Patent ID: 6875243

Claim:
A catalyst suitable for the trimerization of isocyanates represented by the formula (I): [H l ⊕ X m ⊕ F n ⊖ ] p ·[R (4−q) Si(NR 1 R 2 ) q ] r (I), wherein n=m+l with 1≧m/n>0, and l≧0, p>0 and r>0, and the ratio p/r is any value, q=1 or 2, R simultaneously or independently of one another represents a saturated or unsaturated, linear or branched aliphatic or cycloaliphatic radical or aryl, aralkyl, or alkylaryl radical having from 1 to 16 carbon atoms, wherein two radicals R are optionally linked to one another via an alkylene bridge, R 1 represents R, SiR 3 or an amide radical represented by the formula (II): R 2 is R or H, wherein R 2 , when R 1 is not an amide radical, is optionally linked to R 1 via an alkylene bridge, R 3 is R or SiR 3 , and X ⊕ represents an organic onium cation represented by the formula (III): R 4 4 E ⊕ (III), where E is nitrogen or phosphorus, and R 4 represents identical or different, linear or branched aliphatic, cycloaliphatic or araliphatic radicals having from 1 to 20 carbon atoms.