| abstract |
(57) 【Abstract】 PROBLEM TO BE SOLVED: To obtain a molded product which is excellent in pressure resistance, heat resistance, and easy to handle after molding, and which is suitable in rigidity, low temperature characteristics, and dust adhesion. Provided are a copolymer, a resin composition containing the copolymer, and a resin molded product using the butene-propylene copolymer or the composition. A butene-propylene copolymer having a propylene content, a melting point of crystals measured by a differential scanning calorimeter, a tensile elastic modulus, an intrinsic viscosity [η], and an n-decane-soluble content within specific ranges. , A composition containing the copolymer, and a resin molded product comprising the copolymer or the composition. |