溶液缩聚

低温溶液缩聚合成聚芳醚酮酮的研究

Study on the synthesis of polyaromatic ether ketone ketones by low temperature solution polycondensation

叔胺酸接受剂对低温溶液缩聚和共缩聚反应的影响

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

本文采用低温溶液缩聚的方法，用polyethyleneglycolBis（4-carboxyphenyl）ethers（聚乙二醇双（4-羧苯）醚，简称PEG3）与对苯二胺首次成功地合成了热致性的液晶聚酰胺。

New thermotropic liquid crystalline polyamides were prepared from polyethyleneglycol bis ( 4-caroxylhenyl ) ethers ( PEG3 ) and p-phenylenediamine by using solution condensation method at a relative low temperature .

结果表明：高温溶液缩聚反应得到的产物，分子量高，溶解性好，耐热性高。

The results show that the polymer through high-temperature solution polycondensation has a high molecular weight , good solubility and heat-resistance .

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。

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

综述了溶液缩聚及直接熔融缩聚、熔融缩聚-扩链、熔融缩聚-固相聚合合成聚乳酸的研究进展。

The poly ( lactic acid ) synthesized by the solution polycondensation , direct melt polycondensation , melt polycondensation / chain extending and melt polycondensation / solid polymerization is reviewed .

由聚硅氧烷二胺、芳香族二胺、芳香族二酐溶液缩聚合成的含硅聚酰亚胺应用于硅二极管内层绝缘保护，显示出良好的应用前景。

Silicon - containing polyimides which are attained from polysiloxane , aromatic diamine , aromatic dianhydride by solution condensation approach are applied to silicon diode insulation protection and show a excellent prospect .

采用低温溶液法共缩聚反应合成了对苯二甲酰氯（TPC）摩尔分数为0.05~0.15的改性间位芳香族聚酰胺（PMIA）共聚物。

Modified meta-aramid ( PMIA ) copolymer with TPC mole fraction of 0.05 ~ 0.15 was prepared by low-temperature-solution polycondensation in DMAc .

本文分别采用低温溶液直接缩聚法和沉析法制备PPTA浆粕，并通过对其成形过程的数学分析，对PPTA浆粕的成形机理进行了较为深入的研究。

In this paper , PPTA pulps were prepared directly from the precipitation of PPTA solution that obtained from solution polycondensation at low temperature . The formation mechanism of PPTA pulps is investigated by means of mathematic analysis .

染料单体的活性基团对溶液共缩聚反应的影响

Effects of Active Groups of Monomeric Dyes on Solution Copolycondensation 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；

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

合成了3种不同的染料单体，通过溶液共缩聚反应研究了单体活性基团对缩聚反应的影响。

Three various monomeric dyes were prepared , the effects of the active groups of monomeric dyes on solution copolycondensation reaction were studied .

2，4，6－三溴苯酚在水溶液体系中的缩聚反应

Condensation Polymerization of 2,4,6-Tribromophenol in an Aqueous Solution System

pH值、表面活性剂PEG（600+20000）和溶液浓度是影响胶粒尺寸大小的重要因素，pH值通过影响溶液中水解和缩聚的程度来控制胶粒的形核与长大；

PH value , surfactant PEG ( 600 + 20000 ) and solution concentration were important parameters which affect colloid particles size . pH value controlled formed-nucleus and increment of colloid grains by influencing hydrolyzation reaction and polymerization reaction processing .