solution polycondensation

The Effect of Tertiary Amine as Acid Acceptor on the Low-Temperature Solution Polycondensation and Copolycondensation

叔胺酸接受剂对低温溶液缩聚和共缩聚反应的影响

The PBO polymer solution was synthesized by means of polycondensation of 4,6-diaminoresorcinol ( DAR) and terephthalic acid ( TPA). At 180~ 200 ℃, the polymer starts to form liquid crystal state, and the fiber can be synthesized by using the dry-jet wet-spinning method.

采用4,6-二氨基间苯二酚（DAR）与对苯二甲酸（TPA）缩聚的方法制备PBO聚合物溶液，在180~200℃使聚合物形成液晶态，利用干喷湿纺制法制备纤维。

Benzimidazole compounds containing flexible group-O-,-SO2-,-CO-,-CH3 were prepared successfully by solution polycondensation.

采用溶液缩聚反应，成功合成了6种苯并咪唑化合物，合成化合物引入了柔性集团-O-、-SO-2-、-CO-、-CH3等。

Methods: The polycondensation of amino acids in liposome system as well as in aqueous buffer solution was started from amino acid-N-carboxyanhydrides ( NCAs).

方法：活化氨基酸的聚合反应在囊泡体系和对照缓冲溶液中进行，反应产物用高效液相色谱-质谱联用仪进行分离检测。

The monomeric dye with two active groups has no negative effect on solution polycondensation reaction.

双活性基团的染料单体可顺利参与溶液共缩聚反应中的链增长过程，反应活性与乙二醇相近，聚合型染料的产率和粘均分子量都很高；