以壬基酚和甲醛为原料,强酸性阳离子交换树脂为催化剂,在80~100℃条件下发生缩合反应,经抽滤去除催化剂后,将滤液蒸馏制得壬基酚醛树脂。对催化剂用量、反应温度、反应时间、酚醛摩尔比等影响酚醛树脂合成的四个主要因素进行了L_9(3~4)...以壬基酚和甲醛为原料,强酸性阳离子交换树脂为催化剂,在80~100℃条件下发生缩合反应,经抽滤去除催化剂后,将滤液蒸馏制得壬基酚醛树脂。对催化剂用量、反应温度、反应时间、酚醛摩尔比等影响酚醛树脂合成的四个主要因素进行了L_9(3~4)正交试验,得到了黏度为600 000 m Pa·s左右的高黏度壬基酚醛树脂。结果表明:本工艺合成方法简单,后处理工艺简单,与传统无机酸碱催化法相比,不需水洗催化剂,催化剂可回收再用,环境污染小;壬基酚醛树脂为红棕色液体,性能稳定,可用作油墨和乙丙橡胶的辅剂。展开更多
The novel carbon-based acid catalyst has been applied to catalyzing the acetalization and ketalization. The results showed that the catalyst was very efficient with the average yield over 93%. The novel het- erogeneou...The novel carbon-based acid catalyst has been applied to catalyzing the acetalization and ketalization. The results showed that the catalyst was very efficient with the average yield over 93%. The novel het- erogeneous catalyst has the advantages of high activity, wide applicability even to 7-membered ring acetals, strikingly simple workup procedure, non-pollution, and reusability, which will contribute to the green process greatly.展开更多
文摘以壬基酚和甲醛为原料,强酸性阳离子交换树脂为催化剂,在80~100℃条件下发生缩合反应,经抽滤去除催化剂后,将滤液蒸馏制得壬基酚醛树脂。对催化剂用量、反应温度、反应时间、酚醛摩尔比等影响酚醛树脂合成的四个主要因素进行了L_9(3~4)正交试验,得到了黏度为600 000 m Pa·s左右的高黏度壬基酚醛树脂。结果表明:本工艺合成方法简单,后处理工艺简单,与传统无机酸碱催化法相比,不需水洗催化剂,催化剂可回收再用,环境污染小;壬基酚醛树脂为红棕色液体,性能稳定,可用作油墨和乙丙橡胶的辅剂。
基金Supported by the National High-Tech R&D Program (863 Program) (Grant No. 2005AA320010-2)
文摘The novel carbon-based acid catalyst has been applied to catalyzing the acetalization and ketalization. The results showed that the catalyst was very efficient with the average yield over 93%. The novel het- erogeneous catalyst has the advantages of high activity, wide applicability even to 7-membered ring acetals, strikingly simple workup procedure, non-pollution, and reusability, which will contribute to the green process greatly.
