Catalysts and process for preparing polyisocyanates containing isocyanurate groups and their use

摘要

New complex compounds (I) of organic quaternary ammonium or phosphonium fluorides (II) and organo-mono- or diaminosilanes (III) in any ratio are claimed. New complex compounds (I) of organic quaternary ammonium or phosphonium fluorides (II) and organo-mono- or diaminosilanes (III) are of the formula: n = m + l; m/n = over 0 and up to 1, preferably 0.1-1, especially 0.25-l; l = 0 or more; p, r = over 0; p/r = any value, preferably 0.01-100, especially 0.1-10; q = 1 or 2; R = a 1-16 C (un)saturated, linear or branched aliphatic, cycloaliphatic, aryl, aralkyl or alkylaryl group and 2 R groups may be linked by an alkylene bridge; R1 = R, SiR3 or an amide group -CO-N(R)-R3; R2 = R or H and may be linked to R1 by an alkylene bridge if R1 is not an amide group; R3 = R or SiR3; X+ = an organic onium cation R44E+; E = N or P; R4 = optionally different 1-20 C linear or branched aliphatic, cycloaliphatic or araliphatic groups Independent claims are also included for the following: (1) Isocyanate trimerization catalysts (IA) obtained by reacting (II) and (III) in p/r molar ratio; (2) Preparation of (I) at -20 to 200degreesC, optionally in the presence of a solvatation agent; (3) Polyisocyanates containing isocyanurate groups prepared by trimerization of organic mono-, di- or polyisocyanates induced by (I) or (IA) as catalyst.