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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
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