Process for making a saturated dendritic hydrocarbon polymer
    1.
    发明授权
    Process for making a saturated dendritic hydrocarbon polymer 有权
    制备饱和树枝状烃聚合物的方法

    公开(公告)号:US08623980B2

    公开(公告)日:2014-01-07

    申请号:US13329559

    申请日:2011-12-19

    摘要: A process for making a substantially saturated dendritic hydrocarbon polymer. The process has the following steps: (a) polymerizing an amount of a first alkadiene monomer under anionic conditions in the presence of a first organic monolithium initiator to produce a linear polyalkadiene having a lithiated chain end; (b) reacting the linear polyalkadiene with an amount of a second organic monolithium initiator in the presence of tetramethylethylene diamine to form a multilithiated polyalkadiene; (c) reacting the multilithiated polyalkadiene with an amount of a second alkadiene monomer to form a branched polyalkadiene; (d) repeating steps (b) and (c) with the branched polyalkadiene one or more times to prepare a dendritic polyalkadiene; and (e) hydrogenating the dendritic polyalkadiene to form the substantially saturated dendritic hydrocarbon polymer.

    摘要翻译: 制备基本上饱和的树枝状烃聚合物的方法。 该方法具有以下步骤:(a)在阴离子条件下在第一有机单锂引发剂的存在下聚合一定量的第一链烯二烯单体以产生具有锂化链端的直链聚二烯二醇; (b)在四甲基乙二胺的存在下使直链多聚二烯与一定量的第二有机单锂引发剂反应,形成多元化的聚链二烯; (c)使多元化多聚二烯与一定量的第二链烯二烯单体反应以形成支链聚二烯; (d)用支链聚链二烯重复步骤(b)和(c)一次或多次以制备树枝状聚二烯; 和(e)氢化树枝状聚亚烷基二醇以形成基本饱和的树枝状烃聚合物。

    Polydispersity-controlled isoolefin polymerization with polymorphogenates
    2.
    发明授权
    Polydispersity-controlled isoolefin polymerization with polymorphogenates 有权
    多分散控制的异烯烃聚合与多形态

    公开(公告)号:US08178465B2

    公开(公告)日:2012-05-15

    申请号:US13005325

    申请日:2011-01-12

    摘要: The disclosure provides for a process and polymerization system to produce isoolefin polymers (72) utilizing polymorphogenates (16, 26) in the catalyst system to control polydispersity (MWD). The disclosure also provides a catalyst system (20) comprising a plurality of active catalyst complex species (34) formed by combination of a Lewis acid (24), an initiator (22) and a polymorphogenate (26), as well as polymers made using the catalyst system or process. The polymorphogenate (16, 26) can promote or mimic the formation of different active catalyst complex species (34) having different polymerization rates, i.e. different rates of propagation, chain transfer, or termination, as observed by different polydispersities resulting from the presence of relatively different proportions of the polymorphogenate.

    摘要翻译: 本公开提供了一种方法和聚合体系,以在催化剂体系中利用多形态(16,26)来产生异构烯烃聚合物(72)以控制多分散性(MWD)。 本公开还提供了催化剂体系(20),其包含通过路易斯酸(24),引发剂(22)和多形态(26)的组合形成的多种活性催化剂络合物(34),以及使用 催化剂体系或工艺。 聚异构体(16,26)可以促进或模拟具有不同聚合速率的不同活性催化剂复合物(34)的形成,即不同的传播速率,链转移或终止,如通过相对存在导致的不同多分散性所观察到的 不同比例的多形态。

    Method for reducing depositions in polymerization vessels
    3.
    发明授权
    Method for reducing depositions in polymerization vessels 有权
    降低聚合容器沉积的方法

    公开(公告)号:US07557170B2

    公开(公告)日:2009-07-07

    申请号:US12179375

    申请日:2008-07-24

    IPC分类号: C08F2/00 C08F10/10

    摘要: The method of polymerization includes the steps of a) providing a catalyst system, b) providing at least one monomer or comonomer mixture in a reaction vessel, c) introducing the catalyst into the reaction vessel, and d) polymerizing the at least one monomer or comonomer mixture to produce an isoolefin polymer. The catalyst may be soluble in the diluent used for polymerization. The polymerization contact surfaces of the reaction vessel have an arithmetic average surface roughness of less than 0.3 μm (12 microinches).

    摘要翻译: 聚合方法包括以下步骤:a)提供催化剂体系,b)在反应容器中提供至少一种单体或共聚单体混合物,c)将催化剂引入反应容器中,和d)聚合至少一种单体或 共聚单体混合物以产生异烯烃聚合物。 催化剂可溶于用于聚合的稀释剂中。 反应容器的聚合接触表面的算术平均表面粗糙度小于0.3μm(12微英寸)。

    Polydispersity-controlled isoolefin polymerization with polymorphogenates
    6.
    发明授权
    Polydispersity-controlled isoolefin polymerization with polymorphogenates 有权
    多分散控制的异烯烃聚合与多形态

    公开(公告)号:US07893176B2

    公开(公告)日:2011-02-22

    申请号:US11728306

    申请日:2007-03-23

    IPC分类号: C08F4/28 C08F2/14 C08F10/10

    摘要: The disclosure provides for a process and polymerization system to produce isoolefin polymers (72) utilizing polymorphogenates (16, 26) in the catalyst system to control polydispersity (MWD). The disclosure also provides a catalyst system (20) comprising a plurality of active catalyst complex species (34) formed by combination of a Lewis acid (24), an initiator (22) and a polymorphogenate (26), as well as polymers made using the catalyst system or process. The polymorphogenate (16, 26) can promote or mimic the formation of different active catalyst complex species (34) having different polymerization rates, i.e. different rates of propagation, chain transfer, or termination, as observed by different polydispersities resulting from the presence of relatively different proportions of the polymorphogenate.

    摘要翻译: 本公开提供了一种方法和聚合体系,以在催化剂体系中利用多形态(16,26)来产生异构烯烃聚合物(72)以控制多分散性(MWD)。 本公开还提供了催化剂体系(20),其包含通过路易斯酸(24),引发剂(22)和多形态(26)的组合形成的多种活性催化剂络合物(34),以及使用 催化剂体系或工艺。 聚异构体(16,26)可以促进或模拟具有不同聚合速率的不同活性催化剂复合物(34)的形成,即不同的传播速率,链转移或终止,如通过相对存在导致的不同多分散性所观察到的 不同比例的多形态。

    Method for Reducing Depositions in Polymerization Vessels
    7.
    发明申请
    Method for Reducing Depositions in Polymerization Vessels 有权
    降低聚合容器沉积的方法

    公开(公告)号:US20090062484A1

    公开(公告)日:2009-03-05

    申请号:US12179375

    申请日:2008-07-24

    IPC分类号: C08F2/01

    摘要: The method of polymerization includes the steps of a) providing a catalyst system, b) providing at least one monomer or comonomer mixture in a reaction vessel, c) introducing the catalyst into the reaction vessel, and d) polymerizing the at least one monomer or comonomer mixture to produce an isoolefin polymer. The catalyst may be soluble in the diluent used for polymerization. The polymerization contact surfaces of the reaction vessel have an arithmetic average surface roughness of less than 0.3 μm (12 microinches).

    摘要翻译: 聚合方法包括以下步骤:a)提供催化剂体系,b)在反应容器中提供至少一种单体或共聚单体混合物,c)将催化剂引入反应容器中,和d)聚合至少一种单体或 共聚单体混合物以产生异烯烃聚合物。 催化剂可溶于用于聚合的稀释剂中。 反应容器的聚合接触表面的算术平均表面粗糙度小于0.3μm(12微英寸)。

    Method for inhibiting hydrate formation
    8.
    发明授权
    Method for inhibiting hydrate formation 失效
    抑制水合物形成的方法

    公开(公告)号:US06194622B1

    公开(公告)日:2001-02-27

    申请号:US09266387

    申请日:1999-03-11

    IPC分类号: C07C720

    摘要: A method for inhibiting the formation of gas hydrates in a petroleum fluid having hydrate-forming constituents is claimed. More specifically, the method can be used to treat a petroleum fluid, such as natural gas conveyed in a pipe, to inhibit the formation of a hydrate flow restriction in the pipe. The hydrate inhibitors used for practicing the method comprise substantially water soluble homopolymers and copolymers of surfactant monomers, wherein the surfactant monomer unit may be represented by the formula: where R1 and R2 independently are hydrogen or a methyl group, M is a metal cation, n is a number sufficient to produce a number average molecular weight between 1000 and 6,000,000, and o is a number from 1 to 5.

    摘要翻译: 要求保护在具有水合物形成成分的石油液体中抑制气体水合物形成的方法。 更具体地,该方法可用于处理石油流体,例如在管道中输送的天然气,以抑制管道中的水合物流动限制的形成。 用于实施该方法的水合物抑制剂包含基本上水溶性表面活性剂单体的均聚物和共聚物,其中表面活性剂单体单元可以由下式表示:其中R1和R2独立地是氢或甲基,M是金属阳离子,n 是足以产生1000至600,000之间的数均分子量的数,o是1至5的数。

    Hydrogenation process for unsaturated homo and copolymers
    9.
    发明授权
    Hydrogenation process for unsaturated homo and copolymers 失效
    不饱和均聚物和共聚物的氢化方法

    公开(公告)号:US5399632A

    公开(公告)日:1995-03-21

    申请号:US953335

    申请日:1992-09-30

    IPC分类号: C08F8/04

    CPC分类号: C08F8/04

    摘要: It has now been discovered that the hydrogenation of unsaturated homo and copolymers can be effectively carried out in the absence of added gaseous hydrogen by contacting the unsaturated polymer with a hydrogen donor compound in the presence of a Group VIII metal catalyst, especially a supported palladium catalyst, for a time and at a temperature sufficient to bring about the hydrogenation of the unsaturated polymer.

    摘要翻译: 现在已经发现,不饱和均聚物和共聚物的氢化可以在没有添加气态氢的情况下通过在第VIII族金属催化剂,特别是负载型钯催化剂存在下使不饱和聚合物与氢供体化合物接触来有效地进行 在足以导致不饱和聚合物氢化的温度下进行。