Abstract: An industrial shaped adsorbent for the non-cryogenic separation of gases from air, comprising from 70 to 95% by weight zeolites, and, correspondingly, from 30 to 5% by weight of a clay binder,(a) said zeolites consisting essentially of mixtures of X and A zeolites having an X crystallinity greater than or equal to 95% and an A crystallinity less than or equal to 5%, a toleune standard adsorption of 23.+-.1% and an X-ray spectrum characteristic of a practically pure faujasite, and with the Si/Al ratio of the crystalline component being 1.+-.0.03, and(b) with the adsorbent having a 2Ca/Al ratio between about 80 and 99%, a nitrogen adsorption between 16 and 23.5 L/kg and a ratio of the nitrogen to the oxygen adsorption capacities under 1 bar between 3.5 and 4.5 and the process of making such adsorbents.

Abstract: A process for obtaining zeolite agglomerates for molecular sieves by forming a paste from a zeolite powder, a siliceous earth, and a sodium aluminate solution, shaping the paste into agglomerates, aging the agglomerates under ambient conditions, heat-treating, and then calcining the agglomerates and the resultant agglomerates.

Abstract: A thermofusible autoadhesive shape having nonadherent exterior surfaces consisting essentially of a thermofusible autoadhesive interior and an adherent exterior sheath of a compatible nonautoadhesive thermofusible material covering the entire outer surface of said thermofusible autoadhesive interior and the process of making such shape.

Abstract: Improved anaerobic adhesive compositions are described which contain an alkylsulfonylphenylhydrazine as the accelerator. The compositions are remarkably stable in storage but nevertheless set quickly upon anaerobic contact on the most diverse materials. They are particularly advantageous for the retention and making tight of threadings and smooth fitting made of treated steel, e.g., zinc-coated or bichromated steel.

Abstract: New cation-active amine compositions, liquid at ambient temperature, which do not form concretions by prolonged maintenance at temperatures in the region of 0.degree. C., nor by exposure to the open air, and which do not contain solvents, comprising from 20 to 80% branched-chain alkyletheramines and 80 to 20% oxyalkylated alkylpolyamines. Application of their acid liquid solutions as emulsifying phases of road bitumen, and improved manufacturing process for road bitumen emulsions.

Abstract: The process of making N,N-dimethyl-N-alkylamines containing less than 1% of alkanols by hydrogenation of N,N-dimethylalkylamines on a catalyst of the copper chromite type containing an amount of manganese oxide effective to keep the alkanol level below 1%.

Abstract: A process for reducing the corrosiveness of aerated aqueous solutions, which comprises stripping the oxygen with gas containing hydrogen sulfide after addition of a composition which is both catalytic of the reduction of oxygen by hydrogen sulfide gas and inhibiting of hydrogen sulfide corrosion, such composition comprising certain metallic salts and a water-soluble oxyethylenated amine.

Abstract: A process for the production of a primary alkylamine or a dimethylalkylamine in a single stage comprising heating a reaction medium comprising a long chain carboxylic acid ester with ammonia and hydrogen in the presence of a mixed catalyst of the oxide-metal type; said oxide being titanium dioxide and the metal being a combination of copper and cobalt or of copper, chromium, and cobalt; and the mixed oxide-metal catalyst.

Abstract: Method and equipment for recovering solvent from a gaseous waste by adsorption of the solvent on active charcoal in fiber form followed by desorption with a gaseous regenerating fluid which can be hot air or a neutral fluid including nitrogen. The equipment includes one or more adsorption-desorption assemblies containing the active charcoal and a system for recovering the solvent wherein the adsorbed solvent is converted into a vapor, the solvent vapor and any water vapor present is condensed and the condensates are separated. The gaseous regenerating fluid is circulated in a closed circuit through the assembly and the system.

Abstract: Two-component polyurethanes without inclusion of gas are described, whose hydroxylated component contains a zeolitic dehydrating agent which corresponds to the following formula in its anhydrous form: ##EQU1##

Abstract: This invention relates to polymeric additives useful for inhibition of the deposit of paraffins and improvement of the flow properties of crude oils and to compositions containing crude oils and such additives. The polymeric additive according to the invention consists of a polymer formed by units derived from one or more alkyl esters of unsaturated monocarboxylic acids, one or more unsaturated alpha, beta-dicarboxylic compounds in the form of diacids, low alkyl diesters or anhydrides and one or more monomers having ethylenic unsaturation of the general formula CH.sub.2 .dbd.CZ.sub.1 Z.sub.2, in which Z.sub.1 and Z.sub.2 are the same or different and represent hydrogen, a halogen, a saturated, unsaturated or aromatic hydrocarbon group or an ester or ether group. Compounds containing a crude oil and 5 to 4000 ppm and preferably 100 to 1500 ppm of the additive have much improved flow properties.

Abstract: The invention describes a novel material intended for use in public works, constituted by a mixture of granular, alluvial or clay soils, of hydrophilic polymers and cationic hydrophobating additives, wherein this material presents a high insensitivity to variations of ambient humidity and is intended in particular for use with building roads.

Abstract: The invention concerns the recovery of heavy metals from concentrated solutions.The process comprises complexing the metals with an organophosphorous complexing agent and recovering the metallic complex by sedimentation, filtration, flotation and the like.The process can be used to recover uranium and rare earths from phosphoric acid solutions.

Abstract: The present invention relates to novel mixtures based on fatty diamines used for the preparation of surface active agents intended for the preparation of emulsions of hydrocarbon binders, wherein the fatty diamines of said mixtures have the formula: ##STR1## in which R is a saturated or non-saturated alkyl radical having from 8 to 22 carbon atoms, and 2.ltoreq.n.ltoreq.6.

Abstract: The present invention relates to a process for treating a cassiterite ore, characterized in that, just before the flotation operation, said ore is subjected to a preliminary flotation operation, using an amphoteric collector of formula: ##STR1## in which: R is R.sub.1 or R.sub.1 --O-- or ##STR2## R' is H, CH.sub.3, polyoxyalkyl or R(CH.sub.2).sub.3 or A.sub.q --Z, R" is H or A.sub.q --ZAp and A.sub.q are polymethylene chains,Z is selected from the carboxylic, sulfonic or phosphonic groups.

Abstract: The present invention relates to an enrichment process, by flotation, of sedimentary ores containing phosphate, and comprising a gangue of the carbonated type and in some cases a gangue of the siliceous type, wherein an amphoteric product of formula ##STR1## is at least used as collecting agent, in which formula: R is of form R.sub.1 or R.sub.1 O--, R.sub.1 being a saturated or unsaturated alkyl radical, either linear or branched, and comprising between 5 and 19 carbon atoms.R' and R" are H or --Aq--Z, bearing in mind that for R", when n is greater than 1, there can be in the molecule simultaneously radicals H and radicals --Aq--Z.Ap and Aq are polymethylene chains containing between 1 and 4 carbon atoms,n is a number equal to O or an integer between 1 and 5,Z is a radical selected from the carboxylic, the sulphonic and the phosphonic radicals, and in obtaining the flotation of the carbonated gangue by a reverse flotation in "basic medium .

Abstract: Application, for the enhanced oil recovery by means of an aqueous solution, of an agent capable of increasing the viscosity of the solution. Said agent consists of a mixture of a xanthan salt of a trivalent metal, iron or aluminum, with a complexant for the ion of the trivalent metal.

Abstract: A hydrocarbon feedstock derived from crude oil or other sources is subjected continuously to thermal cracking under pressure and in the presence of hydrogen in order to convert the feedstock to products of lower molecular weight containing high proportions of olefinic components. In a first processing step, a catalytic hydrogenating pretreatment is performed at a temperature within the range of 300.degree. C. to 600.degree. C. and under a pressure within the range of 12 to 85 bars. In a second step, a thermal cracking treatment is performed under a pressure within the range of 10 to 70 bars with residence times of less than 0.5 second and at a temperature within the range of 625.degree. C. to 1,000.degree. C., the quantity of hydrogen employed being such that the molar concentration in the effluents is at least equal to 20%.

Abstract: A gelling composition used as a food gelling agent, in water or milk, and comprising a gelling mixture consisting of a first gelling agent which is a galactomannan and a second gelling agent which is an agar and/or a xanthane, wherein the galactomannan has undergone a depolymerization treatment so that its solution in water at 1% has a viscosity in the range of 10 and 1000 centipoises at 25.degree. C.

Abstract: In a method of extinguishing metal fires, use is made of exfoliated graphite for isolating the relative burning metallic surface from the ambient atmosphere. Said exfoliated graphite may be obtained in situ starting from graphite complexes able to be exfoliated at the fire temperature range.