发明名称 |
Tapered olefin copolymer of very low polydispersity and process for preparing the same |
摘要 |
<p>The present invention provides a tapered olefin copolymer having a narrow molecular weight distribution and a specific molecular weight, containing a segment wherein monomer composition continuously changes in the polymer chain and a process for preparing this polymer. The olefin polymers of the invention are polymers of olefins of 2 to 20 carbon atoms and have a number-average molecular weight of not less than 500 and Mw/Mn of not more than 2.5. In the process for preparing an olefin polymer, olefins of 2 to 20 carbon atoms are polymerized in the presence of an olefin polymerization catalyst comprising a transition metal compound represented by, for example, the following formula (I):
L m MX n (I)
wherein M is a transition metal atom of Group 3 to Group 11 of the periodic table, m is 1 to 5, n is a number satisfying a valence of M, L is a ligand coordinated to the central metal M and is a ligand containing a heteroatom having no direct bond to the central metal, and X is a halogen atom, a hydrocarbon group or the like.</p> |
申请公布号 |
EP2267043(A1) |
申请公布日期 |
2010.12.29 |
申请号 |
EP20100177046 |
申请日期 |
2001.01.26 |
申请人 |
MITSUI CHEMICALS, INC. |
发明人 |
MITANI, MAKOTO;YOSHIDA, YASUNORI;MOHRI, JUNICHI;TSURU, KAZUTAKA;ISHII, SEIICHI;KOJOH, SHINICHI;MATSUGI, TOMOAKI;SAITO, JUNJI;MATSUKAWA, NAOTO;MATSUI, SHIGEKAZU;NAKANO, TAKASHI;TANAKA, TAKASHI;KASHIWA, NORIO;FUJITA, TERUNORI |
分类号 |
C08F10/00;C08F4/60;C08F4/659;C08F8/00;C08F110/02;C08F210/16;C08F297/06;C08F297/08;C08L53/00 |
主分类号 |
C08F10/00 |
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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