Table 5. Formulation Used to Prepare Unmodified MDI-PU (PU-1M, PU-2M, PU-3M, PU-4M, PU-5M) from Polyol and MDI

	Formulation of non-PPOA PU
	PU-1M	PU-2M	PU-3M	PU-4M	PU-5M
Polyol / wt.%	EG / 19.1	DEG / 28.8	PEG200 / 42.7	PEG400 / 61.7	PEG600 / 69.9
MDI wt.%	80.9	71.2	57.3	38.3	30.1