Enichem S.p.a

Eniricerche S.p.a.

Great Lakes Chemical Italia S.r.l.

Eni S.p.a.

Anna Maria Romano

Francesco Masi

Roberto Santi

Antonio Alfonso Proto

Anna Sommazzi

Daniele Bianchi

Riccardo Po'

Liliana Gila

Aldo Bosetti

Giuliana Franzosi

Cecilia Querci

Evelina Ballato

Vittorio Carletti

Manuela Grande

Roberto Podesta'

Gianfranco Longhini

Catalysts based on vanadium, their preparation and use in the (CO) polymerization of &agr;-olefins

Process for the preparation of 1-hexane consisting in effecting the oligomerization of ethylene in the presence of a catalyst comprising a vanaduim complex having the formula: (arene) VX wherein the term arene represents benzene or mono-, di-, or tri-alkylsubstituted benzene, V is a vanaduim ion with a low wxidation state, and X is an anion selected from non-coordinated anions such as B(Ar) &mdash;, AlCl &mdash;, carboxylates and sulfonates.

Process for the preparation of 1-hexene

Phosphino oxide group containing compounds useful as flame retardant additives, having the general formula (I): ##STR1## wherein: X and X.sub.1 represent a hydrogen atom or, when taken jointly, they represent an NR.sub.1 moiety in which R.sub.1 stands for a hydrogen atom; a linear or branched aliphatic C.sub.1 -C.sub.5 moiety; a linear or branched C.sub.2 -C.sub.6 acyl moiety; a phenyl moiety;

Reactive flame retardant additives containing phosphino oxide moieties

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Novara, Italy

Anna Maria Romano