Polyolefin elastomer blends exhibiting improved properties
    16.
    发明授权
    Polyolefin elastomer blends exhibiting improved properties 失效
    表现出改进性能的聚烯烃弹性体共混物

    公开(公告)号:US6005053A

    公开(公告)日:1999-12-21

    申请号:US784681

    申请日:1997-01-22

    CPC classification number: C08L23/0815 C08L2205/02 C08L91/00

    Abstract: Polymer mixtures are disclosed which comprise at least one homogeneously branched ethylene polymer (A) and at least one ethylene polymer (B) having a crystallinity which is at least 7% greater than the crystallinity of polymer (A) with certain provisos. A process for making a molded article using the disclosed polymer mixtures is disclosed as well as films, film layers, coatings and molded articles formed from those mixtures. These mixtures have several advantages over polymer compositions of the prior art, including improved properties at elevated temperatures such as improved softening point under load, improved hardness, improved toughness, improved 100% modulus of elasticity, improved compression set, improved ability to prevent oil bleed out at lower temperatures when the mixture contains oil and reduced injection molding cycle time. The mixtures retain their performance advantages even when substantial amounts of additives such as oil and filler are incorporated into the mixture. The mixtures may also be crosslinked after they are formed into the shape of an article to form vulcanized elastomeric products. The polymer mixtures have utility in a variety of applications.

    Abstract translation: 公开了包含至少一种均匀支化的乙烯聚合物(A)和至少一种乙烯聚合物(B)的聚合物混合物,其结晶度比聚合物(A)的结晶度大至少7%,具有某些条件。 公开了使用所公开的聚合物混合物制备模塑制品的方法以及由这些混合物形成的薄膜,薄膜层,涂层和模塑制品。 这些混合物具有优于现有技术的聚合物组合物的几个优点,包括在升高的温度下改进的性能,例如负载下改进的软化点,改进的硬度,改进的韧性,改进的100%弹性模量,改进的压缩永久变形,改进的防止油渗出的能力 当混合物含有油和降低注塑周期时,在较低的温度下出来。 即使将大量的添加剂如油和填料加入到混合物中,混合物也保持其性能优势。 在混合物形成制品的形状以形成硫化的弹性体产品之后,它们也可以交联。 聚合物混合物可用于各种应用。

    Non-adiabatic olefin solution polymerization
    17.
    发明授权
    Non-adiabatic olefin solution polymerization 失效
    非绝热烯烃溶液聚合

    公开(公告)号:US5977251A

    公开(公告)日:1999-11-02

    申请号:US831172

    申请日:1997-04-01

    Abstract: A solution polymerization system for polymerizing a olefin monomer by reacting the monomer with catalyst and solvent has been invented. The system in one aspect including a flow loop with a product polymer outlet, the flow loop forming a recycling reactor, a catalyst inlet on the flow loop through which catalyst and solvent flow into the flow loop, a monomer inlet on the flow loop through which monomer and solvent flow into the flow loop and, with the catalyst, form a reactant materials stream, a first heat exchanger on the flow loop for receiving the reactant materials stream and any formed polymer and for removing heat of reaction or polymerization from the flow loop, and pump apparatus for pumping the reactant materials stream and formed polymer in the flow loop and from the first heat exchanger to the product polymer outlet. In one aspect, the system includes at least one additional heat exchanger on the flow loop for receiving the reactant materials stream and formed polymer and for removing heat of reaction or polymerization from the flow loop, the pump apparatus pumping formed polymer and remaining reactant materials to the product polymer outlet, and a portion of the formed polymer and remaining reactant materials flowing out from the product polymer outlet and the remainder recycling through the flow loop. In one aspect systems and methods according to the present invention are used to make polyethylene.

    Abstract translation: 已经发明了通过使单体与催化剂和溶剂反应来使烯烃单体聚合的溶液聚合体系。 该系统在一个方面包括具有产物聚合物出口的流动回路,形成循环反应器的流动回路,流动回路上的催化剂入口,催化剂和溶剂通过该回路进入流动回路,流动回路上的单体入口, 单体和溶剂流入流动回路,并且与催化剂形成反应物料流,流动回路上用于接收反应物料流和任何形成的聚合物的第一热交换器,以及用于从流动回路除去反应或聚合的热量 以及泵装置,用于将反应物料流和形成的聚合物泵送在流动回路中并从第一热交换器泵送到产物聚合物出口。 在一个方面,该系统在流动回路上包括至少一个额外的热交换器,用于接收反应物料流和形成的聚合物,并用于从流动回路除去反应或聚合的热量,泵设备将形成的聚合物和剩余的反应物材料泵送到 产物聚合物出口,以及形成的聚合物的一部分和剩余的反应物料从产物聚合物出口流出,其余反应物质通过流动回路循环。 一方面,根据本发明的系统和方法用于制备聚乙烯。

    Olefin-based polymers and dispersion polymerizations
    20.
    发明授权
    Olefin-based polymers and dispersion polymerizations 有权
    基于烯烃的聚合物和分散体聚合

    公开(公告)号:US09388254B2

    公开(公告)日:2016-07-12

    申请号:US13991836

    申请日:2011-12-21

    Abstract: The invention provides a polymerization process comprising polymerizing a reaction mixture comprising one or more monomer types, at least one catalyst, and at least one solvent, to form a polymer dispersion, and wherein the at least one catalyst is soluble in the at least one solvent, and wherein the polymer forms a dispersed phase in the solvent, and wherein the at least one solvent is a hydrocarbon. The invention provides a composition comprising an ethylene-based polymer comprising at least the following properties: a) a weight average molecular weight (Mw(abs)) greater than, or equal to, 60,000 g/mole; and b) a molecular weight distribution (Mw(abs)/Mn(abs)) greater than, or equal to, 2.3.

    Abstract translation: 本发明提供聚合方法,其包括使包含一种或多种单体类型,至少一种催化剂和至少一种溶剂的反应混合物聚合以形成聚合物分散体,并且其中所述至少一种催化剂可溶于所述至少一种溶剂 ,并且其中所述聚合物在溶剂中形成分散相,并且其中所述至少一种溶剂是烃。 本发明提供一种包含乙烯基聚合物的组合物,其至少包括以下性质:a)大于或等于60,000g / mol的重均分子量(Mw(abs)); 和b)大于或等于2.3的分子量分布(Mw(abs)/ Mn(abs))。

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