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

US4742131A Method of controlling polymerization temperature 失效
标题翻译：控制聚合温度的方法
公开(公告)号：US4742131A
公开(公告)日：1988-05-03
申请号：US939690
申请日：1986-12-09
申请人： Tadashi Asanuma , Mitsuru Ito , Kaneo Ito , Yoshiyuki Funakoshi , Akihiko Nakajima
发明人： Tadashi Asanuma , Mitsuru Ito , Kaneo Ito , Yoshiyuki Funakoshi , Akihiko Nakajima
IPC分类号： B01J19/00 , C08F2/00 , C08F2/02 , C08F110/06
CPC分类号： B01J19/0013 , C08F110/06 , B01J2219/00058 , B01J2219/00063 , B01J2219/002 , B01J2219/00213 , B01J2219/0022 , B01J2219/00238 , Y10S526/902
摘要： Disclosed herein is a method for controlling the polymerization temperature in a polymerization apparatus equipped with a cooling system in which steam, which has occurred in the presence of a volatile liquid medium in a reaction system, is condensed in a reflux condenser and the resulting noncondensable gas and condensate are then returned to the reaction system, thereby removing the polymerization heat. A portion of the noncondensable gas is recirculated to the cooling system. The flow rate of the noncondensable gas to be recirculated and the flow rate of a cooling medium to be introduced into the reflux condenser are controlled in accordance with the temperature of the reaction system.
摘要翻译：本文公开了一种用于控制聚合装置中的聚合温度的方法，所述聚合装置配备有冷却系统，其中在反应体系中的挥发性液体介质存在下发生的蒸汽在回流冷凝器中冷凝，并且得到的不可冷凝气体然后将冷凝物返回到反应体系中，从而除去聚合热。不可冷凝气体的一部分被再循环到冷却系统。根据反应体系的温度来控制要再循环的不可冷凝气体的流量和引入回流冷凝器的冷却介质的流量。

2. 发明授权

US4729772A Separation method of polymer powder and carrier gas 失效
标题翻译：聚合物粉末和载气的分离方法
公开(公告)号：US4729772A
公开(公告)日：1988-03-08
申请号：US936771
申请日：1986-12-02
申请人： Tadashi Asanuma , Yoshiyuki Funakoshi , Kaneo Ito , Akihiko Nakajima
发明人： Tadashi Asanuma , Yoshiyuki Funakoshi , Kaneo Ito , Akihiko Nakajima
IPC分类号： B04C5/14 , B01D45/12 , B04C5/00 , B04C5/15 , B04C5/18 , B04C5/185 , B04C9/00
CPC分类号： B04C5/185 , B04C5/00 , B04C5/18 , B04C9/00 , B04C2009/002
摘要： Polymer powder is separated from a carrier gas by separating the polymer powder from the carrier gas in a cyclone separator, drawing the thus-separated polymer powder through a bottom part of the separator into a hopper, feeding out the polymer powder by a rotary feeder from the hopper while controlling the revolution speed of the rotary feeder in accordance with the powder level in the hopper, and controlling the volume of a purge gas, which is introduced into a polymer powder guide extending between the separator and the hopper for the prevention of plugging thereof, in accordance with the revolution speed of the rotary feeder. The height of the top of the powder in the hopper is maintained at a predetermined constant level.
摘要翻译：通过在旋风分离器中将载体气体中的聚合物粉末分离出来，将聚合物粉末与载气分离，将由此分离的聚合物粉末通过隔板的底部拉入料斗，通过旋转进料器将聚合物粉末从料斗，同时根据料斗中的粉末水平控制旋转进料器的转速，并控制吹扫气体的体积，该吹扫气体被引入到在隔板和料斗之间延伸的聚合物粉末导向件中以防止堵塞根据旋转进给器的转速。料斗中粉末顶部的高度保持在预定的恒定水平。

3. 发明授权

US4772661A Process for the production of block copolymer of propylene 失效
标题翻译：生产丙烯嵌段共聚物的方法
公开(公告)号：US4772661A
公开(公告)日：1988-09-20
申请号：US934801
申请日：1986-11-25
申请人： Tadashi Asanuma , Mitsuru Ito , Kaneo Ito , Shigeru Kimura , Nobutaka Uchikawa , Ichiro Fujio
发明人： Tadashi Asanuma , Mitsuru Ito , Kaneo Ito , Shigeru Kimura , Nobutaka Uchikawa , Ichiro Fujio
IPC分类号： B23Q39/02 , C08F2/00 , C08F297/08
CPC分类号： C08F297/083
摘要： A block copolymer of propylene is produced by using propylene itself as a liquid medium, conducting continuous polymerization (former-stage polymerization) of propylene alone or propylene and a small amount of ethylene at first and then conducting batchwise copolymerization (latter-stage polymerization) of ethylene and propylene. The amount of an activity improver to be added to a polymerization tank for the latter-stage polymerization and/or the polymerization time of the latter-stage polymerization are controlled in accordance with the amount of a slurry transferred from a polymerization tank for the former-stage polymerization to the polymerization tank for the latter-stage polymerization so as to maintain the ratio of the amount of the polymer polymerized by the former-stage polymerization to the amount of the polymer polymerized by the latter-stage polymerization constant in the block copolymer.
摘要翻译：丙烯的嵌段共聚物通过使用丙烯本身作为液体介质，首先进行单独的丙烯或丙烯的连续聚合（前段聚合）和少量乙烯，然后进行分批共聚（后期聚合）乙烯和丙烯。添加到用于后期聚合的聚合槽中的活性改进剂的量和/或后期聚合的聚合时间的量根据从前者聚合的聚合槽转移的浆料的量来控制，进行后段聚合的聚合槽进行聚合，以保持前段聚合所聚合的聚合物的量与通过嵌段共聚物中的后期聚合常数聚合的聚合物的量的比例。

4. 发明授权

US4921905A Process for the production of block copolymer of propylene and ethylene 失效
标题翻译：制备丙烯和乙烯的嵌段共聚物的方法
公开(公告)号：US4921905A
公开(公告)日：1990-05-01
申请号：US205484
申请日：1988-06-01
申请人： Ichiro Fujio , Kaneo Ito , Tadashi Asanuma
发明人： Ichiro Fujio , Kaneo Ito , Tadashi Asanuma
IPC分类号： C08F293/00 , B01J19/18 , C08F2/00 , C08F2/01 , C08F297/08
CPC分类号： B01J19/1862 , C08F297/083 , B01J2208/00539 , B01J2208/00548 , B01J2219/00162 , B01J2219/00164
摘要： A block copolymer of propylene can be obtained with its quality controlled uniform by conducting at first continuous polymerization of propylene in a polymerization system, receiving a polymer slurry, which has been discharged continuously from the polymerization system, in a batchwise polymerization tank, feeding ethylene to the tank to conduct batchwise polymerization of ethylene and propylene. Upon discharge of a copolymer slurry formed by the preceding batchwise polymerization, at least a predetermined amount of unreacted ethylene is left over in the tank. Into the tank with the unreacted ethylene still left over therein, there are simultaneously charged the polymer slurry from the polymerization system and a deactivator. During this charging, ethylene is not supplied. The charging rate of the deactivator is controlled in such a way that the partial pressure of ethylene in the vapor phase of the tank always reaches a predetermined value at the time point of completion of reception of the polymer slurry therein.
摘要翻译：丙烯的嵌段共聚物可以通过在聚合体系中首先连续聚合丙烯而进行质量控制的均匀化，接受在间歇式聚合槽中连续从聚合体系中排出的聚合物浆料，将乙烯加入到该罐进行乙烯和丙烯的分批聚合。在排出通过前述分批聚合形成的共聚物浆料时，至少预定量的未反应的乙烯留在罐中。在未反应的乙烯仍然残留在罐中的同时，从聚合体系中同时加入聚合物淤浆和失活剂。在充电期间，不提供乙烯。以这样的方式控制失活剂的充电速率，使得在其中的聚合物浆料的接收完成时，罐的气相中的乙烯分压总是达到预定值。

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