| 摘要 |
PURPOSE:To obtain the titled flexible composition having excellent breaking strength and high melt viscosity and suitable for blow-molding, by compounding a diisocyanate to a polyether ester amide consisting of an aminocarboxylic acid and a dicarboxylic acid, etc. CONSTITUTION:A polyether ester amide is produced by melt-polymerization of (A) a >=6C aminocarboxylic acid (e.g. omega-aminocaproic acid), lactam or a salt of a >=6C diamine and a dicarboxylic acid (e.g. salt of hexamethylenediamine and adipic acid), (B) a poly(alkylene oxide) glycol having a number-average molecular weight of 300-6,000 and (C) a 6-20C dicarboxylic acid (e.g. terephthalic acid). The copolymerized amount of the components B+C is e.g. 5-90wt%. The objective composition can be produced by melting and kneading a mixture obtained by mixing 100pts.wt. of the polyether ester amide with (D) 0.01-5pts.wt. of a diisocyanate (e.g. tolylene diisocyanate).
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