Polyolefin production
    16.
    发明授权
    Polyolefin production 失效
    聚烯烃生产

    公开(公告)号:US06407273B1

    公开(公告)日:2002-06-18

    申请号:US09459836

    申请日:1999-12-13

    IPC分类号: C07F1700

    摘要: A metallocene compound having the general formula: CpAXMQ1Q2Cp′A′X′M′Q1′Q2′ wherein Cp and Cp′ are each independently a substituted or unsubstituted cyclopentadienyl moiety; M and M′ are each independently a metal chosen from Group IV B transition metals and vanadium, and coordinate to Cp and Cp′ respectively; X and X′ are each independently a substituted or unsubstituted Group VA or VIA heteroatom and coordinate to M and M′ respectively; A and A′ are bridging groups between Cp and X and between Cp′ and X′ respectively and are independently chosen from —SiR′2—O—SiR′2—, —SinR′m—, —CnR′m— and —CR′2—SiR′2—CR′2—SiR′2—, in which each R′ is independently H or hydrocarbyl having 1 to 20 carbon atoms, n is an integer in the range 1 to 4 and m=2n; each Q1, Q2 and Q1′ and Q2′ is independently a coordinating group which is hydrogen, halogen or hydrocarbyl having 1 to 20 carbon atoms and each of Q1 and Q1′ is coordinated to both M and M′.

    摘要翻译: 具有以下通式的茂金属化合物:CpAXMQ1Q2Cp'A'X'M'Q1'Q2'其中Cp和Cp'各自独立地为取代或未取代的环戊二烯基部分; M和M'各自独立地选自ⅣB族过渡金属和钒,分别与Cp和Cp'配位; X和X'各自独立地为取代或未取代的基团VA或VIA杂原子,分别与M和M'配位; A和A'分别是Cp和X之间以及Cp'和X'之间的桥连基团,独立地选自-SiR'2-O-SiR'2-,-SinR'm-,-CnR'm-和-CR '2-SiR'2-CR'2-SiR'2-,其中每个R'独立地为H或具有1至20个碳原子的烃基,n为1至4的整数,m = 2n; 每个Q1,Q2和Q1'和Q2'独立地是配位基团,其是氢,卤素或具有1至20个碳原子的烃基,并且Q1和Q1'中的每一个与M和M'配位。

    Olefin polymerisation process in the presence of an anti-fouling agent
    20.
    发明授权
    Olefin polymerisation process in the presence of an anti-fouling agent 有权
    在防污剂存在下的烯烃聚合方法

    公开(公告)号:US07282544B2

    公开(公告)日:2007-10-16

    申请号:US11503345

    申请日:2006-08-09

    IPC分类号: C08F2/04 C08F10/06

    CPC分类号: C08F110/06 C08F2/005

    摘要: A propylene polymerisation process carried out in the presence of an anti-fouling agent; characterised in that the anti-fouling agent comprises an anti-fouling polymer containing: (1) one or more blocks —(CH2—CH2—O)k— where each k is in the range from 1 to 50; and (2) one or more blocks —(CH2—CH(R)—O)n— where R comprises an alkyl group having from 1 to 6 carbon atoms and each n is in the range from 1 to 50; and terminated by a R′ and a R″ end groups wherein R′ is OH or an alkoxy having from 1 to 6 carbon atoms and R″ is H or an alkyl having from 1 to 6 carbon atoms, and the anti-fouling polymer is solvated in a solvent comprising cyclohexane when added to the polymerisation medium.

    摘要翻译: 丙烯聚合方法在防结垢剂存在下进行; 其特征在于防污剂包含防污聚合物,其含有:(1)一个或多个嵌段 - (CH 2 CH 2 -CH 2 -O) k,其中每个k在1至50的范围内; (2)一个或多个嵌段 - (CH 2 CH 2) - (R)-O)n - 其中R包括具有1至6个碳原子的烷基和 每个n在1至50的范围内; 并且被R'和R“端基封端,其中R'是OH或具有1至6个碳原子的烷氧基和R”是H或具有1至6个碳原子的烷基,并且防结垢 当加入到聚合介质中时,聚合物在包含环己烷的溶剂中溶剂化。