CURING AGENT, METHOD FOR PRODUCING THE SAME AND CURABLE COMPOSITION

摘要

PROBLEM TO BE SOLVED: To obtain both a curing agent having improved moldability and excellent compatibility with a highly polar carbon-carbon double bond-containing compound, capable of developing sufficient physical properties of cured material and a curable composition. SOLUTION: This curing agent is represented by the general formula (I) (A is a siloxane residue containing at least one SH group; B is a 2-18C bifunctional organic group; Y is a covalent bond or a 1-15C bifunctional organic group; Z is a 2-15C bifunctional organic group; and n is a number of f1-5). The curing agent is produced by reacting a carbon-carbon double bond- containing oligoester compound with a polysiloxane containing two or more SiH groups in one molecule so as to make the SiH group remain after the reaction.