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    PROCESS FOR THE PREPARATION OF COPOLYMERS OF PROPYLENE
    21.
    发明申请
    PROCESS FOR THE PREPARATION OF COPOLYMERS OF PROPYLENE 审中-公开

    公开(公告)号：US20170247480A1

    公开(公告)日：2017-08-31

    申请号：US15510040

    申请日：2015-09-11

    Applicant: BOREALIS AG

    Inventor： Luigi RESCONI ,  Wilfried TÖLTSCH ,  Jingbo WANG

    IPC: C08F4/16 ,  C08F210/06 ,  B01J35/02 ,  C08F210/02

    CPC classification number: C08F4/16 ,  B01J35/026 ,  C08F2/38 ,  C08F210/02 ,  C08F210/06 ,  C08F2500/10 ,  C08F2500/17 ,  C08F4/65927 ,  C08F2500/12

    Abstract: A process for the preparation of a copolymer of propylene and ethylene comprising polymerising propylene and ethylene in the gas phase in the presence of a solid particulate catalyst free from an external carrier comprising: (i) a symmetrical complex of formula (I), wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from —R′2C—, —R′2C—CR′2—, —R′2Si—, —R′2Si—SiR′2—, —R′2Ge—, wherein each R′ is independently a hydrogen atom, C1-C20-alkyi, tri(C1-C20-aikyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; R2 is a C1-C20 hydrocarbyl radical; m is 2 to 5; R9 is a H or C1-C20 hydrocarbyl radical; R7 is a hydrogen atom or a C1-10-hydrocarbyl radical; n is 0 to 3; R1 is a C1-C20 hydrocarbyl radical and optionally two adjacent R1 groups taken together can form a further mono or multicyclic ring condensed to Ph ring optionally substituted by one or two groups R4; and R4 is a C1-C10 alkyl radical; and (ii) a cocatalyst, preferably comprising an organometallic compound of a Group 13 metal; wherein the xylene soluble fraction of the propylene ethylene copolymer has an ethylene content of at least 10 wt % and an intrinsic viscosity of at least 1.2 dl/g.

    HETEROPHASIC COPOLYMER
    23.
    发明申请
    HETEROPHASIC COPOLYMER 审中-公开
    异构共聚物

    公开(公告)号：US20160152810A1

    公开(公告)日：2016-06-02

    申请号：US14904150

    申请日：2014-07-10

    Applicant: BOREALIS AG

    Inventor： Luigi RESCONI ,  Wilfried TOLTSCH ,  Jingbo WANG ,  Markus GAHLEITNER

    IPC: C08L23/10

    CPC classification number: C08L23/10 ,  C08F4/65912 ,  C08L23/14 ,  C08L23/16 ,  C08L2207/02 ,  C08F10/00 ,  C08F4/65927 ,  C08F210/06 ,  C08F2/001 ,  C08F2500/12 ,  C08F4/6492

    Abstract: A heterophasic propylene ethylene copolymer having an MFR2 of 0.5 to 100 g/10 min and obtained using single site catalysis comprising: (i) at least 40 wt % of a propylene homopolymer or propylene ethylene copolymer matrix having up to 4 wt % comonomer; (ii) at least 10 wt % of an ethylene propylene rubber dispersed in the matrix, said heterophasic propylene ethylene copolymer having a xylene cold soluble content (XS) of 12 to 60%; wherein the ethylene content of the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer is between 18 and 70 wt. %; and wherein the intrinsic viscosity of the XS fraction of said heterophasic propylene ethylene copolymer is greater than the intrinsic viscosity of the matrix fraction of said copolymer.

    Abstract translation: 具有0.5-100g / 10min的MFR2为0.5-100g / 10min的异相丙烯乙烯共聚物，其使用单点催化得到，其包含：（i）至少40wt％的具有至多4wt％共聚单体的丙烯均聚物或丙烯乙烯共聚物基质; （ii）至少10重量％的分散在基质中的乙丙橡胶，所述多相丙烯乙烯共聚物具有12至60％的二甲苯冷可溶物含量（XS）; 其中所述多相丙烯乙烯共聚物的二甲苯冷可溶部分的乙烯含量为18至70重量％。 ％; 并且其中所述多相丙烯乙烯共聚物的XS部分的特性粘度大于所述共聚物的基体部分的特性粘度。

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