| 发明名称 |
POLYETHERCARBONATE-POLYOXYMETHYLENE BLOCK COPOLYMERS |
| 摘要 |
The present invention relates to a method for producing polyethercarbonate-polyoxymethylene block copolymers, comprising the step of polymerizing formaldehyde, wherein formaldehyde is polymerized in the presence of a polyethercarbonate having at least one Zerewitinoff-active H atom, obtaining an intermediate product. The obtained intermediate product can be further reacted with a cyclic carboxylic acid ester or carbonic acid ester, a cyclic anhydride, an epoxide, and/or an isocyanate, wherein a hydroxyl- or carboxy-functional or NCO-modified polyethercarbonate-polyoxymethylene block copolymer is obtained. The present invention further relates to polyethercarbonate-polyoxymethylene block copolymers that can be obtained by means of such a method and to the use of same to produce polyurethane polymers. |
| 申请公布号 |
US2016130407(A1) |
申请公布日期 |
2016.05.12 |
| 申请号 |
US201414895535 |
申请日期 |
2014.06.10 |
| 申请人 |
Covestro Deutschland AG |
发明人 |
Mueller Thomas Ernst;Guertler Christoph;Leitner Walter;Vogt Henning;Barath Gabor;Krautschick Mario |
| 分类号 |
C08G81/00;C08J9/00;C08G18/08 |
主分类号 |
C08G81/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A process for preparing polyethercarbonate-polyoxymethylene block copolymers, comprising polymerizing formaldehyde, in the presence of a polyethercarbonate having at least one Zerewitinoff-active hydrogen atom. |
| 地址 |
Leverkusen DE |
