A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Crosslinking monomer, crosslinking type polycarboxylate superplasticizer and preparation method
A crosslinking monomer is prepared by the following steps: 1) taking vinyl ether alcohol or allyl ether alcohol, a water-carrying agent, acrylic acid, a polymerization inhibitor and a catalyst according to a mass ratio of 100: (10-200): (60-120): (0.001-2): (0.001-10), and adding into a reactor; and 2) heating the reactor to 80-90 DEG C for reflux reaction until no water is evaporated out, reducing pressure to evaporate out the water-carrying agent, cooling to 30-50 DEG C, and adjusting the pH value to 2-3 to obtain a mixture of the crosslinking monomer and acrylic acid. the invention also provides a polycarboxylate superplasticizer prepared from the crosslinking monomer. The preparation process of the crosslinking monomer is simple, the reaction condition is mild, the crosslinking monomer is suitable for large-scale industrial production, the prepared crosslinking monomer can be used for preparing the polycarboxylate superplasticizer at normal temperature without special treatment, and hydrolysable double-bond-terminated polyfunctional group acrylate is introduced into the polycarboxylate superplasticizer, so that the slow release performance of the prepared polycarboxylate superplasticizer can be effectively improved.
一种交联单体，采用包括以下步骤制备：1)取乙烯基醚醇或烯丙基醚醇、带水剂、丙烯酸、阻聚剂、催化剂，乙烯基醚醇或烯丙基醚醇、带水剂、丙烯酸、阻聚剂、催化剂的质量比为100：10‑200：60‑120：0.001‑2：0.001‑10，加入反应器中；2)将反应器加热至80‑90℃回流反应，至无水分蒸出，减压将带水剂蒸出，降温至30‑50℃，调节pH至2‑3，得到交联单体和丙烯酸的混合物，本发明还提供了采用该交联单体制备的聚羧酸减水剂。本发明交联单体的制备过程简单、反应条件温和，适合大规模工业化生产，制备得到的交联单体无需特殊处理即可在常温下用于制备聚羧酸减水剂，且在聚羧酸减水剂中引入可水解的双键封端的多官能团丙烯酸酯，可有效提高制备得到的聚羧酸减水剂的缓释性能。
Crosslinking monomer, crosslinking type polycarboxylate superplasticizer and preparation method
A crosslinking monomer is prepared by the following steps: 1) taking vinyl ether alcohol or allyl ether alcohol, a water-carrying agent, acrylic acid, a polymerization inhibitor and a catalyst according to a mass ratio of 100: (10-200): (60-120): (0.001-2): (0.001-10), and adding into a reactor; and 2) heating the reactor to 80-90 DEG C for reflux reaction until no water is evaporated out, reducing pressure to evaporate out the water-carrying agent, cooling to 30-50 DEG C, and adjusting the pH value to 2-3 to obtain a mixture of the crosslinking monomer and acrylic acid. the invention also provides a polycarboxylate superplasticizer prepared from the crosslinking monomer. The preparation process of the crosslinking monomer is simple, the reaction condition is mild, the crosslinking monomer is suitable for large-scale industrial production, the prepared crosslinking monomer can be used for preparing the polycarboxylate superplasticizer at normal temperature without special treatment, and hydrolysable double-bond-terminated polyfunctional group acrylate is introduced into the polycarboxylate superplasticizer, so that the slow release performance of the prepared polycarboxylate superplasticizer can be effectively improved.
一种交联单体，采用包括以下步骤制备：1)取乙烯基醚醇或烯丙基醚醇、带水剂、丙烯酸、阻聚剂、催化剂，乙烯基醚醇或烯丙基醚醇、带水剂、丙烯酸、阻聚剂、催化剂的质量比为100：10‑200：60‑120：0.001‑2：0.001‑10，加入反应器中；2)将反应器加热至80‑90℃回流反应，至无水分蒸出，减压将带水剂蒸出，降温至30‑50℃，调节pH至2‑3，得到交联单体和丙烯酸的混合物，本发明还提供了采用该交联单体制备的聚羧酸减水剂。本发明交联单体的制备过程简单、反应条件温和，适合大规模工业化生产，制备得到的交联单体无需特殊处理即可在常温下用于制备聚羧酸减水剂，且在聚羧酸减水剂中引入可水解的双键封端的多官能团丙烯酸酯，可有效提高制备得到的聚羧酸减水剂的缓释性能。
Crosslinking monomer, crosslinking type polycarboxylate superplasticizer and preparation method
一种交联单体、交联型聚羧酸减水剂及制备方法
XIANG YING (author) / WANG YANAN (author) / HE ZHIXUAN (author) / FANG YILI (author) / LI XIAOBING (author) / DUAN CAIJUN (author) / YAN BANGMIN (author) / LAN JIANPING (author) / ZHANG DAN (author) / JIANG XIAOQIN (author)
2021-11-19
Patent
Electronic Resource
Chinese
Preparation method and application of isoprene crosslinking type polycarboxylate superplasticizer
| European Patent Office | 2024
| European Patent Office | 2023
| European Patent Office | 2023
| European Patent Office | 2023