Toluene diisocyanate manufacturer Knowledge Covestro (formerly Bayer) Desmodur H hexamethylene diisocyanate HDI 822-06-0

Covestro (formerly Bayer) Desmodur H hexamethylene diisocyanate HDI 822-06-0

Covestro (formerly Bayer) Desmodur H hexamethylene diisocyanate HDI 822-06-0

Abbreviation

HDI

Molecular formula

C8H12N2O2

Molecular weight

168.19

CASNo.

822-06-0

Product Features

Project

Value

Appearance

None Color or light yellow liquid

Boiling point@101kPa

255 ° C

Molecular mass

168.2

Freezing Point

-67 ℃

NCO%

49.7%~49.9%

Viscosity@25

3mPa · s

Relative density

1.05

Flashpoint (open cup)

135 ℃

Refractive index@20

1.4530

Specific heat capacity@25

1.75J/ ( g · K )

Boiling point@0.67kPa

@1.33kPa

@2.67kPa

112 ℃

120~125 ℃

140~142 ℃

Vapor pressure@20

1.3~1.5Pa

Hydrolytic chlorine

≤0.03%

Purity

≥99.6%

Application
HDI is an aliphatic isocyanate, and the resin made of it has obvious yellowing resistance.
Derivatives of HDI can be used as isocyanate curing agents, divided into three types: HDI monomer-TMP, HDI biuret, and HDI trimer. They are curing agents for high-end polyurethane adhesives and coatings. In particular, trimer as a curing agent has low viscosity and is easy to store. The products made of it have excellent heat resistance, light resistance, weather resistance and solvent resistance.

Packaging
200kg/ barrel

:0.0000pt; text-align:justify">Purity

≥99.6%

Application
HDI is an aliphatic isocyanate, and the resin made of it has obvious yellowing resistance.
Derivatives of HDI can be used as isocyanate curing agents, divided into three types: HDI monomer-TMP, HDI biuret, and HDI trimer. They are curing agents for high-end polyurethane adhesives and coatings. In particular, trimer as a curing agent has low viscosity and is easy to store. The products made of it have excellent heat resistance, light resistance, weather resistance and solvent resistance.

Packaging
200kg/ barrel

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