| 摘要 |
PURPOSE: To obtain a resin which can give a three-dimensional molding having excellent dimensional accuracy by mixing a specific unsaturated urethane with at least one specific vinyl monomer in a specific proportion. CONSTITUTION: The resin comprises an unsaturated urethane represented by formula I, II, or III [wherein Z<1> is the residue formed from an urethane di- or triisocyanate by removing the isocyanate groups; Z<2> is the residue formed from a polyurethane di- or triisocyanate by removing the isocyanate groups; Z<3> is the residue formed from a polyol selected among di- and trihydric polyether, polyester, and polyetherester polyols by removing the hydroxyl groups; A<1> and A<2> each is a group represented by formula IV; A<3> is a group represented by formula V (where R<1> and R<2> each is H or CH3 , Y<1> is the residue formed from a dihydric alcohol by removing the hydroxyl groups; and Y<2> is a 2-4C alkylene); and m, n, and p each is 2 or 3] and at least one vinyl monomer comprising either (meth)acrylic morpholide or a mixture thereof with a diol di(meth)acrylate. |
