| 申请日期 | 2025-06-25 | 申请号 | US10298705 |
| 公开（公告）号 | US6894182B2 | 公开（公告）日 | 2005-05-17 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | Steffen Hofacker; Christoph Gürtler; Jörg Tillack | ||
| 简介 | The present invention relates to aliphatic oligocarbonate polyols prepared by the transesterification of organic carbonates with aliphatic polyols in the presence of at least one catalyst which contains i) at least one rare earth metal or compounds thereof or ii) at least one metal of group III B of the periodic table of the elements or compounds thereof or iii) mixtures of i) and ii) and to a process for preparing the same. | ||
|
您还没有登录，请登录后查看下载地址
|
客服热线：
手机版
二维码
