To provide a prepolymerized catalyst which has a high catalytic activity and can give a polymer with a high bulk specific gravity even in the production of a low-mol.-wt. polymer; an olefin polymerization catalyst containing the same; and an olefin polymerization method.
A first prepolymerized catalyst is prepared by prepolymerizing an olefin in the presence of an olefin polymerization catalyst which contains a solid titanium catalyst component (Al) containing Ti, Mg, a halogen, and a compound having at least two ether bonds linked via a plurality of atoms and an organometallic compound catalyst component (B) containing a metal selected from among metals of the groups I, II, and III of the periodic table in an amount of component B of 0.1-2.0 mol per mol of Ti atom. A polymer formed by the prepolymerization has an intrinsic viscosity [η] (measured at 135°C in decalin) of at least 1.5 dl/g. A first olefin polymerization catalyst contains the first prepolymerized catalyst. An olefin polymerization method is provided wherein an olefin is (co)polymerized in the presence of the olefin polymerization catalyst.
| JPH02175707 | CATALYST FOR POLYMERIZATION OF OLEFIN |
| JPH0784498 | [Title of Invention] Method for Polymerizing Orefin |
| WO/1987/003889 | PROCESS FOR POLYMERIZATION OF ALPHA-OLEFINS |
KAWAKITA KAZUMITSU
TSUTSUI TOSHIYUKI
| JPH03294304A | 1991-12-25 | |||
| JPH0733816A | 1995-02-03 | |||
| JP2001048914A | 2001-02-20 | |||
| JPH03294319A | 1991-12-25 | |||
| JPH04218509A | 1992-08-10 | |||
| JPH0496911A | 1992-03-30 |
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