Terminally functionalized polymers produced using protected functional
initiators
    6.
    发明授权
    Terminally functionalized polymers produced using protected functional initiators 失效
    使用保护的官能引发剂制备终端官能化聚合物

    公开(公告)号:US5612435A

    公开(公告)日:1997-03-18

    申请号:US539467

    申请日:1995-10-05

    CPC分类号: C08F4/48 C07F7/1864 C08F36/06

    摘要: The anionic polymerization of unsaturated monomers with functionalized initiators having the structure R.sup.1 R.sup.2 R.sup.3 Si--O--A'--Li is improved by selecting A' from the structures --CH.sub.2 --CH.sub.2 --CH.sub.2 -- (1,3-propyl), --CH.sub.2 --CH(CH.sub.3)--CH.sub.2 -- (2-methyl-1,3-propyl), --CH.sub.2 --C(CH.sub.3).sub.2 --CH.sub.2 --(2,2-dimethyl-1,3-propyl), or --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --(1,8-octyl). This narrow class of polymerization initiators operate at surprisingly higher polymerization temperatures with surprisingly lower amounts of dead initiator than similar initiators wherein A' is --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --(1,4-butyl), --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --(1,5-pentyl), or --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --(1,6-hexyl).

    摘要翻译: 通过从结构-CH 2 -CH 2 -CH 2 - (1,3-丙基),-CH 2 -CH(CH 3)2中选择A'来改善不饱和单体与具有结构R1R2R3Si-O-A'-Li的官能化引发剂的阴离子聚合 )-CH 2 - (2-甲基-1,3-丙基),-CH 2 -C(CH 3)2 -CH 2 - (2,2-二甲基-1,3-丙基)或-CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 - (1,8-辛基)。 这种窄类聚合引发剂在令人惊奇的更高的聚合温度下操作,其中A'是-CH 2 -CH 2 -CH 2 - (1-丁基),-CH 2 -CH 2 -CH 2 - CH 2 -CH 2 - (1,5-戊基)或-CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 - (1,6-己基)。

    Protected functional initiators for making terminally functionalized
polymers
    8.
    发明授权
    Protected functional initiators for making terminally functionalized polymers 失效
    用于制备末端官能化聚合物的受保护的官能引发剂

    公开(公告)号:US5416168A

    公开(公告)日:1995-05-16

    申请号:US220804

    申请日:1994-03-31

    CPC分类号: C08F36/04 C07F7/1864 C08F4/48

    摘要: The anionic polymerization of unsaturated monomers with functionalized initiators having the structure R.sup.1 R.sup.2 R.sup.3 Si--O--A'--Li is improved when each R is methyl and A' is --CH.sub.2 --C.sub.6 H.sub.10 --CH.sub.2 -- or --CH.sub.2 --CR'R"--CH.sub.2 -- wherein R' is a linear alkyl having from 1 to 10 carbon atoms and R" is hydrogen or a linear alkyl having from 1 to 10 carbon atoms. This initiator provides process and product advantages over all other known initiators of the same type.

    摘要翻译: 当R 1为甲基且A'为-CH 2 -C 6 H 10 -CH 2 - 或-CH 2 -CR'R“-CH 2 - (CH 3))时,不饱和单体与具有结构R1R2R3Si-O-A'-Li结构的官能化引发剂的阴离子聚合得到改善, 其中R'是具有1至10个碳原子的直链烷基,R“是氢或具有1至10个碳原子的直链烷基。 该起始物相对于相同类型的所有其它已知的引发剂提供了方法和产物优点。

    High temperature block copolymers and process for making same
    9.
    发明授权
    High temperature block copolymers and process for making same 有权
    高温嵌段共聚物及其制备方法

    公开(公告)号:US07449518B2

    公开(公告)日:2008-11-11

    申请号:US11688448

    申请日:2007-03-20

    IPC分类号: C08L53/02 C08F297/04 C08F8/04

    摘要: A novel process for preparation of block copolymers containing, for example, alpha-methyl-styrene/styrene glassy blocks is claimed, where the glassy blocks contain 25-50 mol % alpha-methyl-styrene and have Tg values in the range of 120 to 140° C. The copolymerization process, which is conducted at 35 to 60° C. and relatively high solids contents and with continuous addition of styrene, results in very high conversions of the alpha-methyl-styrene. Selectively hydrogenated block copolymers having high glassy block Tg values are also disclosed and claimed as well as high service temperature elastomeric compositions comprising the block copolymer and an olefin polymer or copolymer.

    摘要翻译: 要求保护含有例如α-甲基 - 苯乙烯/苯乙烯玻璃质嵌段的嵌段共聚物的新方法,其中玻璃状嵌段含有25-50mol%的α-甲基 - 苯乙烯,Tg值在120〜 140℃。在35至60℃和相对较高的固体含量和连续加入苯乙烯时进行的共聚方法导致非常高的α-甲基 - 苯乙烯转化率。 还公开并要求保护具有高玻璃态Tg值的选择性氢化嵌段共聚物以及包含嵌段共聚物和烯烃聚合物或共聚物的高使用温度弹性体组合物。