immediate reaction resulting in long pot lives during which time the composition retains its processability on application of the amine trigger the metal catalyst is deblocked an begins catalyzing the cure by careful choice of the levels of metal catalyst and the types of polyols and polyisocyanates its is possible to develop formulations which have very long pot lives but which also possess very fast cure times once activated by the amine trigger with respect to the proportions of catalyst system the proportion of metal catalyst should be adjusted to be in an effective catalytic amount for the polyovpolyisocyanate reaction typically this translates into active metal catalyst concentration levels ranging from about 0 0001 to about 1 0 weight percent the proportion of complexing sulfonic acid generally is adjusted to be in excess of the metal catalyst by an equivalent ratio of greater than 2 1 sulfonic acid catalyst equivalent ratios will vary depending upon the particular metal catalyst the particular sulfonic acid complexing agent the polyol and polyisocyanate of choice and the performance requirements desired cure of the catalyzed polyurethane forming reaction mixtures can be accomplished by use of amine activators as detailed in the 39 083 patent with tertiary amines being preferred for their catalytic activity.