grade of sodium tripolyphosphate obtained by neutralization with sodium hydroxide of aqueous phosphoric acid obtained by the wet method, removal of the precipitate formed, evaporation to dryness of the resulting solution and calcination of the evaporation residue, is improved by carrying out the neutralization at a temperature not exceeding 85.degree. C., maturing the neutralization product at 70.degree.-85.degree. C. for at least one hour before separating the precipitate, concentrating the sodium phosphate solution, if necessary, to a sodium phosphate content of at least 40 wt.%, and heat treating the solution at 100.degree.-200.degree. C. and at boiling point or under to precipitate the magnesium compounds, prior to the evaporation step.

Abstract: Aromatic amines and iron oxide pigment are produced by reacting a ferrous salt, a reduceable aromatic nitrogen compound chosen from nitroderivatives with a single nitro-group or with two nitro-groups and azoderivatives, and a basic compound, chosen from hydroxides and carbonates of ammonium, alkali metals and alkaline earth metals, operating at 25.degree.-200.degree. C. in an aqueous medium. The color of the pigment can be varied from yellow to black by increasing the reaction temperature and the molar ratio between ferrous salt and aromatic nitrogen compound.