专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5449738A Process for producing ethylene-propylene block copolymer 失效
标题翻译：生产乙烯 - 丙烯嵌段共聚物的方法
公开(公告)号：US5449738A
公开(公告)日：1995-09-12
申请号：US907017
申请日：1992-07-01
申请人： Hiroyuki Koura , Takeshi Ebara , Kazuki Wakamatsu , Shouzou Kawamata , Yoshizumi Sasaki
发明人： Hiroyuki Koura , Takeshi Ebara , Kazuki Wakamatsu , Shouzou Kawamata , Yoshizumi Sasaki
IPC分类号： C08F2/34 , C08F4/60 , C08F4/658 , C08F297/08
CPC分类号： C08F297/083
摘要： The present invention relates to a process for producing ethylene propylene block copolymers excellent in appearance, elongation and impact resistance when molded by a gas phase polymerization which can be conducted in a stable manner.The process of the present invention comprises the first step of polymerizing propylene by using a catalyst system composed essentially of(A) a solid catalyst component containing magnesium, titanium, and a halogen as the indispensable ingredients,(B) an organoaluminum compound, and(C) a silicon compound represented by the formula R.sup.1 R.sup.2 Si(OR.sup.3).sub.2, wherein R.sup.1 is an alicyclic hydrocarbon group and R.sup.2 and R.sup.3 are each a hydrocarbon group, to form a propylene homopolymer, and the second step of then polymerizing ethylene and propylene with further addition of a silicon compound represented by the formula R.sup.4 R.sup.5.sub.a Si(OR.sup.6).sub.3-a, wherein R.sup.4 is an aromatic hydrocarbon group, R.sup.5 is a hydrocarbon group or an aromatic hydrocarbon group, and a is a number satisfying the equation 0.ltoreq.a
摘要翻译：本发明涉及一种生产乙烯丙烯嵌段共聚物的方法，该共聚物通过可以以稳定的方式进行的气相聚合成型而具有优异的外观，伸长率和耐冲击性。本发明的方法包括通过使用主要由（A）含有镁，钛和卤素的固体催化剂组分作为不可或缺的成分组成的催化剂体系聚合丙烯的第一步骤，（B）有机铝化合物和（ C）由式R 1 R 2 Si（OR 3）2表示的硅化合物，其中R 1是脂环族烃基，R 2和R 3各自是烃基，以形成丙烯均聚物，然后第二步再进一步聚合乙烯和丙烯添加由式R 4 R 5 a Si（OR 6）3-a表示的硅化合物，其中R 4是芳族烃基，R 5是烃基或芳族烃基，a是满足式0的数< 3，形成乙烯 - 丙烯共聚物。

2. 发明授权

US5473021A Process for producing ethylene-propylene block copolymer 失效
标题翻译：生产乙烯 - 丙烯嵌段共聚物的方法
公开(公告)号：US5473021A
公开(公告)日：1995-12-05
申请号：US176917
申请日：1994-01-03
申请人： Hiroyuki Koura , Takeshi Ebara , Kazuki Wakamatsu , Shozo Kawamata , Yoshizumi Sasaki
发明人： Hiroyuki Koura , Takeshi Ebara , Kazuki Wakamatsu , Shozo Kawamata , Yoshizumi Sasaki
IPC分类号： C08F4/658 , C08F4/60 , C08F4/654 , C08F4/80 , C08F210/16 , C08F297/08
CPC分类号： C08F297/083
摘要： A process for producing ethylene-propylene block copolymer which comprises(1) The first step of reacting propylene or a mixture of propylene and ethylene in the presence of a catalyst composed essentially of(A) a solid catalyst component containing magnesium, titanium and a halogen as the indispensable ingredients,(B) an organoaluminum compound, and(C) a silicon compound (1) represented by the formula R.sup.1 R.sup.2 Si(OR.sup.3).sub.2, wherein R.sup.1 is an alicyclic hydrocarbon group of 5-20 carbon atoms and R.sup.2 and R.sup.3 are each independently a hydrocarbon group of 1-20 carbon atoms, to form a propylene homopolymer portion or an ethylene-propylene copolymer portion having an ethylene content of 3% by weight or less, in an amount corresponding to 50-95% by weight of the total block copolymer amount, and(2) the second step of reacting a mixture of ethylene and propylene with the polymer portion obtained in the first step in the presence of the aforesaid catalyst composed essentially of the components (a), (b) and (c) and in the additional presence of a silicon compound (2) represented by the formula R.sup.4.sub.a Si(OR.sup.5).sub.4-a, wherein R.sup.4 and R.sup.5 are each independently a hydrocarbon group of 1-20 carbon atoms and a is a number satisfying the equation 0.ltoreq.a
摘要翻译：一种生产乙烯 - 丙烯嵌段共聚物的方法，其包括（1）在主要由（A）含有镁，钛和卤素的固体催化剂组分的催化剂存在下使丙烯或丙烯与乙烯的混合物反应的第一步骤作为不可或缺的成分，（B）有机铝化合物和（C）由式R 1 R 2 Si（OR 3）2表示的硅化合物（1），其中R 1是5-20个碳原子的脂环族烃基，R 2和R 3是各自独立地是1-20个碳原子的烃基，以形成丙烯均聚物部分或乙烯含量为3重量％以下的乙烯 - 丙烯共聚物部分，其量相当于所述乙烯含量的50-95重量％总共嵌段共聚物量，和（2）在上述主要由组分（a），（b）组成的催化剂存在下，使乙烯和丙烯的混合物与第一步获得的聚合物部分反应的第二步骤，和（c），另外存在由式R4aSi（OR5）4-a表示的硅化合物（2），其中R4和R5各自独立地为1-20个碳原子的烃基，a为满足方程式0 <= a <4，得到乙烯 - 丙烯嵌段共聚物，其含有乙烯含量为至少20重量％的乙烯 - 丙烯共聚物部分，其量相当于5-50重量％总嵌段共聚物量。

3. 发明授权

US5381827A Gas distributor for use in gas phase polymerization apparatus 失效
标题翻译：用于气相聚合装置的气体分配器
公开(公告)号：US5381827A
公开(公告)日：1995-01-17
申请号：US157294
申请日：1993-11-26
申请人： Hiroyuki Koura , Yoshizumi Sasaki , Kazuki Wakamatsu , Kazuyuki Takemura
发明人： Hiroyuki Koura , Yoshizumi Sasaki , Kazuki Wakamatsu , Kazuyuki Takemura
IPC分类号： B01J8/44 , C08F2/34 , B01J8/20
CPC分类号： C08F2/34 , B01J8/44 , Y10T137/85938
摘要： For use in gas phase polymerization apparatus having an agitator in a fluidized bed polymerization reactor, the present invention provides a gas distributor which has holes, and caps covering the respective holes from above and each having an opening oriented in a substantially horizontal direction at an angle of about 90 to about 135 deg with, and outwardly of, a tangent to a circle centered about the center of the reactor whereby an increase in the gas solid ratio can be prevented in the region above the distributor to ensure efficient discharge of the polymer produced, and the polymer particles can be prevented from falling into a gas room thereunder.
摘要翻译：为了在流化床聚合反应器中具有搅拌器的气相聚合装置中使用，本发明提供了一种具有孔的气体分配器和从上方覆盖相应孔的盖，每个孔具有在大致水平方向上以一定角度定向的开口约90度至约135度，并且向外以与反应器中心为中心的圆相切，从而可以在分配器上方的区域中防止气体固体比率的增加，以确保生产的聚合物的有效排放，并且可以防止聚合物颗粒落入其中的气室中。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式