Eniricerche S.p.a.

Agip Petroli

Snam S.p.a.

Anic S.p.a.

Enoxy Chimica S.p.a.

Alberto Gandini

Arnaldo Roggero

Raffaello Sisto

Claudio Valentini

Alessandro Stopponi

Amalia Assogna

Ugo Pedretti

Maria Andrei

Luigi Rivola

Massimo Soprani

Otello Farias

Mario Bruzzone

Raffaella Monga

Viviana De Malde

A solid polymeric electrolytic membrane comprising a solution of an ion compound in a cross-linked polyether including a liquid plasticizer obtained by: a) copolymerizing a vinyl ether of the formula:

Solid polymeric electrolyte including a cross-linked polyether

Compounds of general formula ##STR1## wherein: R is a linear or branched C.sub.1 -C.sub.20 alkyl radical, m is either 0 or 1; n has a value of from 1 to 10, are corrosion inhibitors, suitable for inhibiting the general corrosion and the stress brittlening caused by hydrogen sulfide (SSC), in an acidic environment, in the presence, or absence of carbon dioxide, of medium-and high-strength manganese steels and low-alloy steels, commonly used in petrochemical facilities and in bore drilling, transport and processing systems for natural gas or petroleum.

Inhibition of steel corrosion

An amorphous modified poly(2,6-dimethyl-p-oxyphenylene) (PPO) is described with a glass transition temperature (Tg) within the range of 170.degree.-220.degree. C., of which the macromolecules contain units having trialkylsilyl groups bonded to the nucleus and/or to the methyl: ##STR1## together with units having hydroxyethyl groups bonded to the nucleus and/or to the methyl: ##STR2## This modified PPO is prepared by metalating PPO with a metalating agent and reacting the formed metalated PPO with a trialkylsilyl halide and with ehtylene oxide in succession. The use of the thus modified PPO for the preparation of flat, including asymmetric, membranes useful in gas mixture separation processes is described.

Modified poly(2,6-dimethyl-p-oxyphenylene), a process for its

A process for preparing a modified, amorphous poly-(2,6-dimethyl-p-oxyphenylene) (PPO) comprises:

Process for preparing modified poly-(2,6-dimethyl-p-oxyphenylene)

A modified poly(2,6-dimethyl-p-oxyphenylene) with a glass transition temperature in the range of 180.degree.-220.degree. C. is described in which on the average between 10 and 60% of the macromolecules carry:

Alkylene oxide modified poly(2,6-dimethyl-p-oxyphenylene)

Coupling agents of general formula ##STR1## and their use in a method for the termination of living polymers obtained by the anionic polymerization of dienic and/or vinylaromatic monomers.

Method for the termination of living polymers obtained by anionic

Method for the termination of living polymers and compounds suitable to

Method for the termination of polymers obtained by the anionic

Multifunctional anionic initiators having the general formula: ##STR1## and process for synthesizing said initiators and their use in polymerizing dienic monomers and for making block polymers.

Multifunctional anionic initiators and their use

Graft-polymers of,.alpha.,.alpha.'-disubstituted .beta.-propiolactones on isobutylene-triene copolymers are prepared by reacting an isobutylene-triene copolymer with maleic anhydride and possibly with other functionalizing agents adapted to introduce acid and ester groups in the copolymer molecule and by neutralizing or hydrolyzing, or both, with a tetraalkylammonium base, said functional groups, said neutralization or hydrolysis, or both, being followed by a grafting reaction with pivalolactone.

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Milan, Italy

Alberto Gandini