| 摘要 |
A molding elastomeric composition having superior flexibility, high-impact properties, high mechanical strengths (particularly, flexural modulus), good moldability (particularly, mold-release characteristics) and appearance of the resulting molded products is provided, the composition being obtained (a) by blending a specified proportion of a specified hydrogenated styrene-butadiene-styrene block copolymer having a specified solution viscosity, with a propylene copolymer of a propylene-ethylene block copolymer (I) with a crystalline propylene-ethylene random copolymer (II) in a specified blending ratio; or (b) by blending the specified proportion of the hydrogenated material and a specified proportion of a non-crystalline ethylene- alpha -olefin random copolymer with the propylene copolymer of (I) with (II); or (c) by blending a specified proportion of the propylene copolymer of (I) with (II), a specified proportion of the hydrogenated material, a specified proportion of the non-crystalline ethylene- alpha -olefin random copolymer and a specified proportion of a higher fatty acid amide.
|
