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Shanghai Na Long Tech Co., Ltd

HMDI Based Curing Agent

HMDI Based Curing Agent

Payment Type: L/C,T/T
Incoterm: FOB,CIF
Min. Order: 10 Barrel/Barrels
Delivery Time: 14 Days

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Basic Info

    Model No.: YL-W6906

    Appearance: Liquid

    Application: Appliance Paint, Building Coating, Car Paint, Furniture Paint, Paper Coating, Plastic Coating, Rubber Coating

    Property: Water-Solution

    Auxiliary System: Water Type Coating Auxiliary Agent

    Usage Stage: Reaction Stage

Additional Info

    Packaging: 200L barrel

    Transportation: Ocean

Product Description

YL-W6800 is a hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate(HMDI) and isophorone diisocyanate; it is used as curing agent of waterborne two-component polyurethane coating system.



Water white or yellowish transparent liquid

Isocyanate content /%


Non volatile matter /%


HDI monomer content /%


viscosity /( cp, 25℃)


Other data

The following are typical features of YL-W6906 and should not be considered as product specifications.


Typical data

Average equivalent

About 336

relative density /(g/cm3, 25℃)


flash point /℃

About 40℃


YL-W6906 can be diluted with esters, ether esters, xylene and solvent naphtha 100. Generally, it has good compatibility with the above solvents, but the stability of the prepared solution must be tested. Polyurethane grade solvents should be used (moisture content less than 0.05%, and the solvent should not contain active groups such as hydroxyl or amino groups).


Yl-W6906 is a cross-linking agent suitable for water-based systems. Because of its hydrophilicity and dilution with environmentally friendly solvents, YL-W6906 is easy to disperse and emulsify in aqueous phase, even under common shear force in commercial use. Yl-W6906 can be directly used in the two-component waterborne polyurethane system. The product has a long activation period, high foam film thickness, fast hardness establishment speed and excellent chemical or solvent resistance.Although after adding YL-W6906 the two-component coatings has a longer activation period, the activation period is affected by polymer content and other components (e.g. resins, thickeners, plasticizers, etc.). In many dispersions, the end point of activation (usually several hours) does not show gelation.

Packaging and storage

Package specification

200L small mouth iron barrel, other packaging specifications can also be agreed


Please keep it away from light, cool and dry place. The storage temperature should be 5~30 ℃ to keep the package intact and sealed well. The shelf life of this product is 6 months from the date of production. It is recommended to evaluate the performance before use after more than 6 months.


This product contains polyisocyanate, so you should be very careful when using it. Skin contact with this product may cause allergic reaction; all YL-W series products are very sensitive to moisture and react with water to form carbon dioxide and insoluble urea. Therefore, the packaging container must be well sealed to avoid reaction with moisture, solvent and moisture in the container. The carbon dioxide produced will increase the pressure of the container, thus increasing its risk.

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Product Categories : Waterborne Polyurethane Product > Waterborne Polyurethane Hardener

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