Montedison S.p.a.

Giorgio Pin

Franco Federici

Ennio Cozzi

Aldo Trovati

High-functionality compositions based on fluorinated and silanized polyisocyanates, prepared by reacting a hydroxy-terminated perfluoropolyether having an average molecular weight ranging from 500 to 7000 and a silico-carbinol having an average molecular weight ranging from 500 to 7000, with an organic diisocyanate and a polyol having a functionality of at least 3. Varnishes containing said compositions based on fluorinated and silanized polyisocyanates, having a high functionality.

High-functionality compositions based on fluorinated and silanized

Highly functional fluorinated polyisocyanates of the formula: ##STR1## wherein Z.sub.1 represents the functional group --O--CO--NH--R--NCO;

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Olgiate Olona, Italy

Giorgio Pin