Anic S.p.a.

Snamprogetti S.p.a.

Enichem Polimeri S.p.a.

Giovanni Dozzi

Salvatore Cucinella

Alessandro Mazzei

Giorgio Della Fortuna

Tito Salvatori

Giovanni Perego

Carlo Busetto

Self-extinguishing polycarbonates consisting of mixtures of polycarbonates with at least one salt of particular carboxylic organic compounds, said salt being of metals of Group I A and/or B, and/or Group II A and/or B of the Periodic Table of elements, and/or of ammonium.

Self-extinguishing polycarbonate composition

Self-extinguishing polycarbonates are disclosed, which consist of mixtures of polycarbonates with at least one salt of metals of the I and/or the II A and B Groups of the Periodic Table, and/or ammonium salts of organic carboxylic compounds having the general formula (I) ##STR1## and, as an adjuvant, at least one compound which is a member selected from the group consisting of the following classes of compounds:

Self-extinguishing polycarbonates essentially consisting of mixtures of polycarbonates with at least one salt of metals of the I and/or of the II A and B Groups of the Elements Periodic Table, of particular inorganic compounds, and possibly with at least one halogenated organic compound.

Composition of self-extinguishing polycarbonate comprising, in mixture, a not halogenated aromatic polycarbonate and a mixture of additives conferring self-extinguishing characteristics to the same polycarbonate, formed by: (a) salt of alkaline metal, of alkaline-earth metal or of zinc, or mixed salt of said metals, of ethylenediaminotetraacetic acid; (b) oligomer of polycarbonate from tetrabromobisphenol-A terminated with phenol, or decabromodiphenyloxide; and (c) polytetrafluoroethylene.

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.

Method for preparation of oligomeric iminic derivatives of aluminum

This invention relates to a process for synthesizing compounds of aluminium and alkaline earth metals containing hydride hydrogens and alkoxy radicals, of composition

Process for synthesizing mixed alkoxy hydride derivatives of aluminium

A poly(-N-alkyliminoalane) having the composition (HAlNR).sub.n, wherein R represents an aliphatic, cycloaliphatic, aromatic or alkyl-aromatic group, and n is a number in the range of 3 to 50, is prepared by directly reacting metallic aluminum with a primary amine having the formula H.sub.2 NR, wherein R has the meaning given above, in the presence of hydrogen at a pressure in the range of from 1 to 1000 kg/cm.sup.2 and at least a stoichiometric quantity of aluminum, at a temperature in the range of from room temperature to the dissociation temperature of the end product, and in the presence of a promoter such as a small quantity of the poly(-N-alkyliminoalane) constituting the end product of said reaction.

Process for the preparation of poly-(-N-alkyliminoalanes)

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.

Method for the synthesis of alkoxyalanates of alkaline-earth metals

A method for the preparation of alkoxyalanates of alkaline earth metals is disclosed, which comprises the step of reacting an alcoholate of an alkaline earth metal and an alkaline earth metal alanate and an aluminum alcoholate, the reaction being of the additive type. The products thus obtained are effective catalysts for reactions of reduction, more particularly of hydrogenation of a number of organic compounds.

Process for synthesizing alkoxyalanates of alkaline earth metals

For hydrogenating unsaturated compounds, and especially those containing aromatic rings, a catalytic system of novel conception is suggested. This is a quaternary heterogeneous system which comprises an elemental metal of Groups IIA or IIIA, a primary or a secondary amine, a Ni or a Co halide, and an activator such as Na, NaH, NaAlH.sub.4 or AlEt.sub.3. Very satisfactory results as to yields and smoothness of reaction are obtained in the conversion of benzene to cyclohexane and of toluene to methylcyclohexane.

Aromatic hydrogenation

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.

Oligomeric iminic derivatives of aluminum hydride and method for their

For hydrogenating unsaturated compounds, and especially those containing aromatic rings, a catalytic system of novel conception is suggested. This is a quaternary heterogeneous system which comprises an elemental metal of Groups IIA or IIIA, a primary or a secondary amine, a Ni or a Co halide, and an activator such as Na, NaH, NaAlH.sub.4 MgEt.sub.2 or AlEt.sub.3. Very satisfactory results as to yields and smoothness of reaction are obtained in the conversion of benzene to cyclohexane and of toluene to methylcyclohexane.

Method for the hydrogenation of aromatic substrates and means therefor

A single stage process is provided for the direct synthesis of mixed polyimino derivatives of aluminum and alkaline earth metals consisting of reacting aluminum, an amine, the alkaline earth metal or hydride or amide derivative thereof, in the presence of hydrogen, the reaction being promoted by an activator in either hydrocarbon or ether solvents.

Process for the synthesis of mixed polyimino derivatives of aluminum and

A single stage process is provided for the direct synthesis of mixed polyimino derivatives of aluminium and alkaline earth metals consisting of reacting aluminium, an amine, the alkaline earth metal or hydride or amide derivative thereof, in the presence of hydrogen, the reaction being promoted by an activator in either hydrocarbon or ether solvents.

Process for the synthesis of mixed polyimino derivatives of aluminium

The present invention provides novel oligomer derivatives of aluminum hydride having the general formula:

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Milan, Italy

Giovanni Dozzi