Chimie Des Cyanates D'onium Copolymérisation Avec Le Toluène Diisocyanate Et Formation De Polyisocyanates??Polyisocyanurates D'onium: Chemistry of Onium …

…, I De Aguirre, R Touillaux

Index: Lambert, P.; Aguirre, I. de; Touillaux, R. Bulletin des Societes Chimiques Belges, 1984 , vol. 93, # 5 p. 393 - 404

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Abstract

Abstract Owing to the lipophilic character of the tetraalkylonium cations many onium cyanates are soluble in aprotic organic solvents in which they show a high reactivity. In this paper we examine the reactions of onium cyanates (QNCO) with aromatic mono-and diisocyanates. Aromatic isocyanates react very rapidly with QNCO (co-trimerization) at room temperature and yield quantitatively onium diarylisocyanurates (IV)(S: Ac, DME). In some ...