| 聚羧酸系减水剂用聚乙二醇甲基丙烯酸单酯的制备 |
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| 引用本文： | 刘宝生,黄军左,陈小平. 聚羧酸系减水剂用聚乙二醇甲基丙烯酸单酯的制备[J]. 化学世界, 2011, 52(8): 494-496,503 |
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| 作者姓名： | 刘宝生 黄军左 陈小平 |
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| 作者单位： | 广东石油化工学院化工与环境工程学院,广东茂名,525000 |
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| 摘 要： | 以甲基丙烯酸、聚乙二醇为主要原料,对甲苯磺酸为催化剂,对苯二酚为阻聚剂,通过酯化反应合成聚乙二醇甲基丙烯酸单酯.通过正交实验确定酯化反应的最佳条件:甲基丙烯酸与聚乙二醇摩尔比为4∶1,催化剂对甲基苯磺酸为4％(以聚乙二醇质量计),阻聚剂对苯二酚为1％(以甲基丙烯酸质量计),温度为85℃,反应时间6h,其酯化率达到99....
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| 关 键 词： | 甲基丙烯酸 聚乙二醇 聚乙二醇甲基丙烯酸单酯 酯化率 |
Preparation of Monomethacrylate Ester Used as Polycarboxylic Water Reducer |
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| LIU Bao-sheng,HUANG Jun-zuo,CHEN Xiao-ping. Preparation of Monomethacrylate Ester Used as Polycarboxylic Water Reducer[J]. Chemical World, 2011, 52(8): 494-496,503 |
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| Authors: | LIU Bao-sheng HUANG Jun-zuo CHEN Xiao-ping |
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| Affiliation: | LIU Bao-sheng,HUANG Jun-zuo,CHEN Xiao-ping(Institute of Chemical & Environment Engineering,Guangdong University of Petrochemical Technology GuangdongMaoming 525000,China) |
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| Abstract: | Polyethylene glycol acrylate(PEGA) was synthesized by condensation of polyethylene glycol and methacrylic acid with toluene-4-sulfonic acid as the catalyst and hydroquinone as the inhibitor.The optimal conditions of esterification were studied by the orthogonal design.When the molar ratio of acrylic acid to PEG was 4.0∶1.0,the reaction temperature was 85 °C,the reaction time was 6 h,the amount of catalyst was 4% according to the mass of polyethylene glycol,and the amount of inhibitor was 1% according to the mass of methacrylic acid,the rate of esterification was 99.2%.The structure of the PEGA product was characterized by FT IR. |
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| Keywords: | methacrylic acid polyethylene glycol methacrylate polyglycol monoester esterification rate |
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