A polyamide resin composition is produced by melt kneading (A) 20 to 60 parts of a polyamide resin and (B) 40 to 80 parts of an ethylene copolymer comprising (a) 40 to 90 wt% of an ethylene unit, (b) 5 to 60 wt% of an α,β-unsaturated carboxylic acid alkyl ester unit and (c) 0.3 to 10 wt% of a maleic anhydride unit to form a partially crosslinked composition (I) and adding 50 to 1,000 parts by weight of a polyamide resin to 100 parts by weight of the composition (I) and melt kneading the resulting mixture.
The resultant composition is moldable and has excellent impact resistance.
Preferably to the composition (I) is added a polyfunctional compound which reacts with (B) and (C) and causes cross-linking thereof in the kneading.
一种聚酰胺
树脂组合物是通过熔融捏合(A)20 至 60 份聚酰胺
树脂和(B)40 至 80 份
乙烯共聚物生产的,
乙烯共聚物包括(a)40 至 90 wt%的
乙烯单元,(b)5 至 60 wt%的 α,β-不饱和
羧酸烷基酯单元和(c)0.3 至 10 wt%的
马来酸酐单元,以形成部分交联的组合物 (I),然后将 50 至 1,000 重量份的聚酰胺
树脂加入 100 重量份的组合物 (I)中,并熔融捏合所得混合物。
这样得到的组合物具有良好的可模塑性和抗冲击性。
最好在组合物(I)中加入一种多官能化合物,它能与(B)和(C)发生反应,并在捏合过程中使其交联。