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    • 2. 发明申请
    • METHOD FOR TRANSITIONING BETWEEN INCOMPATIBLE OLEFIN POLYMERIZATION CATALYST SYSTEMS
    • 不可溶性烯烃聚合催化剂体系的转移方法
    • WO2010072367A1
    • 2010-07-01
    • PCT/EP2009/009066
    • 2009-12-17
    • BASELL POLYOLEFINE GMBHMEIER, GerhardusMIHAN, Shahram
    • MEIER, GerhardusMIHAN, Shahram
    • C08F10/00C08F2/34C08F2/42
    • C08F210/16C08F4/65912C08F4/65916C08F4/65925C08F10/00C08F2410/05C08F4/69C08F4/642C08F2/34C08F2/42C08F210/08C08F210/14C08F2500/12C08F2500/18C08F2500/07C08F4/7042C08F4/61904
    • A method for transitioning from a Ziegler-Natta to a Phillips catalyst system for the olefin polymerization reaction in one reactor, preferably a gas phase reactor, is described. The method comprises the steps of a) discontinuing a first olefin polymerization reaction performed in the presence of the Ziegler-Natta catalyst system; b) performing a second olefin polymerization reaction in the presence of a further catalyst system comprising catalyst components (A) and (B) producing, respectively, a first and a second polyolefin fraction, wherein the M w of the first polyolefin fraction is less than the M w of the second polyolefin fraction and the initial activity of catalyst component (A) exceeds the initial activity of catalyst component (B); and c) performing a third olefin polymerization reaction the presence of the Phillips catalyst system. Thanks to this method, there is no need to empty the reactor after each olefin polymerization reaction, and the transitioning time needed to attain the desired quality of the polyolefin obtained in each olefin polymerization reaction subsequent to the first one is sufficiently short to permit a quick and reliable change of production.
    • 描述了在一个反应​​器,优选气相反应器中从齐格勒 - 纳塔过渡到用于烯烃聚合反应的菲利普斯催化剂体系的方法。 该方法包括以下步骤:a)停止在齐格勒 - 纳塔催化剂体系存在下进行的第一种烯烃聚合反应; b)在另外的催化剂体系存在下进行第二烯烃聚合反应,所述催化剂体系包含分别产生第一和第二聚烯烃部分的催化剂组分(A)和(B),其中第一聚烯烃部分的Mw小于 第二聚烯烃级分的Mw和催化剂组分(A)的初始活性超过催化剂组分(B)的初始活性; 和c)进行第三烯烃聚合反应的存在的菲利浦催化剂体系。 由于这种方法,在每个烯烃聚合反应之后不需要清空反应器,并且在第一个烯烃聚合反应之后获得的每个烯烃聚合反应中获得的聚烯烃所需的质量所需的转化时间足够短,以使快速 可靠的生产变更。
    • 3. 发明申请
    • POLYETHYLENE MOLDING COMPOSITION FOR PRODUCING BLOWN FILMS HAVING IMPROVED PROCESSABILITY
    • 用于生产具有改进的可加工性的薄膜的聚乙烯模塑组合物
    • WO2006092378A1
    • 2006-09-08
    • PCT/EP2006/060223
    • 2006-02-23
    • BASELL POLYOLEFINE GMBHBERTHOLD, JoachimHEINICKE, Lutz-GerdMEIER, Gerhardus
    • BERTHOLD, JoachimHEINICKE, Lutz-GerdMEIER, Gerhardus
    • C08J5/18C08L23/04
    • C08L23/06C08J5/18C08J2323/04C08J2323/06C08J2423/08C08L23/04C08L23/08C08L23/0807C08L23/0815C08L2203/16C08L2205/025C08L2205/03C08L2666/06
    • The invention relates to a polyethylene molding composition having a multimodal molar mass distribution particularly suitable for blow molding films having a thickness in the range from 8 to 200 μm. The molding composition has a density at a temperature of 23 °C in the range from 0.953 to 0.960 g/cm3 and an MFR190/5 of the final product after extrusion in the range from 0.10 to 0.50 dg/min. The composition comprises from 30 to 60% by weight of a first ethylene polymer fraction made of a homopolymer A having a first molecular weight, from 22 to 40% by weight of a second ethylene polymer fraction made of a further homopolymer or first copolymer B of ethylene and at least one first comonomer from the group of olefins having from 4 to 8 carbon atoms, the first copolymer B having a second molecular weight higher than the first molecular weight, and from 10 to 30% by weight of a third ethylene polymer fraction made of a second copolymer C having a third molecular weight higher than the second molecular weight. The molding composition of the invention allows to produce thin films having improved processability without impairing the mechanical properties.
    • 本发明涉及具有特别适用于厚度在8至200μm范围内的吹塑薄膜的多峰摩尔质量分布的聚乙烯模塑组合物。 模塑组合物的密度在23℃的温度范围为0.953至0.960g / cm3,挤出后的最终产品的MFR 190/5为0.10至0.50dg / min。 该组合物包含30至60重量%的由具有第一分子量的均聚物A制成的第一乙烯聚合物部分,22至40重量%的由其它均聚物或第一共聚物B制成的第二乙烯聚合物部分 乙烯和来自具有4至8个碳原子的烯烃基团的至少一种第一共聚单体,第一共聚物B具有高于第一分子量的第二分子量和10至30重量%的第三乙烯聚合物部分 由具有高于第二分子量的第三分子量的第二共聚物C制成。 本发明的模塑组合物允许制造具有改进加工性能的薄膜而不损害机械性能。
    • 5. 发明申请
    • PRESSURE TRANSDUCER
    • 压力传感器
    • WO2006048278A1
    • 2006-05-11
    • PCT/EP2005/011754
    • 2005-11-03
    • BASELL POLYOLEFINE GMBHGROOS, GeorgHAMMER, KlausSCHMITT, MartinROUWEN, Stefan
    • GROOS, GeorgHAMMER, KlausSCHMITT, MartinROUWEN, Stefan
    • G01L9/04
    • G01L9/0002
    • The invention relates to a pressure transducer for chemical reactors comprising an elastically deformable essentially cylindrical deforming body having an outer surface being at least partially in direct contact with the process medium and an inner surface on which at least one sensor element so as to transmit the deformation of the deforming body to the sensor element. It is particularly advantageous that the pressure transducer can determine the pressure directly in or at the chemical reactor, whereby the measuring accuracy and the response can be increased considerably. Furthermore, the pressure transducer can be brought into various positions of the chemical reactor, so that a pressure profile within the reactor can be produced.
    • 本发明涉及一种用于化学反应器的压力传感器,其包括具有至少部分与处理介质直接接触的外表面的可弹性变形的基本上为圆柱形的变形体,以及内表面,至少一个传感器元件在其上传递变形 的变形体传递到传感器元件。 特别有利的是,压力传感器可以直接在化学反应器中或在化学反应器中确定压力,从而可以显着提高测量精度和响应。 此外,压力传感器可以进入化学反应器的各个位置,从而可以产生反应器内的压力分布。