Abstract: A carbonate ester of an aliphatic triol or tetraol which can be defined with the following formula: ##STR1## wherein R.sub.1, R.sub.2, R' and p are as defined in the description, is used as a lubricating base with a low quantity of smoke for two-phase engines with internal combustion.Lubricating compositions are described which contain a carbonate ester (1) together with one or more products selected from solvents, bright stock, or other anti-seizing additives, plus normal additives.

Abstract: Polymeric fuels are produced from saturated C.sub.4 hydrocarbons by a process comprising:(A) dehydroisomerizing a gas mixture comprising predominantly of n-butane and hydrogen in a catalytic reactor containing a catalyst (a) of platinum supported on alumina, whose surface is coated with silica, and, optionally, a solid acidic catalyst (b) selected from the group consisting of alumina, whose surface is coated with silica, and Boralite B, with an effluent being obtained which comprises a mixture of predominantly of unreacted n-butane, butenes and isobutene, all of which components of the mixture have a carbon atom content less than 5;(B) separating the mixture of olefins and parafins from hydrogen and aromatic byproducts; and(C) oligomerizing said mixture in the presence of a catalyst consisting of amorphous silica-alumina gel, as determined by X-rays, having a silica:alumina molar ratio within the range of 30:1 to 500:1, with a surface area of from 500 to 1000 m.sup.

Abstract: Process for marking industrial organic solvents miscible with water and petroleum products gaseous at atmospheric pressure and room temperature and liquid when compressed at low pressure, by the addition to the above solvents of a primary nitroderivative having the general formulaR-CH.sub.2 -NO.sub.

Abstract: Solid stabilizers for polymers comprises a blend of (a) organic polymer and (b) at least one silicon-containing compound having a sterically hindered amine group in the molecule in quantities of between 40% and 50% by weight of the final solid blend.

Abstract: The structural gene encoding isoamylase from Pseudomonas SMP 1 is obtained. Also described are vectors comprising the isoamylase gene and host microorganisms transformed by these vectors. The transformed host microorganisms are capable of expressing and/or secreting mature isoamylase having biological activity.

Abstract: Catalytic procedure for the preparation of an organic carbonate having general formula (I): ##STR1## wherein R represents a C.sub.1 -C.sub.10 alkyl radical, linear or branched, or a C.sub.5 -C.sub.8 cycloalkyl radical; or of a cyclic organic carbonate having general formula (II): ##STR2## wherein R' represents a C.sub.2 -C.sub.5 alkylene radical, linear or branched; including the reacting of an aliphatic or cyclo-aliphatic alcohol having general formula (III):R--OH (III)or an aliphatic diol having general formula (IV):HO--R'--OH (IV)wherein R and R' have the meaning described above, with carbon monoxide and oxygen, in the presence of a catalyst composed of a cobalt(II) or cobalt(III) ion and an organic binder containing at least one oxygen atom, characterized in that the process is carried out in the presence of at least one reaction coadjuvant selected from the following groups of linear or cyclic compounds: ureas, nitriles, amides, phosphoramides, sulphones, sulphoxides, carbamates.

Abstract: Polyolefinic fibres and films are made flame-resistant by the addition of a flame-resistant additive made up of a copolyester containing units deriving from: a) terephthalic acid; b) alkylenic glycol (C.sub.2 --C.sub.6) ; and c) phenyl hydroxymethylene phosphinic acid.These fibres and films are prepared by the transformation into its molten state of a mixture of polyolefin and flame-resistant additive.

Abstract: Compounds which can be defined by the formula (I):CF.sub.3 --C.sub.n F.sub.2n --C.sub.m H.sub.2m --CH.sub.3 (I)wherein:n is a numeral comprised within the range of from 1 to 21;m is a numeral comprised within the range of from 3 to 25;n+m is a numeral equal to, or higher than, 18;with the chain of carbon atoms being either linear or branchedare used as agents affording sliding characteristics (ski-waxes) for skis, to be applied onto the ski sole, and/or to be incorporated inside the ski sole.A sliding composition is also disclosed, which contains a paraffinic wax and at least one compound with formula (I).

Abstract: Disclosed herein is an apparatus for testing a digital device. The apparatus includes a generator adapted for connection to the device under test for generating a controlled data stream in words. The generator transmits the controlled data stream to the device which in turn transmits the controlled data stream to a detector. The detector is adapted for connection to the device and receives the controlled data stream. The detector compares the controlled data stream to an expected result and identifies each unexpected result as an error event. The apparatus includes a computer which records the location information of each error event and performs statistical and distribution analysis to allow a user to obtain through high resolution graphical display information used to diagnose the performance of the tested device. The computer controls the input and output of data from the device under test.

Abstract: Organic carbonates and cyclic organic carbonates are prepared by reacting an aliphatic or cycloaliphatic alcohol, or, respectively, an aliphatic diol, with carbon monoxide and oxygen, by operating in the presence of a complex catalyst of cobalt with organic ligands bearing one or more oxygen functional groups, as electron donors.

Abstract: 5-pyrazolecarboxylic acid amide-based insecticide and acaricide compounds of general formula (I): ##STR1## in which: R.sub.1 represents a hydrogen atom, a linear or branched C.sub.1 -C.sub.4 alkyl group or a benzyl group;R.sub.2 represents a hydrogen atom or a linear or branched C.sub.1 -C.sub.4 alkyl group;R.sub.x represents a hydrogen atom, a halogen atom such as chlorine, fluorine or bromine, or a linear or branched C.sub.1 -C.sub.4 alkyl or haloalkyl group; or R.sub.2 and R.sub.x together represent an RHC--(CH.sub.2).sub.n --CH.sub.2 group in which R represents a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group and n is a whole number between 1 and 2;R.sub.3, R.sub.4, R.sub.5 represent, each independently, a hydrogen atom or linear or branched C.sub.1 -C.sub.4 alkyl group;X.sub.1, X.sub.2, X.sub.3 and X.sub.4 represent, each independently, a hydrogen atom or a halogen atom such as chlorine, fluorine or bromine;R.sub.y represents a linear or branched C.sub.3 -C.sub.

Abstract: Water insoluble polymers containing hydrophilic pendant moieties ending with a chelating group are disclosed. The polymers are useful in the purification of water polluted by heavy metals such as mercury and lead. The polymers have the general formula P--(--(--O--R).sub.n --(NH--Q).sub.p --F).sub.m where P is a polymeric matrix capable of reacting with a polyalkylene glycol or an alkylene oxide having such a structure and molecular weight as to be insoluble in water; R is either --CH.sub.2 CH.sub.2 -- or mixtures of --CH.sub.2 CH.sub.2 -- and --CH.sub.2 CH(CH.sub.3)--, with the molar ratio of both units in the mixture being at least 3:1; n is 3 to 50; m is a numeral such that the % by weight of all of the --(--(--O--R--).sub.n (NH--Q).sub.p --F hydrophilic chains is higher than 1% by weight of the total weight of (I); Q is a C.sub.2 -C.sub.

Abstract: A continuous process for deasphalting and demetallating a residue from crude oil distillation, by means of dimethyl carbonate as extraction solvent, comprises:mixing a residue from crude oil distillation with a recycled liquid stream containing oil and dimethyl carbonate, in order to produce a homogeneous solution;cooling said homogeneous solution and separating a refined light, liquid, phase; an extracted middle phase; and a heavy phase containing asphaltenes;recovering a primary, deasphalted/demetallated oil from said light phase;partially recycling said middle phase to the mixing step, and recovering a secondary deasphalted oil from the residual fraction;recovering asphaltenes from said heavy phase.

Abstract: Stabilizers for organic polymers, consisting of one or more compounds of the classis of the sterically hindered amines (HALS) are directly added to the reaction mixture during the (co)polymerization of the .alpha.-olefins or of their mixtures with other unsaturated monomers.The so-obtained polymeric compositions result perfectly stabilized and show a thermo- and photo-oxidative resistance higher than that of the same polymeric compositions to which the same stabilizers are added by a traditional route.

Abstract: A new group of pentaerythryl diphosphonates and poly(pentaerythryl diphosphonates) are described. Flame-retardant compositions are also described, which include a thermoplastic polymer and a certain amount of self-extinguishing agent consisting of one of the above-mentioned pentaerythryl diphosphonates or poly(pentaerythryl diphosphonates).

Abstract: Polymeric stabilizers with a polysiloxanic structure contain sterically hindered phenol groups and reactive groups capable of binding themselves to the polymeric structure to be stabilized. These polymeric stabilizers are particularly suitable for applications which require the non-extractability of additives due to solvents, fats or soaps.

Abstract: Catalytic procedure in gas phase for the preparation of a symmetrical or asymmetrical organic carbonate having the general formula (I): ##STR1## wherein R and R', the same or different, represent a C.sub.1 -C.sub.4 alkyl radical, linear or branched, which includes reacting at least one alcohol having the general formula (II):R--OH or R'--OHwith carbon monoxide and oxygen in the presence of a catalyst composed of oxides, salts or complexes of cobalt.

Abstract: Multistep process for the preparation of alkyl mono and diisocyanates consisting in reacting the corresponding aliphatic amine or diamine with dimethylcarbonate and, substantially, in partially vaporizing and converting the urethane thus formed in an evaporator to subsequently terminate the cracking in a II.degree. reactor, and finally subjecting the cracking product to fractional distillation at reduced pressure, recycling the unconverted part to the partial vaporization step.

Abstract: A liquid composition, polymerizable by free-radical polymerization to yield organic glasses which are endowed with characteristics of low water absorption and high thermal stability, is constituted by the product of transesterification of diallyl-carbonate with a cycloaliphatic diol or a mixture of cycloaliphatic diols, from among said diols 1,4-cyclohexane-di-methanol and 3(4),8(9)-bis-(hydroxymethyl)tricyclo[5.2.1.0.sup.2.6 ]decane being preferred.