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采用硅胶作为制备水不溶性季铵盐杀菌剂的原料，以γ-胺丙基三甲氧基硅烷作为联接硅胶和杀菌活性官能团的偶联剂。在硅胶上键合γ-胺丙基三甲氧基硅烷的最佳反应条件为：使用二甲苯作反应溶剂，80℃反应6h以上，硅烷与硅胶的重量比为1∶1左右。固载硅烷的硅胶叔胺化条件为：使用甲苯和二甲苯作反应溶剂，100℃反应4h以上，甲酸与甲醛的体积比为1∶1。使用所研制的中间体制备的水不溶性杀菌剂用量在2mg/ml时杀菌率达到97%。
Silica gel is used as a raw material for preparing the water-insoluble quaternary ammonium bactericide, and γ-aminopropyltrimethoxysilane is used as a coupling agent for linking the silica gel and the bactericidal active functional group. The optimum reaction conditions for bonding γ-aminopropyltrimethoxysilane on silica gel are as follows: using xylene as the reaction solvent, the reaction is carried out at 80 ° C. for 6 h, and the weight ratio of silane to silica gel is about 1: 1. Silica gel immobilized silane tertiary amination conditions: the use of toluene and xylene as the reaction solvent, 100 ℃ reaction 4h above, formic acid and formaldehyde volume ratio of 1: 1. The amount of water-insoluble bactericide prepared using the prepared intermediates reached 97% at 2 mg / ml.