| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide: an aromatic vinyl-based copolymer which is excellent in compatibility with polystyrene resin and hydrophobic while having a hydroxyl in a side chain, and has a high glass transition temperature; a production method thereof; and a foam molding excellent in rigidity, impact resistance, heat insulating properties, surface appearance and dimension stability and antistatic properties, the foam molding, when added in a small amount, being uniformly dispersed in a polystyrene resin foaming particle or a polystyrene foam molding to give a high closed cell rate and a sufficient effect of preventing scattering of foaming agent thereto. <P>SOLUTION: A copolymer having oxazoline group in a side chain is synthesized and hydrated with water in an organic solvent, whereby the aromatic vinyl-based copolymer which is hydrophilic and soluble to an organic solvent while having a hydroxyl in a side chain, and has a high glass transition temperature can be easily obtained. The polystyrene resin foam molding includes the polymer which has excellent compatibility to polystyrene resin. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
