binder content for tma testing a sample was fogged as above but after the samples were cured on the press they were subject to tma analysis the recovery loss on ignition loi and tma results are reported in table 3 the recovery testing of binders formulated with 50 50 and 55 45 pre reacts demonstrate that the inventive binders recover as well as a binder formulated from a 60 40 pre react made from resin z trimethylamine is a reaction by product of formaldehyde and urea tma has an unpleasant fishy odor the concentration of urea in the pre react ph of the resin and formaldehyde to urea ratio are important factors maintaining the amount of tma in the final product to an acceptable level pre reaction is employed to extend the phenolic resin by reacting urea with the free formaldehyde with the present invention the pre reaction effectively reduces the amount of free formaldehyde to less than 1 wt therefore the higher the concentration of free formaldehyde in the phenolic resin starting material the higher the amount of urea needed to reduce the level of free formaldehyde in the phenolic binder or pre react to the desired level of less than 1 wt the use of high urea concentration increases the probability of forming tma the 50 50 extended pre reacts may potentially produce more tma due to.