| abstract |
The 1-butene copolymers satisfying the following (1 '') to (4 '') provide a molded article which is less sticky and has excellent flexibility and transparency.n n n Using a (1 '') differential scanning calorimeter (DSC), the melting point (Tm-P) defined as the peak peak of the peak observed on the highest temperature side of the obtained melting endothermic curve is not observed or is 0 to 100 ° C. Crystalline resin,n n n (2 '') stereoregularity index of 20 or less {(mmmm) / (mmrr + rmmr)},n n n (3 '') molecular weight distribution (Mw / Mn) measured according to gel permeation chromatography (CPC) method of 4.0 or less, andn n n (4 '') Weight average molecular weight (Mw) measured according to GPC method of 10,000 to 1,000,000. |