公开(公告)号：US06657041B1

公开(公告)日：2003-12-02

申请号：US09868498

申请日：2001-06-18

申请人： Katsuhiko Machida ,  Susumu Fukawa ,  Shinji Ogawa ,  Toshio Katoh ,  Makoto Sukegawa ,  Yoshihiro Irizato

发明人： Katsuhiko Machida ,  Susumu Fukawa ,  Shinji Ogawa ,  Toshio Katoh ,  Makoto Sukegawa ,  Yoshihiro Irizato

IPC分类号： C08G6910

CPC分类号： C08G73/1092 ,  C08G69/10

摘要： A production process of high molecular weight polysuccinimide having a weight average molecular weight of 40,000 or higher is disclosed, which comprises the following steps: 1) mixing and heating aspartic acid and an acidic catalyst to produce a liquid, low molecular weight polymer mixture, 2) separating the acidic catalyst to appropriate extent from the liquid, low molecular weight polymer mixture, thereby directly changing a polymer-containing phase from a liquid phase into a solid phase to produce a solid, low molecular weight polymer mixture, and 3) conducting solid-state polymerization on the thus-obtained solid, low molecular weight polymer mixture. This process can be practiced in a simple apparatus, and is free of problems such as formation of a highly viscous phase, excessive formation of foam, and formation of a reaction mixture into coherent mass.

摘要翻译： 公开了重均分子量为40,000以上的高分子量聚琥珀酰亚胺的生产方法，其包括以下步骤：1）将天冬氨酸和酸性催化剂混合加热以制备液体低分子量聚合物混合物2 ）将酸性催化剂从液态低分子量聚合物混合物中分离出适当的程度，由此直接将含聚合物的相从液相转变为固相以产生固体低分子量聚合物混合物，和3）导电固体 在这样得到的固体低分子量聚合物混合物上进行状态聚合。 该方法可以在简单的装置中实施，并且没有诸如高粘性相的形成，泡沫过度形成以及反应混合物形成连续质量的问题。

公开(公告)号：US4537954A

公开(公告)日：1985-08-27

申请号：US587592

申请日：1984-03-08

申请人： Toshihiko Ando ,  Norifumi Ito ,  Tetsuyuki Matsubara ,  Kozo Ichikawa ,  Susumu Fukawa ,  Tetsuo Maeda

发明人： Toshihiko Ando ,  Norifumi Ito ,  Tetsuyuki Matsubara ,  Kozo Ichikawa ,  Susumu Fukawa ,  Tetsuo Maeda

IPC分类号： C08F6/00 ,  C08F6/06 ,  C08F6/10 ,  C08F6/26 ,  C08G6/00 ,  C08J3/00

CPC分类号： C08F6/10

摘要： A continuous process for the preparation of polymer compositions having low volatile content which comprises passing a styrene polymer-containing polymerization fluid composition obtained by solution polymerization or bulk polymerization through a volatile component separator comprising vertical foaming preheaters and vacuum vessels directly connected therewith and thereby removing volatile components continuously from the polymerization fluid composition in three stages to obtain a polymer composition having low volatile content, the process being characterized in that each of three stages includes at least one vertical foaming preheater and one vacuum vessel, the first stage is carried out under such pressure and temperature conditions that the polymerization fluid composition leaving this stage contains said styrene polymer in an amount of 60 to 80% by weight and the temperature of the polymerization fluid composition passing through this stage lies between 70.degree. and 120.degree. C., the second stage is carried out under such pressure and temperature conditions that the molten polymer composition leaving this stage has a volatile content of not greater than 1% by weight and can retain good fluidity, and the third stage is carried out in such a way that devolatilization is effected at a pressure of 50 Torr or less in the presence of a highly volatile foaming agent.

摘要翻译： 一种用于制备具有低挥发物含量的聚合物组合物的连续方法，其包括使通过溶液聚合或本体聚合获得的含苯乙烯聚合物的聚合流体组合物通过包含垂直发泡预热器和与其直接连接的真空容器的挥发性组分分离器，从而除去挥发性 组分连续地从聚合流体组合物中分三个阶段获得具有低挥发物含量的聚合物组合物，其特征在于，三个阶段中的每个阶段包括至少一个垂直发泡预热器和一个真空容器，第一阶段在这种情况下进行 离开该阶段的聚合流体组合物的压力和温度条件包含60至80重量％的所述苯乙烯聚合物，并且通过该阶段的聚合流体组合物的温度为70℃至120℃， 第二阶段在离开该阶段的熔融聚合物组合物具有不大于1重量％的挥发物含量并且可保持良好流动性的压力和温度条件下进行，第三阶段以如下方式进行：第 在高挥发性发泡剂的存在下，在50托或更低的压力下进行脱挥发分。