Polyisocyanates having alkyl, silyl, siloxane, and carbamate groups and preparing method thereof

摘要

The present invention relates to polyisocyanates having various functional groups and a preparing method thereof. More particularly, the present invention is to prepare polyisocyantes by living anion polymerization under suitable temperature and pressure enough to protect metal ions to prevent from the formation of trimer of the isocyanate through depolymerization and thus provide polyisocyanates having alkyl, silyl, siloxane and carbamate groups with desirable molecular weight, molecular weight distribution and improved physical properties.