| 摘要 |
PURPOSE: To obtain a resin which can give a three-dimensional molding excellent in mechanical properties, thermal properties, and 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 or II (wherein X<1> and X<2> each is the residue formed from a diisocyanate by removing the isocyanate groups; Y<1> , Y<3> , and Y<4> each is the residue formed from a trihydric alcohol by removing the hydroxyl groups; and Y<2> is the residue formed from a di- or trihydric alcohol by removing the hydroxyl groups; R<1> , R<2> , R<4> , and R<5> each is H or CH3 ; R<3> , R<6> , and R<7> each is a 5-21C alkyl; and n is 1 or 2) and at least one vinyl monomer comprising either (meth)acrylic morpholide or a mixture thereof with a diol di(meth)acrylate, in a weight ratio of 100/25 to 100/150. This resin is mixed with inorganic fibrous whiskers and/or fine inorganic solid particles to obtain the objective composition. |
