toyocat dt strong foaming catalyst pentamethyldiethylenetriamine overview: toyocat dt n,n,n ‘,n”,n” -pentamethyldiethylenetriamine (pmdeta), improved foam fluidity, strong foaming catalyst, mainly used for hard bubbles; the catalyst is characterized as a strong foaming catalyst while maintaining good gel properties. provides balanced catalytic water/isocyanate (foaming) and polyol/isocyanate (gelling) reactions. pentamethyldiethylenetriamine is an organic compound with the formula...