| 发明名称 | Method for producing polycarbonate polyols by the immortal polymerization of cyclic carbonates | ||
| 摘要 | The invention relates to a process for the preparation of polycarbonate polyols, characterized in that cyclic carbonates are polymerized in the presence of DMC catalysts and chain-transfer agents consisting of polyether carbonate polyols. | ||
| 申请公布号 | US9260562(B2) | 申请公布日期 | 2016.02.16 |
| 申请号 | US201113880288 | 申请日期 | 2011.11.03 |
| 申请人 | BAYER INTELLECTUAL PROPERTY GMBH | 发明人 | Müller Thomas Ernst;Gürtler Christoph;Kermagoret Anthony;Dienes Yvonne;Busygin Igor;Köhler Burkhard;Leitner Walter |
| 分类号 | C08G64/00;C08G64/30;C08G64/02;C08G64/18;C08G64/38;C08G75/00 | 主分类号 | C08G64/00 |
| 代理机构 | Miles & Stockbridge P.C. | 代理人 | Miles & Stockbridge P.C. |
| 主权项 | 1. A process for preparing a polycarbonate polyol, comprising polymerizing cyclic carbonate in the presence of DMC catalyst and chain-transfer agent, wherein the chain-transfer agent consists of polyether carbonate polyol and is prepared beforehand in a separate reaction step. | ||
| 地址 | Monheim DE | ||