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来源：百度知道 编辑：UC知道 时间：2024/05/25 02:24:58
BACKGROUND OF THE INVENTION
1 . Field of the Invention
The present invention relates to a process for producing a styrene –based polymer,for an efficient production of a styrene-based polymer having a stereostructure in which the chains of polymers are in a high syndiotactic configuration .
2. Description of the related arts
Styrene-based polymers having a sterostructure which is in atactic or isotactic configuration have heretofore been well known ,but recently Styrene-based polymers having a stereostructure of a high syndiotactic configuration have been developed one of which is disclosed in Japanese patent application laid-open no .187708/1987.
The reaction system ,in which Styrene-based polymers having syndiotactic configuration are under production ,solidifies when the polymerization reaction proceeds to a conversion of approximately 20% ,while the reaction continues further until a higher conversion is accomplished . by ap
1 . Field of the Invention
The present invention relates to a process for producing a styrene –based polymer,for an efficient production of a styrene-based polymer having a stereostructure in which the chains of polymers are in a high syndiotactic configuration .
2. Description of the related arts
Styrene-based polymers having a sterostructure which is in atactic or isotactic configuration have heretofore been well known ,but recently Styrene-based polymers having a stereostructure of a high syndiotactic configuration have been developed one of which is disclosed in Japanese patent application laid-open no .187708/1987.
The reaction system ,in which Styrene-based polymers having syndiotactic configuration are under production ,solidifies when the polymerization reaction proceeds to a conversion of approximately 20% ,while the reaction continues further until a higher conversion is accomplished . by ap
背景的发明1 。领域的发明，本发明涉及到一个过程，产生了苯乙烯基聚合物，为一个有效率的生产一苯乙烯基聚合物具有stereostructure在其中链聚合物是在一个高规的配置。2 。说明相关的艺术苯乙烯基聚合物具有sterostructure这是在无规或规配置已在此之前已广为人知，但最近苯乙烯基聚合物具有stereostructure一个高规的配置已开发是其中之一透露，在日本专利应用下岗开放没有.187708/1987 。反应体系，在其中苯乙烯基聚合物有规配置是根据生产，巩固时，聚合反应的收益转换约20 ％ ，而继续进一步反应，直到较高的转换完成。运用适当的剪切力在说凝固阶段，聚合物在一个良好的粉末形式canbe取得，如果反应速率在早期阶段是太高，不过，一个大的剪切力，是需要抑制的形成，宏观粒子，这是涉及在担心内该reactior可能完全涵盖的固体聚合物。也有恐惧造成了熔体融合的聚合物，因为它是难以控制的反应热所造成的反应率高与此相反，如果反应速率降低，为了抑制形成的宏观粒子，它需要多少时间才能完成聚合和生产效率降低。总结发明的对象目前的发明，是要提供一个过程，一个有效率的生产苯乙烯基聚合物有规配置的粘附聚合物，以反应堆或凝固的聚合物到的蛋糕。另一个对象的本发明是提供一个过程，一个有效率的生产苯乙烯-基聚合物有规配置，稳定运行的聚合与低功耗。
一切OK了..............