The present invention relates to a process for the preparation of a polyethylene wax, the process comprising the steps of providing a catalyst solution, wherein the catalyst solution comprises at least one activating compound, an alkylaluminoxane and a me-tallocene complex, wherein the molar ratio of the activating compound to aluminum comprised in the alkylaluminoxane is from 0.0005 to 0.20; and polymerizing ethylene, by contacting the ethylene and the catalyst solution.

The present invention relates to a process for the preparation of a polyethylene wax, the process comprising the steps of providing a catalyst solution, wherein the catalyst solution comprises at least one activating compound, an alkylaluminoxane and a me-tallocene complex, wherein the molar ratio of the activating compound to aluminum comprised in the alkylaluminoxane is from 0.0005 to 0.20; and polymerizing ethylene, by contacting the ethylene and the catalyst solution.

The metallocene compound represented by the following general formula (1): ##STR00001##
(the numerals and signs in the general formula (1) are as described in the description).

The metallocene compound represented by the following general formula (1): ##STR00001##
(the numerals and signs in the general formula (1) are as described in the description).

The metallocene compound represented by the following general formula (1): ##STR00001##
(the numerals and signs in the general formula (1) are as described in the description).

An injection molded article made from or containing a propylene-based composition made from or containing: T1) from 90 wt % to 50 wt % of a propylene homopolymer; and T2) from 10 wt % to 50 wt % of a polymer composition made from or containing A) 5-35% by weight of a propylene homopolymer or a propylene ethylene copolymer; B) 20-50% by weight of a copolymer of ethylene and a C.sub.3-C.sub.8 alpha-olefin containing from 0.1% to 20% by weight of alpha-olefin units; and C) 30-60% by weight of a copolymer of ethylene and propylene containing from 25% to 75% by weight of ethylene units.

An injection molded article made from or containing a propylene-based composition made from or containing: T1) from 90 wt % to 50 wt % of a propylene homopolymer; and T2) from 10 wt % to 50 wt % of a polymer composition made from or containing A) 5-35% by weight of a propylene homopolymer or a propylene ethylene copolymer; B) 20-50% by weight of a copolymer of ethylene and a C.sub.3-C.sub.8 alpha-olefin containing from 0.1% to 20% by weight of alpha-olefin units; and C) 30-60% by weight of a copolymer of ethylene and propylene containing from 25% to 75% by weight of ethylene units.

A flame-retardant rubber composition is provided which is excellent in flame retardancy and rubber properties and reduces environmental load. The flame-retardant rubber composition comprises an ethylene/α-olefin/non-conjugated diene copolymer, a hydrated metal oxide, a silane coupling agent, a plasticizer, and a cross-linking agent, wherein a carbon number of the α-olefin of the ethylene/α-olefin/non-conjugated diene copolymer is three and more, and 180 to 350 parts by mass of the hydrated metal oxide and 10 to 60 parts by mass of the plasticizer are included per 100 parts by mass of the ethylene/α-olefin/non-conjugated diene copolymer.

A flame-retardant rubber composition is provided which is excellent in flame retardancy and rubber properties and reduces environmental load. The flame-retardant rubber composition comprises an ethylene/α-olefin/non-conjugated diene copolymer, a hydrated metal oxide, a silane coupling agent, a plasticizer, and a cross-linking agent, wherein a carbon number of the α-olefin of the ethylene/α-olefin/non-conjugated diene copolymer is three and more, and 180 to 350 parts by mass of the hydrated metal oxide and 10 to 60 parts by mass of the plasticizer are included per 100 parts by mass of the ethylene/α-olefin/non-conjugated diene copolymer.

The present invention relates to an ethylene/alpha-olefin copolymer having excellent volume resistance and light transmittance, and a method for preparing the same.