PRODUCTION METHOD FOR POLYISOCYANATE HAVING BIURET STRUCTURE
作者： Mertes Harald Dr , Halpaap Reinhard Dr , Oeckl Siegfied , Mager Dieter
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摘要: PROBLEM TO BE SOLVED: To continuously produce a polyisocyanate having biuret structure and improved properties while using diisocyanate/diamine method. SOLUTION: An method provided for producing contains step of reacting an excess amount organic diisocyanate only aliphatically and/or alicyclically bonded isocyanate groups with diamine primary amino at temperature than 170 deg.C, that acid is added before or during the reaction.
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Bernd Bruchmann, Martin Reif, Hans Renz, Günter Mohrhardt, Joachim Jähme, Michael Schiessl, Werner Langer, Werner Hofscheuer, Process for producing polyisocyanates containing biuret groups from (cyclo) aliphatic diisocyanates ,(1997)
Buorufugangu Haidaa, Hansu Rentsu, Buerunaa Rangaa, Shiyutefuan Buorufu, PRODUCTION OF POLYISOCYANATE CONTAINING BIURET ,(1996)