In activation energy belt hardening die resin constituent, ultraviolet ray hardening die resin constituent and ultraviolet ray hardening die resin constituent null numerator

摘要

PROBLEM TO BE SOLVED: To obtain the subject composition, having both hardenable properties and excellent mechanical properties by including a reactive oligomer having a specific functional group at a molecular end. SOLUTION: The objective composition includes a reactive oligomer having the formula; (AC)m -(PO)-(R1-O)p -OCHN [AC is a (meth)acryloyl; PO is a tri- or more-hydric polyol component residue; when a (n)-hydric polyol component is used as PO, (m) and (n) satisfy the formula (m)=(n)-1 and (m) is 2 or 3; R1 is a 2-10C bifunctional hydrocarbon group; (p) is 2-100] and a functional group at a molecular end. The oligomer is obtained, for example, by reacting a polyol component with a hydroxy group of a polyfunctional (meth)acylate monomer containing the hydroxy group, and a monoepoxide, and further reacting the product with a (polymer) compound having two or more isocylanate groups so that the free isocyanate group may not substantially remain.