| 摘要 |
<p>An olefin polymerization catalyst comprising: (A) a solid catalyst component containing a trivalent titanium, which is represented by the composition formula MgmTi(OR)nXp[ED]q (wherein R is a hydrocarbon group having 1 to 20 carbon atoms, X is a halogen, ED is a electron donative compound, and m, n, p and q are each a number satisfying 1 </= m </= 51, 0 < n </= 5, 5 </= p </= 106 and 0.2 </= q </= 2) obtained by reducing a titanium compound represented by the general formula Ti(OR<1>)aX4-a (wherein R<1> is a hydrocarbon group having 1 to 20 carbon atoms, X is a halogen atom and a is a number satisfying 0 < a </= 4) with an organomagnesium compound in the presence of an organic silicon compound having at least one Si-O bond and an organic porous polymer, treating the resulting solid product with an ester compound and then reacting it with titanium tetrachloride or a mixture of titanium tetrachloride and an electron donative compound, and (B) an organoaluminum compound, and a process for producing an ethylene copolymer using the same.</p> |
