Polyisocyanates containing allophanate and silane groups

摘要

Polyisocyanates containing allophanate production involves converting hydroxyl urethanes or hydroxyamides containing silane group in presence of catalyst, which is obtained by the reaction between excess quantity of amino silanes with cyclic carbonates or lactone and least quantity of diisocyanate combined with aliphatic, cycloaliphatic, araliphatic or aromatic.