Disclosed is a novel class of linear segmented non-elastomeric thermoplastic polyesteramides. The polymers are easily obtained by reacting a carboxylic acid-terminated prepolymer (derived by reacting at least a two-molar proportion of a dicarboxylic acid with a polymeric diol of molecular weight 400 to 6000) with a dicarboxylic acid and a diisocyanate.
The polymers so obtained have nylon-like properties, particularly nylon 11 or 12, but are distinguished from these nylons by superior high temperature properties. At the same time, they have excellent toughness and low water absorption characteristics.
本发明公开了一类新型线性分段非弹性热塑性聚酯酰胺。将
羧酸封端预聚物(通过至少二摩尔比例的二
羧酸与分子量为 400-6000 的聚合二元醇反应制得)与二
羧酸和二
异氰酸酯反应,可轻松获得这种聚合物。
这样得到的聚合物具有类似尼龙的特性,特别是尼龙 11 或 12,但与这些尼龙的区别在于其优异的高温特性。同时,它们还具有出色的韧性和低吸
水性。