Process for preparing polyarylene sulfides of increased molecular weight
    1.
    发明授权
    Process for preparing polyarylene sulfides of increased molecular weight 失效
    制备分子量增加的聚亚芳基硫化物的方法

    公开(公告)号:US5278283A

    公开(公告)日:1994-01-11

    申请号:US819680

    申请日:1992-01-13

    IPC分类号: C08G75/02 C08G75/14

    CPC分类号: C08G75/025

    摘要: Disclosed is a process for preparing a polyarylene sulfide, which involves polycondensing a dihalogenated aromatic compound with a source of sulfur in an organic polar solvent while dehydrating at pressure under which polycondensation is performed. This process avoids dehydration operation of the raw materials, particularly the source of sulfur, prior to polycondensation, thereby resulting in the production of the polyarylene sulfide having a high molecular weight.

    摘要翻译: 公开了一种制备聚芳硫醚的方法,其涉及使二卤代芳族化合物与有机极性溶剂中的硫源缩聚,同时在进行缩聚的压力下进行脱水。 该方法在缩聚之前避免了原料,特别是硫源的脱水操作,从而导致生产具有高分子量的聚芳硫醚。

    Process for continuous production of polyarylene sulfide
    4.
    发明授权
    Process for continuous production of polyarylene sulfide 失效
    连续生产聚芳硫醚的工艺

    公开(公告)号:US07026439B2

    公开(公告)日:2006-04-11

    申请号:US10473366

    申请日:2002-03-15

    IPC分类号: C08G75/00 C08G75/14 C08G75/18

    CPC分类号: C08G75/025

    摘要: There is disclosed a process for continuously producing a polyarylene sulfide which comprises reacting a sulfur source with a dihalogenated aromatic compound in an aprotic organic solvent, characterized by maintaining the content of the dihalogenated aromatic compound in the polymerization liquid after the substantial completion of the polymerization reaction at 5 mg/g or higher. It is made possible by the process according to the present invention to efficiently produce the polyarylene sulfide which has a high molecular weight and is excellent in thermal stability.

    摘要翻译: 公开了一种连续生产聚芳硫醚的方法,其包括在非质子有机溶剂中使硫源与二卤代芳族化合物反应,其特征在于在聚合反应基本上完成后维持聚合液中的二卤代芳族化合物的含量 在5mg / g以上。 通过本发明的方法可以有效地制备分子量高且热稳定性优异的聚芳硫醚。

    Method for reproducing lithium sulfide and method for producing polyarylene sulfide
    5.
    发明申请
    Method for reproducing lithium sulfide and method for producing polyarylene sulfide 审中-公开
    再生硫化锂的方法及其制备方法

    公开(公告)号:US20050118093A1

    公开(公告)日:2005-06-02

    申请号:US10498895

    申请日:2002-12-17

    IPC分类号: C01B17/22 C08G75/02

    摘要: A method for reproducing lithium sulfide, including the steps of reacting lithium halide generated as a byproduct during the production of a polyarylene sulfide by a reaction between lithium sulfide and a halogenated aromatic compound with sodium carbonate to generate lithium sulfide, isolating the lithium carbonate and reacting the lithium carbonate with a sulfur compound to generate the lithium sulfide. According to the above method, lithium sulfide having a less Na content can be reproduced from lithium halide generated as a byproduct during the production of a polyarylene sulfide.

    摘要翻译: 一种再生硫化锂的方法,包括以下步骤:在硫化亚铜与卤代芳族化合物与碳酸钠反应生成聚芳硫醚期间作为副产物生成的卤化锂,生成硫化锂,分离碳酸锂并反应 碳酸锂与硫化合物一起生成硫化锂。 根据上述方法,可以在生产聚芳硫醚期间作为副产物产生的卤化锂再现具有较少Na含量的硫化锂。

    Process for producing polyarylene sulfide
    9.
    发明授权
    Process for producing polyarylene sulfide 失效
    生产聚芳硫醚的方法

    公开(公告)号:US06982312B2

    公开(公告)日:2006-01-03

    申请号:US10471663

    申请日:2002-03-04

    IPC分类号: C08G75/00

    CPC分类号: C08G75/025 C08G75/0254

    摘要: There is disclosed a process for producing a polyarylene sulfide (PAS) which comprises reacting a sulfur source with a dihalogenated aromatic compound in the presence of an aprotic organic solvent, characterized in that the process comprises at least one polymerization reaction step wherein a polymer phase as a dispersed phase is in the form of spherical droplets. It is made possible by the continuous polymerization process to discharge the polymer phase and solvent phase from a polymerization vessel at a constant ratio and as a result, to maintain PAS composition (concentration) at a constant level at all times, and thus to provide a continuous PAS production process which is effective for enhancing its molecular weight and stabilizing the same.

    摘要翻译: 公开了一种生产聚芳硫醚(PAS)的方法,该方法包括在非质子有机溶剂存在下使硫源与二卤代芳族化合物反应,其特征在于该方法包括至少一个聚合反应步骤,其中聚合物相为 分散相是球形液滴的形式。 通过连续聚合方法可以以恒定比例从聚合容器中排出聚合物相和溶剂相,结果,始终保持PAS组成(浓度)在恒定水平,从而提供一种 连续的PAS生产工艺,对于提高其分子量和稳定分子量是有效的。

    Polyarylene sulfide resin composition, and moldings and connectors made of it
    10.
    发明授权
    Polyarylene sulfide resin composition, and moldings and connectors made of it 失效
    聚芳硫醚树脂组合物,以及由其制成的模制品和连接件

    公开(公告)号:US06316536B1

    公开(公告)日:2001-11-13

    申请号:US09306050

    申请日:1999-05-06

    IPC分类号: C08J510

    摘要: Provided is a polyarylene sulfide resin composition of which the moldings are burred little and which has good mechanical properties and good flow moldability. The composition comprises from 20 to 90% by weight of a polyarylene sulfide and from 10 to 80% by weight of an inorganic filler, and is characterized in that its burrs are on the level of at most 120 &mgr;m, that it has a weld strength of at least 50 MPa and that the length of its spiral flow having a thickness of 1 mm is at least 100 mm. Preferably, the polyarylene sulfide to be in the composition has a specific index to the degree of branching and a specific flexural strength.

    摘要翻译: 本发明提供一种聚酰亚胺硫化物树脂组合物,其模制品几乎没有被磨损,并且具有良好的机械性能和良好的流动成型性。 该组合物包含20至90重量%的聚芳硫醚和10至80重量%的无机填料,其特征在于其毛刺的水平至多为120微米,其焊接强度 至少50MPa,并且其具有1mm厚度的螺旋流的长度为至少100mm。 优选地,组合物中的聚芳硫醚具有对支化度的特定指标和特定的弯曲强度。