Eniricerche S.p.a.

Snamprogetti

Anic S.p.a.

Enichem Synthesis S.p.a

Agip Petroli

Enichem Sintesi S.p.a.

Snam S.p.a.

Enichem Elastomeri S.p.a.

Agip S.p.a.

Eniricherche S.p.a.

Enoxy Chimica S.p.a.

Enichem Polimeri

Eniricerche S.p.a.-and- Snamprogetti S.p.a.

Eniricerche S.p.a. and Agip S.p.a.

501 Eniricerche S.p.a.

Arnaldo Roggero

Ugo Pedretti

Alberto Gandini

Maria Andrei

Francesco P La Mantia

Bruno Bresci

Cesarina Bonfanti

Luca Marchese

Pier L Magagnini

Stefano Passerini

Bruno Scrosati

Guglielmo Bertolini

Alessandro Lezzi

Enrico Montani

Raffaello Sisto

Claudio Valentini

Fabrizio Bonaccorsi

Thomas Paul Lockhart

Rosario Pappa

Luigi Rivola

Massimo Soprani

Hassan A Hakemi

Alessandro Stopponi

Mario Bruzzone

Amalia Assogna

Pierluigi Magagnini

Ming-de Liu

Nicoletta Maurizi

Mario G Clerici

Edoardo Platone

Sebastiano Cesca

Aldo Prevedello

Armando Marcotullio

Alessandro Mazzei

Aldo Priola

Carlo Busetto

Giovanni Perego

Sandra Cobianco

Otello Farias

Umberto Cova

Elio Donati

Marco Cesari

Mario Riocci

Luciano Zotteri

Raffaella Monga

Yean Demertzis

Paola Prosperi

Marco Ferrari

Viviana De Malde

Vincenzo Citta'

Antonio Proni

Tito Salvatori

Simona Carrozzino

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

A thermotropic polyesterimide, in which the liquid-crystalline phase is of nematic structure within a useful temperature range, consists of units of formula: ##STR1## the units being in the following ratios:

Thermotropic polyesterimide, a process for its preparation, and its use

The instant invention provides a solid, polymeric electrolyte in membrane form, constituted by a solid solution of an ionic compound in a crosslinked polyether, characterized in that said polymeric electrolyte is obtained by (1) blending a prepolymer, an ionic compound, a plasticizer, and a free-radical-generating activator; and (2) applying the resulting blend on an inert carrier and exposing said blend to a source of ultraviolet light, thermal radiation or electron beam, until the blend is completely crosslinked. The instant invention also provides an electrolyte separator for use in electrochemical devices, optical and electrochemical displays and sensors, which comprises the polymeric electrolyte of the instant invention.

Solid, polyether-bases polymeric electrolyte

Process for preparing a solid, polymeric electrolyte, in membrane from, characterized in that: (1) a mixture is prepared, which contains:

Process for preparing a solid, polymeric electrolyte based on polyvinyl

An electrochromic window comprises a tungsten oxide electrode on a transparent conductive glass sheet and a nickel oxide counterelectrode. The counterelectrode is activated by electrochemical intercalation of lithium on a transparent conductive glass sheet. The window also comprises a solid polymeric electrolyte interposed between the electrode and the counterelectrode. The electrolyte is formed by a solid solution of an ionic lithium compound in a solid crosslinked polyepoxide. The polyepoxide is obtained by copolymerization of a monoepoxide with a diepoxide.

Electrochromic window, based on a polymeric polyepoxy electrolyte

Water insoluble polymers containing hydrophilic pendant moieties ending with a chelating group are disclosed. The polymers are useful in the purification of water polluted by heavy metals such as mercury and lead. The polymers have the general formula P--(--(--O--R).sub.n --(NH--Q).sub.p --F).sub.m where P is a polymeric matrix capable of reacting with a polyalkylene glycol or an alkylene oxide having such a structure and molecular weight as to be insoluble in water; R is either --CH.sub.2 CH.sub.2 -- or mixtures of --CH.sub.2 CH.sub.2 -- and --CH.sub.2 CH(CH.sub.3)--, with the molar ratio of both units in the mixture being at least 3:1; n is 3 to 50; m is a numeral such that the % by weight of all of the --(--(--O--R--).sub.n (NH--Q).sub.p --F hydrophilic chains is higher than 1% by weight of the total weight of (I); Q is a C.sub.2 -C.sub.6 difunctional aliphatic or aromatic hydrocarbon radical; p is 0 or 1; F is a chelating group selected from dithiocarbamate and methyl-thiourea when p is 1, or from thiol and isothiouronium when p is 0.

Polymer containing chelating groups, process for preparing it and its

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

A thermotropic copolyester, which displays a liquid-crystal phase of nematic type, within a desired temperature range, contains units deriving from:

Thermotropic copolyester, process for preparing it and use thereof in

An improved process for preparing carboxylated 2-allyl-phenols of general formula (I): ##STR1## is disclosed, which consists of a first step of simultaneous esterification and etherification of a carboxylated phenol, subsequent rearrangement of the resulting product to yield allyl-carboxylated allyl-phenol and end saponification of the latter into carboxylated 2-allyl-phenol.

Process for preparing carboxylated 2-allyl-phenols

A solid, polymeric electrolyte is prepared by:

Solid, polymeric, polyether based electrolyte

A thermotropic copolyesteramide, with a nematic structure of the liquid crystalline phase within a desired temperature range of the mesophase, contains a unit derived from: (a) a saturated .alpha., .omega.-dicarboxylic acid; (b) 4,4'-dihydroxydiphenyl; (c) p-aminobenzoic acid; (d) 2,6-dihydroxyriaphthoic acid. A copolyesteramide of this type exhibits improved characteristics, especially in regard to its elastic modulus and tensile strength, when used as a self-reinforced material or as a reinforcement material for traditional thermoplastic polymers.

Thermotropic copolyesteramide, process for its preparation and

A thermotropic copolyesteramide, with a nematic structure of the liquid crystalline phase within a desired temperature range of the mesophase, contains metered amounts of units derived from: (a) a saturated aliphatic -dicarboxylic acid; (b) 4,4'-dihydroxydiphenyl; (c) 4-hydroxybenzoic acid and (d) 4-aminobenzoic acid or (d') 4-aminophenol. This thermotropic copolyesteramide, produced by the copolymerization of monomers in the molten state, is a material with self-reinforcing characteristics capable of yielding, by normal injection or extrusion processes, remarkable molecular orientations which impart a high rigidity to the manufactured products. The copolyesteramide may be used as a reinforcement material for traditional thermoplastic polymers, by usual techniques.

Semi-aromatic copolyamides and copolyester-amides are obtained by placing an aliphatic polyamide into contact with an aromatic hydroxyacid or aminoacid, by operating at high temperature, under melting conditions, possibly in the presence of a catalyst, with a ratio of the monomer units of aliphatic polyamide to the mols of aromatic hydroxyacid or aminoacid comprised within the range of from 20:1 to 1:1. The semiaromatic copolyamides and copolyester-amides so obtained can display a thermotropic liquid-crystal behavior as a function of their content of aromatic units linked inside the molecular chain. Their elastic modulus results to be improved relatively to the alifatic polyamides used as the starting product, and the elongation at break results to be decreased. Such semiaromatic polyamides and copolyester-amides can find application in the production of high-stiffness articles, by means of moulding or extrusion processes. They can also be used as blends with the usual thermoplastic polymers, in which they act as reinforcer or compatibilizer agents.

Catalytic preparation of semi-aromatic copolyamides and

A solid polymer electrolyte in membrane form, consisting of a solid solution of an ionic compound dissolved in a polyether, is obtained by copolymerizing a vinyl ether with an allyl vinyl ether to obtain a copolymer with allyl unsaturations; hydrosilylating the allyl double bond of this copolymer by reaction with an alkoxysilane to obtain a hydrosilylated copolymer; and cross-linking the hydrosilylated copolymer by means of a diprotic cross-linking agent, operating in solution in an organic solvent in the presence of an ionic compound, and evaporating the solvent to obtain a membrane.

Solid polymer electrolyte based on cross-linked polyvinylether

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

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