| 申请日期 | 2025-07-17 | 申请号 | US15569862 |
| 公开（公告）号 | US20180291127A1 | 公开（公告）日 | 2018-10-11 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | BRIDGESTONE CORPORATION; Ajinomoto Co Inc | ||
| 简介 | A method for producing polyisoprene comprising : polymerizing isoprene by using an isoprene-containing composition containing isoprene and an oxygen-containing neutral compound, and a polymerization catalyst composition containing a rare earth element compound and an organometallic compound, wherein : —a compounding amount of the organometallic compound is 0.6 to 3.0 parts by mass per 100 parts by mass of the isoprene-containing composition. | ||
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