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Method for preparing polycarboxylate water reducer
The invention relates to water reducers, in particular to a method for preparing a polycarboxylate water reducer. The method for preparing the polycarboxylate water reducer includes the following steps that 10-30 parts of polycarboxylate water reducer mother liquor, 5-10 parts of polyether glycol A, 5-10 parts of polyether glycol B and 40-80 parts of halogenated aliphatic acid or salt are added into a reaction kettle, and stirring is conducted for 2-3 hours at the temperature of 20-30 DEG C; the temperature rises to 60-120 DEG C, and 1-5 parts of catalyst are added for reacting for 4-6 hours; the temperature drops to 60-80 DEG C, and 10-20 parts of sulfonating agent are added for reacting 2-3 hours. According to the method, the polycarboxylate water reducer mother liquor and the two sorts of polyether glycol are combined for preparing the polycarboxylate water reducer, the reaction temperature is low, and the mother liquor generated in the production technology of the polycarboxylate water reducer can be effectively utilized. The polycarboxylate water reducer is green, environmentally friendly and safe to use.
Method for preparing polycarboxylate water reducer
The invention relates to water reducers, in particular to a method for preparing a polycarboxylate water reducer. The method for preparing the polycarboxylate water reducer includes the following steps that 10-30 parts of polycarboxylate water reducer mother liquor, 5-10 parts of polyether glycol A, 5-10 parts of polyether glycol B and 40-80 parts of halogenated aliphatic acid or salt are added into a reaction kettle, and stirring is conducted for 2-3 hours at the temperature of 20-30 DEG C; the temperature rises to 60-120 DEG C, and 1-5 parts of catalyst are added for reacting for 4-6 hours; the temperature drops to 60-80 DEG C, and 10-20 parts of sulfonating agent are added for reacting 2-3 hours. According to the method, the polycarboxylate water reducer mother liquor and the two sorts of polyether glycol are combined for preparing the polycarboxylate water reducer, the reaction temperature is low, and the mother liquor generated in the production technology of the polycarboxylate water reducer can be effectively utilized. The polycarboxylate water reducer is green, environmentally friendly and safe to use.
Method for preparing polycarboxylate water reducer
GENG TIANYONG (author) / LI YINGHAO (author) / DONG WEI (author) / SUN YANCONG (author)
2016-01-06
Patent
Electronic Resource
English
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