Songhan Plastic Technology Co.,Ltd.

Dow ISONATE™ 181 MDI Prepolymer

Category Fluid , Polymer
Manufacturer Dow Chemical
Trade Name ISONATE™
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Dow ISONATE™ 181 MDI Prepolymer.pdf
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Material Notes:
ISONATE™ 181 MDI prepolymer is a modified MDI compound produced by reacting high-purity diphenylmethane diisocyanate with sufficient glycol to allow easy handling down to 80°F. This medium-viscosity, super-cooled liquid provides more rapid compatibility between isocyanates and polyols, which increases the effectiveness of catalysts present and usually results in a more easily controlled polymer reaction.Information provided by Dow
Physical Properties Metric English Comments
Density 1.221 g/cc
0.04411 lb/in³
Viscosity 770 cP
770 cP
Viscosity Measurement 5.0 - 10
5.0 - 10
[cps/mo.] Viscosity growth
Vapor Pressure <= 1.30e-8 bar
<= 0.00000975 torr
Thermal Properties Metric English Comments
Heat of Vaporization 360 J/g
155 BTU/lb
CTE, linear 1330 µm/m-°C

@Temperature 20.0 °C
737 µin/in-°F

@Temperature 68.0 °F
Specific Heat Capacity 1.80 J/g-°C
0.430 BTU/lb-°F
Thermal Conductivity 0.126 W/m-K
0.870 BTU-in/hr-ft²-°F
Boiling Point 314 °C
597 °F
Decomposition Temperature 230 °C
446 °F
Flash Point >= 177 °C
>= 351 °F
ASTM D93 Closed Cup
Chemical Properties Metric English Comments
Acid Value 0.010
HCl content, %
Descriptive Properties Value Comments
NCO Content % 23
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