Catalyst for dissociation of blocking agent for blocked isocyanates, and thermosetting composition containing said catalyst for dissociation of blocking agent

An amidate compound represented by the following Formula (1b-3):

• wherein E1, E2, and E3 each independently represent a substituted or unsubstituted hydrocarbon group, a halogen atom, an alkylamino group, a dialkylamino group, an alkoxy group, an aryloxy group, a nitro group, a cyano group, a sulfonyl group, an (alkylamino)carbonylamino group, a (dialkylamino)carbonylamino group, or an isocyanate group;
• g and h each independently represent an integer of 0 to 4, b and c are 0 or 1, d and f each independently represent an integer of 0 to 4, and e is an integer of 1 to 4, provided that at least one of b and c is 1 when g is 0, and at least one of d and f is 1 when h is 0;
• and
• D is as defined above a nitrogen-containing organic group represented by Formula (2):
• wherein R1, R2, R3, and R4 are the same or different, and each represents a hydrocarbon group that optionally contains a heteroatom;
• some or all of R1, R2, R3, and R4 are optionally bonded together to form a ring structure;
• X represents a nitrogen atom, an oxygen atom, or a sulfur atom;
• and a represents 0 or 1, wherein a is 1 when X represents a nitrogen atom, and a is 0 when X represents an oxygen atom or a sulfur atom.