公开(公告)号：US5362811A

公开(公告)日：1994-11-08

申请号：US187910

申请日：1994-01-28

申请人： Tomoko Sueyoshi ,  Kenji Wakatsuru ,  Masayuki Okabe

发明人： Tomoko Sueyoshi ,  Kenji Wakatsuru ,  Masayuki Okabe

IPC分类号： B29B9/06 ,  B29B9/10 ,  B29K23/00 ,  C08F210/00 ,  C08F210/02 ,  C08F210/16 ,  C08G61/00 ,  C08G61/06 ,  C08J3/12 ,  C08L23/08 ,  C08L45/00

CPC分类号： B29B9/10 ,  C08F210/02 ,  C08F210/16 ,  B29K2023/06 ,  B29K2023/38

摘要： Disclosed is a process for preparing cycloolefin random copolymer pellets, comprising adding an organic polar solvent to a solution of a copolymer obtained by copolymerizing ethylene and a specific cycloolefin and if desired an .alpha.-olefin other than ethylene, in an amount exceeding such an amount that the liquid mixture exhibits the cloud point, separating the copolymer solution utilizing phase separation phenomenon into a concentrated phase containing the cycloolefin random copolymer in a high concentration and a dilute phase containing said copolymer in a low concentration, feeding the obtained concentrated phase to an extruder where the solvents are removed and the copolymer is melted during extrusion processing, followed by pelletizing the copolymer. According to the invention, the steps for preparing cycloolefin random copolymer pellets can be reduced, and moreover, mold staining can De inhibited in the molding process of the resultant pellets because the pellets have low contents of the low molecular weight copolymer, the unreacted monomer, etc.

摘要翻译： 公开了一种制备环烯烃无规共聚物粒料的方法，其包括将有机极性溶剂加入到通过乙烯与特定的环烯烃共聚获得的共聚物的溶液中，如果需要的话，加入乙烯以外的α-烯烃，其量超过其量 液体混合物表现出浊点，使用相分离现象将共聚物溶液分离成含有高浓度的环烯烃无规共聚物的浓缩物和含有低浓度的所述共聚物的稀相，将得到的浓相进料到挤出机中， 除去溶剂，在挤出加工过程中使共聚物熔融，然后将共聚物造粒。 根据本发明，可以减少制备环烯烃无规共聚物颗粒的步骤，此外，由于颗粒具有低含量的低分子量共聚物，未反应的单体， 等等

公开(公告)号：US5599885A

公开(公告)日：1997-02-04

申请号：US461950

申请日：1995-06-05

申请人： Masaaki Kawasaki ,  Yoshio Miyake ,  Tomoko Sueyoshi ,  Atsuo Kobata

发明人： Masaaki Kawasaki ,  Yoshio Miyake ,  Tomoko Sueyoshi ,  Atsuo Kobata

IPC分类号： C08F2/06 ,  C08F4/659 ,  C08F6/00 ,  C08F10/00 ,  C08F210/06 ,  C08F210/16 ,  C08F210/18 ,  C08L21/00 ,  C08L23/16

CPC分类号： C08F10/00 ,  C08F6/003 ,  C08L21/00 ,  C08L23/16 ,  C08F210/06 ,  C08F210/16 ,  C08F210/18 ,  C08F4/65912 ,  C08L2207/04 ,  Y10S526/943

摘要： A process for the preparation of polyolefin which comprises polymerizing or copolymerizing olefin in the presence of a catalyst for olefin polymerization comprising (A) a metallocene compound of a transition metal selected from the Group IVB of the periodic table, and (B) an organoaluminum oxy-compound; wherein the organoaluminum oxy-compound (B) is added to the polymerization system in the form of a slurry in an aliphatic hydrocarbon or alicyclic hydrocarbon, and the polymerization is carried out in the presence of the aliphatic hydrocarbon diluent or an alicyclic hydrocarbon diluent having a boiling point below 100.degree. C. In an embodiment of the invention a polymer solution containing the resulting polyolefin obtained from the polymerization process is fed to a separation zone kept at a temperature of not lower than the upper cloud point of the polymer solution to separate the polymer solution into a lower phase portion containing the polyolefin in a high concentration and an upper phase portion, so as to recover the polyolefin from the lower phase portion in the separation zone and to recycle at least a part of the upper phase portion to the polymerization zone.

摘要翻译： 一种制备聚烯烃的方法，其包括在烯烃聚合催化剂存在下聚合或共聚烯烃，其包含（A）选自元素周期表IVB族中的过渡金属的金属茂化合物和（B）有机铝氧基 -复合; 其中将有机铝氧化合物（B）以浆料形式在脂族烃或脂环族烃中加入到聚合体系中，聚合在脂族烃稀释剂或脂环族烃稀释剂的存在下进行， 沸点低于100℃。在本发明的一个实施方案中，将从聚合方法获得的含有所得聚烯烃的聚合物溶液进料至保持在不低于聚合物溶液的上部浊点温度的分离区，以分离 聚合物溶液进入含有高浓度聚烯烃和上相部分的下相部分，以便从分离区中的下相部分回收聚烯烃并将至少一部分上相部分再循环至聚合 区。