Solution polymerization process for preparing polyolefins
    9.
    发明授权
    Solution polymerization process for preparing polyolefins 有权
    用于制备聚烯烃的溶液聚合方法

    公开(公告)号:US08153757B2

    公开(公告)日:2012-04-10

    申请号:US12735149

    申请日:2008-12-18

    IPC分类号: C08F6/00 C08F110/02

    摘要: A solution process for polymerizing one or more α-olefins of formula CH2═CHR, where R is H or an alkyl radical C1-12, to produce a polyolefin soluble in the reaction medium, the process comprising:a) polymerizing said one or more α-olefins in a solution phase in the presence of a polymerization catalyst and a inert solvent having a vapor pressure lower than 100 kPa at 20° C.;b) separating the produced polyolefin from the unreacted monomers and the inert solvent by means of a sequence of at least three volatilization chambers operating at a decreasing pressure, the second devolatilization chamber being operated at a pressure from 0.8 to 5 bar.

    摘要翻译: 用于聚合一种或多种式CH 2 = CHR的α-烯烃(其中R是H或烷基C1-12)以产生可溶于反应介质的聚烯烃的溶液方法,所述方法包括:a)使所述一种或多种 在聚合催化剂和20℃下蒸气压低于100kPa的惰性溶剂的存在下,在溶液相中形成α-烯烃。 b)通过在减压下操作的至少三个挥发室的顺序将生产的聚烯烃与未反应的单体和惰性溶剂分离,第二脱挥发分室在0.8至5巴的压力下操作。

    Process for the preparation of 1-butene/propylene copolymers
    10.
    发明授权
    Process for the preparation of 1-butene/propylene copolymers 有权
    制备1-丁烯/丙烯共聚物的方法

    公开(公告)号:US07531609B2

    公开(公告)日:2009-05-12

    申请号:US11667350

    申请日:2005-10-20

    IPC分类号: C08F4/42

    摘要: A solution polymerization process for obtaining isotactic, crystalline or crystallizable 1-butene/propylene polymers comprising contacting under polymerization conditions at a temperature ranging from 50° C. to 90° C. 1-butene and propylene in the presence of a catalyst system obtainable by contacting: a) at least one metallocene compound; b) an alumoxane or a compound capable of forming an alkyl metallocene cation; and optionally c) an organo aluminum compound; wherein the polymerization medium consists of a mixture of 1-butene and propylene wherein the content of propylene in the liquid phase ranges from 1% to 60% by weight.

    摘要翻译: 用于获得全同立构,结晶或可结晶的1-丁烯/丙烯聚合物的溶液聚合方法,包括在聚合条件下在50℃至90℃的温度范围内接触1-丁烯和丙烯,所述催化剂体系可由 接触:a)至少一种茂金属化合物; b)铝氧烷或能够形成烷基茂金属阳离子的化合物; 和任选地c)有机铝化合物; 其中聚合介质由1-丁烯和丙烯的混合物组成,其中液相中丙烯的含量为1重量%至60重量%。