Preparation of linear crystalline homopolybenzyl
    1.
    发明授权
    Preparation of linear crystalline homopolybenzyl 失效
    线性结晶均聚苄基的制备

    公开(公告)号:US4259475A

    公开(公告)日:1981-03-31

    申请号:US25180

    申请日:1979-03-29

    IPC分类号: C08G61/00 C08G61/02

    CPC分类号: C08G61/02

    摘要: Polybenzyls of high molecular weight and high crystallinity are obtained by polymerizing aralkyl halides in the presence of a catalyst comprising a complex of a Friedel-Crafts catalyst with a complexing agent which can be a nitroarene or a nitroalkane. The complex catalyst allows the polymerization to be run at higher temperatures and with higher rates. Yields are obtained up to 100%.

    摘要翻译: 通过在包含Friedel-Crafts催化剂的络合物和可以是硝基芳烃或硝基烷烃的络合剂的催化剂的存在下聚合芳烷基卤化物,得到高分子量和高结晶度的聚苄基。 复合催化剂允许聚合在更高的温度和更高的速率下运行。 产量高达100%。

    Polymerization catalyst
    2.
    发明授权
    Polymerization catalyst 失效
    聚合催化剂

    公开(公告)号:US4707530A

    公开(公告)日:1987-11-17

    申请号:US591634

    申请日:1984-04-26

    IPC分类号: C08F4/02 C08F10/02

    摘要: Ethylene is homopolymerized or copolymerized with another olefin monomer in the presence of a catalyst system comprising organo metal cocatalyst and a titanium-containing catalyst component, said titanium-containing catalyst component being obtained by reacting together a porous particulate material, an organic magnesium compound, a halogen or interhalogen compound and titanium tetrachloride.

    摘要翻译: 在包含有机金属助催化剂和含钛催化剂组分的催化剂体系的存在下,乙烯与另一种烯烃单体均聚或共聚,所述含钛催化剂组分通过将多孔颗粒材料,有机镁化合物, 卤素或卤间化合物和四氯化钛。

    Bromobutyl rubber-styrene-acrylonitrile graft copolymers
    8.
    发明授权
    Bromobutyl rubber-styrene-acrylonitrile graft copolymers 失效
    溴丁橡胶 - 苯乙烯 - 丙烯腈接枝共聚物

    公开(公告)号:US4026968A

    公开(公告)日:1977-05-31

    申请号:US673453

    申请日:1976-04-05

    IPC分类号: C08F255/10

    CPC分类号: C08F255/10

    摘要: Novel high impact plastics are prepared by the inclusion of 2 to 30 weight percent of bromobutyl rubber in polymers of styrene and styrene-acrylonitrile and the grafting of said polymers onto said rubber. The graft copolymers are obtained by polymerizing the monomers of styrene or styrene-acrylonitrile in the presence of the bromobutyl rubber, which is preferably precrosslinked.

    摘要翻译: 通过在苯乙烯和苯乙烯 - 丙烯腈的聚合物中加入2-30重量%的溴丁基橡胶和将所述聚合物接枝到所述橡胶上来制备新型高冲击塑料。 接枝共聚物通过在溴丁基橡胶的存在下聚合苯乙烯或苯乙烯 - 丙烯腈的单体而获得,优选预交联。

    Polymerization catalyst
    10.
    发明授权
    Polymerization catalyst 失效
    聚合催化剂

    公开(公告)号:US4451574A

    公开(公告)日:1984-05-29

    申请号:US461602

    申请日:1983-01-31

    CPC分类号: C08F10/02

    摘要: Ethylene is homopolymerized or copolymerized with another olefin monomer in the presence of a catalyst system comprising organo metal cocatalyst and a titanium-containing catalyst component, such titanium-containing catalyst component being obtained by reacting together a porous particulate material, an organo magnesium compound, a halogen or interhalogen compound and titanium tetrachloride.

    摘要翻译: 在包含有机金属助催化剂和含钛催化剂组分的催化剂体系的存在下,乙烯与另一种烯烃单体均聚或共聚,这种含钛催化剂组分通过使多孔颗粒材料,有机镁化合物, 卤素或卤间化合物和四氯化钛。