Embodiments of the present disclosure directed towards converting a non-metallocene precatalyst into a productivity enhanced non-metallocene catalyst. As an example, the present disclosure provides a method of making an productivity enhanced non-metallocene catalyst, the method comprising combining a first non-metallocene precatalyst, an effective amount of an activator, and an effective amount of a productivity-increasing organic compound under conditions effective for the activator and the productivity-increasing organic compound to chemically convert the first non-metallocene precatalyst into the productivity enhanced non-metallocene catalyst; wherein the productivity-increasing organic compound is of formula (A), as detailed herein.

An organometallic complex, a catalyst composition employing the same, and a method for preparing polyolefin are provided. The organometallic compound has a structure represented by Formula (I)

##STR00001##

, wherein M is Ti, Zr, or Hf; X is —O—, or —NR.sup.6—; R.sup.1 and R.sup.2 are independently hydrogen, C.sub.1-6 alkyl group, C.sub.6-12 aryl group, or R.sup.1 and R.sup.2 are combined with the carbon atoms, to which they are attached, to form an C.sub.6-12 aryl moiety; R.sup.3, R.sup.4 and R.sup.5 are independently fluoride, chloride, bromide, C.sub.1-6 alkyl group, C.sub.6-12 aryl group, C.sub.3-6 hetero aryl group, C.sub.7-13 aryl alkyl group or C.sub.7-12 alkyl aryl group; and R.sup.6 is hydrogen, C.sub.6-12 aryl group or C.sub.7-12 alkyl aryl group.

An organometallic complex, a catalyst composition employing the same, and a method for preparing polyolefin are provided. The organometallic compound has a structure represented by Formula (I)

##STR00001##

, wherein M is Ti, Zr, or Hf; X is —O—, or —NR.sup.6—; R.sup.1 and R.sup.2 are independently hydrogen, C.sub.1-6 alkyl group, C.sub.6-12 aryl group, or R.sup.1 and R.sup.2 are combined with the carbon atoms, to which they are attached, to form an C.sub.6-12 aryl moiety; R.sup.3, R.sup.4 and R.sup.5 are independently fluoride, chloride, bromide, C.sub.1-6 alkyl group, C.sub.6-12 aryl group, C.sub.3-6 hetero aryl group, C.sub.7-13 aryl alkyl group or C.sub.7-12 alkyl aryl group; and R.sup.6 is hydrogen, C.sub.6-12 aryl group or C.sub.7-12 alkyl aryl group.

The various embodiments of the present invention relate to a polymerization reactor where the agitator mixing performance is optimized for use with a high activity catalyst and methods for developing the same.

The various embodiments of the present invention relate to a polymerization reactor where the agitator mixing performance is optimized for use with a high activity catalyst and methods for developing the same.

Processes are provided which include copolymerization using one or both of a metallocene catalyst capable of producing high molecular weight polymers and a metallocene catalyst capable of producing polymers having 60% or more vinyl terminations. Polymerization processes include dual catalyst polymerization in a single polymerization zone comprising both metallocene catalysts. Other processes include serial or parallel polymerizations in multiple polymerization zones, using either or both catalysts in each polymerization zone. Such polymerization processes produce reactor blends, and are particularly suited for producing copolymer compositions (such as EP or EPDM copolymer compositions) exhibiting improved melt elasticity and rheological properties.

Processes are provided which include copolymerization using one or both of a metallocene catalyst capable of producing high molecular weight polymers and a metallocene catalyst capable of producing polymers having 60% or more vinyl terminations. Polymerization processes include dual catalyst polymerization in a single polymerization zone comprising both metallocene catalysts. Other processes include serial or parallel polymerizations in multiple polymerization zones, using either or both catalysts in each polymerization zone. Such polymerization processes produce reactor blends, and are particularly suited for producing copolymer compositions (such as EP or EPDM copolymer compositions) exhibiting improved melt elasticity and rheological properties.

A production method for a cyclic olefin copolymer which is capable of efficiently producing a cyclic olefin copolymer by copolymerizing monomers including a norbornene monomer and ethylene while suppressing the formation of a polyethylene-like impurity, and a catalyst composition for the copolymerization of a norbornene monomer and ethylene. Monomers including a norbornene monomer and ethylene are polymerized in the presence of a metal-containing catalyst, and the metal-containing catalyst has a structure in which a nitrogen atom is bonded to a transition metal of Group 4 of the periodic table and an atom of Group 15 of the periodic table.

A production method for a cyclic olefin copolymer which is capable of efficiently producing a cyclic olefin copolymer by copolymerizing monomers including a norbornene monomer and ethylene while suppressing the formation of a polyethylene-like impurity, and a catalyst composition for the copolymerization of a norbornene monomer and ethylene. Monomers including a norbornene monomer and ethylene are polymerized in the presence of a metal-containing catalyst, and the metal-containing catalyst has a structure in which a nitrogen atom is bonded to a transition metal of Group 4 of the periodic table and an atom of Group 15 of the periodic table.

New C2C3 random copolymer composition, which shows improved sealing behaviour due to low sealing initiation temperature (SIT) and high hot tack force. In addition, the inventive composition shows an excellent sterilization behaviour, i.e. retention of low haze level after sterilization. The present invention is furthermore related to the manufacture of said copolymer composition and to its use.