A polyarylene sulfide has an inherent viscosity [η inh] of 0.1 to 0.5 dl/g, a weight-average molecular weight of 1 x 10⁴ to 2 x 10⁵; a ratio of the inherent viscosity [ η inh] to a calculated viscosity [η]calc ([η inh]/[η ]calc ) of 0.4/1 to 0.8/1; and a degree of whiteness of 50 or higher when measured in accordance with whiteness testing procedures (JIS P8123). The polyarylene sulfide is prepared by reaction by contacting at least one member of a metallic sulfide (A) selected from an alkali metal sulfide and an alkali metal hydrosulfide with a dihalogen aromatic compound (B) and an aromatic compound (C) having three or more than three functional groups in a polar solvent in a molar ratio of the dihalogen aromatic compound (B) to the metallic sulfide (A) [(B)/(A)] ranging from 1.035/1 to 1.300/1 and in a molar ratio of the aromatic compound (C) to the dihalogen aromatic compound (B) [(C)/(B)] ranging from 0.003/1 to 0.05/1.
A polyarylene sulfide resin composition contains the polyarylene sulfide having the above properties and and at least one member of a filler selected from a fiber filler and a powdery or granular filler.
The polyarylene sulfide resin composition has the mechanical strength, heat resistance, long-term stability, and chemical resistance superior to the polyarylene sulfide.
一种聚芳基
硫醚的固有粘度[η inh]为 0.1 至 0.5 dl/g,重量平均分子量为 1 x 10⁴ 至 2 x 10⁵;固有粘度[η inh]与计算粘度[η]calc 的比率([η inh]/[η ]calc )为 0.4/1 至 0.8/1;按照白度测试程序(JIS P8123)测量,白度为 50 或以上。聚芳基
硫醚的制备方法是将选自碱
金属
硫化物和碱
金属
硫氢化物的
金属
硫化物 (A) 中的至少一种与二卤代芳香族化合物 (B) 和具有三个或三个以上官能团的芳香族化合物 (C) 在极性溶剂中接触反应,二卤代芳香族化合物 (B) 与
金属
硫化物 (A) 的摩尔比[(B)/(A)]为 1.035/1至1.300/1,芳香族化合物(C)与二卤芳香族化合物(B)的摩尔比[(C)/(B)]为0.003/1至0.05/1。
聚芳基
硫醚
树脂组合物包含具有上述特性的聚芳基
硫醚和至少一种选自纤维填料和粉状或颗粒状填料的填料。
聚芳基
硫醚
树脂组合物具有优于聚芳基
硫醚的机械强度、耐热性、长期稳定性和耐
化学性。