THERMOSETTING COMPOSITIONS, MOLD MATERIALS, MOLD STRUCRURES AND THE TREATMENT METHODS OF THEIR DEGRADATION

摘要

A thermosetting composition which comprises an unsaturated polyester, and addition-polymerizable monomer, a shrinkage reducing agent other than aliphatic polyesters, and an aliphatic polyester, and which can be decomposed, after being set, by a decomposing solution containing a base and at least one solvent selected from the group consisting of water, methanol, ethanol and ethylene glycol at a temperature lower than the boiling point of the solution.