KN3916F hydroxyl acrylic resin combines high gloss, good leveling, high solids content, and excellent distinctness of image. It is suitable for industrial coatings, polyurethane (PU) solid-color finishes, and clear coats.
For coating formulators, KN3916F offers a resin option for developing smooth, full-bodied finishes with clear reflections. Its technical data sheet also provides a two-component clear-coat reference formulation to support initial evaluation.
High Gloss and Clear Reflections
KN3916F is designed for coating systems that require a glossy appearance and good distinctness of image.
Distinctness of image describes how clearly a coated surface reflects surrounding objects. Together with high gloss, this property helps create a sharp, polished appearance.
These characteristics are relevant to both clear coats and PU solid-color finishes where surface appearance is a key requirement.
High Solids Content and Good Film Fullness
KN3916F has a specified solids content of 75 ± 2%. The resin also offers good film fullness, supporting the development of coatings with a rich, substantial appearance.
However, the solids content of the supplied resin is different from that of the ready-to-apply coating. The final formulation also includes the hardener, additives, and any required thinner.
Therefore, formulators should evaluate the complete coating system when setting application viscosity and film thickness.
Good Leveling for Smooth Finishes
Leveling is another key feature of KN3916F hydroxyl acrylic resin.
In the technical data sheet’s reference coating test, the film passed the visual leveling assessment. The reported surface was flat and smooth, without craters.
In addition, the film passed the visual assessment for fullness and distinctness of image. These results support its evaluation in formulations where both gloss and surface smoothness matter.
Applications of KN3916F Hydroxyl Acrylic Resin
The product data sheet identifies three main applications:
- Industrial coatings
- PU solid-color coatings
- Clear coats
It also includes a two-component clear-coat reference formulation using KN3916F with an N3390 hardener.
This reference provides a starting point for formulation trials. The final coating should be evaluated with the intended substrate, application process, and curing conditions.
Typical Resin Properties
| Property | Specification |
|---|---|
| Composition | Acrylic copolymer |
| Appearance | Clear and transparent |
| Solids content | 75 ± 2% |
| Viscosity at 25°C | 3–5 Pa·s |
| Acid value | 6–12 mg KOH/g |
| Color, Fe-Co scale | ≤1 |
| Solvent | Butyl acetate (BAC) |
These properties describe the supplied resin. Finished-coating performance depends on the complete formulation and processing conditions.
Reference Clear-Coat Performance
The technical data sheet reports the following results for its reference coating system.
| Test item | Reported result |
|---|---|
| Gloss at 60° | 100 |
| Pencil hardness | H |
| Cross-cut adhesion | 100% |
| Flexibility, bend test | 1 mm |
| Film fullness and distinctness of image | Passed |
| Leveling | Passed; flat and smooth, without craters |
The listed substrate is sanded tinplate. The document includes a baking schedule of 65°C for 60 minutes, as well as an air-drying option. For corrosion-resistance testing after baking, it specifies a further 24-hour conditioning period.
These results apply to the reference coating system and the stated test conditions. They are not standalone properties of the liquid resin or guaranteed results for every formulation.
Formulation and Curing Evaluation
When evaluating KN3916F, consider the relationship between appearance, application viscosity, and curing conditions.
The supplied reference formulation combines the resin with additives, solvents, and a separate hardener component. It can help formulators begin laboratory trials for a two-component clear coat.
During development, assess the coating on the intended substrate. Check gloss, leveling, adhesion, hardness, and film appearance under the selected curing schedule.
This approach helps determine whether the formulation meets the requirements of the final application.
Packaging and Storage
KN3916F is supplied in 200 kg drums.
Keep containers tightly closed and store them in a cool, well-ventilated place away from heat and ignition sources. The product data sheet states a shelf life of 24 months from the date of manufacture under the recommended storage conditions.
As a solvent-containing resin, KN3916F requires appropriate handling. Refer to the Safety Data Sheet for detailed handling and safety information.
Discuss KN3916F for Your Coating Formulation
Looking for a hydroxyl acrylic resin for high-gloss industrial coatings, PU solid-color finishes, or clear coats?
Contact KENXON to request the KN3916F technical data sheet and discuss your formulation requirements. Share your intended application, substrate, and curing conditions so our team can support your product evaluation.