应用化工
應用化工
응용화공
Applied Chemical Industry
2015年
9期
1707-1709,1713
,共4页
乙酰乙酸基甲基丙烯酸乙酯( AAEM)%甲基丙烯酸羟乙酯( HEMA)%酯交换%乙酰乙酸乙酯
乙酰乙痠基甲基丙烯痠乙酯( AAEM)%甲基丙烯痠羥乙酯( HEMA)%酯交換%乙酰乙痠乙酯
을선을산기갑기병희산을지( AAEM)%갑기병희산간을지( HEMA)%지교환%을선을산을지
acetoacetoxyethyl methacrylate( AAEM)%hydroxyethyl methacrylate( HEMA)%transesterifi-cation%ethyl acetoacetate
以甲基丙烯酸羟乙酯( HEMA)和乙酰乙酸乙酯( AAA)为原料,固体酸为催化剂,采用酯交换法合成了乙酰乙酸基甲基丙烯酸乙酯( AAEM)。采用单因素和正交实验的方法对反应条件进行了探究,确定较佳的反应条件为：n(AAA)∶n(HEMA)=3∶1,反应温度130℃,反应时间3 h,催化剂的用量4.5%(HEMA),阻聚剂的用量0.3%(HEMA)。在上述条件下,产品收率93%以上,含量97%,采用FTIR和1H NMR对产品结构进行了表征。
以甲基丙烯痠羥乙酯( HEMA)和乙酰乙痠乙酯( AAA)為原料,固體痠為催化劑,採用酯交換法閤成瞭乙酰乙痠基甲基丙烯痠乙酯( AAEM)。採用單因素和正交實驗的方法對反應條件進行瞭探究,確定較佳的反應條件為：n(AAA)∶n(HEMA)=3∶1,反應溫度130℃,反應時間3 h,催化劑的用量4.5%(HEMA),阻聚劑的用量0.3%(HEMA)。在上述條件下,產品收率93%以上,含量97%,採用FTIR和1H NMR對產品結構進行瞭錶徵。
이갑기병희산간을지( HEMA)화을선을산을지( AAA)위원료,고체산위최화제,채용지교환법합성료을선을산기갑기병희산을지( AAEM)。채용단인소화정교실험적방법대반응조건진행료탐구,학정교가적반응조건위：n(AAA)∶n(HEMA)=3∶1,반응온도130℃,반응시간3 h,최화제적용량4.5%(HEMA),조취제적용량0.3%(HEMA)。재상술조건하,산품수솔93%이상,함량97%,채용FTIR화1H NMR대산품결구진행료표정。
Acetoacetoxyethyl methacrylate ( AAEM ) was synthesized via a transesterification involving hydroxyethyl methacrylate( HEMA) and ethyl acetoacetate ( AAA) as raw materials and solid acid as a catalyst. The reaction conditions were studied by single factor and orthogonal test methods. The obtained optimum reaction conditions were:n(AAA)∶n(HEMA) =3∶1,reaction temperature 130℃,reaction time 3 h,the quantity of catalyst was equal to 4. 5% HEMA,the quantity of inhibitor was equal to 0. 3% HE-MA. Under above conditions, the product yield and purity were over 93% and 97%, respectively. The structure of the obtained product was characterized by FTIR and 1 H NMR.
