Abstract: New dinitriles are prepared by reacting an alpha, beta saturated nitrile with an alpha, beta unsaturated nitrile. For this preparation subzero temperatures are preferred. Higher diamines can be prepared by hydrogenating the dinitriles thus obtained, such diamines being reacted with a dicarboxylic acid or a salt, ester or chloride of such an acid to prepare polyamides having an amorphous character, i.e. transparent polyamides.

Abstract: A method for coating various surfaces is disclosed, which comprises the step of preparing a mixture composed by at least one compound such as an epoxy-acrylic resin, a polyester alpha-omega-acrylate resin, an unsaturated polyester resin, or a urethane-acrylate resin and by at least one unsaturated compound of the amide, lactam, piperidone and urea classes and using said mixture for compounding a varnish to be applied to the selected substrate and then irradiated with an appropriate radiation (range 200 to 400 nm wavelength).

Abstract: A process is disclosed for producing thermoelastomeric 3-block copolymers of the ABA (or ABC) type, the end blocks being a plastomeric nature and the intermediate block of an elastomeric nature, by cationic polymerization employing a composite catalytic system comprised of Aluminium alkyl, possibly with a halogen substituent, and of a halogen or a halogen-substituted hydrocarbon radical.

Abstract: Polyolefin polymers can successfully be stabilized against the detrimental effects of UV-radiations by compounding them with a stabilizer belonging to the class of compounds containing a pyrrolidine ring and which are sterically hindered in the 3-position and also substituted in such position by substituents having a high molecular weight. The esters of the 2,2,5,5-tetraalkyl-4-methyl-3-methylol pyrrolidine are exemplary compounds; the adipic and the stearic esters are preferred.

Abstract: Alkoxides of transition metals, selected from among tetravalent Ti, tetravalent and pentavalent V, tetravalent Cr and tetravalent Zr, actinides and lanthanides, are reduced to corresponding alkoxides of lower valency by reacting such higher valency metal alkoxides, in liquid phase, with vapors of metals of the alkaline earth group, the III group and the IV group metals and magnesium. Very efficient polymerization catalysts for the polymerization of unsaturated compounds are thus obtained.

Abstract: There are disclosed oligomeric aluminum hydride iminic derivatives, to be employed as catalysts in polymerization processes and which are prepared by causing alkali-metal or alkaline-earth-metal alanates to react with a primary amine which contains a group of the type --X--R".sub.m, wherein X is a nitrogen atom or an oxygen atom and m is equal to the valence of X minus one. The compounds have a trimeric or a tetrameric "open cage" spatial configuration.

Abstract: For stabilizing polyolefin polymers such as polyethylene and polypropylene against the detrimental effects of exposure to UV-radiations and weathering agents, a stabilizing additive is disclosed which consist of a fatty acid ester of the N-(beta-hydroxyethyl)-2,2,3,4,5,5-hexamethylpyrrolidine. The lauric and palmitic acid esters are preferred.

Abstract: Aromatic alkylamines are prepared by reacting an amine with an alkyl ester of carbonic acid in the presence of an organic iodide, at a temperature below 150.degree. C.

Abstract: This invention relates to particular polyolefin compositions which contain, as stabilizers against UV-light radiations, open-chain amine compounds which are hindered in the alpha-position by alkyl radicals, said amine compounds corresponding to the following general formula: ##STR1## wherein R', R", R"', R.sup.IV, R.sup.V and R.sup.VI which can be equal or different, are radicals of aliphatic hydrocarbons with a number of C-atoms variable from 1 to 20, or can be hydrogen atoms, n is an integer variable from 2 to 12, and n' is an integer comprised between 1 and 15.

Abstract: A process for preparing dimethylcarbonate by reacting methanol with mixtures of carbon monoxide and oxygen which also contain hydrogen. The catalyst is constituted by a salt of a metal of groups IB, IIB or VIII of the periodic system, dissolved or dispersed in the reaction medium.It has been found that the hydrogen does not interfere in the reaction, so that a hydrogen-enriched gaseous mixture (synthesis gas) is withdrawn from the reactor. It is therefore particularly advantageous in that it produces dimethylcarbonate and at the same time provides hydrogen-enriched synthesis gas.

Abstract: This invention relates to a process for synthesizing compounds of aluminium and alkaline earth metals containing hydride hydrogens and alkoxy radicals, of compositionM[A1H.sub.4-n (OR).sub.n ].sub.2.xBin which 0.5.ltoreq.n.ltoreq.3.5; OR is an alkoxy radical derived from a primary, secondary or tertiary alcohol; R is an aliphatic, cycloaliphatic or aromatic hydrocarbon radical; M is an alkaline earth metal; B is a Lewis base; x can vary between 0 and 4; and R can also contain functional groups OR', SR', NR'.sub.2 ect., consisting of reacting together:(a) a halide of an alkaline earth metal;(b) an alanate of an alkaline earth metal of formula M' A1H.sub.4 (M'.apprxeq.alkaline metal);(c) an alcohol chosen from primary, secondary or tertiary aliphatic, cycloaliphatic or aromatic alcohols containing 1 to 20 carbon atoms.

Abstract: A process for the preparation of alkylene glycols starting from the corresponding alkylene oxide, which is reacted with water in the presence of carbon dioxide, wherein the reaction catalyst is selected amongst the organic bases, preferably a tertiary amine, whereby the conversion rate and the selectivity are improved.

Abstract: Novel salt-like compounds adapted to be used as component of catalytic systems in the polymerization of ethylenically unsaturated monomers are disclosed: these compounds are obtained by reacting halides of transition metals or of aluminium with halides of alkaline earth metals, in the presence of phosphorous oxide derivatives which have the function of solvating agents. Also oxyhalides of transition metals lie within the scope of the invention.

Abstract: 2,5-dimethyl-2,5-hexanediol has proven to be an efficient mosquito repellent which has a persistent action and is water soluble.Repellency tests are reported and discussed.

Abstract: Substantially anhydrous magnesium chloride is prepared through the chlorination of a hydrated magnesium chloride by melting the hydrated chloride, feeding that molten material to a bed of carbonaceous material so that it flows downwardly therethrough and simultaneously feeding a mixture of chlorine and air to the bed of carbonaceous material so that it flows upwardly therethrough countercurrent to the molten material, until magnesium chloride of the desired state of purity is obtained, and the purified magnesium chloride is then recovered.

Abstract: Mixed alkoxy-hydride derivatives of aluminum and alkaline-earth metals are disclosed having the formulaM[AlH.sub.4-n (OR).sub.n ].sub.2which may be complexed with a Lewis base wherein M is an alkaline-earth metal, R is selected from an aliphatic, cycloaliphatic or aromatic group having from 1 to 20 carbon atoms and n is a number between 0.5 and 3.5. There is also disclosed a novel process for preparing said derivatives which are useful as reducing agents.

Abstract: For the polymerization of ethylene, as such or with one or more alpha-olefines, a novel catalyst composition is suggested, which has a high yield of polymer per weight unit of catalyst. Such compositions are prepared from a titanium compound in which the valency of Ti is 3 or more, said compound being reacted with the vapors of one or more metals of the group consisting of Al, Cr, Mn, V, Ti, Zr, Mo, Zn and Ca in the presence of a halogen donor which is preferably an organic halide, certain inorganic halides being capable of being used provided that the halide metal has at least two degrees of valency. The composition is used in association with an aluminium hydrocarbyl halide. Yields as high as 30,000 grams of polymer per gram of elemental Ti can be obtained.

Abstract: A method for the production of alkoxyalanates of alkaline earth metals is disclosed, which comprises the step of reacting an alkali metal alanate, an alkaline earth metal halide and an aluminum alcoholate.

Abstract: A process for the cross-linking of high density polyethylene in the solid state according to which the polyethylene is admixed with the agents normally used for the vulcanization of unsaturated rubber compounds, then processed into the desired article and thereafter cross-linked at a temperature lower than the melting point of the polyethylene, the process being carried out in polyethylene containing a certain number of unsaturated bonds along the polymer chain.

Abstract: In the cyclization of gamma-delta or delta-epsilon unsaturated alcohols in order to obtain certain tetrahydrofuran and tetrahydropyran derivatives which are useful in the perfuming of detergents, the improvement consisting in that the alcohol to be cyclized is reacted with a cationic ion-exchange resin. The useful temperature range is from 20.degree. C. to 150.degree. C.: in practice the alcohol and the resin are boiled together or refluxed until the reaction is completed. A number of examples is reported and physicochemical data are given.