Thermosetting composition for injection molding, method for producing molded article using the same, and cured product

A method for producing a molded article comprising:

• supplying a thermosetting composition for injection molding into a plunger, the thermosetting composition for injection molding comprises:
• (A) a di(meth)acrylate compound having a structural unit represented by the following formula (A1), and
• (B) a thermal polymerization initiator:
• wherein in the formula (A1),
• V101 is a substituted or unsubstituted divalent aromatic hydrocarbon group including 6 to 12 ring carbon atoms, a substituted or unsubstituted divalent alicyclic hydrocarbon group including 5 to 12 ring carbon atoms, or a substituted or unsubstituted divalent aliphatic hydrocarbon group including 2 to 30 carbon atoms;
• p represents the average number of structural units;
• and
• when p is 2 or more, two or more V101's may be the same as or different from each other;
• filling the thermosetting composition for injection molding supplied into the plunger into a cavity of a mold using the plunger, the cavity being set to be a gauge pressure of −90 kPa or lower (vacuum pressure 10 kPa) and an oxygen amount of 0.2×cavity volume/22.4 mol or smaller, or to be a gauge pressure of −90 kPa or lower (vacuum pressure 10 kPa) and an oxygen amount of 0.2× cavity volume/22.4 mol or smaller, and
• thermosetting the thermosetting composition for injection molding filled into the cavity.