Organopolysiloxane and curable composition containing same

Abstract

This organopolysiloxane which has a constituent unit represented by general formula (1) and a group represented by general formula (2), said group being directly bonded to a silicon atom, enables a curable composition containing a polyisocyanate compound to achieve a good balance between fast curing properties and storage stability, and enables the achievement of a cured product that has excellent hardness, heat resistance and wet heat resistance. (In formula (1), each of R1A and R1B independently represents a hydrogen atom, an alkyl group having from 1 to 10 carbon atoms, or an aryl group having from 6 to 10 carbon atoms; and A1 represents an unsubstituted or substituted divalent hydrocarbon group having from 1 to 20 carbon atoms and optionally having a hetero atom.) R2O—  (2) (In formula (2), R2 represents a hydrogen atom, an unsubstituted or substituted alkyl group having from 1 to 10 carbon atoms, or an unsubstituted or substituted aryl group having from 6 to 10 carbon atoms.)

Dependencies are inferred from the claim text.