| http://www.w3.org/ns/prov#value | - The mean particle size of the polymerization catalyst of the present invention prepared in the above manner is normally 2???200 ??m, preferably 10???150 ??m, and particularly preferably 20???100 ??m, specific surface area is normally 20???1000 m2/g and preferably 50???500 m2/g.
|
