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Preparation of high isotactic polybutene-1

机译:高等规聚丁烯-1的制备

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Polymerization of butene-1 (B-1) was carried out with a PP-TiCl3/Et(2)AICl/methyl methacrylate (MMA) catalyst system in n-heptane. The influence of temperature, pressure, time and H-2 on molecular weight, isotacticity, and catalytic activity were studied by viscometry, solubility in boiling diethyl ether, and measuring the polymer produced, respectively. The structural properties of the isotactic polybutene-1 (IPB-1) were characterized by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and melt flow index (MFI). The molecular weight of the products can be controlled by H-2. It was found that the catalyst showed high isotacticity and activity. (C) 2000 John Wiley & Sons, Inc. [References: 34]
机译:用PP-TiCl3 / Et(2)AlCl /甲基丙烯酸甲酯(MMA)催化剂体系在正庚烷中进行丁烯-1(B-1)的聚合。温度,压力,时间和H-2对分子量,全同立构规整度和催化活性的影响分别通过粘度测定法,在沸腾的乙醚中的溶解度并测量所产生的聚合物来研究。等规聚丁烯-1(IPB-1)的结构特性通过差示扫描量热法(DSC),热重分析(TGA),傅立叶变换红外光谱(FTIR),扫描电子显微镜(SEM)和熔体流动指数( MFI)。产物的分子量可以通过H-2控制。发现该催化剂显示出高的全同立构规整度和活性。 (C)2000 John Wiley&Sons,Inc. [参考:34]

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