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A platform for research: civil engineering, architecture and urbanism
MANUFACTURING METHOD OF DISPERSION HOLDING AGENT FOR HYDRAULIC MATERIAL
PROBLEM TO BE SOLVED: To provide a manufacturing method capable of easily providing a holding agent for a hydraulic material excellent in performance for holding dispersibility.SOLUTION: There is provided a method for manufacturing a holding agent for hydraulic material, including a process for polymerizing a monomer component containing an unsaturated polyalkylene glycol ether-based monomer (a), an unsaturated carboxylic acid-based monomer (b) and an unsaturated carboxylic acid ester-based monomer (c) in the presence of hydrogen peroxide, the hydrogen peroxide provides conversion phosphoric acid ion concentration in a hydrogen peroxide 5% solution of 600 mass.ppm or less.SELECTED DRAWING: None
【課題】分散性の保持性能に際立って優れる水硬性材料用保持剤を容易に与える製造方法を提供する。【解決手段】水硬性材料用保持剤を製造する方法であって、該製造方法は、過酸化水素の存在下で、不飽和ポリアルキレングリコールエーテル系単量体（ａ）、不飽和カルボン酸系単量体（ｂ）及び不飽和カルボン酸エステル系単量体（ｃ）を含む単量体成分を重合する工程を含み、該過酸化水素は、過酸化水素５％水溶液中の換算リン酸イオン濃度が６００質量ｐｐｍ以下となるものである、水硬性材料用保持剤の製造方法。【選択図】なし
MANUFACTURING METHOD OF DISPERSION HOLDING AGENT FOR HYDRAULIC MATERIAL
PROBLEM TO BE SOLVED: To provide a manufacturing method capable of easily providing a holding agent for a hydraulic material excellent in performance for holding dispersibility.SOLUTION: There is provided a method for manufacturing a holding agent for hydraulic material, including a process for polymerizing a monomer component containing an unsaturated polyalkylene glycol ether-based monomer (a), an unsaturated carboxylic acid-based monomer (b) and an unsaturated carboxylic acid ester-based monomer (c) in the presence of hydrogen peroxide, the hydrogen peroxide provides conversion phosphoric acid ion concentration in a hydrogen peroxide 5% solution of 600 mass.ppm or less.SELECTED DRAWING: None
【課題】分散性の保持性能に際立って優れる水硬性材料用保持剤を容易に与える製造方法を提供する。【解決手段】水硬性材料用保持剤を製造する方法であって、該製造方法は、過酸化水素の存在下で、不飽和ポリアルキレングリコールエーテル系単量体（ａ）、不飽和カルボン酸系単量体（ｂ）及び不飽和カルボン酸エステル系単量体（ｃ）を含む単量体成分を重合する工程を含み、該過酸化水素は、過酸化水素５％水溶液中の換算リン酸イオン濃度が６００質量ｐｐｍ以下となるものである、水硬性材料用保持剤の製造方法。【選択図】なし
MANUFACTURING METHOD OF DISPERSION HOLDING AGENT FOR HYDRAULIC MATERIAL
水硬性材料用分散保持剤の製造方法
KAWABATA HIROSHI (author)
2017-10-12
Patent
Electronic Resource
Japanese
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