| 摘要 |
PCT No. PCT/JP82/00142 Sec. 371 Date Dec. 10, 1982 Sec. 102(e) Date Dec. 10, 1982 PCT Filed Apr. 28, 1982 PCT Pub. No. WO82/03867 PCT Pub. Date Nov. 11, 1982.Aromatic polyesters are obtained by copolycondensing isophthalic acid and terephthalic acid or derivatives thereof with bis(hydroxyphenyl) sulfone and 2,2-bis(4'-hydroxyphenyl)propane. These aromatic polyesters have excellent molding workability. From these polyesters, colorless, transparent moldings can be obtained by compression, extrusion or injection molding methods. The products thus obtained have excellent mechanical and electrical properties and improved heat resistance. |
