hdi (hexamethylene diisocyanate) is a kind of aliphatic diisocyanate, which is a low-viscosity, colorless or yellowish liquid at room temperature, with a pungent odor
1,4-phenylene diisocyanate is a white flaky solid. it has a compact and highly symmetrical molecular structure. the polyurethane made from ppdi performs excellent properties because of its tight hard segments and high microphase-separation
chdi (1,4-diisocyanatocyclohexane) is a kind of aliphatic diisocyanate, which is a low-viscosity, colorless or yellowish liquid at room temperature, with a pungent odor
h200 is colorless or yellowish liquid at room temperature
h300 is colorless or yellowish liquid at room temperature
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