作呕
发表于 2025-3-23 12:14:22
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ingenue
发表于 2025-3-23 17:32:13
,The Development of High Activity Catalysts in α-Olefin Polymerization,olymer science during the past twenty-five years. In the polymerization of propylene catalyst activities have improved from values of 5–10 kg/gTi to values in excess of 1,000 kg/gTi within a comparatively short period of time. This dramatic increase in catalyst activity has been made possible by a n
记忆法
发表于 2025-3-23 21:17:15
The Role of Mgcl2 on the Activity of Olefin Polymerization,a small amount of MgCl.(Mg/Ti≳2) resulted in a remarkable enhancement of the activity. Propylene polymerization was then carried out with the soluble Ti(OBu) ./AlEt.Cl catalyst combined with a variety of metal chlorides (MCl.). A clear relation was found between the activity and the electronegativit
Graves’-disease
发表于 2025-3-24 00:13:29
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同谋
发表于 2025-3-24 05:27:32
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Erythropoietin
发表于 2025-3-24 10:12:07
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forthy
发表于 2025-3-24 12:53:21
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辩论
发表于 2025-3-24 17:35:54
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meretricious
发表于 2025-3-24 21:24:30
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托运
发表于 2025-3-25 02:48:48
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