Component of catalyst for olefin polymerization
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United States of America Patent
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Jan 13, 2004
Grant Date -
Feb 6, 2003
app pub date -
May 6, 2002
filing date -
Sep 13, 2000
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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 D.sub.m showing a maximum peak intensity D.sub.VM is from 60 to 200 .ANG.; and feature 2: in a pore size distribution curve calculated from desorption isotherm by nitrogen adsorption-desorption method, a pore diameter D.sub.m1/2 (.ANG.) on the smaller pore size side corresponding to a 1/2 peak intensity of the maximum peak intensity D.sub.VM has a relation of D.sub.m1/2 /D.sub.m of at least 0.65 and less than 1, provided that the largest value is employed when there are a plurality of D.sub.m1/2 values.
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