Features: Water-dispersible,, HDI/IPDI-based, Free HDI/IPDI ≤0.5%
Application: Floor Coatings, Waterbased Wood Coating, Electronics & Appliances
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WD-8660A is a water-dispersible aliphatic polyisocyanate hardener with HDI/IPDI-based chemistry.
| Specification | Value |
|---|---|
| Solid Content | 60.0 ± 2.0% |
| NCO Content | 8.7 ± 0.5% |
| Free Monomer | HDI/IPDI ≤0.5% |
| Viscosity | 1000 ± 600 mPa·s at 25°C |
Specifications are based on Dongsen’s current approved product data source.
Customer Evaluation Reference
A customer evaluated an exact-grade WD-8660A sample in a coating-film system using a reference imported resin. The evaluation included film preparation, coating-film formation and drying, and the recorded feedback was PASS. The customer reported very good standalone results for WD-8660A in that specific trial and was considering standalone use.
The source also contains numeric time references, but their measurement meaning is not defined. Those figures therefore are not interpreted as pot life, working time, drying time or any other technical performance metric.
Current Commercial Evaluation Directions
For the wider Waterbased Polyisocyanates family, current commercial evaluation directions include Electronics & Appliances with electronic product housings as the present sub-direction, Waterbased Floor Coatings, and Waterbased Wood Coating.
For reference only. Product-specific technical validation is required.
What is WD-8660A?
WD-8660A is a water-dispersible aliphatic polyisocyanate hardener with HDI/IPDI-based chemistry.
What are the main technical specifications?
Dongsen’s current product data lists 60.0 ± 2.0% solids, NCO content of 8.7 ± 0.5%, free HDI/IPDI of ≤0.5%, and viscosity of 1000 ± 600 mPa·s at 25°C.
Has WD-8660A been evaluated by a customer?
Yes. An exact-grade WD-8660A sample was evaluated in a customer’s coating-film system. The recorded feedback was PASS, and the customer reported very good standalone results in that specific trial while considering standalone use. The result is limited to the evaluated customer system and conditions.
Does the customer feedback prove an 8-hour pot life?
No. The source contains numeric time references, but the measured property is not defined. Dongsen therefore does not interpret those figures as pot life, working time, drying time, curing time or another technical performance metric.
Which application directions are currently being evaluated?
The wider WD-series commercial evaluation direction currently includes electronic product housings, waterbased floor coatings and waterbased wood coating. These are evaluation directions rather than confirmed WD-8660A application mappings.
Final suitability should be validated in the customer’s actual formulation and process conditions.
