PROCESS FOR THE PREPARATION OF LIGHT-COLOURED POLYISOCYANATES
摘要
The invention relates to a method for producing light-coloured polyisocyanates by phosgenation of mixtures comprising MDA and polycyclic aromatic polyamines that have o-phenylenediamine units incorporated via methylene bridges. The invention further relates to the polyisocyanate mixtures obtainable by this method.
申请公布号
HUE027504(T2)
申请公布日期
2016.10.28
申请号
HUE12775665
申请日期
2012.10.18
申请人
Covestro Deutschland AG
发明人
MUELLER, Thomas, Ernst;GUERTLER, Christoph;SCHERER-WERKE, Axel;WERSHOFEN, Stefan;VOGT, Henning;LEITNER, Walter
