OLEFIN- BASED POLYMER COMPOSITION AND FROMED PRODUCT THEREOF

This invention relates to: an olefin-based polymer composition comprising: a component derived from a copolymer (A) (100 parts by mass) comprising a constitutional unit derived from ethylene, a constitutional unit derived from an α-olefin having 3 to 20 carbon atoms, and a constitutional unit derived from non-conjugated polyene and having (a-1) the Mooney viscosity [ML1+4 (125°C)] of 50 to 200; one or more types of crystalline propylene-based polymers (B) (10 to 50 parts by mass in total) that satisfy the requirements (b-1) and (b-2): (b-1) MFR (230°C, load 2.16 kg) of 0.1 to 4 g/10 min; and (b-2) a melting point (Tm) measured by DSC of 100°C to 200°C; one or more types of crystalline propylene-based polymers (C) (5 to 30 parts by mass in total) that satisfy the requirements (c-1) and (c-2): (c-1) MFR (230°C, load 2.16 kg) of 5 to 15 g/10 min; and (c-2) a melting point (Tm) measured by DSC of 100°C to 200°C; and low-molecular-weight polyolefin (D) (4 to 18 parts by mass) that satisfies the requirement (d-1): (d-1) the number average molecular weight measured by gel permeation chromatography of 3,000 to 10,000, wherein the amounts of (B), (C), and (D) are each relative to 100 parts by mass of (A) and at least a part of the component derived from the copolymer (A) is crosslinked by a phenol resin-based crosslinking agent (E); and a formed product obtained from the olefin-based polymer composition.