Plastics composition based on a thermoplastic blend of a polyamide and a polyester
申请人:DSM N.V.
公开号:EP0481556A1
公开(公告)日:1992-04-22
Disclosed is a plastics composition comprising a thermoplastic blend based on:
(1) 5-95 wt.% of a polyamide (PA) and 95-5 wt.% of a polyester (PE) incorporating 1-50 wt.% of an aliphatic dimer fatty acid,
(2) 0,01-30 parts by weight of a compound having an ethylenically unsaturated group and/or a propylene group and a carboxylic, acid anhydride, acid amide, imido, carboxylic ester, amino or hydroxyl group per 100 parts by weight of PA and PE,
(3) 0-90 parts by weight of a polyester not modified with dimer fatty acid per 100 parts by weight of PA and PE.
Preferably the polyester (PE) is a polyethylene terephthalate or polybutylene terephthalate modified with di-oleic acid. The blends have a greatly improved elongation at break and are readily spinnable.
本发明公开了一种塑料组合物,该组合物包含一种热塑性混合物,其基础材料为
(1) 5-95重量份的聚酰胺(PA)和95-5重量份的聚酯(PE),其中含有1-50重量份的脂肪族二聚脂肪酸、
(2) 每 100 重量份的 PA 和 PE 中含有 0.01-30 重量份具有乙烯不饱和基团和/或 丙烯基团以及羧基、酸酐、酸酰胺、亚胺、羧酸酯、氨基或羟基的化合物、
(3) 每 100 份 PA 和 PE 中含 0-90 份(按重量计)未用二聚体脂肪酸改性的聚酯。
聚酯(PE)最好是经二油酸改性的聚对苯二甲酸乙二醇酯或聚对苯二甲酸丁二醇酯。混合物的断裂伸长率大大提高,并且易于纺丝。