Hydrogenated block copolymer
The purpose of the present invention is to provide: a hydrogenated block copolymer capable of giving compositions having an improved balance among wear resistance, low-temperature elongation, and extrusion moldability; and molded objects (e.g., interior automotive materials) of the compositions of t...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The purpose of the present invention is to provide: a hydrogenated block copolymer capable of giving compositions having an improved balance among wear resistance, low-temperature elongation, and extrusion moldability; and molded objects (e.g., interior automotive materials) of the compositions of the hydrogenated block copolymer. The hydrogenated block copolymer is a product of hydrogenation of a copolymer comprising vinylaromatic-compound monomer units and conjugated-diene monomer units and satisfies the following (1) to (3): (1) to have at least one block of a polymer of specific (b) and (c); (2) to have an elongation at break, as measured in accordance with JIS K 6251, of 1,000% or higher; and (3) to give a viscoelasticity chart which has at least one tanδ peak in the range of -25 DEG C to 80 DEG C. |
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