POLYPROPYLENE WITH LOW ASH CONTENT
    3.
    发明公开
    POLYPROPYLENE WITH LOW ASH CONTENT 审中-公开
    低灰分含量的聚丙烯

    公开(公告)号:EP3296331A1

    公开(公告)日:2018-03-21

    申请号:EP17200611.6

    申请日:2013-07-30

    申请人: Borealis AG

    摘要: The present invention relates to a process for the preparation of a polypropylene in a sequential polymerization process comprising a pre-polymerization reactor and at least two polymerization reactors connected in series, wherein
    the polymerization in the at least two polymerization reactors takes place in the presence of a Ziegler-Natta catalyst, and said Ziegler-Natta catalyst comprises
    (a) a pro-catalyst comprising
    (a1) a compound of a transition metal,
    (a2) a compound of a metal which metal is selected from one of the groups 1 to 3 of the periodic table (IUPAC),
    (a3) an internal electron donor,

    (b) a co-catalyst, and
    (c) an external donor,
    wherein said Ziegler-Natta catalyst is present in the pre-polymerization reactor and ethylene (C2) in addition to propylene (C3) is fed to said pre-polymerization reactor in a C2/C3 feed ratio of 0.5 to 10.0 g/kg.

    摘要翻译: 本发明涉及一种在顺序聚合过程中制备聚丙烯的方法,该方法包括预聚合反应器和至少两个串联连接的聚合反应器,其中在至少两个聚合反应器中的聚合在 齐格勒 - 纳塔催化剂,所述齐格勒 - 纳塔催化剂包含(a)包含(a1)过渡金属化合物,(a2)金属化合物的催化剂,所述金属选自组1至组1 (IUPAC)3,(a3)内电子给体,(b)助催化剂和(c)外给体,其中所述齐格勒 - 纳塔催化剂存在于预聚合反应器中,并且乙烯 C2)除了丙烯(C3)之外还以0.5至10.0g / kg的C2 / C3进料比供给至所述预聚合反应器。

    BOPP FILM HAVING LOW SHRINKAGE
    7.
    发明公开
    BOPP FILM HAVING LOW SHRINKAGE 审中-公开
    BOPP-FOLIE MIT GERINGER SCHRUMPFUNG

    公开(公告)号:EP3083778A1

    公开(公告)日:2016-10-26

    申请号:EP14815358.8

    申请日:2014-12-18

    申请人: Borealis AG

    摘要: The present invention relates to a new biaxially oriented polypropylene (BOPP) film, a process for the preparation of such film as well as the use of a polypropylene for the preparation of such film and an article comprising such film.

    摘要翻译: 本发明涉及新的双轴取向聚丙烯(BOPP)膜,制备这种膜的方法以及用于制备这种膜的聚丙烯以及包含该膜的制品。