Extended Pot-Life Waterborne Hydroxyl Acrylic Resin | Heavy-Duty Equipment Coatings
Product Introduction
WL-AD3945 is a water-based hydroxyl-functional acrylic dispersion designed for formulation with water-based isocyanate curing agents. When crosslinked, it creates high-performance two-component polyurethane (2K PU) coatings suitable for multiple protective applications:Primers, topcoats, and clear coats,Vehicle refinishing,Heavy transport equipment finishing,Industrial protective coatings
Frequently specified as a direct replacement for BAYHYDROL A145 in waterborne polyurethane systems.
Features:
Good decorative properties
Excellent overall performance
Good adhesion to a variety of substrates
Long application period
Physical Property
|
Appearance |
Milky white liquid |
Detection method |
|
Non-volatile matter (%) |
45±1 |
GB/T 1725-2007 |
|
Viscosity (mPa·S) |
500-4500 |
GB/T 21059-2007 |
|
PH |
6.5~8.5 |
GB/T 9724-2007 |
|
Hydroxyl content |
2.9 |
Based on solids |
The viscosity of the product is affected by the pH value, as the pH value increases, the viscosity and thixotropy will increase.
Formulation Guidelines for Waterborne Hydroxyl Acrylic Systems
-
Co-solvent Recommendations
When combined with water-based isocyanate curing agents, use these co-solvents for the main resin:- DPNB
- PNB
- DGBE
- BCS
-
Curing Agent Specifications
Preferred curing agent blends:- PGDDA,PMA+DBE mixture (ratios: 1:1 or 1:2)
-
Application Warnings
-
After the A/B components are mixed, if the initial viscosity is too high, the pot life will be shortened accordingly.
- Direct metal contact may induce flash rust
-
-
Processing Limitations
Avoid resin participation in color paste grinding due to:- Process instability variables
- Potential stability degradation risks
This two-component (2K) polyurethane coating, formulated with our proprietary polyacrylic dispersion and matching water-based curing agent, delivers exceptional performance characteristics:
Extended pot life - Significantly longer than industry standards
Pinhole-free film formation - Maintains integrity at thicknesses up to 100μm
Film Property Parameters:
| Test Items | WL-AD3945 | Comp |
| Gloss @ 20°C 60°C | 86/94 | 83/90 |
| Water Resistance @ 25°C | >240 | 120 |
| Acid Resistance | >240 | 120 |
| Alkali Resistance | >240 | 48 |
| Hardness (500g,nui) | 2H | H |
| BFFT(µm) | >100 | 85 |
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.