Preferably, the carboxylic acid raw material contains glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid and 1,9-nanomethylenedicarboxylic acid in a total amount of 5 mass% or less.
所述羧酸原料含有总量小于或等于5质量％的戊二酸、己二酸、庚二酸、辛二酸、癸二酸和1，9-亚壬基二羧酸。
Preferably, the carboxylic acid raw material contains glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid and 1,9-nanomethylenedicarboxylic acid in a total amount of 5 mass% or less.
所述羧酸原料含有总量小于或等于5质量％的戊二酸、己二酸、庚二酸、辛二酸、癸二酸和1，9-亚壬基二羧酸。
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