| 主权项 |
1. A thermoplastic polymer composition comprising:
(I) a hydrogenated product of a block copolymer having a polymer block (A) mainly containing α-methylstyrene units and a polymer block (B) mainly containing conjugated diene compound units, in which the block copolymer has a number average molecular weight of 30,000 to 500,000; (II) a hydrogenated product of a block copolymer having a polymer block (A′) mainly containing aromatic vinyl compound units other than α-methylstyrene and a polymer block (B′) mainly containing conjugated diene compound units, in which the block copolymer has a number average molecular weight of 15,000 to 500,000 and has a hydroxyl group; (III) a polypropylene-based polymer; and (IV) a polyethylene-based polymerat a ratio satisfying the following expressions (1) to (4), wherein the mass ratio [(I):(II)] of the component (I) to the component (II) is 10:90 to 90:10:
0.03≦W(I)/(W(I)+W(II)+W(III)+W(IV))≦0.9 (1) 0.03≦W(II)/(W(I)+W(II)+W(III)+W(IV))≦0.9 (2) 0.03≦W(III)/(W(I)+W(II)+W(III)+W(IV))≦0.9 (3) 0.03≦W(IV)/(W(I)+W(II)+W(III)+W(IV))≦0.9 (4) wherein W(I), W(II), W(III), and W(IV) represent the mass contents of the component (I), the component (II), the component (III), and the component (IV) in the thermoplastic polymer composition, respectively. |
