Enichem S.p.a

Consiglio Nazionale Delle Ricerche

Eniricerche S.p.a.

Polimeri Europa S.p.a.

Nicoletta Cardi

Riccardo Po'

Roberto Santi

Fabio Garbassi

Giuliana Schimperna

Maria Caldararo

Aldo Longo

Riccardo Po

Giuseppe Cometti

Riccardo Po&prime;

Francesco Masi

Anna Sommazzi

Ernesto Occhiello

Francesco Menconi

Giorgio Giannotta

Giuseppe Conti

Francesco Ciardelli

Antonio Gennaro

Luisa Fiocca

Federico Orsini

Angelina Altomare

Andrea Callaioli

Chrissostomos Chatgilialoglu

Maria Anna Cardaci

Gabriella Tozzola

Process for the preparation of block copolymers, based on vinylaromatic monomers and monomers deriving from (meth)acrylic acid by means of radicalic polymerization which comprises polymerizing the monomers at a temperature higher than or equal to 120&#xb0; C., in the presence of a radicalic initiating system comprising a compound having general Formula (I) 

Process for the preparation of block copolymers

Process for the polymerization of unsaturated vinyl and/or vinylidene monomers which comprises reacting one or more monomers in the presence of heterocyclic initiators having a nitrogen atom bound to an oxygen atom at a temperature ranging from 100 to 130&deg; C.

Organic initiators and their use in the polymerization of unsaturated monomers

Catalyst and its use for the synthesis of polyol polyethers

Catalyst and process for the syndiotactic polymerization of vinylaromatic compounds

Polymeric compositions

Process for the preparation of crystalline vinylaromatic polymers with a high degree of syndiotacticity which comprises polymerizing vinylaromatic monomers in the presence of a catalytic system essentially consisting of:

Process for the production of vinylaromatic polymers with a high degree

Syndiotactic terpolymers of styrene comprising repetitive units deriving from:

Syndiotactic terpolymers of styrene

Process for the preparation of crystalline vinylaromatic polymers with a predominantly syndiotactic structure which comprises polymerizing vinylaromatic monomers, alone or mixed with at least one other monomer, in the presence of a catalytic system essentially consisting of:

Process for the preparation of crystalline vinylaromatic polymers with a

Process for the preparation of crystalline vinylaromatic polymers with a predominant syndiotactic structure which involves polymerizing vinylaromatic monomers in the presence of a catalytic system comprising: a titanium complex having general formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, the same or different, represent a hydrogen atom or a C.sub.1 -C.sub.20 alkyl radical or a C.sub.6 -C.sub.20 arylalkyl or aryl radical, on the condition that at least one of these is different from hydrogen.

Process for the preparation of crystalline vinylaromatic polymers with a predominantly syndiotactic structure which comprises polymerizing the vinylaromatic monomers in the presence of a catalytic system consisting essentially of:

Polymers having a very good combination of chemical, mechanical and process properties, and particularly useable either alone or as mixtures, as high-tenacity thermoplastic polymer and as elastomers or elastomeric modifiers, contain, randomly distributed along their chain, repeating cycloketonic structural units having the following general formula (I): ##STR1## wherein: A represents a tetravalent aliphatic or cycloaliphatic, substituted or non-substituted moiety containing a total number of from 4 to 50, preferably from 4 to 20, carbon atoms. Such polymers can be prepared by means of a process which comprises reacting, in a liquid media, a polydiene containing adjacent structural units derived from the 1,4-cis polymerization of conjugated dienes, with carbon monoxide, in the presence of free radical generating compounds and, optionally, a compound capable of acting as a hydrogen donor.

Polymers containing repeating cycloketonic units, and method for

Polyethyleneterephthalate (PET) originating from the sorted collection of solid urban refuse can be regraded and recycled as such or mixed with virgin PET if treated at high temperature with an oxazoline of general formula: ##STR1##

Process for preparing high molecular weight polyethylene-terephthalate

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Arona-Novara, Italy

Nicoletta Cardi