论文部分内容阅读
1 前言 三羟甲基丙烷(简称TMP)是生产聚氨酯泡沫塑料、聚氨酯涂料和粘合剂的重要原料,并可用于树脂改性。 试验采用工业甲醛和正丁醛为原料,以碱为催化剂,经羟醛缩合坎尼查罗反应合成三羟甲基丙烷。在羟醛缩合反应中伴有多种副产物。资料报道,三羟甲基丙烷的分析方法有高压液相色谱法、离子交换色谱法、凝胶渗透色谱法、气液色谱法。作者根据现
1 Introduction Trimethylolpropane (hereinafter referred to as TMP) is an important raw material for the production of polyurethane foam, polyurethane coatings and adhesives, and can be used for resin modification. In the experiment, industrial formaldehyde and n-butyraldehyde were used as raw materials and alkali as catalyst to synthesize trimethylolpropane by aldol condensation cannilacho reaction. In the aldol condensation reaction with a variety of by-products. Data reported, trimethylolpropane analysis methods are high pressure liquid chromatography, ion exchange chromatography, gel permeation chromatography, gas-liquid chromatography. According to the author