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US 9,447,211 B2Granted
Preparation method of catalyst for polyolefin polymerization and preparation method of polyolefin
AssigneeLG Chem, Ltd.
InventorsYong Ho Lee, Ki Soo Lee, Eun Kyoung Song, Heon Yong Kwon, Min Seok Cho, Dae Sik Hong, Man-Seong Jeon, Kyoung-Chan Lim
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Abstract
A preparation method of a catalyst for polyolefin polymerization capable of polymerizing low-density polyethylene in a single reactor without separately injecting a comonomer to thereby prepare a final product with a low cost through a more simplified process, a catalyst obtained by the preparation method, and a preparation method of a polyolefin using the catalyst are provided.
Claims9
A preparation method of a catalyst for polyolefin polymerization, the preparation method comprising:
- supporting an organic chromium compound of the following Chemical Formula 1 on a support including one or more selected from a group consisting of silicia, silica-alumina, and silica-magnesia;
- supporting a cocatalyst containing a Group 13 metal on the support on which the organic chromium compound is supported;
- and
- supporting a metallocene catalyst on the support on which the organic chromium compound and the cocatalyst are supported:
- in Chemical Formula 1,
- R1 and R2 are the same or different and are each independently a hydrocarbyl group having 2 to 20 carbon atoms, containing a heteroatom selected from a group consisting of O, N, and P,
- R3 is hydrogen or a hydrocarbyl group having 2 to 20 carbon atoms, containing a heteroatom selected from a group consisting of O, N, and P, and
- Y is a halogen, hydrogen, or a hydrocarbyl group having 1 to 4 carbon atoms.
5 more elements
Dependencies are inferred from the claim text.