Montedison S.p.a.

Himont Italia S.r.l.

Himont Incorporated

Novamont S.p.a.

Istituto Guido Donegani S.p.a.

Montedison Fibre S.p.a.

Presidenza Del Consiglio Dei Ministri

Marco Foa

Andrea Gardano

Giampiero Sabarino

Francesco Casagrande

L Lawrence Chapoy

Alfredo Coassolo

Luigi Cassar

Alessandro Moro

Larry L Chapoy

Norberto Gatti

Sauro Strologo

Elena Bencini

Franco Francalanci

Guido Petrini

Giampiero Borsotti

Franco Francalcanci

Luigi Sacconi

Riccardo Barisone

Lawrence Chapoy

Fabrizio Forlini

Carlo Federici

New phosphorous organic amides of a specific formula and their use as stabilizers for polymers and, other organic materials.

Phosphorous organic amides suitable as stabilizers and polymer

A method of preparing carboxylic acids or esters thereof by the oxidative cleavage of unsaturated fatty acids or esters thereof is carried out in a two-phase aqueous-organic system in which the organic phase contains the unsaturated fatty acid and/or the esters thereof and the aqueous phase contains hydrogen peroxide. The oxidative cleavage is carried out in the presence of a catalytic system including a catalyst belonging to the group constituted by tungstic and molybdic acids and alkaline salts thereof, and an onium salt which acts as a phase-transfer agent for the catalyst, and has the formula:

Preparing carboxylic acids or esters by oxidative cleavage of

New organic phosphites of a specific formula are used as stabilizers for polymers and other organic materials.

Polymer compositions containing organic phosphite stabilizers

Cross-linkable thermotropic liquid crystalline aromatic polyesters comprising at least one unit derived from an aromatic diol substituted with at least one allyl group, in combination with units derived from dioxyaryl and dicarboxyaryl monomers.

Cross-linkable thermotropic liquid crystalline aromatic polyester

A process for the synthesis of phenyl substituted aromatic diols, obtained by dehydrogenation of the corresponding substituted cyclohexyl derivatives in the presence of a palladium supported catalyst, said palladium supported catalyst being prepared by a process which comprises treating a palladium hydrolysis compound with reducing agents.

Process for the synthesis of aromatic phenyl substituted diols

Preparation of 2-aryl-hydroquinones of formula (I) by oxidizing by an electrochemical route a compound of formula (II): ##STR1## wherein A represents an aryl group optionally substituted with groups compatible with the reaction conditions in an acidic aqueous reaction medium, at temperatures within the range of from 10.degree. to 100.degree. C., and with anodes of graphite or PbO.sub.2. The products are used in photography and in the field of liquid-crystal polymers.

Electrochemical synthesis of 2-aryl-hydroquinones

There is disclosed a process for the preparation of 2-methyl-5-pyrazinoic acid consisting of electrochemically oxidizing a compound having formula: ##STR1## wherein X is --OH, Cl, Br, --O--CO--R, --O--SO.sub.2 --R, in which R is a C.sub.1 -C.sub.5 alkyl radical, optionally substituted with F or Cl, or it is a C.sub.6 -C.sub.12 aryl radical, in an aqueous alkaline medium, at a temperature ranging from 20.degree. C. to 90.degree. C., using anodes coated with nickel oxide-hydroxide.

Electrochemical synthesis of 2-methyl-5-pyrazinoic acid

Thermotropic liquid-crystalline aromatic polyesters processable in the molten state, comprising units derived from at least one dicarboxylic aromatic acid and from mono- and di-substituted (1-phenyl-ethyl)-hydroquinones in admixture with hydroquinone, and/or hydroquinones substituted with halogen or alky, aryl or cycloalkyl groups.

Termotropic liquid-crystalline aromatic polyester from

Thermotropic liquid crystalline aromatic polyesters of 3,3'-diphenyl-4,4'-dihydroxydyphenyl containing units derived from mono-substituted hydroquinones in amounts over 10% by moles with respect to the total of the aromatic diols.

Thermotropic liquid crystalline aromatic polyester from 3,3'-diphenyl-4,4'-

Liquid-crystalline, thermotropic, aromatic polyesters processable in the molten state, comprising units derived from hydroquinones substituted with aryl, aralkyl and aroyl groups, and from phenoxy-hydroquinone.

Liquid-crystalline, thermotropic aromatic polyester from hydroquinone

Thermotropic liquid crystalline aromatic polyesters of 4,4'-dihydroxydiphenyl substituted in 3,3' positions by a halogen or by an alkyl, cycloalkyl or aralkyl radical.

Thermotropic liquid crystalline aromatic polyesters of disubstituted

Process for the hydrogenation of bis-phenols by reacting bis-phenols with hydrogen in the presence of a catalytic system consisting of palladium supported on activated carbon.

Process for the hydrogenation of bis-phenols

Polyphenylenethers are prepared by oxidative polymerization of phenols in the presence of oxygen and of organic bases (amines), by using copper-based catalysts having general formula:

Process for preparing polyphenylenethers

This invention relates to the preparation of esters or salts of aromatic or etheroaromatic acids having formula Y--Ar--CO--OR (I), where:

Process for the preparation of esters or salts of aromatic or

Alpha-arylpropionic acids and alkaline salts thereof are prepared by catalytic reaction with carbon monoxide of the corresponding secondary halids in an anhydrous low alcohol solvent in the presence of a salt of cobalt hydrocarbonyl and in further presence of alkaline hydroxides under substantially ambient temperature and pressure conditions. The products obtained find useful applications in the field of pharmaceutics (analgesics, antipyretics, etc.) and as intermediates for chemical syntheses of fine chemicals, phytodrugs, etc.

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Novara, Italy

Marco Foa