甲基丙烯酸氢化松香醇酯的合成与表征

Synthesis and Characterization of Hydroabietyl Methacrylate

将甲基丙烯酰氯和氢化松香醇按酰氯与羟基物质的量之比1∶1进行酯化反应合成了甲基丙烯酸氢化松香醇酯,并采用FT-IR、GC-MS、13C NMR和DSC对其进行分析和表征。结果表明,甲基丙烯酸氢化松香醇酯主要由甲基丙烯酸四氢松香酯、甲基丙烯酸二氢松香酯、甲基丙烯酸去氢松香酯和少量氢化松香甲酯组成,前3个组分质量分数总和为78.76%,所制备的甲基丙烯酸氢化松香醇酯在引发剂的存在下可以发生聚合反应,其聚合活性比丙烯酸氢化松香醇酯高,均聚物玻璃化转变温度为-11.32℃,可作为反应型增黏树脂在压敏胶黏剂中使用。

Hydroabietyl methacrylate was synthesized by the reaction of methacrylic chloride with hydroabietyl alcohol under hydroxyl-to-chloride molar ratio of 1∶1 and its stucture was characterized by FT-IR,GC/MS,13CNMR,and DSC.The results showed that hydroabietyl methacrylate was mainly composed of tetraabietyl methacrylate,dihydroabietyl methacrylate,dehydroabietyl methacrylate,and a small amount of methyl hydroabietate.The total mass fraction of the prepared hydroabietyl methacrylate was 78.76 %.Hydroabietyl methacrylate could polymerize in the present of initiators and exhibited higher polymeric activity than hydroabietyl acrylate.The glass transition temperature of polymer is around-11.32 ℃,which enable hydroabietyl methacrylate to be used as internal plasticizer or reactive tackifying resin.