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Rotational moulding process of ethylene polymers or copolymers having a controlled particle size and morphology
Rotational moulding process of ethylene polymers or copolymers having a controlled particle size and morphology
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机译:具有受控的粒度和形态的乙烯聚合物或共聚物的滚塑工艺
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摘要
Rotational moulding process for polymerizing or copolmerizing ethylene for manufacturing ethylene polymers or copolymers having a controlled particle size and morphology. Ethylene is polymerized or copolymerized under ethylene polymerizing conditions in the presence of a supported metallocene catalyst, where the average particle size of the catalyst particles is selected within the range of 14-40 &mgr;m and the residence time at the polymerization is selected so as to achieve a polymer where average particle size is between 0.2-0.5 mm and the proportion of fractions between 0.1-0.6 is at least 80%.
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