SYNTHESIS OF SEQUENTIAL POLYAMIDE BY DIRECT POLYCONDENSATION
SYNTHESIS OF SEQUENTIAL POLYAMIDE BY DIRECT POLYCONDENSATION
复制标题
DOI：
10.1295/polymj.23.167
复制
发表时间：
1991-01-01
期刊：
影响因子：
2.8
通讯作者：
SATO, R
中科院分区：
文献类型：
--
作者：
UEDA, M;KAKUTA, M;SATO, R
本文介绍了一种合成连续聚酰胺（头对头或尾对尾）的简便方法。 该聚合物是由对称单体（YccY）、丁二酸（2b）和非对称单体（XabX）、2，6-二甲基-对苯二胺（4）使用活化剂二苯基（2，3-二氢-2-硫代-3-苯并恶唑基）磷酸酯（1）直接缩聚而制备的。 通过将2b缓慢加入到4中进行缩聚，并得到具有0.2dlg-1的特性粘度的连续（头对头或尾对尾）聚酰胺（14）。 制备具有不同s值（-accb-放置概率）的真实聚酰胺以验证聚酰胺14的结构。 此外，模型反应进行了详细的研究，以证明顺序聚酰胺化的可行性。
A convenient method for the synthesis of sequential polyamide (head-to-head, or tail-to-tail) has been developed. This polymer was prepared by the direct polycondensation of symmetric monomer (YccY), isophthalic acid (2b) with nonsymmetric monomer (XabX), 2,6-dimethyl-p-phenylenediamine (4) using the activating agent, diphenyl(2,3-dihydro-2-thioxo-3-benzoxazolyl)phosphate (1). The polycondensation was carried out by slow addition of 2b to 4, and gave the sequential (head-to-head, or tail-to-tail) polyamide (14) with inherent viscosity of 0.2 dlg-1. The authentic polyamides with different values of s (probability of -accb- placement) were prepared to verify the structure of polyamide 14. Furthermore, the model reaction was studied in detail to demonstrate the feasibility of the sequential polyamidation.