Patent ID: 6010976
Filing Date: 2000-01-04
Classification: B01D,B01J,C07C

Abstract:
A homogeneous catalyst useful for reacting urea and primary alcohols to produce dialkyl carbonates comprising a complex of an organotin compound with a high boiling electron donor atom compound comprising bidentate ligand which form 1:1 bidentate and/or 1:2 monodentate adducts with R'.sub.2 SnX.sub.2 (X=Cl, R'O, R'COO or R'COS), R'.sub.3 SnX, R'.sub.2 SnO, Ph.sub.3-n R'SnX.sub.n or Ph.sub.4-n SnX.sub.n (wherein R'=C.sub.q H.sub.2q-1 n=0, 1 or 2 and q=2 to 12) and mixtures thereof.