application areas: polyurethane rigid foam, flexible foam, self-skinning, shoe materials characteristics: delayed, heat-sensitive function: prolonging emulsion time, prolonging drawing time use system: mdi/tdi/papi/mixed isocyanate dy-215 special amine delayed gel catalyst, providing excellent pre-flow, delaying drawing time, not affecting post-curing, accelerating product release. dy-225 diol solution of modified bis(dimethylaminoethyl) ether, delayed foaming catalyst, delayed emulsification time,...