A process for preparing a triazine-based precursor for producing a micro-particulate complex containing a far infrared-emissive silica particle comprises steps of: a) subjecting 2-4-6-trichloro-1,3,5-triazine and a first nucleophilic compound to a displacement reaction in the presence of a first solvent at a first temperature range to form an intermediate; and b) subjecting the intermediate and a second nucleophilic compound to a further displacement reaction in the presence of a second solvent at a second temperature range higher than the first temperature range.
一种制备三嗪基前体以生产含有远红外辐射
二氧化硅微粒复合物的方法,包括以下步骤:a) 在第一溶剂的存在下,将2-4-6-三
氯-
1,3,5-三嗪和第一亲核化合物在第一温度范围内进行置换反应,形成中间体;b) 将中间体和第二亲核化合物在比第一温度范围更高的第二温度范围内在第二溶剂的存在下进行进一步的置换反应。