Versalis S.p.a.

Enichem Anic S.p.a.

Polimeri Europa S.p.a.

Enichim Anic S.p.a.

Paolo Calaresu

Loreno Lorenzoni

Giuseppe Messina

Alessandro Casalini

Alessandro Del Seppia

Giovanni Antonio Fois

Giovanni M Sechi

Elena Bencini

Pier Gianni Cabras

Process for the alkylation of aromatic hydrocarbons by means of aliphatic alcohols containing from 1 to 8 carbon atoms, which comprises feeding the hydrocarbon and alcohol to the head of a fixed-bed reactor, operating with 'trickle flow' regime, containing at least one layer of a catalyst comprising a zeolite selected from medium-pore zeolites and large-pore zeolites.

Process for the alkylation of aromatic hydrocarbons with C1-C8 alcohols

Process for the alkylation of aromatic hydrocarbons by means of olefins containing from 2 to 8 carbon atoms, which comprises feeding the hydrocarbon, olefin, and possibly water, to the head of a fixed-bed reactor, operating with a 'trickle flow' regime, containing at least one layer of a catalyst comprising a medium-or large-pore zeolite.

Process for the alkylation of aromatic hydrocarbons with olefins

The invention relates to a process for the alkylation of benzene with isopropanol (IPA) as alkylating agent, or blends of isopropanol and propylene, which comprises effecting said reaction completely in gaseous phase and in the presence of a catalytic system containing a zeolite belonging to the MTW family.

Process for the alkylation of benzene with isopropanol or blends of isopropanol and propylene

A new process for preparing oxalyl- and oxamyl-hydrazides which comprises contacting oxamide or diacetyloxamide with the corresponding hydrazine derivative of formula

Process for the preparation of oxalyl- and oxamyl-hydrazides

A new process for preparing N,N'-bis-(2-hydroxyethyl)-piperazine (I) ##STR1## is described which involves reaction of oxamide with excess diethanolamine at a temperature of from 50.degree. to 268.degree. C.

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Sassari, Italy

Paolo Calaresu