Process for preparing styrenic resin
    1.
    发明授权
    Process for preparing styrenic resin 失效
    苯乙烯树脂的制备方法

    公开(公告)号:US5756658A

    公开(公告)日:1998-05-26

    申请号:US765462

    申请日:1997-01-27

    摘要: A styrenic resin is prepared by a method which comprises extruding a styrenic polymer powder having a syndiotactic configuration at a molding temperature of from the melting point of the polymer to 400.degree. C. at an extrusion rate meeting the equation Q/(D.times.H.times.V)=2.0.times.10.sup.4 to 6.0.times.10.sup.5, by the use of an extruder provided with one or more vents having an internal pressure of 0 to 760 Torr, wherein Q is an extrusion rate (kg/hr), D is a screw diameter (m), H is a screw groove depth (m), and V is a screw peripheral speed (m/sec); a residual volatile component, such as a monomer in the styrenic polymer powder having the syndiotactic configuration, can economically and efficiently be decreased at the time of extrusion, whereby a molding material having a good shape and containing a reduced amount of the residual volatile component can efficiently be prepared to prevent the emission of an objectionable odor at the time of the extrusion or molding.

    摘要翻译: PCT No.PCT / JP96 / 01359 Sec。 371日期1997年1月27日 102(e)日期1997年1月27日PCT提交1996年5月23日PCT公布。 WO96 / 37353 PCT出版物 日期:1996年11月28日苯乙烯树脂通过以下方法制备:将聚合物的间同立构构型在从聚合物的熔点到400℃的成型温度下以满足方程式Q / (D×H×V)= 2.0×10 4〜6.0×10 5,通过使用具有一个或多个内部压力为0至760托的通气口的挤出机,其中Q为挤出速率(kg / hr),D为螺杆直径 m),H是螺纹槽深度(m),V是螺杆圆周速度(m / sec); 具有间同构型的苯乙烯类聚合物粉末中的单体等残留挥发性成分在挤出时可以经济有效地降低,由此,具有良好形状并含有减少量的挥发性成分的成型材料可以 有效地准备好以防止在挤出或模塑时发出令人不快的气味。

    Process for preparing styrenic resin
    2.
    发明授权
    Process for preparing styrenic resin 失效
    苯乙烯树脂的制备方法

    公开(公告)号:US6071999A

    公开(公告)日:2000-06-06

    申请号:US33237

    申请日:1998-03-03

    CPC分类号: C08F6/005 C08F6/02

    摘要: A process for preparing a styrenic resin is herein disclosed which comprises the step of volatilizing extrudinga styrenic polymer (SPS) powder having a syndiotactic configuration in the presence of water, an alcohol or an antioxidant by the use of an extruder to obtain pellets. According to this process, the operation of volatilization extrusion is done in the presence of water, the alcohol or the antioxidant to stably and efficiently prepare the SPS pellets in which yellowing is inhibited, and the operation of the volatilization extrusion is carried out in the presence of water to stably and efficiently prepare the SPS pellets containing a less amount of a remaining volatile component such as an unreacted monomer.

    摘要翻译: 本文公开了一种制备苯乙烯树脂的方法,该方法包括通过使用挤出机在水,醇或抗氧化剂存在下挥发具有间同构型的苯乙烯聚合物(SPS)粉末以获得颗粒的步骤。 根据该方法,在水,醇或抗氧化剂的存在下进行挥发挤出的操作,以稳定且有效地制备抑制黄变的SPS颗粒,并且在存在下进行挥发挤出的操作 的水以稳定且有效地制备含有较少量的剩余挥发性组分如未反应单体的SPS颗粒。

    Process for preparing styrenic resin
    3.
    发明授权
    Process for preparing styrenic resin 失效
    苯乙烯树脂的制备方法

    公开(公告)号:US5760172A

    公开(公告)日:1998-06-02

    申请号:US765463

    申请日:1997-01-27

    IPC分类号: C08F6/00 C08F6/02 C08J3/18

    CPC分类号: C08F6/005 C08F6/02

    摘要: A process for preparing a styrenic resin is herein disclosed which comprises the step of volatilizing-extruding a styrenic polymer (SPS) powder having a syndiotactic configuration in the presence of water, an alcohol or an antioxidant by the use of an extruder to obtain pellets. According to this process, the operation of volatilization-extrusion is done in the presence of water, the alcohol or the antioxidant to stably and efficiently prepare the SPS pellets in which yellowing is inhibited, and the operation of the volatilization-extrusion is carried out in the presence of water to stably and efficiently prepare the SPS pellets containing a less amount of a remaining volatile component such as an unreacted monomer.

    摘要翻译: PCT No.PCT / JP96 / 01328 Sec。 371日期1997年1月27日 102(e)日期1997年1月27日PCT提交1996年5月20日PCT公布。 公开号WO96 / 37352 日本特开1996年11月28日本文公开了一种苯乙烯树脂的制备方法,其包括在水,醇或抗氧化剂存在下,通过使用下述方法挥发挤出具有间同构型的苯乙烯类聚合物(SPS)粉末的步骤: 挤出机得到颗粒。 根据该方法,在水,醇或抗氧化剂的存在下进行挥发挤出的操作,以稳定且有效地制备抑制黄变的SPS颗粒,并且挥发挤出的操作在 水的存在以稳定且有效地制备含有较少量的剩余挥发性组分如未反应单体的SPS颗粒。