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MANUFACTURING METHOD OF WATER-REDUCING AGENT FOR HYDRAULIC MATERIAL
PROBLEM TO BE SOLVED: To provide a manufacturing method capable of easily providing a water-reducing agent for a hydraulic material having extremely excellent dispersion performance.SOLUTION: There is provided a method for manufacturing a water-reducing agent for a hydraulic material, including a process for polymerizing a monomer component containing an unsaturated polyalkylene glycol ether-based monomer (a) and an unsaturated carboxylic acid-based monomer (b) 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】際立って優れた分散性能を有する水硬性材料用減水剤を容易に与える製造方法を提供する。【解決手段】水硬性材料用減水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）及び不飽和カルボン酸系単量体（ｂ）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、水硬性材料用減水剤の製造方法。【選択図】なし
MANUFACTURING METHOD OF WATER-REDUCING AGENT FOR HYDRAULIC MATERIAL
PROBLEM TO BE SOLVED: To provide a manufacturing method capable of easily providing a water-reducing agent for a hydraulic material having extremely excellent dispersion performance.SOLUTION: There is provided a method for manufacturing a water-reducing agent for a hydraulic material, including a process for polymerizing a monomer component containing an unsaturated polyalkylene glycol ether-based monomer (a) and an unsaturated carboxylic acid-based monomer (b) 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】際立って優れた分散性能を有する水硬性材料用減水剤を容易に与える製造方法を提供する。【解決手段】水硬性材料用減水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）及び不飽和カルボン酸系単量体（ｂ）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、水硬性材料用減水剤の製造方法。【選択図】なし
MANUFACTURING METHOD OF WATER-REDUCING AGENT FOR HYDRAULIC MATERIAL
水硬性材料用減水剤の製造方法
KAWABATA HIROSHI (author)
2017-10-12
Patent
Electronic Resource
Japanese
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
| European Patent Office | 2019
| European Patent Office | 2018
| European Patent Office | 2015