| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the flexibility, mechanical characteristics, elastic recovery, etc., by forming a composition which has a specified melt strength and flexural modules and consists of a polyamide, a polymer alloy matrix comprising a polymer containing polyamide blocks and polyether blocks, and a crosslinked phase dispersed in the matrix. SOLUTION: This composition has a melt strength of at least 1.5 and a flexural modulus of 50-300MPa and consists of a polyamide (a) comprising a copolymer, such as PA 6/12, obtained by the condensation of component (1) comprising an amino acid such as aminocaproic acid or 7-aminoheptanoic acid, or a lactam such as caprolactam, component (2) comprising a salt of diamine such as hexamethylenediamine or dodecamethylenediamine with a diacid such as isophthalic acid, or a mixture thereof, and a component (3) comprising a mixture of these monomers, for example, caprolactam and lauryl lactam, a polymer alloy matrix (b) obtained by the copolycondensation of polyamide units having reactive terminal(s) and polyether units, and a crosslinked phase (c).</p> |
