【摘要】 本文提出了松香改性不饱和聚酯的最佳合成工艺条件以及制备了某些模型化合物,并用IR、UV、NMR、MS等方法分析鉴定。松香酸中的羧基与不饱和聚酯中的羟基反应生成酯,使聚酯端基失去活性不能再进一步反应;另一方面,Diels-Alder加成物产生支链,降低了结晶倾向。改性不饱和聚酯与苯乙烯能相互混溶,固化制品具有良好的抗水性与耐药品腐蚀性。更多还原

【Abstract】 The optimal conditions of rosin modification of unsaturated polyesters were found and the reaction mechanism which consists of both Diels-Alder addition reaction and esterification were investigated by means of IR, UV, NMR, and MS and by comparison with some related model compounds. It has been found that this chemical modification is mainly due to the reaction of the terminal hydroxyl groups of the polyesters-and the branching effect of Diels-Alder products, and hence, the water resistance, chemical resistance and the compatibility with styrene of the polyesters are improved.更多还原