发明申请
US20200071449A1 PROCESS FOR PRODUCING (CYCLO)ALIPHATIC POLYCARBONATE POLYOLS HAVING LOW REACTIVITY
审中-公开
基本信息:
- 专利标题： PROCESS FOR PRODUCING (CYCLO)ALIPHATIC POLYCARBONATE POLYOLS HAVING LOW REACTIVITY
- 申请号：US16468507 申请日：2017-12-18
- 公开(公告)号：US20200071449A1 公开(公告)日：2020-03-05
- 发明人： Michael LUDEWIG , Stefan SOMMER , Holger BREUER , Michael Grahl
- 申请人： COVESTRO DEUTSCHLAND AG
- 优先权： EP16205050.4 20161219
- 国际申请： PCT/EP2017/083354 WO 20171218
- 主分类号： C08G18/44
- IPC分类号： C08G18/44 ; C08G64/30 ; C08G64/02 ; C08G18/76
摘要：
The present invention relates to a process for producing (cyclo)aliphatic polycarbonate polyols comprising the steps of a) reaction of at least one (cyclo)aliphatic polyol and at least one alkyl carbonate in the presence of at least one basic catalyst and b) neutralization by addition of at least one organic sulfonic acid having a molecular weight of 250 to 1000 g/mol and at least one branched or unbranched alkyl substitution having at least four carbon atoms, wherein step b) is performed after step a).
公开/授权文献:
IPC结构图谱:
| C | 化学；冶金 |
| --C08 | 有机高分子化合物；其制备或化学加工；以其为基料的组合物 |
| ----C08G | 用碳—碳不饱和键以外的反应得到的高分子化合物 |
| ------C08G18/00 | 异氰酸酯类或异硫氰酸酯类的聚合产物 |
| --------C08G18/06 | .与具有活性氢的化合物 |
| ----------C08G18/08 | ..工艺过程 |
| ------------C08G18/30 | ...低分子量化合物 |
| --------------C08G18/42 | ....在主链中具有羧基或碳酸酯基的缩聚物 |
| ----------------C08G18/44 | .....聚碳酸酯 |