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1.发明公开
公开(公告)号：EP4438646A1
公开(公告)日：2024-10-02
申请号：EP23164709.0
申请日：2023-03-28
发明人： LATORRE MARTINEZ, Irene Cristina , LAEMMERHOLD, Kai , WOODS, Laura , WESTHUES, Stefan , YOGENDRA, Sivathmeehan , MOVAHHED, Sohajl , LUDEWIG, Michael , GRAHL, Michael , WOLF, Aurel , BORN, Ralph-Georg , GUERTLER, Christoph , AMMENHÄUSER, Robin , KLEIN, Patrick , GLAßNER, Mathias
CPC分类号： C08G18/003 , C08G18/022 , C08G18/7671 , C08G18/1883 , C08G59/066 , C08G18/168
摘要： The invention is related to a process for producing epoxy-group terminated and isocyanurate-group containing polyoxazolidinones comprising reacting at least one monomeric polyisocyanate compound (A) with at least one polyepoxide compound (B) in the presence of at least one catalyst (C), at a molar ratio of the epoxy groups of the at least one polyepoxide compound (B) to the isocyanate groups of the at least one monomeric polyisocyanate compound (A) of ≥ 2:1 to ≤ 25:1, wherein the at least one monomeric polyisocyanate compound (A) is added to the at least one polyepoxide compound (B) over a period of ≥ 1 minute to ≤ 50 minutes at a reaction temperature (TR) of ≥ 105°C to ≤ 160° C. The invention is also related to the resulting epoxy-group terminated and isocyanurate-group containing polyoxazolidinones, as well as to a composition at least comprising the resulting epoxy-group terminated and isocyanurate-group containing polyoxazolidinones and compounds having at least one group that is reactive towards terminal epoxy-groups, furthermore to the process for the preparation of said composition, the use of this composition as or in a coating formulation, to a coating formulation comprising at least this composition, to a process for coating a substrate comprising the step of applying of this coating formulation onto the substrate, and to the correspondingly coated substrate.
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