Amine catalysts for the manufacture of isocyanurate polymers

A polymerizable composition comprising

• a) at least one polyisocyanate having isocyanate groups selected from the group consisting of aliphatically and cycloaliphatically bonded isocyanate groups, and combinations thereof;
• b) at least one compound of formula (I)
• wherein R1 and R2 are independently selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, branched C5-alkyl, unbranched C5-alkyl, branched C6-alkyl, unbranched C6-alkyl, branched C7-alkyl, and unbranched C7-alkyl,
• R5 is selected from the group consisting of propylene, butylene, pentylene, and a radical of formula (II),
• wherein A in formula (II) is selected from the group consisting of O, S, and NR3, wherein R3 is selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, butyl, and isobutyl, and
• B is independently of A selected from the group consisting of OH, SH, NHR4, and NH2, wherein R4 is selected from the group consisting of methyl, ethyl, and propyl;
• and
• c) from 50% by weight to 90% by weight of organic and/or inorganic filler based on a total weight of the polymerizable composition, the organic and/or inorganic filler optionally comprising fibers,
• wherein a ratio of isocyanate groups to isocyanate-reactive groups in the polymerizable composition is at least 8:1 and at least 80% of the isocyanate groups present in the polymerizable composition are aliphatically and/or cycloaliphatically bonded.