发明名称 |
ETHYLENE COPOLYMER HAVING MULTIPLE PITCH IN MOLECULAR WEIGHT DISTRIBUTION AND THE METHOD OF PREPARING THE SAME |
摘要 |
Disclosed are an ethylene polymerization process, a catalyst for use in the process, a production method employing the catalyst, and a product produced thereby. More specifically, disclosed is a process of producing an ethylene copolymer from ethylene and an alpha-olefin comonomer, in which the produced ethylene copolymer has a multimodal molecular weight distribution and excellent processability and physical properties, and thus can increase the value and productivity of products, including pipes and films. Particularly, the produced ethylene copolymer has a trimodal or higher molecular weight distribution or density distribution, and thus, when it is a linear low-density copolymer, it has an excellent effect of improving the impact strength of films, and when it is a medium-density ethylene copolymer, it can be produced into pipes, which have slow crack growth rate and can be used even at high temperature. |
申请公布号 |
WO2009031798(A3) |
申请公布日期 |
2009.05.07 |
申请号 |
WO2008KR05151 |
申请日期 |
2008.09.02 |
申请人 |
SK ENERGY CO., LTD.;SHIM, CHOON SIK;HAM, HYEONG TAEK;CHAE, SUNG SEOK;SHIN, DAE HO;KWON, SEUNG BUM;HAHN, JONG SOK;OK, MYUNG AHN |
发明人 |
SHIM, CHOON SIK;HAM, HYEONG TAEK;CHAE, SUNG SEOK;SHIN, DAE HO;KWON, SEUNG BUM;HAHN, JONG SOK;OK, MYUNG AHN |
分类号 |
C08F210/02 |
主分类号 |
C08F210/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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