@ A new cross-linked polyester amide having structure in which the ester amide chain of the formula below:
(wherein R and R' each are a bivalent hydrocarbon radical; n is a positive integer) as obtained by the reaction of a bis(2-oxazoline) compound and a dicarboxylic acid is contained in the polymer chain and at least 5 % of its -NH- group is cross-linked with a 2-oxazoline ring by ring-opening addition reaction.
The cross-linked polyesteramide is tough and excel in abrasion resistance and solvent resistance and can be utilized in the molding of machinery parts such as rolls and gears and embedded molding of electrical machinery and apparatus parts as well as for electric insulating materials and materials for dental uses.
The resin composition comprising the said cross-linked polyesteramide and about 3 to 95 weight % of reinforcements and/or fillers can provide the molding material having excellent mechanical properties, especially outstanding toughness, that cannot possibly be expected with conventional fiber-reinforced plastics and also exhibiting superior characteristics such as thermal properties.
The resin composition can be utilized not only in the application fields for conventional fiber-reinforced plastics but also in the new application areas where conventional fiber-reinforced plastics have failed to achieve application development.
一种新型交联聚酯酰胺,其结构为下式的酯酰胺链:
(其中 R 和 R'均为二价烃基;n 为正整数)由双(2-
噁唑啉)化合物和二
羧酸反应而得,聚合物链中含有至少 5%的-NH-基团,并通过开环加成反应与 2-
噁唑啉环交联。
交联聚酯酰胺韧性好,耐磨性和耐溶剂性优异,可用于轧辊和齿轮等机械零件的成型、电气机械和设备零件的嵌入成型以及电气绝缘材料和牙科材料。
由上述交联聚酯酰胺和约 3 至 95 重量%的增强剂和/或填料组成的
树脂组合物可以提供具有传统纤维增强塑料无法达到的优异机械性能(尤其是出色的韧性)的成型材料,同时还具有热性能等优异特性。
该
树脂组合物不仅可用于传统纤维增强塑料的应用领域,还可用于传统纤维增强塑料未能实现应用发展的新应用领域。