Consiglio Nazionale Delle Ricerche

Enichem S.p.a

Snamprogetti S.p.a.

Daniela Belli Dell'Amico

Fausto Calderazzo

Gabriele Lugli

Anna Sommazzi

Fabio Garbassi

Michela Dell'Innocenti

Paolo Biagini

Alessandra Merigo

Pierluigi Robino

Process for the preparation of N-alkyl substituted metal carbamate solutions characterized in that a water solution of the salt of the metal of which the corresponding carbamate is to be obtained, is reacted with an organic solution, basically consisting of an aprotic solvent and a secondary amine, saturated with carbon dioxide. The above solutions can be used as catalysts in polymerization reactions of unsaturated monomers or for supporting metals on inorganic oxides.

Process for the preparation of N-alkyl substituted metal carbamate

A catalyst active in the preparation of alternating olefin/carbon monoxide (CO) copolymers is constituted by:

Preparation of alternating olefin/carbon monoxide copolymers by means of

Heterogeneous catalyst for preparing alternating olefin/carbon monoxide

Silicon and aluminum N,N-dialkylcarbamates are prepared by reacting a secondary amine and CO.sub.2 with respectively a silicon and an aluminum halide in a reaction medium consisting of an organic solvent and then hydrolyzed by treatment with water in an anhydrous organic solvent.

Silicon and aluminum N,N-dialkylcarbamates and their hydrolysis products

Silicon and aluminium N,N-dialkylcarbamates are prepared by reacting a secondary amine and CO.sub.2 with respectively a silicon and an aluminium halide in a reaction medium consisting of an organic solvent. The respective hydrolysis products are obtained from said N,N-dialkylcarbamates by treatment with water in tetrahydrofuran.

Transition metal complex sulfides containing the NH.sub.2 R.sub.2.sup.+ group are prepared by treating the hydrogen sulfide an organic solution of a carbomate having the general formula:

Complex anionic metal sulfides and process for their preparation

Anhydrous gold trichloride is prepared by stirring a suspension of finely divided tetrachloro-auric acid, having the thionyl chloride at a temperature in the range from 20.degree. to 65.degree. C in the absence of light, whereby said tetrachloro-auric acid and thionyl chloride react to form the desired end product.

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Pisa, Italy

Daniela Belli Dell'Amico