Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of ester anticorrosive polycarboxylate superplasticizer
The invention belongs to the technical field of preparation of polycarboxylate superplasticizers, and discloses a preparation method of an ester anticorrosive polycarboxylate superplasticizer, which comprises the following steps: adding methoxy polyethylene glycol with N ethylene glycol units (N is an integer greater than or equal to 4 and less than or equal to 98) into a reaction container, adding a catalyst and a stabilizer, then adding an acrylic monomer and the catalyst, and finally adding a water-carrying agent, heating materials in the reaction container through heating equipment, enabling the materials to react for a preset time under the condition of introducing nitrogen, evaporating out the water-carrying agent through a reduced pressure distillation method, obtaining an esterification product, adjusting the pH value to a preset pH value through a dilute alkali solution, adjusting the solid content of the solution to a preset concentration, and carrying out functionalization treatment on the prepared solution, so as to obtain the water-containing esterification product. The preparation method disclosed by the invention is simple to operate, mild in reaction condition and suitable for industrial production, has excellent practicability and wide application prospect, and can meet actual requirements of different projects.
本发明属于聚羧酸减水剂制备技术领域，且公开了一种酯类防腐型聚羧酸减水剂制备方法，将具有N个乙二醇单元的甲氧基聚乙二醇加入反应容器中，4≤N≤98，(N为整数)，并加入催化剂、稳定剂，然后加入丙烯酸类单体、催化剂，最后加入带水剂，并且通过加热设备对反应容器内部物料加热，让物料在通入氮气条件下反应预设时间，通过减压蒸馏的方法蒸出带水剂，并得到酯化产物，通过稀碱溶液调整pH值到预设PH值，并调配溶液含固量至预设浓度，将调配好的溶液进行官能化处理，得到酯类防腐型聚羧酸减水剂，本发明的制备方法操作简单，反应条件温和，适合工业化生产，具有优良的实用性和广泛的应用前景，可以满足不同工程实际需要。
Preparation method of ester anticorrosive polycarboxylate superplasticizer
The invention belongs to the technical field of preparation of polycarboxylate superplasticizers, and discloses a preparation method of an ester anticorrosive polycarboxylate superplasticizer, which comprises the following steps: adding methoxy polyethylene glycol with N ethylene glycol units (N is an integer greater than or equal to 4 and less than or equal to 98) into a reaction container, adding a catalyst and a stabilizer, then adding an acrylic monomer and the catalyst, and finally adding a water-carrying agent, heating materials in the reaction container through heating equipment, enabling the materials to react for a preset time under the condition of introducing nitrogen, evaporating out the water-carrying agent through a reduced pressure distillation method, obtaining an esterification product, adjusting the pH value to a preset pH value through a dilute alkali solution, adjusting the solid content of the solution to a preset concentration, and carrying out functionalization treatment on the prepared solution, so as to obtain the water-containing esterification product. The preparation method disclosed by the invention is simple to operate, mild in reaction condition and suitable for industrial production, has excellent practicability and wide application prospect, and can meet actual requirements of different projects.
本发明属于聚羧酸减水剂制备技术领域，且公开了一种酯类防腐型聚羧酸减水剂制备方法，将具有N个乙二醇单元的甲氧基聚乙二醇加入反应容器中，4≤N≤98，(N为整数)，并加入催化剂、稳定剂，然后加入丙烯酸类单体、催化剂，最后加入带水剂，并且通过加热设备对反应容器内部物料加热，让物料在通入氮气条件下反应预设时间，通过减压蒸馏的方法蒸出带水剂，并得到酯化产物，通过稀碱溶液调整pH值到预设PH值，并调配溶液含固量至预设浓度，将调配好的溶液进行官能化处理，得到酯类防腐型聚羧酸减水剂，本发明的制备方法操作简单，反应条件温和，适合工业化生产，具有优良的实用性和广泛的应用前景，可以满足不同工程实际需要。
Preparation method of ester anticorrosive polycarboxylate superplasticizer
一种酯类防腐型聚羧酸减水剂制备方法
LIN CHUNDONG (Autor:in) / WU HONGBIN (Autor:in) / LIN CONG (Autor:in) / WANG SHU (Autor:in) / LIU CHUNNIAN (Autor:in) / ZHENG JIANMIN (Autor:in) / LI WENJIE (Autor:in)
13.02.2024
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2023
Ester polycarboxylate superplasticizer formula and preparation method thereof
| Europäisches Patentamt | 2021