申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0357079A2
公开(公告)日:1990-03-07
An aromatic polyester of good processability and heat resistance is prepared by charging starting materials in a reaction vessel, carrying out polycondensation reaction in the vessel until the flow temperature of the produced aromatic polyester falls in the temperature range of from 240°C to a temperature of 20°C below the reaction temperature and discharging the reaction product from the vessel in the molten state.
The aromatic polyester obtained by the present invention can be used molded into various forms such as fiber, film, etc. In addition, compositions comprising this aromatic polyester and glass fibers, mica, talc, silica, potassium titanate, wollastonite, calcium carbonate, quartz, iron oxide, graphite, carbon fibers, etc. can be used in machine parts, electric and electronic parts and automobile parts because of their excellent mechanical properties, electric properties, chemical resistance and oil resistance.
在反应容器中加入起始材料,在容器中进行缩聚反应,直到生成的芳香族聚酯的流动温度降至 240°C 至低于反应温度 20°C 的温度范围内,然后将反应产物以熔融状态从容器中排出,即可制备出加工性和耐热性良好的芳香族聚酯。
本发明得到的芳香族聚酯可用于模塑成各种形式,如纤维、薄膜等。此外,由这种芳香族聚酯和玻璃纤维、云母、滑石粉、二氧化硅、钛酸 钾、硅灰石、碳酸钙、石英、氧化铁、石墨、碳纤维等组成的组合物,由于具有优异 的机械性能、电性能、耐化学性和耐油性,可用于机械零件、电气电子零件和汽车零件。