Patent ID: 6677411
Filing Date: 2004-01-13
Classification: C08F,Y10S

Abstract:
A catalyst component for olefin polymerization, which comprises an ion-exchange layered silicate having the following features 1 and 2:feature 1: in a pore size distribution curve calculated from desorption isotherm by nitrogen adsorption-desorption method, a pore diameter Dm showing a maximum peak intensity DVM is from 60 to 200 Ã¥; and feature 2: in a pore size distribution curve calculated from desorption isotherm by nitrogen adsorption-desorption method, a pore diameter Dm1/2 (Ã¥) on the smaller pore size side corresponding to a Â½ peak intensity of the maximum peak intensity DVM has a relation of Dm1/2/Dm of at least 0.65 and less than 1, provided that the largest value is employed when there are a plurality of Dm1/2 values.