公开(公告)号：US5241043A

公开(公告)日：1993-08-31

申请号：US632692

申请日：1990-12-24

申请人： Minoru Senga

发明人： Minoru Senga

IPC分类号： C08F2/00 ,  C08G75/00 ,  C08G75/02 ,  C08G75/06

CPC分类号： C08G75/0254 ,  C08G75/0222

摘要： A process for preparing a granular polyarylene sulfide having a high molecular weight is a one-stage polycondensation process which involves subjecting a dihalogen aromatic compound to polycondensation with a source of sulfur in the presence of a polymerization aid in an organic polar solvent and setting the temperature for polycondensation to a range from 220.degree. C. to 248.degree. C. for a predetermined period of time prior to completion of polycondensation up to completion of polycondensation. The resulting granular polyarylene sulfide is suitable for molding or forming into sheets, films, fibers and so on, causes less burrs when subjected to injection molding, has a high molecular weight sufficient to create the property of forming a gel, and is easy to handle.

公开(公告)号：US5231163A

公开(公告)日：1993-07-27

申请号：US746819

申请日：1991-08-15

申请人： Wataru Kosaka ,  Minoru Senga ,  Norio Ogata ,  Tatsuya Housaki

发明人： Wataru Kosaka ,  Minoru Senga ,  Norio Ogata ,  Tatsuya Housaki

IPC分类号： C08G75/02 ,  C08K7/14

CPC分类号： C08G75/025 ,  C08G75/0222 ,  C08G75/0231 ,  C08K7/14

摘要： A polyarylene sulfide has an inherent viscosity [.eta..sub.i n h ] of 0.1 to 0.5 dl/g, a weight-average molecular weight of 1.times.10.sup.4 to 2.times.10.sup.5 ; a ratio of the inherent viscosity [.eta..sub.i n h ] to a calculated viscosity [.eta.].sub.calc ([.eta..sub.i n h /[.eta.].sub.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.

摘要翻译： 聚芳硫醚的特性粘度[η]为0.1〜0.5dl / g，重均分子量为1×10 4〜2×105; 特性粘度[η] h与计算出的粘度η（h /η/ calc）的比值为0.4 / 1至0.8 / 1; 并且根据白度测试程序（JIS P8123）测量时白度为50或更高。 通过使选自碱金属硫化物和碱金属氢硫化物的金属硫化物（A）的至少一种与二卤代芳香族化合物（B）和具有三个以上的碱金属硫化物的芳香族化合物（C）接触而使反应来制备聚芳硫醚 在极性溶剂中的三官能团，二卤代芳香族化合物（B）与金属硫化物（A）[（B）/（A）]的摩尔比为1.035 / 1〜1.300 / 1，摩尔比 的芳族化合物（C）与二卤代芳香族化合物（B）[（C）/（B）]的比例为0.003 / 1〜0.05 / 1。 聚芳硫醚树脂组合物含有具有上述性能的聚芳硫醚和至少一种选自纤维填料和粉末或颗粒填料的填料。 聚芳硫醚树脂组合物具有优于聚芳硫醚的机械强度，耐热性，长期稳定性和耐化学性。

公开(公告)号：US5093469A

公开(公告)日：1992-03-03

申请号：US400915

申请日：1989-08-30

申请人： Minoru Senga

发明人： Minoru Senga

IPC分类号： C08G75/02

CPC分类号： C08G75/0259 ,  C08G75/0222

摘要： Polyarylene sulfides are prepared by reacting a dihalogen aromatic compound with a sodium hydrosulfide in the presence of an alkali metal aminoalkanoate and a lithium halide in an organic polar solvent. This process can prevent a decomposition of the sodium hydrosulfide during dehydration and produce the polyarylene sulfides in a granular form in high yields and with high efficiency.The polyarylene sulfides obtainable by this process are high in molecular weight and degree of whiteness and low in a content of salts remaining therein. Furthermore, the polyarylene sulfides are in the granular form so that they can be handled with ease because of their readily separability and washability.