广东化工
廣東化工
엄동화공
GUANGDONG CHEMICAL INDUSTRY
2012年
1期
4-6
,共3页
柠檬酸%季戊四醇%硬脂酸%蜡%两步反应
檸檬痠%季戊四醇%硬脂痠%蠟%兩步反應
저몽산%계무사순%경지산%사%량보반응
citric acid%pentaerythritol%stearic acid%wax%two-step reaction
以柠檬酸、季戊四醇、硬脂酸为原料,采用直接酯化的两步反应合成了柠檬酸硬脂酸季戊四醇酯蜡,并对反应条件进行了优化。固定季戊四醇为0.1 mol的最佳条件为：第一步反应温度为200℃,时间1 h,硬脂酸用量28 g,催化剂为总质量的0.4%;第二步柠檬酸用量为10 g,反应温度150℃,反应时间3 h。最终产物为蜡状物质,酸值为2.2 mgKOH/g,针入度为0.1 mm,滴熔点为70℃。
以檸檬痠、季戊四醇、硬脂痠為原料,採用直接酯化的兩步反應閤成瞭檸檬痠硬脂痠季戊四醇酯蠟,併對反應條件進行瞭優化。固定季戊四醇為0.1 mol的最佳條件為：第一步反應溫度為200℃,時間1 h,硬脂痠用量28 g,催化劑為總質量的0.4%;第二步檸檬痠用量為10 g,反應溫度150℃,反應時間3 h。最終產物為蠟狀物質,痠值為2.2 mgKOH/g,針入度為0.1 mm,滴鎔點為70℃。
이저몽산、계무사순、경지산위원료,채용직접지화적량보반응합성료저몽산경지산계무사순지사,병대반응조건진행료우화。고정계무사순위0.1 mol적최가조건위：제일보반응온도위200℃,시간1 h,경지산용량28 g,최화제위총질량적0.4%;제이보저몽산용량위10 g,반응온도150℃,반응시간3 h。최종산물위사상물질,산치위2.2 mgKOH/g,침입도위0.1 mm,적용점위70℃。
Citric stearic pentaerythritol ester was synthesized from citric acid,stearic acid and pentaerythritol in two steps.The reaction condition was optimumed as follow： in the first step of the reaction,n（Pentaerythritol）∶n（Stearic acid）=1∶1,the temperature was 200 ℃,reaction time was 1 h,mass fraction of p-toluene sulfonic acid was 0.4 %;in the second step of the reaction,n（citric acid）∶n（Pentaerythritol）=0.48∶1,reaction temperature was 150 ℃,reaction time was 3 h.The final product looks like wax,its character was as follow： acid value was 2.2 mgKOH/g,penertration degree was 0.1 mm,dropping point is 70 ℃.
