| 摘要 |
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. |
