| 摘要 |
Provided is a polyether-ester-amide consisting essentially of about 5 to 50 weight percent of polaymide segment (A) and about 95 to 50 weight percent of polyether ester segment (B), and having a melting point not lower than 160 DEG C., a Shore hardness in the range of 80A to 45D, a tensile modulus in the range of 100 to 1,000 kg/cm2 and an elastic recovery at 50% elongation of not less than 70%, said polyamide segment (A) having been obtained from: a C6-C20 aliphatic diamine (A-1); and at least one dicarboxylic acid (A-2) selected from the group consisting of C6-C15 aliphatic dicarboxylic acids, terephthalic acid and hexahydroterephthalic acid, provided the total number of carbon atoms of said diamine and said dicarboxylic acid is not less than 16, said polyether ester segment (B) having been obtained from: a poly(alkylene oxide) glycol (B-1) having a ratio of carbon atom number to oxygen atom number of not smaller than 2.3 and having a number average molecular weight in the range of 300 to 5,000; and a C4-C20 dicarboxylic acid (B-2).
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