A metal complex of the formula (1) CyLMZ.sub.p(A).sub.n (1), wherein M is a group 4 metal Z is an anionic ligand, p is number of 1 to 2, preferably 2, Cy is a cyclopentadienyl-type ligand substituted with at least one aliphatic C.sub.3-C.sub.20 hydrocarbyl group, which is bonded to the cyclopentadienyl-type ligand, in particular to its cyclopentadienyl ring, via a secondary, a tertiary or quaternary carbon atom and, L is an amidinate ligand of the formula (2), wherein the amidine-containing ligand is covalently bonded to the metal M via the imine nitrogen atom, and Sub1 is a substituent comprising a group 14 atom through which Sub1 is bonded to the imine carbon atom and Sub2 is a substituent comprising a heteroatom of group 15, through which Sub2 is bonded to the imine carbon atom and A is a neutral Lewis base ligand selected from the list consisting of ether, thioether, amine, tertiary phosphane, imine, nitrile and isonitrile, wherein the number of said metal ligands “n” is in the range of 0 to the amount that specifies the 18-electron rule.

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A metal complex of the formula (1) CyLMZ.sub.p(A).sub.n (1), wherein M is a group 4 metal Z is an anionic ligand, p is number of 1 to 2, preferably 2, Cy is a cyclopentadienyl-type ligand substituted with at least one aliphatic C.sub.3-C.sub.20 hydrocarbyl group, which is bonded to the cyclopentadienyl-type ligand, in particular to its cyclopentadienyl ring, via a secondary, a tertiary or quaternary carbon atom and, L is an amidinate ligand of the formula (2), wherein the amidine-containing ligand is covalently bonded to the metal M via the imine nitrogen atom, and Sub1 is a substituent comprising a group 14 atom through which Sub1 is bonded to the imine carbon atom and Sub2 is a substituent comprising a heteroatom of group 15, through which Sub2 is bonded to the imine carbon atom and A is a neutral Lewis base ligand selected from the list consisting of ether, thioether, amine, tertiary phosphane, imine, nitrile and isonitrile, wherein the number of said metal ligands “n” is in the range of 0 to the amount that specifies the 18-electron rule.

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The present invention relates to a crosslinked polymer composition comprising a crosslinked polyolefin, wherein the polymer composition comprises, prior to crosslinking, a polyolefin and peroxide which is in an amount of less than 35 mmol —O—O-/kg polymer composition, characterized in that the crosslinked polymer composition has been in a direct contact with a semiconductive composition for 24 h at 70° C., and that the crosslinked polymer composition thereafter has an electrical DC-conductivity of 150 fS/m or less, wherein the electrical DC-conductivity is measured in accordance with “DC conductivity method”, as described under “Determination methods”, on a plaque of the crosslinked polymer composition at 70° C. and 30 kV/mm mean electric field from a non-degassed and 1 mm thick plaque sample of the crosslinked polymer composition; a layered structure, cable, e.g. a power cable, use of the crosslinked polymer composition and the structured layer, both, for producing a crosslinked power cable, e.g., a cross linked direct current (DC) power cable; and a process for producing a cable.

The present invention relates to a crosslinked polymer composition comprising a crosslinked polyolefin, wherein the polymer composition comprises, prior to crosslinking, a polyolefin and peroxide which is in an amount of less than 35 mmol —O—O-/kg polymer composition, characterized in that the crosslinked polymer composition has been in a direct contact with a semiconductive composition for 24 h at 70° C., and that the crosslinked polymer composition thereafter has an electrical DC-conductivity of 150 fS/m or less, wherein the electrical DC-conductivity is measured in accordance with “DC conductivity method”, as described under “Determination methods”, on a plaque of the crosslinked polymer composition at 70° C. and 30 kV/mm mean electric field from a non-degassed and 1 mm thick plaque sample of the crosslinked polymer composition; a layered structure, cable, e.g. a power cable, use of the crosslinked polymer composition and the structured layer, both, for producing a crosslinked power cable, e.g., a cross linked direct current (DC) power cable; and a process for producing a cable.

The present invention relates to a crosslinked polymer composition comprising a crosslinked polyolefin, wherein the polymer composition comprises, prior to crosslinking, a polyolefin and peroxide which is in an amount of less than 35 mmol —O—O-/kg polymer composition, characterized in that the crosslinked polymer composition has been in a direct contact with a semiconductive composition for 24 h at 70° C., and that the crosslinked polymer composition thereafter has an electrical DC-conductivity of 150 fS/m or less, wherein the electrical DC-conductivity is measured in accordance with “DC conductivity method”, as described under “Determination methods”, on a plaque of the crosslinked polymer composition at 70° C. and 30 kV/mm mean electric field from a non-degassed and 1 mm thick plaque sample of the crosslinked polymer composition; a layered structure, cable, e.g. a power cable, use of the crosslinked polymer composition and the structured layer, both, for producing a crosslinked power cable, e.g., a cross linked direct current (DC) power cable; and a process for producing a cable.

A propylene-ethylene-diene terpolymer and method of making such comprising from 2% to 25% wt % by weight of ethylene, from 98% to 75% wt % by weight propylene and from 1% to 21% wt % by weight of a diene, wherein the terpolymer has a crystallinity of less than 3%, a melt flow rate (MFR) of less than 10 and a Tg by DSC of from −2° C. to −25° C. and methods to prepare the terpolymer are depicted.

A propylene-ethylene-diene terpolymer and method of making such comprising from 2% to 25% wt % by weight of ethylene, from 98% to 75% wt % by weight propylene and from 1% to 21% wt % by weight of a diene, wherein the terpolymer has a crystallinity of less than 3%, a melt flow rate (MFR) of less than 10 and a Tg by DSC of from −2° C. to −25° C. and methods to prepare the terpolymer are depicted.

A propylene-ethylene-diene terpolymer and method of making such comprising from 2% to 25% wt % by weight of ethylene, from 98% to 75% wt % by weight propylene and from 1% to 21% wt % by weight of a diene, wherein the terpolymer has a crystallinity of less than 3%, a melt flow rate (MFR) of less than 10 and a Tg by DSC of from −2° C. to −25° C. and methods to prepare the terpolymer are depicted.

The present disclosure relates to a thermoplastic vulcanizate including a polypropylene and a copolymer. The copolymer may have an ethylene content, a propylene content, and an a, α,ω-diene content. The thermoplastic vulcanizate has a shore hardness of about 20 Shore A or greater. Alternatively, a thermoplastic vulcanizate may include a polypropylene and an elastomeric polymer and have a shore hardness of about 50 MPa or greater, a tensile strength at yield of about 18 MPa or greater, and an oil swell of about 15% weight gain or less. Additionally, the present disclosure relates to processes for producing thermoplastic vulcanizates. A process may include introducing a catalyst and propylene to a first reactor to form a first polymer, and introducing the first polymer, ethylene, at least one α,ω-diene, and optionally additional propylene to a second reactor to form an impact copolymer. The process may further include crosslinking the impact copolymer.

The present disclosure relates to a thermoplastic vulcanizate including a polypropylene and a copolymer. The copolymer may have an ethylene content, a propylene content, and an a, α,ω-diene content. The thermoplastic vulcanizate has a shore hardness of about 20 Shore A or greater. Alternatively, a thermoplastic vulcanizate may include a polypropylene and an elastomeric polymer and have a shore hardness of about 50 MPa or greater, a tensile strength at yield of about 18 MPa or greater, and an oil swell of about 15% weight gain or less. Additionally, the present disclosure relates to processes for producing thermoplastic vulcanizates. A process may include introducing a catalyst and propylene to a first reactor to form a first polymer, and introducing the first polymer, ethylene, at least one α,ω-diene, and optionally additional propylene to a second reactor to form an impact copolymer. The process may further include crosslinking the impact copolymer.