| 申请日期 | 2025-07-14 | 申请号 | EP11172262 |
| 公开（公告）号 | EP2404892A1 | 公开（公告）日 | 2012-01-11 |
| 公开国别 | EP | 申请人省市代码 | 全国 |
| 申请人 | Shin Etsu Chemical Co Ltd; Nissin Chemical Industry Co Ltd | ||
| 简介 | A rare earth metal extractant in the form of a dialkyl diglycol amic acid is synthesized by reacting diglycolic anhydride with a dialkylamine in a synthesis medium. A molar ratio (B/A) of dialkylamine (B) to diglycolic anhydride (A) is at least 1.0. A non-polar or low-polar solvent in which the dialkyl diglycol amic acid is dissolvable is used as the synthesis medium. | ||
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