Metallic complexes having indenyl ligands can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers that include both olefins and polyenes. Embodiments of the catalyst system can provide interpolymers that include polyene mer and from 40 to 75 mole percent ethylene mer, with a plurality of the ethylene mer being randomly distributed. The catalyst system also can be used in solution polymerizations conducted in C.sub.5-C.sub.12 alkanes, yielding interpolymers that include at least 10 mole percent ethylene mer.

The present invention provides an olefin resin () satisfying the following requirements (I) to (VI), and a propylene resin composition including the same. (I) () includes a grafted olefin polymer [R1] containing a main chain composed of an ethylene/-olefin copolymer and a side chain composed of a propylene polymer. (II) The ratio P wt % of the amount of the propylene polymer contained in () is from 5 to 60 wt %. (III) When the ratio of the amount of a component(s) having a peak temperature of a differential elution curve as measured by cross-fractionation chromatography (CFC) using o-dichlorobenzene as a solvent of less than 65 C., to the amount of () is taken as E wt %, the value a represented by the following equation (Eq-1), in relation to the ratio E and the ratio P, is 1.4 or more. (IV) The melting point (Tm) and the glass transition temperature (Tg), as measured by differential scanning calorimetry (DSC), are from 120 to 165 C. and from 80 to 30 C., respectively. (V) The hot xylene-insoluble content is less than 3 wt %. (VI) The limiting viscosity [] as measured in decalin at 135 C. is from 0.5 to 5.0 dl/g.

a=(100E)/P(Eq-1)

The present invention provides an olefin resin () satisfying the following requirements (I) to (VI), and a propylene resin composition including the same. (I) () includes a grafted olefin polymer [R1] containing a main chain composed of an ethylene/-olefin copolymer and a side chain composed of a propylene polymer. (II) The ratio P wt % of the amount of the propylene polymer contained in () is from 5 to 60 wt %. (III) When the ratio of the amount of a component(s) having a peak temperature of a differential elution curve as measured by cross-fractionation chromatography (CFC) using o-dichlorobenzene as a solvent of less than 65 C., to the amount of () is taken as E wt %, the value a represented by the following equation (Eq-1), in relation to the ratio E and the ratio P, is 1.4 or more. (IV) The melting point (Tm) and the glass transition temperature (Tg), as measured by differential scanning calorimetry (DSC), are from 120 to 165 C. and from 80 to 30 C., respectively. (V) The hot xylene-insoluble content is less than 3 wt %. (VI) The limiting viscosity [] as measured in decalin at 135 C. is from 0.5 to 5.0 dl/g.

a=(100E)/P(Eq-1)

An ethylene copolymer, a Group 4 transition metal catalyst compound, and methods for polymerization using such a compound, said compound represented by the formula: (L).sub.p(R).sub.zT(Cp)(A)MX.sub.2, where M is a Group 4 metal; z is 0 to 8; p is 1 to 3; X is an anionic leaving group; T is a bridging group; R.sup.1 to R.sup.4 are hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group, aryl group, substituted aryl group, or a heteroatom-containing group (where adjacent R groups can form rings); R is hydrogen, a C.sub.1 to C.sub.10 alkyl group, a C.sub.6 to C.sub.24 aryl group, or a C.sub.7 to C.sub.40 alkylaryl group; and L is a heteroatom or heteroatom-containing group bound to T, Cp is a cyclopentadienyl ring substituted with 0 to 4 substituent groups (where adjacent groups can form C.sub.4 to C.sub.20 rings); A is Cp or (JS.sub.z*-1-y), where J is a Group 15 or 16 element; S is a hydrocarbyl, substituted hydrocarbyl, or heteroatom; z* is 2 or 3, and y is 0 or 1, is provided.

An ethylene copolymer, a Group 4 transition metal catalyst compound, and methods for polymerization using such a compound, said compound represented by the formula: (L).sub.p(R).sub.zT(Cp)(A)MX.sub.2, where M is a Group 4 metal; z is 0 to 8; p is 1 to 3; X is an anionic leaving group; T is a bridging group; R.sup.1 to R.sup.4 are hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group, aryl group, substituted aryl group, or a heteroatom-containing group (where adjacent R groups can form rings); R is hydrogen, a C.sub.1 to C.sub.10 alkyl group, a C.sub.6 to C.sub.24 aryl group, or a C.sub.7 to C.sub.40 alkylaryl group; and L is a heteroatom or heteroatom-containing group bound to T, Cp is a cyclopentadienyl ring substituted with 0 to 4 substituent groups (where adjacent groups can form C.sub.4 to C.sub.20 rings); A is Cp or (JS.sub.z*-1-y), where J is a Group 15 or 16 element; S is a hydrocarbyl, substituted hydrocarbyl, or heteroatom; z* is 2 or 3, and y is 0 or 1, is provided.

Provided are a propylene-based polymer useful for providing a toner that is excellent in offset resistance, can be fixed by using a low-temperature heating element and hardly has stickiness even after stored for a long period of time; and a toner including said propylene-based polymer. The present invention is directed to a propylene/-olefin copolymer (A) which includes 60 to 90 mol % of structural units derived from propylene (a) and 10 to 40 mol % of structural units derived from -olefins having 4 or more carbon atom (b) wherein (a)+(b)=100 mol % and which satisfies: (i) a weight average molecular weight (Mw) as measured by GPC of 3,000 to 40,000; (ii) a melting point (Tm) as measured by DSC of 60 to 90 C.; and (iii) a half width of a crystalline melting point peak as measured by DSC of 1 to 20 C.

Provided are a propylene-based polymer useful for providing a toner that is excellent in offset resistance, can be fixed by using a low-temperature heating element and hardly has stickiness even after stored for a long period of time; and a toner including said propylene-based polymer. The present invention is directed to a propylene/-olefin copolymer (A) which includes 60 to 90 mol % of structural units derived from propylene (a) and 10 to 40 mol % of structural units derived from -olefins having 4 or more carbon atom (b) wherein (a)+(b)=100 mol % and which satisfies: (i) a weight average molecular weight (Mw) as measured by GPC of 3,000 to 40,000; (ii) a melting point (Tm) as measured by DSC of 60 to 90 C.; and (iii) a half width of a crystalline melting point peak as measured by DSC of 1 to 20 C.

A method for producing an olefin block polymer, the method including: polymerizing olefins using a polymerization catalyst (X) and an organometallic compound (C) containing an atom of any of Groups 2, 12, and 13 of the periodic table of the elements, the organometallic compound (C) excluding an activating co-catalyst agent (B), wherein the polymerization catalyst (X) is formed by bringing a transition metal compound (A) into contact with the activating co-catalyst agent (B), the transition metal compound (A) is represented by the following general formula (1), and the activating co-catalyst agent (B) is selected from among an organoaluminumoxy compound (B-1), an organoboron compound (B-2), a zinc co-catalyst component (B-3), and ion-exchange layered silicate (B-4). ##STR00001##

A method for producing an olefin block polymer, the method including: polymerizing olefins using a polymerization catalyst (X) and an organometallic compound (C) containing an atom of any of Groups 2, 12, and 13 of the periodic table of the elements, the organometallic compound (C) excluding an activating co-catalyst agent (B), wherein the polymerization catalyst (X) is formed by bringing a transition metal compound (A) into contact with the activating co-catalyst agent (B), the transition metal compound (A) is represented by the following general formula (1), and the activating co-catalyst agent (B) is selected from among an organoaluminumoxy compound (B-1), an organoboron compound (B-2), a zinc co-catalyst component (B-3), and ion-exchange layered silicate (B-4). ##STR00001##

The present disclosure relates to a propylene-1-hexene copolymer having: i) a content of 1-hexene derived units ranging from 0.6 wt % to 3.0 wt %; ii) a melt flow rate (MFR) measured according to the method ISO 1133 (230 C., 5 kg) ranging from 0.5 g/10 min to 5.0 g/10 min; iii) a polydispersity (PI) ranges from 4.5 to 10 and the distribution of molecular weight is of multimodal type; iv) a melting point ranging from 160 C. to 145 C.; and v) a differential scanning calorimetry (DSC) curve (temperature/heat of fusion) that shows at least two peaks.