专利名称：Production of trimeric polyisocyanates发明人：RICHTER FRANK, DR.,HALPAAP REINHARD,
DR.
申请号：EP09002902.6申请日：20090228公开号：EP2100886A2公开日：20090916
摘要：Preparing polyisocyanates from aliphatic and/or cycloaliphatic isocyanates,where: the fraction of isocyanurate structures and iminooxadiazinedione structures in thepolyisocyanate formed is more than 60 mol.%; the fraction of uretdione structures is lessthan 25 mol.%; and the fraction of carbodiimide structures and uretonimine structures isless than 5 mol.%, based on the sum of all the types of structure formed, comprisesreacting at least one aliphatic and/or cycloaliphatic isocyanate in the presence of aheterocyclic catalyst (I). Preparing polyisocyanates from aliphatic and/or cycloaliphaticisocyanates, where: the fraction of isocyanurate structures and iminooxadiazinedionestructures in the polyisocyanate formed is more than 60 mol.%; the fraction of uretdionestructures is less than 25 mol.%; and the fraction of carbodiimide structures anduretonimine structures is less than 5 mol.%, based on the sum of all the types ofstructure formed, comprises reacting at least one aliphatic and/or cycloaliphaticisocyanate in the presence of a heterocyclic catalyst of formula (R1-P(R3)-R2) (I). R1 :optionally cyclic, aliphatic 1-50C radical which is optionally mono- or polyunsaturatedand/or mono- or poly-1-20C alkyl- or alkoxy-substituted; and R2, R3 : together with thephosphorus atom and optionally with R1, define a cycloaliphatic 2-20C radical which is
optionally mono- or poly-1-20C alkyl- or alkoxy-substituted, polycyclic and/or mono- orpoly-unsaturated.
申请人：BAYER MATERIALSCIENCE AG
地址：51368 Leverkusen DE
国籍：DE
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