A catalyst component (A) for olefin polymerization is prepared by contacting a solid component (a) containing magnesium, titanium, halogen and an internal electron donor compound with an organosilicon compound (b), wherein the organosilicon compound (b) is one or more selected from a SiH functional group containing chainlike polysiloxane (b1) represented by formula (I.sub.x), a cyclic polysiloxane (b2) represented by formula (I.sub.y) and a SiH functional group containing organosilicon compound (b3) represented by formula (I.sub.z). In addition, a process for preparing the catalyst component and the corresponding catalyst is described. The catalyst component and its catalyst have high catalytic activity, good hydrogen response, and good stereospecificity, the catalyst can release its activity more evenly, and the obtained polymer has significantly increased bulk density. The definitions of R.sup.1 to R.sup.10, n and z in the formulae (I.sub.x), (l.sub.y) and (I.sub.z) are as described in the specification. ##STR00001##

A catalyst component (A) for olefin polymerization is prepared by contacting a solid component (a) containing magnesium, titanium, halogen and an internal electron donor compound with an organosilicon compound (b), wherein the organosilicon compound (b) is one or more selected from a SiH functional group containing chainlike polysiloxane (b1) represented by formula (I.sub.x), a cyclic polysiloxane (b2) represented by formula (I.sub.y) and a SiH functional group containing organosilicon compound (b3) represented by formula (I.sub.z). In addition, a process for preparing the catalyst component and the corresponding catalyst is described. The catalyst component and its catalyst have high catalytic activity, good hydrogen response, and good stereospecificity, the catalyst can release its activity more evenly, and the obtained polymer has significantly increased bulk density. The definitions of R.sup.1 to R.sup.10, n and z in the formulae (I.sub.x), (l.sub.y) and (I.sub.z) are as described in the specification. ##STR00001##

A catalyst component (A) for olefin polymerization is prepared by contacting a solid component (a) containing magnesium, titanium, halogen and an internal electron donor compound with an organosilicon compound (b), wherein the organosilicon compound (b) is one or more selected from a SiH functional group containing chainlike polysiloxane (b1) represented by formula (I.sub.x), a cyclic polysiloxane (b2) represented by formula (I.sub.y) and a SiH functional group containing organosilicon compound (b3) represented by formula (I.sub.z). In addition, a process for preparing the catalyst component and the corresponding catalyst is described. The catalyst component and its catalyst have high catalytic activity, good hydrogen response, and good stereospecificity, the catalyst can release its activity more evenly, and the obtained polymer has significantly increased bulk density. The definitions of R.sup.1 to R.sup.10, n and z in the formulae (I.sub.x), (l.sub.y) and (I.sub.z) are as described in the specification. ##STR00001##

There are disclosed an apparatus and a method for selectively preparing a high reactivity polybutene, a midrange reactivity polybutene and a non-reactive polybutene in a single plant. The apparatus for selectively preparing a reactive polybutene and a non-reactive polybutene, comprises: a reactive polybutene polymerization catalyst feeder for polymerization of the reactive polybutene; a non-reactive polybutene polymerization catalyst feeder for polymerization of the non-reactive polybutene; and a reactor for polymerizing a reactant including isobutene into polybutene, wherein the reactive polybutene polymerization catalyst feeder provides a catalyst to yield the reactive polybutene; and the non-reactive polybutene polymerization catalyst feeder provides a catalyst to yield the non-reactive polybutene.

There are disclosed an apparatus and a method for selectively preparing a high reactivity polybutene, a midrange reactivity polybutene and a non-reactive polybutene in a single plant. The apparatus for selectively preparing a reactive polybutene and a non-reactive polybutene, comprises: a reactive polybutene polymerization catalyst feeder for polymerization of the reactive polybutene; a non-reactive polybutene polymerization catalyst feeder for polymerization of the non-reactive polybutene; and a reactor for polymerizing a reactant including isobutene into polybutene, wherein the reactive polybutene polymerization catalyst feeder provides a catalyst to yield the reactive polybutene; and the non-reactive polybutene polymerization catalyst feeder provides a catalyst to yield the non-reactive polybutene.

[Problem to be solved] There is provided a process for producing an olefin polymer that is capable of producing an olefin polymer having high heat resistance and high molecular weight with excellent catalytic activity. [Solution to problem] The process for producing an olefin polymer includes a step of polymerizing at least one olefin selected from ethylene and -olefins having 4 to 30 carbon atoms in the presence of an olefin polymerization catalyst containing a transition metal compound represented by the general formula [I], the olefin polymer including constituent units derived from ethylene and -olefins having 4 to 30 carbon atoms in a total amount between more than 50 mol % and not more than 100 mol %, ##STR00001## [in the formula [I], R.sup.1, R.sup.3 and R.sup.5 to R.sup.16 are each independently a hydrogen atom, a hydrocarbon group or the like; R.sup.2 is a hydrocarbon group or the like; R.sup.4 is a hydrogen atom; M is a transition metal of Group IV; Q is a halogen atom or the like; and j is an integer of 1 to 4].

[Problem to be solved] There is provided a process for producing an olefin polymer that is capable of producing an olefin polymer having high heat resistance and high molecular weight with excellent catalytic activity. [Solution to problem] The process for producing an olefin polymer includes a step of polymerizing at least one olefin selected from ethylene and -olefins having 4 to 30 carbon atoms in the presence of an olefin polymerization catalyst containing a transition metal compound represented by the general formula [I], the olefin polymer including constituent units derived from ethylene and -olefins having 4 to 30 carbon atoms in a total amount between more than 50 mol % and not more than 100 mol %, ##STR00001## [in the formula [I], R.sup.1, R.sup.3 and R.sup.5 to R.sup.16 are each independently a hydrogen atom, a hydrocarbon group or the like; R.sup.2 is a hydrocarbon group or the like; R.sup.4 is a hydrogen atom; M is a transition metal of Group IV; Q is a halogen atom or the like; and j is an integer of 1 to 4].

[Problem to be solved] There is provided a process for producing an olefin polymer that is capable of producing an olefin polymer having high heat resistance and high molecular weight with excellent catalytic activity. [Solution to problem] The process for producing an olefin polymer includes a step of polymerizing at least one olefin selected from ethylene and -olefins having 4 to 30 carbon atoms in the presence of an olefin polymerization catalyst containing a transition metal compound represented by the general formula [I], the olefin polymer including constituent units derived from ethylene and -olefins having 4 to 30 carbon atoms in a total amount between more than 50 mol % and not more than 100 mol %, ##STR00001## [in the formula [I], R.sup.1, R.sup.3 and R.sup.5 to R.sup.16 are each independently a hydrogen atom, a hydrocarbon group or the like; R.sup.2 is a hydrocarbon group or the like; R.sup.4 is a hydrogen atom; M is a transition metal of Group IV; Q is a halogen atom or the like; and j is an integer of 1 to 4].

[Problem to be solved]

There is provided a process for producing an olefin polymer that is capable of producing an olefin polymer having high heat resistance and high molecular weight with excellent catalytic activity.

[Solution to problem]

The process for producing an olefin polymer includes a step of polymerizing at least one olefin selected from ethylene and -olefins having 4 to 30 carbon atoms in the presence of an olefin polymerization catalyst containing a transition metal compound represented by the general formula [I], the olefin polymer including constituent units derived from ethylene and -olefins having 4 to 30 carbon atoms in a total amount between more than 50 mol % and not more than 100 mol %,

##STR00001##

[in the formula [I], R.sup.1, R.sup.3 and R.sup.5 to R.sup.16 are each independently a hydrogen atom, a hydrocarbon group or the like; R.sup.2 is a hydrocarbon group or the like; R.sup.4 is a hydrogen atom; M is a transition metal of Group IV; Q is a halogen atom or the like; and j is an integer of 1 to 4].

[Problem to be solved]

There is provided a process for producing an olefin polymer that is capable of producing an olefin polymer having high heat resistance and high molecular weight with excellent catalytic activity.

[Solution to problem]

The process for producing an olefin polymer includes a step of polymerizing at least one olefin selected from ethylene and -olefins having 4 to 30 carbon atoms in the presence of an olefin polymerization catalyst containing a transition metal compound represented by the general formula [I], the olefin polymer including constituent units derived from ethylene and -olefins having 4 to 30 carbon atoms in a total amount between more than 50 mol % and not more than 100 mol %,

##STR00001##

[in the formula [I], R.sup.1, R.sup.3 and R.sup.5 to R.sup.16 are each independently a hydrogen atom, a hydrocarbon group or the like; R.sup.2 is a hydrocarbon group or the like; R.sup.4 is a hydrogen atom; M is a transition metal of Group IV; Q is a halogen atom or the like; and j is an integer of 1 to 4].