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Curing Agent for Waterborne two-component PU Coating

Curing Agent for Waterborne two-component PU Coating

    Payment Type: L/C,T/T
    Terms of Trade: FOB,CIF
    Min. Order: 10 Barrel/Barrels
    Delivery Time: 14 Days
    Packaging: 200L barrel
    Transportation: Ocean

Basic Info

Model No.: YL-W6500

Product Description

YL-W6500 is a hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate(HMDI); it is used as curing agent of waterborne two-component polyurethane coating system.



Water white or yellowish transparent liquid

Isocyanate content /%


HDI monomer content /%


Viscosity /(cps, 25℃)


Other data

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


Typical data

Average mol wt

About 565

Relative density /g/cm325℃)


Flash point /

About 165


Yl-W6500 is compatible with ester, ether ester, xylene and naphtha 100 solvents; however, solubility and compatibility should be tested for each solvent. Only polyurethane grade solvents should be used. The water content shall not exceed 0.05%.


Yl-W6500 is a crosslinking agent suitable for water-based system. Although the hydrophilicity of the curing agent is relatively weak, it is easy to emulsify and disperse in aqueous phase due to its very low viscosity; The coating prepared with this product has good matting property and physical and chemical properties, so it is recommended to be used in semi gloss or flat waterborne coating system.

Yl-W6500 can also be used as crosslinking agent of water-borne polyols and crosslinking agent of most neutral water-borne polymer dispersions (such as polyurethane, polyvinyl acetate resin, polyacrylate and synthetic rubber dispersion) to improve their properties. After adding YL-W6500, the two-component coating to be used must be used within 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 period (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.

Shanghai Na Long Tech Co., Ltd

  Shanghai Na Long Tech Co., Ltd is a company specialized in various construction chemicals including dry mortar additives, concrete admixture and Other specialties etc. With more than 15-year industry experience and strong technical competence, Na Long can support for construction solutions and technical support to solve the application problems and product optimization. The company is based in Shanghai, economy and technology center of China, branching out to various partnership chemical plants across North China, South China and East China. Owe to advanced quality management knowledge, product innovation and brilliant understanding of construction industry, Na Long ensures the product supply excellent stability and optimized performance.

Company Info

  • Company Name: Shanghai Na Long Tech Co., Ltd
  • Product/Service: Construction Chemical , Dry Mortar Additive Solution , Construction Material Solutions , Chemical Additives for Construction Material , Concrete Admixture , Technology Support for Construction Material
  • Year Established: 2018
  • Export Percentage: 71% - 80%
  • No. of R&D Staff: 5 -10 People
  • No. of QC Staff: 5 -10 People
  • OEM Services Provided: yes
  • Factory Size (Sq.meters): 5,000-10,000 square meters
  • Contact Person: Ms. Sophie Wu
  • Tel: 86-0-19916751702
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