Advantages of the catalysts of this invention include a catalyst having the ability to delay the initial reaction between an isocyanate and an active hydrogen containing compound, catalyzed by an organometallic; the ability to form a polyurethane molding composition having excellent ?ow during initial reacton by extending the cream and gelation time and yet end up with a desirable rise and cure time which often is comparable to those obtained with conventional catalyst
compositions; and the ability to form polyurethane compositions which are substantially free of the characteristic amine odor found heretofore;