CATALYTIC CURING AGENT FOR RESINS AND METHOD FOR MAKING THE SAME

摘要

Dimethylpropylamine is provided. This new amine surprisingly has a significantly less offensive odor and is considerably less prone to be impregnated in or coat the skin and clothing than are other amin es which are utilized to catalyze phenol formaldehyde and polyisocyanate resins during the production of sand cores in the "Cold Box Process". Dimethylpropylamine also cures phenol formaldehyde and polyisocyanate resins at a surprisingly rapid rate. Dimethylpropylamine is produced utilizing a reaction mixture which includes Dimethylamine and Propyl alcohol such that the molar ratio of Dimethylamine to Propyl alcohol is in the range of 0.07 to 0.5.