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    ISOPRENE COPOLYMER, AND MANUFACTURING METHOD FOR SAME
    2.
    发明公开
    ISOPRENE COPOLYMER, AND MANUFACTURING METHOD FOR SAME 有权
    异丙酚

    公开(公告)号：EP2873681A1

    公开(公告)日：2015-05-20

    申请号：EP13816418.1

    申请日：2013-07-11

    申请人： Bridgestone Corporation

    发明人： TAMAKI, Satoru ,  MATSUSHITA, Junko ,  KAITA, Shojiro

    IPC分类号： C08F297/06 ,  B60C1/00 ,  C08F4/52 ,  C08F4/606 ,  C08L53/02

    CPC分类号： C08F297/046 ,  B60C1/00 ,  B60C1/0016 ,  C08F297/06 ,  C08L53/02 ,  C08F136/08 ,  C08F4/545

    摘要： A copolymer having properties (durability (fracture resistance, abrasion resistance, and crack-growth resistance)) similar to those of natural rubber and a method of producing the copolymer are provided.
    An isoprene copolymer has a styrene block or a butadiene block at a terminal thereof, wherein styrene monomers account for less than 5 mol% of all monomers forming the isoprene copolymer having the styrene block; butadiene monomers account for 10 mol% or less of all monomers forming the isoprene copolymer having the butadiene block; and cis-1,4 bond content of a portion derived from isoprene accounts for at least 95% in total.

    摘要翻译： 提供了与天然橡胶相似的性质（耐久性（耐断裂性，耐磨性和抗裂纹生长性））的共聚物和共聚物的制造方法。 异戊二烯共聚物在其末端具有苯乙烯嵌段或丁二烯嵌段，其中苯乙烯单体占形成具有苯乙烯嵌段的异戊二烯共聚物的所有单体的少于5摩尔％ 丁二烯单体占形成具有丁二烯嵌段的异戊二烯共聚物的所有单体的10摩尔％以下; 来自异戊二烯的部分的顺式-1,4键含量占总共至少95％。

    METHOD FOR PRODUCING POLYBUTADIENE, POLYBUTADIENE, RUBBER COMPOSITION AND TIRE
    9.
    发明公开
    METHOD FOR PRODUCING POLYBUTADIENE, POLYBUTADIENE, RUBBER COMPOSITION AND TIRE 有权
    用于生产聚丁二烯，聚丁二烯，橡胶组合物轮胎

    公开(公告)号：EP2871191A1

    公开(公告)日：2015-05-13

    申请号：EP13813727.8

    申请日：2013-06-18

    申请人： Bridgestone Corporation

    发明人： TAMAKI, Satoru ,  TARDIF, Olivier

    IPC分类号： C08F4/52 ,  B60C1/00 ,  C08F36/00

    CPC分类号： C08F136/06 ,  B60C1/00 ,  C08F36/06 ,  C08F4/545

    摘要： The present invention provides a method for synthesizing a polybutadiene more efficiently and stably which is possible to obtain a rubber composition and a tire excellent in durability (fracture resistance, wear resistance and crack growth resistance). A method for producing a polybutadiene, where a butadiene monomer is polymerized with the existence of rare-earth element compounds represented by the following formula (i):

            M-(NQ) 1 NQ) 2 (NQ) 3      (i)

    (in the formula, M is at least one selected from lanthanides, scandium and yttrium; (NQ) 1 , (NQ) 2 and (NQ) 3 are amide groups which may be the same or different to each other, and have M-N bonds).

    摘要翻译： 本发明提供了用于合成聚丁二烯更有效且稳定地所有这是可能的，得到橡胶组合物和在耐久性优异的轮胎（抗断裂性，耐磨性和抗裂纹生长性）的方法。 一种用于生产聚丁二烯，其中丁二烯单体聚合用由下式（I）表示的稀土类元素的化合物的存在的方法：€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒM-（NQ ）1 NQ）2（NQ）3€ƒ€ƒ€ƒ€ƒ€ƒ（I）（式中，M是至少一种选自镧系元素，钪和钇（NQ）1，（NQ）中选择2和 （NQ）是其中三个可相同或不同海誓山盟酰胺基，和具有MN键）。

    ISOPRENE POLYMERIZATION CATALYST COMPOSITION, METHOD FOR PRODUCING SYNTHETIC POLYISOPRENE, AND SYNTHETIC POLYISOPRENE
    10.
    发明授权
    ISOPRENE POLYMERIZATION CATALYST COMPOSITION, METHOD FOR PRODUCING SYNTHETIC POLYISOPRENE, AND SYNTHETIC POLYISOPRENE 有权

    公开(公告)号：EP2957574B1

    公开(公告)日：2018-07-04

    申请号：EP14752192.6

    申请日：2014-02-14

    申请人： Bridgestone Corporation

    发明人： KAITA, Shojiro ,  TAMAKI, Satoru

    IPC分类号： C08F4/54 ,  C08F4/626 ,  C08F36/08 ,  C08F136/08

    CPC分类号： C08F136/08 ,  C08F4/52 ,  C08F4/54 ,  C08F4/626 ,  C08F36/08

    摘要： A polymerization catalyst composition that enables efficient synthesis of high molecular weight polyisoprene is provided. An isoprene polymerization catalyst composition includes: Component (a): a rare earth element compound having a rare earth element-oxygen bond or a rare earth element-sulfur bond; Component (b): an ionic compound; and Component (c): at least one compound selected from the group consisting of a compound of formula (X): YR 1 a R 2 b R 3 c and a compound having a repeating unit of formula (Y): (-Y(R 1 )O-) (where Y is a metal selected from groups 1, 2, 12 and 13 in a periodic table, R 1 and R 2 are C 1-10 hydrocarbon groups or hydrogen atoms and R 3 is a C 1-10 hydrocarbon group where R 1 , R 2 and R 3 are the same or different, and a=1, b=o and c=o in the case where Y is the metal selected from the group 1 in the periodic table, a=1, b=1 and c=o in the case where Y is the metal selected from the groups 2 and 12 in the periodic table, and a=1, b=1 and c=1 in the case where Y is the metal selected from the group 13 in the periodic table).