平躺
发表于 2025-3-25 05:07:02
Alumoxanes alternative to MAO: Synthesis and characterization4-trimethylpentyl). (TIOA). Alumoxanes were prepared by reacting TIOA and H.O with different molar ratios. .H NMR spectra of these products are characterized by the presence of broad bands and of resolved multiplets. Their relative amount in the region between 1.9 and 2.5 ppm was identified as the “
MUTED
发表于 2025-3-25 09:06:21
New C1-Symmetric Metallocenes for the Polymerization of Olefins) ZrCl., were compared. The zirconocene (III) is more stereorigid than (I) and (II) and, therefore, has special properties. At a polymerization temperature of 30 °C, (I) in combination with MAO exhibits the highest activity of 7500 kg PP/(mol Zrh*c.), which is about 5 times higher than
冷峻
发表于 2025-3-25 13:19:52
New Catalyst Concepts for the Polymerization of Ethylene with Metallocenesium tetrakis(pentafluorophenyl)borate (Me.PhNH·B(C.F.).)/triisobutylaluminum (i-Bu.Al) or methylaluminoxane (MAO) produced a high molecular weight polyethylene with a high activity at high temperatures. The molecular weight of the polyethylene was significantly decreased with an increase in the conc
刺激
发表于 2025-3-25 19:17:43
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消音器
发表于 2025-3-25 21:44:08
Metalorganic Catalysts for Synthesis and Polymerization978-3-642-60178-1
讽刺
发表于 2025-3-26 00:08:51
d dose assessment among residents. These reports present a wide range of findings from the research carried out in a variety of activities by large governmental organizations as well as by small private groups and individuals. The reader thus will find a large collection of valuable and interesting
巩固
发表于 2025-3-26 05:10:48
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芭蕾舞女演员
发表于 2025-3-26 10:22:21
L. L. Böhm,J. Berthold,H.-F. Enderle,M. Fleissnera in the reverse estimation method from outside the plant. The estimated release amount of .I is of the order of 120–160 PBq and that of .Cs is of the order of 8–15 PBq for both estimations. Lessons learned from the accident identified by the investigation committees cover a wide spectrum of insuffi
micronutrients
发表于 2025-3-26 14:00:19
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缺乏
发表于 2025-3-26 16:49:43
Norio Kashiwa,Shin-ichi Kojoh,Jun-ichi Imuta,Toshiyuki Tsutsuia in the reverse estimation method from outside the plant. The estimated release amount of .I is of the order of 120–160 PBq and that of .Cs is of the order of 8–15 PBq for both estimations. Lessons learned from the accident identified by the investigation committees cover a wide spectrum of insuffi