发明名称 |
NCO-MODIFIED POLYOXYMETHYLENE BLOCK COPOLYMERS |
摘要 |
The invention relates to a method for producing NCO-modified polyoxymethylene block copolymers comprising the step of polymerizing formaldehyde in a reaction vessel in the presence of a catalyst, the polymerization of formaldehyde in addition taking place in the presence of a starter compound comprising at least 2 Zerewitinoff active H atoms to obtain an intermediate product. The intermediate product obtained is reacted further with an isocyanate to obtain an NCO-modified polyoxymethylene block copolymer. The invention also relates to NCO-modified polyoxymethylene block copolymers obtained by a method of this type and to the use of said copolymers for producing polyurethane polymers. |
申请公布号 |
WO2014095679(A1) |
申请公布日期 |
2014.06.26 |
申请号 |
WO2013EP76642 |
申请日期 |
2013.12.16 |
申请人 |
BAYER MATERIALSCIENCE AG |
发明人 |
MÜLLER, THOMAS ERNST;GÜRTLER, CHRISTOPH;LEITNER, WALTER;VOGT, HENNING;BARATH, GABOR |
分类号 |
C08G18/56;C08G2/28;C08G18/71 |
主分类号 |
C08G18/56 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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