Process for the production of propylene terpolymers
    2.
    发明授权
    Process for the production of propylene terpolymers 有权
    制备丙烯三元共聚物的方法

    公开(公告)号:US06365682B1

    公开(公告)日:2002-04-02

    申请号:US09446503

    申请日:2000-02-22

    IPC分类号: C08F234

    摘要: A process for producing terpolymers of propylene, comprising a) feeding into a slurry reactor a reaction mixture containing 50-85 w-% of propylene, 1-10 w-% of ethylene, 15-40 w-% of another C4-C8 alpha-olefin, a catalyst system maintaining olefin polymerization at said temperature conditions, and optionally hydrogen, b) polymerizing said reaction mixture at a temperature of lower than 70° C. a sufficient time to obtain a propylene terpolymer amounting to 50-99 w-% of the end product, c) transferring said reaction mixture into a gas phase reactor operating at a pressure of higher than 5 bars, preferably higher than 10 bars, optionally adding 0-30 w-% of ethylene, 0-10 w-% of another C4-C8 alpha-olefin, 0-40 w-% of propylene and optionally hydrogen, and d) continuing polymerization in said gas phase reactor for obtaining a propylene terpolymer amounting to 1-50 wt-% of the end product. The terpolymer has a melting temperature a less than 135° C., preferably less than 132° C., and it can be used for manufacturing films having good sealing properties.

    摘要翻译: 一种生产丙烯三元共聚物的方法,包括:a)向淤浆反应器中加入含有50-85%(重量)丙烯,1-10%乙烯,15-40%(重量)另一种C 4 -C 8α- 烯烃,在所述温度条件下保持烯烃聚合的催化剂体系,以及任选的氢气,b)在低于70℃的温度下将所述反应混合物聚合足够的时间以获得总共为50-99w-%的丙烯三元共聚物 的最终产物,c)将所述反应混合物转移到在高于5巴,优选高于10巴的压力下操作的气相反应器,任选地加入0-30重量%的乙烯,0-10重量%的乙烯, 另外的C 4 -C 8α-烯烃,0-40%(重量)的丙烯和任选的氢,和d)在所述气相反应器中连续聚合,得到总共1-50%(重量)最终产物的丙烯三元共聚物。 三元共聚物的熔融温度小于135℃,优选小于132℃,可用于制造具有良好密封性能的膜。

    Propylene terpolymers
    3.
    发明授权
    Propylene terpolymers 有权
    丙烯三元共聚物

    公开(公告)号:US06552149B2

    公开(公告)日:2003-04-22

    申请号:US10036728

    申请日:2001-12-21

    IPC分类号: C08F21006

    摘要: A process for producing terpolymers of propylene, comprising a) feeding into a slurry reactor a reaction mixture containing 50-85 w-% of propylene, 1-10 w-% of ethylene, 15-40 w-% of another C4-C8 alpha-olefin, a catalyst system maintaining olefin polymerization at said temperature conditions, and optionally hydrogen, b) polymerizing said reaction mixture at a temperature of lower than 70° C. a sufficient time to obtain a propylene terpolymer amounting to 50-99 w-% of the end product, c) transferring said reaction mixture into a gas phase reactor operating at a pressure of higher than 5 bars, preferably higher than 10 bars, optionally adding 0-30 w-% of ethylene, 0-10 w-% of another C4-C8 alpha-olefin, 0-40 w-% of propylene and optionally hydrogen, and d) continuing polymerization in said gas phase reactor for obtaining a propylene terpolymer amounting to 1-50 wt-% of the end product. The terpolymer has a melting temperature a less than 135° C., preferably less than 132° C., and it can be used for manufacturing films having good sealing properties.

    摘要翻译: 一种生产丙烯三元共聚物的方法,包括:a)向淤浆反应器中加入含有50-85%(重量)丙烯,1-10%乙烯,15-40%(重量)另一种C 4 -C 8α- 烯烃,在所述温度条件下保持烯烃聚合的催化剂体系,以及任选的氢气,b)在低于70℃的温度下将所述反应混合物聚合足够的时间以获得总共为50-99w-%的丙烯三元共聚物 的最终产物,c)将所述反应混合物转移到在高于5巴,优选高于10巴的压力下操作的气相反应器,任选地加入0-30重量%的乙烯,0-10重量%的乙烯, 另外的C 4 -C 8α-烯烃,0-40%(重量)的丙烯和任选的氢,和d)在所述气相反应器中连续聚合,得到总共1-50%(重量)最终产物的丙烯三元共聚物。 三元共聚物的熔融温度小于135℃,优选小于132℃,可用于制造具有良好密封性能的膜。