KN8176F hydroxyl acrylic resin from KENXON is a solvent-based acrylic copolymer for polyurethane clear coat formulations. It offers high gloss, film fullness, substrate adhesion, and excellent weather resistance.
With a solids content of 75 ± 2%, KN8176F provides a resin option for formulators developing PU clear coats. In addition, the product document includes a reference formulation and coating test results to support laboratory evaluation.
High Gloss and Film Fullness
KN8176F supports clear coat formulations that require a glossy, full appearance. In the documented reference coating test, the film achieved a 60° gloss value of 98.
This result provides a useful reference for formulation development. However, it describes the tested coating system rather than the resin alone.
Therefore, evaluate gloss and appearance with your selected hardener, thinner, and application process.
Substrate Adhesion and Flexibility
The reference coating achieved 100% adhesion in the cross-cut test on sanded tinplate. It also recorded 1 mm flexibility in the bending test.
These results provide information about adhesion and flexibility under the documented conditions. In addition, the coating achieved a pencil hardness of H.
For other substrates, confirm performance through application trials. Surface preparation and the complete coating formulation can affect the final result.
Weather Resistance for PU Clear Coats
Excellent weather resistance is one of the main product features listed for KN8176F hydroxyl acrylic resin. Alongside gloss and film fullness, this property supports its use in PU clear coat development.
The supplied document does not give a weathering test duration. Therefore, discuss your exposure conditions and performance targets with KENXON when evaluating the resin.
Typical Resin Properties
| Property | Specification |
|---|---|
| Composition | Acrylic copolymer |
| Appearance | Clear and transparent |
| Viscosity at 25°C | 4–6 Pa·s |
| Acid value | 8–12 mg KOH/g |
| Solvent system | Butyl acetate / PMA |
| Color, Fe-Co scale | ≤1 |
| Solids content | 75 ± 2% |
These values describe the resin as supplied. They are separate from the coating performance results shown below.
Compatibility and Solubility
The product document lists compatibility with KN7034P, 1/2 NC, and CAB-381-2.
It also identifies solubility in the following solvents:
- Xylene
- Trimethylbenzene
- Butyl acetate
- Cyclohexanone
- Ethylene glycol monobutyl ether
- Ethylene glycol monoethyl ether acetate
Meanwhile, the document lists partial solubility or compatibility with isobutanol and n-butanol.
Before production, check the complete solvent blend and resin combination in a laboratory trial. This helps confirm suitability for your formulation.
Reference Coating Test Results
KENXON reports the following results for the reference coating system.
Test preparation conditions:
- Substrate: sanded tinplate
- Baking: 60–70°C for 180 minutes
- Conditioning: 24 hours before corrosion-related testing
| Test | Reported result |
|---|---|
| Gloss at 60° | 98 |
| Pencil hardness | H |
| Cross-cut adhesion | 100% |
| Flexibility, bending test | 1 mm |
| Flexibility after 24 hours at −20°C | 2 mm |
| Resistance to 10% H₂SO₄ for 24 hours | Pass |
| Resistance to 5% NaOH for 24 hours | Pass |
For the acid and alkali tests, the stated acceptance criteria require no blistering, peeling, or discoloration.
These results apply to the documented formulation and test conditions. Consequently, manufacturers should verify performance in their own coating system before setting finished-product specifications.
Formulation and Processing Considerations
The document provides a reference mixing ratio of:
Base component : hardener : thinner = 3 : 1 : 3–4
Use this ratio as a reference for technical discussion. The supplied document does not identify the hardener grade or specify whether the ratio is by weight or volume. Therefore, confirm both details with KENXON before preparing the coating.
First, select the intended substrate and coating requirements. Then confirm the hardener, solvent blend, mixing ratio, and curing schedule.
Finally, assess gloss, adhesion, hardness, flexibility, and chemical resistance using the complete formulation.
Packaging and Storage
KENXON supplies KN8176F in 200 kg drums.
Keep containers tightly closed in a cool, well-ventilated place. Also, store the product away from heat and ignition sources.
The stated shelf life is 24 months from the production date under the recommended storage conditions. Because the product contains solvents, refer to the Safety Data Sheet for handling precautions.
Request KN8176F Technical Information
KN8176F hydroxyl acrylic resin combines high gloss, film fullness, substrate adhesion, and weather resistance for PU clear coat formulations.
Contact KENXON to request the technical data sheet, discuss sample availability, and confirm the appropriate formulation conditions. Share your substrate, application method, and target coating properties to support the technical review.
Visit KENXON’s official website for more information.