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Polycarboxylate superplasticizer synthesis method
The invention discloses a synthetic method of a polycarboxylate superplasticizer, which comprises the following components: methoxy polyethylene glycol, maleic anhydride, sodium hydroxide, hydrogen peroxide (27.5%), sodium formaldehyde sulfoxylate, ammonium persulfate and isopropanol ethanol. The method has the beneficial effects that high-efficiency esterification of maleic anhydride can be realized at a relatively low temperature by utilizing the solid acid catalyst, the obtained esterified macromonomer has relatively high reaction activity in a subsequent copolymerization synthesis reaction, and the synthesis production efficiency is high, the solid content is high, and the yield is high. And high-efficiency esterification can be realized at a relatively low temperature through a solid acid catalysis effect.
本发明公开了一种聚羧酸减水剂合成方法，包括以下组分，甲氧基聚乙二醇、马来酸酐、氢氧化钠、过氧化氢(27.5％)、次硫酸氢钠甲醛、过硫酸铵、异丙醇乙醇；有益效果：利用固体酸催化剂,可以在较低温度下实现马来酸酐的高效酯化，且所获得的酯化大单体在后续共聚合成反应中具有较高的反应活性，通过该合成生产效率高，固含量高，通过设置的固体酸催化作用能够在较低温度下实现高效酯化。
Polycarboxylate superplasticizer synthesis method
The invention discloses a synthetic method of a polycarboxylate superplasticizer, which comprises the following components: methoxy polyethylene glycol, maleic anhydride, sodium hydroxide, hydrogen peroxide (27.5%), sodium formaldehyde sulfoxylate, ammonium persulfate and isopropanol ethanol. The method has the beneficial effects that high-efficiency esterification of maleic anhydride can be realized at a relatively low temperature by utilizing the solid acid catalyst, the obtained esterified macromonomer has relatively high reaction activity in a subsequent copolymerization synthesis reaction, and the synthesis production efficiency is high, the solid content is high, and the yield is high. And high-efficiency esterification can be realized at a relatively low temperature through a solid acid catalysis effect.
本发明公开了一种聚羧酸减水剂合成方法，包括以下组分，甲氧基聚乙二醇、马来酸酐、氢氧化钠、过氧化氢(27.5％)、次硫酸氢钠甲醛、过硫酸铵、异丙醇乙醇；有益效果：利用固体酸催化剂,可以在较低温度下实现马来酸酐的高效酯化，且所获得的酯化大单体在后续共聚合成反应中具有较高的反应活性，通过该合成生产效率高，固含量高，通过设置的固体酸催化作用能够在较低温度下实现高效酯化。
Polycarboxylate superplasticizer synthesis method
一种聚羧酸减水剂合成方法
REN PENGFEI (author) / ZHANG XIN (author) / DONG GAOJIAN (author)
2023-07-07
Patent
Electronic Resource
Chinese
| European Patent Office | 2023