双季戊四醇五丙烯酸酯的合成及表征

Synthesis and characterization of dipentaerythritol pentaacrylate

以双季戊四醇和丙烯酸为原料,对甲苯磺酸为催化剂,直接酯化合成了双季戊四醇五丙烯酸酯,讨论了阻聚剂种类及用量、催化剂用量、丙烯酸与双季戊四醇的摩尔比对产率的影响,并利用红外光谱和质谱进行了定性分析,得到最佳合成条件是丙烯酸与双季戊四醇的摩尔比为5.8,催化剂用量为反应体系总质量的2.5%,阻聚剂为对羟基苯甲醚和2,2,6,6-四甲基-4-羟基哌啶氮氧自由基(TMHPO)的复配物,用量约为反应物总质量的2%。

Dipentaerythritol pentaacrylate（DPHPA） was synthesized by esterification reaction of dipentaerythritol and acrylic Acid（AA） with p- toluenesulphonic acid as catalyst.Effect of catalyst content, inhibitor category and content, mole ratio of acrylic acid to dipentaerythritol on yield of the product was discussed . The optimum reaction condition is that mole ratio of acrylic acid to dipentaerythritol is 5,8, catalyst dosage is 2.5% of the total mass, the inhibitor is p - methoxyphenol and 2,2,6, 6 - tertamethyl - 4 - hydroxy - piperidingloxy free mdica （TMHPO）, the dosage is about 2% of the total mass . The products were identified by IR, HPLC and MS.