F. Marc et al., QUATERNARY AMMONIUM HALIDES 2-TRIBUTYLSTANNYLPROPANOL - AN EFFICIENT CYCLOTRIMERIZATION CATALYST SYSTEM FOR AROMATIC ISOCYANURATE SYNTHESIS, Polymer, 35(23), 1994, pp. 5146-5147
alpha-Organotin alcohols and quaternary ammonium salts, when used join
tly, present a very high activity for the trimerization of aromatic is
ocyanates. If used separately, no catalytic activity is observed.