| 申请日期 | 2025-06-28 | 申请号 | US17521129 |
| 公开（公告）号 | US20220055913A1 | 公开（公告）日 | 2022-02-24 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | Shin Etsu Chemical Co Ltd | ||
| 简介 | Rare earth compound particles are prepared by a step of heating an aqueous solution containing rare earth metal ions and urea to form a rare earth compound by a reaction of a hydrolysis product of urea, and the rare earth metal ions. In the heating step, heating the aqueous solution into which an acetylene glycol-ethylene oxide adduct is added. | ||
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