| 专利名称 | A PROCESS FOR PURIFICATION OF POLYETHER BLOCK COPOLYMERS | ||
| 申请号 | US16481566 | 申请日 | |
| 公开（公告）号 | US20200010618A1 | 公开（公告）日 | |
| 申请（专利权）人 | BASF SE | 发明人 | Hartwig Voss; Felicitas Guth; Emiel Jan Kappert; Pedro Sa Gomes |
| 专利来源 | 国家知识产权局 | 转化方式 | |
| 摘要 |
Process for providing purified polyether block copolymers comprising polyoxyethylene (PEO) and polyoxypropylene (PPO) moieties wherein the purified product is obtained by an ultrafiltration step of a solution of the polyether block copolymers and wherein the block copolymers are depleted in lower molecular impurities. |
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