Free-radical Curable Isobutylene-rich Polymers
    5.
    发明申请
    Free-radical Curable Isobutylene-rich Polymers 审中-公开
    自由基可固化异丁烯富聚合物

    公开(公告)号:US20110282009A1

    公开(公告)日:2011-11-17

    申请号:US13108049

    申请日:2011-05-16

    摘要: Halide displacement from brominated polyisobutylene-co-isoprene) (MIR) under homogeneous and phase-transfer catalyzed reaction conditions is used to prepare acrylate, styrenic and maleimide functionalized elastomers in high yield. These macro-monomer derivatives cross-link efficiently under peroxide initiation to give high modulus, thermoset products that cannot otherwise be accessed from isobutylene-rich elastomers. The extent of cure scales with content of activated C═C, and can extended by co-oligomerization of pendant unsaturation with that contained within multi-functional co-agents.

    摘要翻译: 在均相和相转移催化反应条件下,溴化聚异丁烯 - 共异戊二烯(MIR)的卤化物置换用于以高产率制备丙烯酸酯,苯乙烯和马来酰亚胺官能化弹性体。 这些大分子单体衍生物在过氧化物引发下有效交联,得到高模量的热固性产物,不能从富含异丁烯的弹性体获得。 固化程度随着活化的C = C含量而增加,并且可以通过侧链不饱和的共聚合与多功能助剂中所含的不饱和键的扩散。

    Free-Radical Curable Functional Macromonomers Prepared from Anhydride
    6.
    发明申请
    Free-Radical Curable Functional Macromonomers Prepared from Anhydride 审中-公开
    由酐制备的自由基可固化功能性大分子单体

    公开(公告)号:US20130066020A1

    公开(公告)日:2013-03-14

    申请号:US13698123

    申请日:2011-05-16

    摘要: A functional macromonomer, which is an isobutylene-rich polymer that homopolymerizes when initiated by a free-radical initiator, is described that has an acrylate moiety substituted by at least one substituent that bears a functional moiety. Methods of making functional macromonomers by ring-opening various anhydrides and methods of curing functional macromonomers are described. Cured products are halo-free thermosets that have only small amounts of initiator-derived byproducts and substantially no residual unreacted functionality, which is beneficial for chemical and physical stability.

    摘要翻译: 描述了一种功能性大分子单体,其是当由自由基引发剂引发时均聚的富含异丁烯的聚合物,其具有被至少一个带有功能部分的取代基取代的丙烯酸酯部分。 描述了通过开环各种酸酐制备功能性大分子单体的方法和固化功能性大分子单体的方法。 固化产物是无卤素热固性材料,其仅具有少量的引发剂衍生的副产物,并且基本上没有残留的未反应官能团,这有利于化学和物理稳定性。

    Halogenated Butyl Rubber Having Superior Reactivity
    7.
    发明申请
    Halogenated Butyl Rubber Having Superior Reactivity 审中-公开
    具有优异反应性的卤代丁基橡胶

    公开(公告)号:US20120016091A1

    公开(公告)日:2012-01-19

    申请号:US13183576

    申请日:2011-07-15

    IPC分类号: C08F8/48

    摘要: A process is described for isomerizing halogenated butyl rubber from a microstructure that is predominantly exo-methylene (secondary allylic halide) to one that is predominantly endo-halomethyl (primary allylic halide). Isomerized halobutyl rubber is a halobutyl rubber that is more reactive toward a wide range of nucleophiles, thereby supporting more efficient processes for producing a variety of butyl rubber derivatives. The process includes mixing halogenated butyl rubber and a catalytic amount of metal carboxylate and optionally heating to form isomerized halogenated butyl rubber, and may be conducted in the absence or presence of solvent.

    摘要翻译: 描述了将卤代丁基橡胶从主要是外亚甲基(二级烯丙基卤)的微结构异构化到主要为内卤代甲基(初级烯丙基卤)的方法。 异构化的卤代丁基橡胶是对广泛的亲核试剂更具反应性的卤代丁基橡胶,从而支持用于生产各种丁基橡胶衍生物的更有效的方法。 该方法包括混合卤化丁基橡胶和催化量的金属羧酸盐,并任选地加热以形成异构化的卤化丁基橡胶,并且可以在不存在或存在溶剂的情况下进行。

    Free-radical Stable Polymers that are Curable in the Presence of Co-agent
    8.
    发明申请
    Free-radical Stable Polymers that are Curable in the Presence of Co-agent 审中-公开
    自由基稳定的聚合物在助剂存在下是可以固化的

    公开(公告)号:US20110282003A1

    公开(公告)日:2011-11-17

    申请号:US13108059

    申请日:2011-05-16

    摘要: A polymer is described that is stable in the presence of a free-radical initiator, but which cures when subjected to a small amount of free-radical initiator when in the presence of a co-agent. The polymer's main chain comprises polymerized olefin monomers, isobutylene-co-isoprene, or isobutylene-co-methylstyrene. The polymer's side chains comprise a functionality that crosslinks when subjected to a free-radical initiator in the presence of a co-agent. Suitable co-agents include bis-maleimide. Methods for preparing and for crosslinking such polymers are described. Cured product is halo-free and has low odour.

    摘要翻译: 描述了在自由基引发剂的存在下是稳定的聚合物,但当在助剂存在下,当经受少量的自由基引发剂时,其固化。 聚合物的主链包括聚合的烯烃单体,异丁烯 - 共异戊二烯或异丁烯 - 共 - 甲基苯乙烯。 聚合物的侧链包含当在助剂的存在下经受自由基引发剂时交联的官能团。 合适的助剂包括双马来酰亚胺。 描述了制备和交联这种聚合物的方法。 固化产物无卤,气味低。