Montedison S.p.a.

Montedipe

Ecp Enichem Polimeri S.r.l.

Maricell S.r.l.

Eugenio Bianchin

Piero Andreola

Carlo Mulas

Sauro Gaiba

Francesco Torre

Giovanni Longo

Gian F Lunardon

Massimo Cassol

Process for preparing shaped bodies with integrated polyurethane skin, which process comprises:

Process for preparing shaped bodies with integrated polyurethane skin,

Stable dispersions of polyols having a viscosity lower than 10,000 mPa.times.sec and containing dispersed particles of polyvinylchloride, having a size within the range of from 1 to 10 micrometers and impregnated by the said polyols.

Stable dispersions of polyols containing polyvinylchloride

Modified polyisocyanates with biuret structure containing terminal urethane groups and having general formula: ##STR1## in which R.sub.1 is an aliphatic, cycloaliphatic or aliphatic-cycloaliphatic radical, simple or substituted, and R.sub.2 can have the same meanings as R.sub.1 or can be the radical R.sub.3 (OC.sub.n H.sub.2n).sub.x --. Process for the preparation of modified polyisocyanates having biuret structure containing terminal urethane groups having general formula (I) consisting in reacting an organic diisocyanate with water or with a compound which splits off water, in the presence of a compatibilizing agent having a hydrogen atom reactive towards the isocyanate group, as it can be determined by Zerewitinoff's method.

Modified polyisocyanates with biuret structure and process for their

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Treviso, Italy

Eugenio Bianchin