ENHANCED CONDENSED MODE OPERATION IN METHOD OF PRODUCING POLYOFEFINS WITH CHROMIUM BASED CATALYSTS
    17.
    发明申请
    ENHANCED CONDENSED MODE OPERATION IN METHOD OF PRODUCING POLYOFEFINS WITH CHROMIUM BASED CATALYSTS 审中-公开
    用基于铬的催化剂生产聚氟乙烯的方法中的增强冷凝模式操作

    公开(公告)号:WO2011006111A1

    公开(公告)日:2011-01-13

    申请号:PCT/US2010/041587

    申请日:2010-07-09

    Abstract: A gas phase polymerization process for producing a polyethylene polymer including polymerizing ethylene and optionally at least one α-olefin comonomer in a fluidized bed reactor under condensed mode operating conditions using a Cr +6 -based supported catalyst and a catalyst initiation enhancing agent is provided. The catalyst initiation enhancing agent is an aluminum alkyl solution that is present in the fluidized bed reactor at effective Al/Cr ratios between 0.2 to 1.5. A catalyst initiation enhancing system including at least one aluminum alkyl and at least one hydrocarbon solvent wherein the aluminum alkyl is present in the solvent at concentrations of less than about 0.03 molar.

    Abstract translation: 提供了一种用于生产聚乙烯聚合物的气相聚合方法,包括在冷凝模式操作条件下使用Cr + 6基负载型催化剂和催化剂起始增强剂在流化床反应器中使乙烯和任选的至少一种α-烯烃共聚单体聚合。 催化剂起始增强剂是在有效的Al / Cr比为0.2-1.5的流化床反应器中存在的烷基铝溶液。 包含至少一种烷基铝和至少一种烃溶剂的催化剂起始增强体系,其中烷基铝以小于约0.03摩尔的浓度存在于溶剂中。

    MULTIPHASE POLYMERIC COMPOSITION USEFUL FOR PREPARING CABLE INSULATION
    18.
    发明申请
    MULTIPHASE POLYMERIC COMPOSITION USEFUL FOR PREPARING CABLE INSULATION 审中-公开
    用于制备电缆绝缘的多相聚合物组合物

    公开(公告)号:WO2010059425A1

    公开(公告)日:2010-05-27

    申请号:PCT/US2009/063250

    申请日:2009-11-04

    Abstract: Cable insulation layers having excellent mechanical and electrical properties are prepared from a composite free of plasticizer and comprising a heterogeneous, polymeric composition comprising (A) a polypropylene matrix, and (B) a propylene copolymer dispersed within the matrix and (i) comprising more than 80 weight percent (wt%) of units derived from propylene, and (ii) having a weight average particle size of less of than 1 micron (μm). The insulation layer is not only environmental friendly due to the lack of placticizer, but it also maintains its physical and operational integrity at temperatures of at least 9O°C.

    Abstract translation: 具有优异机械和电学特性的电缆绝缘层由不含增塑剂的复合材料制备,并且包含非均相的聚合物组合物,其包含(A)聚丙烯基质和(B)分散在基体内的丙烯共聚物,(i)包含多于 80重量%(wt%)衍生自丙烯的单元,和(ii)重均粒径小于1微米(μm)。 绝缘层由于缺乏稳定剂而不仅环保,而且还在至少90℃的温度下保持其物理和操作完整性。

    METHODS OF MAKING CYCLIC, N-AMINO FUNCTIONAL TRIAMINES
    19.
    发明申请
    METHODS OF MAKING CYCLIC, N-AMINO FUNCTIONAL TRIAMINES 审中-公开
    制备环状,N-氨基功能三酰胺的方法

    公开(公告)号:WO2010042159A1

    公开(公告)日:2010-04-15

    申请号:PCT/US2009/005471

    申请日:2009-10-06

    CPC classification number: C07D295/13 C07D241/04

    Abstract: The present invention provides strategies for making cyclic triamines. Reactant media including certain precursors and/or certain types of catalysts can be converted into cyclic triamines with improved conversion and selectivity. The strategies can be incorporated into reactions that involve transamination schemes and/or reductive amination schemes. In the case of transamination, for instance, using transamination to cause ring closure of higher amines in the presence of a suitable catalyst leads to desired cyclic triamines with notable conversion and yield. In the case of reductive amination, reacting suitable polyfunctional precursors in the presence of a suitable catalyst also yields cyclic triamines via ring closure with notable selectivity and conversion. Both transamination and reductive amination methodologies can be practiced under much milder temperatures than are used when solely acid catalysts are used. Preferred embodiments can produce reaction mixtures that are generally free of salt by-products.

    Abstract translation: 本发明提供了制备环状三胺的策略。 包括某些前体和/或某些类型的催化剂的反应物介质可以转化为具有改进的转化率和选择性的环状三胺。 这些策略可以纳入涉及转录方案和/或还原胺化方案的反应中。 例如,在转氨基的情况下,使用转氨作用在合适的催化剂存在下使高级胺闭环会导致所需的环状三胺具有显着的转化率和收率。 在还原胺化的情况下,合适的多官能前体在合适的催化剂存在下反应也可以通过闭环产生环状三胺,并具有显着的选择性和转化率。 氨基转移和还原胺化方法都可以在比单独使用酸催化剂时更温和的温度下进行。 优选实施方案可以产生通常不含盐副产物的反应混合物。

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