In polyurethane synthesis reaction how to avoid gelation of reaction mixture after addition of diisocyanate?

I have tried it with MDI,TDI,IPDI,HDI and Polyols like PEG,PPG,PCL with 1000 & 2000 g/mol molecular weight & DBTDL as a catalyst. I have use solvents like Acetone, DMF & THF. Whole...

06 May 2025 2,830 1 View