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Products
HMDI
HMDI
Product Name 4,4’-dicyclohexyl methane diisocyanate
Code WANNATE®HMDI
Structure
Product Description
WANNATE®HMDI is a cycloaliphatic diisocyanate. It is colorless or pale yellow, low viscosity liquid under room temperature.
Specification
|
Appearance |
colorless or pale yellow Liquid |
|
Purity％ |
≥99.50 |
|
NCO Content％ |
≥31.80 |
|
Chromatic Number |
≤30 |
|
Hydrolysable Chlorides％ |
≤0.0010 |
|
Total Chlorides％ |
≤0.01 |
|
Density(25℃) g/cm3 |
~1.07 |
|
Viscosity(25℃) mPa·s |
~30 |
|
Freezing Point℃ |
≤25 |
Application
WANNATE®HMDI (4,4’-dicyclohexyl methane diisocyanate) is a liquid cycloaliphatic diisocyanate. It is a colorless or pale yellow liquid with low viscosity and characteristic odor. WANNATE®HMDI is raw material for polyurethanes. Polyurethane resins based on WANNATE®HMDI have good mechanical strength. They are resistant to abrasion and hydrolysis, and retain gloss and physical properties upon weathering. A unique feature of WANNATE®HMDI is its ability to form optically clear polyurethanes when combined with suitable polyol coreactants. Products based on WANNATE®HMDI may be useful in coatings for flooring, roofing, maintenance and textile applications as in cast elastomers, potting and encapsulation compounds, optical products, medical products, adhesives and sealants.
Package
200 Kg Metal drum
Storage
WANNATE®HMDI is sensitive to moisture and therefore should be stored in its sealed original containers. Water or moisture in the air reacts with the product and generates pressure. If partially filled containers are stored, it is advisable to blanket the liquid surface with dry nitrogen before sealing. At approx. 25℃, crystals will generate in WANNATE®HMDI and setting on the bottom. The product should therefore be heated to 40~50℃and homogenized before use. This process also allows the use of product which has already crystallized.
Shelf Life
WANNATE®HMDI is sensitive to moisture and must be stored in tightly sealed container. It can be stored for at least 9 months at temperatures between 0 and 30℃