利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

12 条记录 (耗时 0.049 秒)

    Olefin polymerization process
    8.
    发明申请
    Olefin polymerization process 有权
    烯烃聚合工艺

    公开(公告)号：US20060160962A1

    公开(公告)日：2006-07-20

    申请号：US10563497

    申请日：2004-06-29

    申请人： Maria Tonti ,  Markus Oberhoff ,  Volker Fraaije ,  Bernd Bachmann

    发明人： Maria Tonti ,  Markus Oberhoff ,  Volker Fraaije ,  Bernd Bachmann

    IPC分类号： C08F2/00

    CPC分类号： C08F110/06 ,  C08F4/65912 ,  C08F4/65916 ,  Y10S526/904 ,  Y10S526/905 ,  C08F4/65927 ,  C08F2/06

    摘要： A process for polymerizing one or more alpha-olefins of formula CH2═CHT wherein T is a hydrogen atom or a C1-C20 alkyl radical comprising the following steps: a) contacting in a continuous way one or more of said alpha olefins with a metallocene based catalyst system in a loop reactor, wherein: (i) the reaction is carried out in a liquid medium; (ii) the average residence time of the metallocene-based catalyst system is not more than 30 minutes; (iii) the temperature of the loop ranges from 25° to 70° C.; in to obtain a polymerization degree ranging from 60 to 500 g per gram of catalyst system; b) feeding in continuous the prepolymerized metallocene-based catalyst system obtained in step a) into a polymerization reactor C) polymerizing one or more alpha-olefins, the same or different from the alpha olefins used in step a), in the presence of said prepolymerized metallocene-based catalyst system.

    摘要翻译： 用于聚合一种或多种式CH 2 -CHT的α-烯烃的方法，其中T是氢原子或C 1 -C 20 - 烷基，其包括以下步骤：a）在环流反应器中以连续方式使一种或多种所述α-烯烃与茂金属基催化剂体系接触，其中：（i）反应在液体介质中进行; （ii）金属茂系催化剂体系的平均停留时间不超过30分钟; （iii）环路温度为25°至70°C; 以获得每克催化剂体系60至500克的聚合度; b）将在步骤a）中获得的预聚合的茂金属基催化剂体系连续进料到聚合反应器中C）使所述α-烯烃在所述 预聚金属茂系催化剂体系。

    Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and preparation of polyolefins
    9.
    发明授权
    Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and preparation of polyolefins 有权

    公开(公告)号：US07109278B2

    公开(公告)日：2006-09-19

    申请号：US10496142

    申请日：2002-11-26

    申请人： Yoshikuni Okumura ,  Markus Oberhoff ,  Jörg Schottek ,  Jörg Schulte

    发明人： Yoshikuni Okumura ,  Markus Oberhoff ,  Jörg Schottek ,  Jörg Schulte

    IPC分类号： C08F4/64 ,  C08F4/72 ,  C07F17/00 ,  B01J31/38

    CPC分类号： B01J31/143 ,  B01J31/2295 ,  B01J2531/30 ,  B01J2531/40 ,  B01J2531/48 ,  B01J2531/50 ,  B01J2531/60 ,  C07F7/081 ,  C07F17/00 ,  C08F4/65912 ,  C08F4/65916 ,  C08F10/00 ,  C08F110/06 ,  C08F210/00 ,  Y10S526/941 ,  Y10S526/943 ,  C08F4/65927 ,  C08F2500/17 ,  C08F2500/15 ,  C08F2500/03 ,  C08F210/16

    摘要： Organometallic transition metal compounds of the formula (I) where M1 is an element of group 3, 4, 5 or 6 of the Periodic Table of the Elements or the lanthanides; X are identical or different and are each halogen, hydrogen, C1–C20-alkyl, C2–C20-alkenyl, C6–C22-aryl, alkylaryl or arylalkyl having from 1 to 10 carbon atoms in the alkyl part and from 6 to 22 carbon atoms in the aryl part, —OR5 or —NR5R6, where two radicals X may also be joined to one another or two radicals X may together form a substituted or unsubstituted diene ligand, in particular a 1,3-diene ligand; where R5 and R6 are each C1–C10-alkyl, C6–C15-aryl, alkylaryl, arylalkyl, fluoroalkyl or fluoroaryl each having from 1 to 10 carbon atoms in the alkyl radical and from 6 to 22 carbon atoms in the aryl radical; n is a natural number from 1 to 4 which is equal to the oxidation number of M1 minus 2; R1 is a C2–C40 radical which is branched in the α position; R2 is hydrogen or a C1–C40 radical which may be branched or unbranched in the α position; R3, R3a and R3b are identical or different and are each hydrogen or a C1–C40 radical, where at least one of the radicals R3, R3a, R3b is not hydrogen; R4 is a substituted or unsubstituted C6–C40-aryl radical or C2–C40-heteroaromatic radical containing at least one heteroatom selected from the group consisting of O, N, S and P; T is a divalent C1–C40 group which together with the cyclopentadienyl ring forms a further saturated or unsaturated ring system having a ring size of from 5 to 12 atoms, where T may contain the heteroatoms Si, Ge, N, P, O or S withing the ring system fused onto the cyclopentadienyl ring; and Z is a bridge consisting of a divalent atom or a divalent group, can be used in catalyst systems for preparing polyolefins by polymerization or copolymerization of at least one olefin. Biscyclopentadienyl ligand systems which have such a substitution pattern and can be used for preparing these organometallic transition metal compounds are also provided

    Olefin polymerization process
    10.
    发明授权
    Olefin polymerization process 有权
    烯烃聚合工艺

    公开(公告)号：US07122606B2

    公开(公告)日：2006-10-17

    申请号：US10563497

    申请日：2004-06-29

    申请人： Maria Silvia Tonti ,  Markus Oberhoff ,  Volker Fraaije ,  Bernd Bachmann

    发明人： Maria Silvia Tonti ,  Markus Oberhoff ,  Volker Fraaije ,  Bernd Bachmann

    IPC分类号： C08F2/38

    CPC分类号： C08F110/06 ,  C08F4/65912 ,  C08F4/65916 ,  Y10S526/904 ,  Y10S526/905 ,  C08F4/65927 ,  C08F2/06

    摘要： A process for polymerizing one or more alpha-olefins of formula CH2═CHT wherein T is a hydrogen atom or a C1–C20 alkyl radical comprising the following steps: a) contacting in a continuous way one or more of said alpha olefins with a metallocene based catalyst system in a loop reactor, wherein: (i) the reaction is carried out in a liquid medium; (ii) the average residence time of the metallocene-based catalyst system is not more than 30 minutes; (iii) the temperature of the loop ranges from 25° to 70° C.; in order to obtain a polymerization degree ranging from 60 to 500 g per gram of catalyst system; b) feeding in continuous the prepolymerized metallocene-based catalyst system obtained in step a) into a polymerization reactor C) polymerizing one or more alpha-olefins, the same or different from the alpha olefins used in step a), in the presence of said prepolymerized metallocene-based catalyst system.

    摘要翻译： 用于聚合一种或多种式CH 2 -CHT的α-烯烃的方法，其中T是氢原子或C 1 -C 20 - 烷基，其包括以下步骤：a）在环流反应器中以连续方式使一种或多种所述α-烯烃与茂金属基催化剂体系接触，其中：（i）反应在液体介质中进行; （ii）金属茂系催化剂体系的平均停留时间不超过30分钟; （iii）环路温度为25°至70°C; 以获得每克催化剂体系60至500g的聚合度; b）将在步骤a）中获得的预聚合的茂金属基催化剂体系连续进料到聚合反应器中C）使所述α-烯烃在所述 预聚金属茂系催化剂体系。