Process for making thermoplastic polymer pellets
    1.
    发明授权
    Process for making thermoplastic polymer pellets 有权
    制备热塑性聚合物颗粒的方法

    公开(公告)号:US08709315B2

    公开(公告)日:2014-04-29

    申请号:US12583318

    申请日:2009-08-18

    摘要: Provided is a process for making thermoplastic polymer pellets. The process has the following steps: (a) melting a thermoplastic polymer to form a polymer melt; (b) extruding the melt through a die to form a substantially continuous molten polymer extrudate wherein the die has a contact surface bearing a polymer coating having a surface energy of less than 25 mN/m at 20° C.; (c) cooling the extrudate to form a cooled extrudate; and (d) pelletizing the cooled extrudate to form a plurality of polymer pellets. Provided is also a polymer pellet shipping system and a stable thermoplastic polymer pellet.

    摘要翻译: 提供制备热塑性聚合物颗粒的方法。 该方法具有以下步骤:(a)熔化热塑性聚合物以形成聚合物熔体; (b)通过模具挤出熔体以形成基本上连续的熔融聚合物挤出物,其中模具具有在20℃下承载表面能小于25mN / m的聚合物涂层的接触表面; (c)冷却挤出物以形成冷却的挤出物; 和(d)将冷却的挤出物造粒以形成多个聚合物颗粒。 还提供聚合物颗粒运输系统和稳定的热塑性聚合物颗粒。

    Fiber-reinforced polypropylene/elastomer composite
    2.
    发明授权
    Fiber-reinforced polypropylene/elastomer composite 有权
    纤维增强聚丙烯/弹性体复合材料

    公开(公告)号:US08618214B2

    公开(公告)日:2013-12-31

    申请号:US12971454

    申请日:2010-12-17

    IPC分类号: C08L53/02 C08J5/06 C08L23/26

    摘要: Provided is a fiber-reinforced composite. The composite has a propylene polymer including 90 wt % or more of propylene monomeric units based on the weight of the propylene polymer; a plurality of fibers of a solid, flexible material grafted to the propylene polymer; and an elastomer. The fibers are present in the composite at 10 wt % to 80 wt % based on the total weight of the composite. The propylene polymer is present in the composite at from 30 wt % to 95 wt % based on the total weight of the composite. The elastomer is present in the composite at from 5 wt % to 50 wt % based on the total weight of the composite. Greater than 50 wt % of the fibers are dispersed within the propylene polymer based on the total weight of the fibers in the composite. There is also provided a process for making a fiber-reinforced composite.

    摘要翻译: 提供纤维增强复合材料。 复合材料具有基于丙烯聚合物重量的包含90重量%或更多丙烯单体单元的丙烯聚合物; 接枝到丙烯聚合物上的固体柔性材料的多根纤维; 和弹性体。 基于复合材料的总重量,纤维以10重量%至80重量%存在于复合材料中。 基于复合材料的总重量,丙烯聚合物以30重量%至95重量%的量存在于复合材料中。 基于复合材料的总重量,弹性体以5重量%至50重量%的量存在于复合材料中。 基于复合材料中纤维的总重量,大于50重量%的纤维分散在丙烯聚合物内。 还提供了一种制备纤维增强复合材料的方法。

    PROCESS FOR MAKING A SATURATED DENDRITIC HYDROCARBON POLYMER
    4.
    发明申请
    PROCESS FOR MAKING A SATURATED DENDRITIC HYDROCARBON POLYMER 有权
    制备饱和的聚碳酸酯聚合物的方法

    公开(公告)号:US20120157633A1

    公开(公告)日:2012-06-21

    申请号:US13329559

    申请日:2011-12-19

    IPC分类号: C08F8/32 C08F255/00

    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。

    Low permeability thermoplastic elastomer composition
    5.
    发明授权
    Low permeability thermoplastic elastomer composition 有权
    低渗透性热塑性弹性体组合物

    公开(公告)号:US08021730B2

    公开(公告)日:2011-09-20

    申请号:US12091535

    申请日:2005-10-27

    摘要: A thermoplastic elastomer composition possessing superior air impermeability, excellent durability and flexibility. In particular, the composition includes (A) at least one halogenated isobutylene-containing elastomer; and (B) at least one nylon resin having a melting point of about 170° C. to about 260° C.; and (C) a low molecular weight polymeric nylon plasticizer; wherein: (1) the at least one elastomer is present as a dispersed phase of small vulcanized particles in a continuous nylon phase; and (2) the elastomer particles are formed by dynamic vulcanization. Use of a low molecular weight nylon plasticizer provides for improved mixing and rubber dispersion while retaining the high levels of impermeability achievable by the use of nylon resin and halogenated isobutylene-containing elastomer in a dynamically vulcanized composition. Such compositions are particularly useful in applications such as tire innerliners and barrier films or layers as well as hoses.

    摘要翻译: 具有优异的防空气性,优异的耐久性和柔软性的热塑性弹性体组合物。 特别地,组合物包括(A)至少一种含卤代异丁烯的弹性体; 和(B)至少一种熔点为约170℃至约260℃的尼龙树脂; 和(C)低分子量聚合尼龙增塑剂; 其中:(1)所述至少一种弹性体作为连续尼龙相中的小硫化颗粒的分散相存在; 和(2)弹性体颗粒通过动态硫化形成。 使用低分子量尼龙增塑剂可提供改进的混合和橡胶分散体,同时保持在动态硫化组合物中使用尼龙树脂和含卤代异丁烯的弹性体可实现的高水平的不渗透性。 这样的组合物在诸如轮胎内衬和阻隔膜或层以及软管的应用中特别有用。

    ANTI-WEAR PERFORMANCE OF LUBRICANTS USING CARBON NANOPLATELETS
    8.
    发明申请
    ANTI-WEAR PERFORMANCE OF LUBRICANTS USING CARBON NANOPLATELETS 审中-公开
    使用碳纳米管的润滑剂的耐磨性能

    公开(公告)号:US20140038862A1

    公开(公告)日:2014-02-06

    申请号:US13947606

    申请日:2013-07-22

    IPC分类号: C10M141/10 C10M125/02

    摘要: Provided are a lubricating engine oil and a method of improving wear protection in an engine lubricated with such lubricating oil. The method includes using as the lubricating oil a formulated oil comprising a lubricating oil base stock as a major component, an antiwear additive as a first minor component, and carbon nanoplatelets as a second minor component. The carbon nanoplatelets are dispersed in said lubricating oil base stock. Wear protection is improved as compared to wear protection achieved using a lubricating oil not containing carbon nanoplatelets as a second minor component. A synergy exists between carbon nanoplatelets and other major components of lubricants, especially with zinc dialkyldithiophosphate (ZDDP) or other phosphate antiwear additives, that helps to form a nano-composite wear resistant and low friction tribofilm both on ferrous and non-ferrous surfaces (e.g., carbon coatings, ceramic coatings, polymeric coatings, and the like) of engines/machines.

    摘要翻译: 提供一种润滑发动机油以及在用这种润滑油润滑的发动机中改善磨损保护的方法。 该方法包括使用包含润滑油基础油作为主要成分的配制油,作为第一次要成分的抗磨添加剂和作为第二次要成分的碳纳米片的润滑油。 碳纳米片分散在所述润滑油基础油中。 与使用不含碳纳米片作为第二次要成分的润滑油所实现的磨损保护相比,耐磨性得到改善。 碳纳米片与润滑剂的其他主要成分(特别是二烷基二硫代磷酸锌(ZDDP)或其他磷酸酯抗磨添加剂)之间存在协同作用,有助于在黑色和有色金属表面形成纳米复合材料耐磨和低摩擦摩擦膜(例如 ,碳涂层,陶瓷涂层,聚合物涂层等)的发动机/机器。

    BRANCHED SATURATED HYDROCARBON POLYMERS AS EXTENSIONAL RHEOLOGY MODIFIERS WITHOUT IMPACTING SHEAR PROPERTIES
    9.
    发明申请
    BRANCHED SATURATED HYDROCARBON POLYMERS AS EXTENSIONAL RHEOLOGY MODIFIERS WITHOUT IMPACTING SHEAR PROPERTIES 有权
    分散式饱和烃聚合物作为不影响剪切性能的扩展流变学改性剂

    公开(公告)号:US20130261264A1

    公开(公告)日:2013-10-03

    申请号:US13855181

    申请日:2013-04-02

    IPC分类号: C08F110/02 C08L23/06

    摘要: Provided are blends of branched hydrocarbon comb polymers having tailored branching and molecular weight parameters, with substantially linear polymers. Such blends have been found to have improved extensional rheological properties, while maintaining nearly the viscosity of the substantially linear polymers. The blends of the hydrocarbon comb polymers with the substantially linear polymers thus maintain the extrusion processing characteristics of the linear polymer alone, but have improved extensional flow processability, with strain hardening ratios (SHR) greater than 1. The blends are effective in blown film processing. Also disclosed are related methods for improving extensional flow processability using the branched hydrocarbon comb polymers, as well as the branched hydrocarbon comb polymers themselves, including as a property enhancing additive for such substantially linear polymers.

    摘要翻译: 提供具有定制的支化和分子量参数的支链烃梳聚合物的混合物,具有基本上线性的聚合物。 已发现这种共混物具有改进的拉伸流变性能,同时保持基本上线性聚合物的粘度。 烃梳聚合物与基本上线性的聚合物的共混物因此保持单独的线性聚合物的挤出加工特性,但具有改进的拉伸流动加工性能,应变硬化率(SHR)大于1.该共混物在吹塑薄膜加工中是有效的 。 还公开了使用支链烃梳聚合物以及支链烃梳聚合物本身提高拉伸流加工性的相关方法,包括作为这种基本上线性的聚合物的性能增强添加剂。

    Synthesis of dendritic polyolefins by metathesis insertion polymerization
    10.
    发明授权
    Synthesis of dendritic polyolefins by metathesis insertion polymerization 有权
    通过复分解插入聚合合成树枝状聚烯烃

    公开(公告)号:US08487059B2

    公开(公告)日:2013-07-16

    申请号:US13302446

    申请日:2011-11-22

    IPC分类号: C08G61/12 C08F8/04 C08F4/80

    摘要: A one step process for making a dendritic hydrocarbon polymer, e.g., dendritic polyolefin, by metathesis insertion polymerization. The process comprises polymerizing an amount of one or more cyclic olefins and one or more multi-functional (meth)acrylates in the presence of a metathesis catalyst and under conditions sufficient to produce the dendritic hydrocarbon polymer. The one or more multi-functional (meth)acrylates have a functionality of 3 or higher. The dendritic hydrocarbon polymer can be hydrogenated to produce a substantially saturated dendritic hydrocarbon polymer. The hydrogenation can take place in the same reaction vessel as the polymerization, i.e., one pot process.

    摘要翻译: 通过复分解插入聚合制备树枝状聚合物例如树枝状聚烯烃的一步法。 该方法包括在复分解催化剂存在下和在足以产生树枝状烃聚合物的条件下聚合一定量的一种或多种环烯烃和一种或多种多官能(甲基)丙烯酸酯。 一种或多种多官能(甲基)丙烯酸酯具有3或更高的官能度。 树枝状烃聚合物可以被氢化以产生基本饱和的树枝状烃聚合物。 氢化可以在与聚合相同的反应容器中进行,即一锅法。