Ethylene Based Polymer Composition And Pipe Comprising Same

Abstract: [Problem] The purpose of the present invention is to produce an ethylene-based polymer composition suitable for a polyethylene pipe having all of PE112 (MRS 11.2 MPa or more) performance in which higher creep strength is required, excellent moldability and low sagging properties. [Solution] The present invention relates to an ethylene-based polymer composition comprising 40 to 60% by mass of an ethylene homopolymer (A) that has an MFR (MFR2) value of 100 to 600 g/10 min when measured at a temperature of 190°C under a load of 2.16 kg and 60 to 40% by mass of a copolymer (B) of ethylene and an a-olefin having 4 or more carbon atoms [i.e., an ethylene-(a-olefin) copolymer (B)] [wherein the total amount of the components (A) and (B) is 100% by mass], the ethylene-based polymer composition being characterized by satisfying the following requirements (i) to (iii). (i) The density is within the range from 940 to 960 kg/m3. (ii) The amount of a component having logM of =7 is within the range from 0.35 to 0.80% when measured by GPC. (iii) The amount of a component having logM of =3 is 1.85% or less when measured by GPC.

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