The present invention is to provide an olefin polymer having excellent particle properties, the efficient solid catalyst components for the preparation, polymerization of olefins in the coexistence solid shaped catalyst component without concomitant fouling it is an object.
Olefin polymerization solid catalyst according to the present invention (K) is characterized by satisfying simultaneously the following requirements [1] and [2].
[1] The measured ignition loss in differential thermal balance is 30 wt% or less.
[2] normal temperature water vapor treatment, followed by elution components to acetonitrile after contacting the acetonitrile contains a compound having a molecular skeleton represented by the following general formula [I] can.
[Formula 1]

(In the above general formula [I], R represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms.)