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Shanghai Na Long Tech Co., Ltd

Curing Agent for Water-based PU system

Payment Type:
Min. Order:
10 Barrel/Barrels
Delivery Time:
14 Days
  • Product Description
Product Attributes

Model No.YL-W6600

place of originChina

main ingredientPOLYURETHANE

Application fieldAppliance Paint, Boat Paint, Building Coating, Car Paint, Electrical Insulating Varnish, Furniture Paint, Paper Coating, Plastic Coating, Road Marking Paint, Rubber Coating

InstructionsBrush, Spray

statusLiquid Coating


ApplicationRubber Coating


Auxiliary SystemWater Type Coating Auxiliary Agent

Usage StageReaction Stage

Supply Ability & Additional Informations

Packaging200L barrel


Payment TypeL/C,T/T


Delivery Time14 Days

Packaging & Delivery
Selling Units:
Package Type:
200L barrel

YL-W6600 is a hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate(HMDI); it is used as curing agent of waterborne two-component polyurethane coating system. It can effectively improve the water resistance of paint film.



Water white or yellowish transparent liquid

Isocyanate content /%


Non volatile matter /%


HDI monomer content /%


viscosity /(cps25)


Other data

The following are typical features of YL-W6600 and should not be considered as product specifications.


Typical data

Average equivalent

about 205

relative density / g/cm325℃)


flash point /

about 160


YL-W6600 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-W6600 is a kind of curing agent suitable for water-based system. This kind of water-based system has good combination stability and chemical resistance;The curing agent has a good balance between hydrophilicity and high functionality. The water resistance of the film can be improved by introducing organosilicon chain into the hydrophilic group. It is easy to emulsify in the aqueous phase, even under the common shear force in commercial use. The coating prepared by this product can form high gloss and low haze film.

Because YL-W6600 has lower viscosity and good dispersibility, it can be directly used when polyol dispersion is mixed, or a small amount of organic cosolvent can be added in advance to control the increase of viscosity.

The waterborne two-component polyurethane coating was prepared by YL-6600. The product has the characteristics of high gloss, high hardness, good physical properties , good water resistance and chemical resistance.

YL-W6600 can also be used as crosslinking agent for water-borne polyols and most neutral aqueous polymer dispersions (such as polyurethane, polyvinyl acetate resin, polyacrylate and synthetic rubber dispersion).

After adding YL-W6600, the two-component coating for use must be used during the 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.

Looking for ideal Curing Agent for Two-component PU Coating Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Polyisocyanate Curing Agent are quality guaranteed. We are China Origin Factory of Polyisocyanate Based Hardener. If you have any question, please feel free to contact us.

Product Categories : Waterborne Polyurethane Product > Waterborne Polyurethane Hardener

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