ShinEtsu KP-301 – Polyether-Modified Silicone Additive for Industrial Coatings
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KP-301 is a medium-molecular-weight polyether-modified silicone developed for solvent-based coating systems. It brings a smooth handling experience by improving film flow, reducing drag during application, and helping users obtain uniform coating appearance. Its stable performance across acrylic, epoxy, urethane, and fluorinated systems makes it suitable for professional coating environments where consistency and ease of application are essential.
products parameters
| Composition: | Polyether-Modified Silicone |
| Appearance: | Clear Liquid |
| Viscosity 25 °C mm²/s: | ~800–1500 mm²/s (typical) |
| Specific Gravity At 25 °C: | ~0.97 ± 0.03 |
| Packaging: | 17kg |
key features
Improved Slip – KP-301 enhances slip by lowering the friction coefficient of cured films, supported by its viscosity range of about 800–1500 mm²/s at 25°C. This measurable viscosity range allows the additive to spread evenly within solvent-borne systems, enabling stable slip improvement even at low dosage levels. It provides consistent sliding performance across acrylic, epoxy, urethane, and fluorinated resin formulations.
Leveling Aid – KP-301 improves leveling by reducing surface tension values during the wet-film stage, allowing the coating to flow into a more uniform thickness profile. Tests show decreased peak-to-valley measurements on cured films, resulting in smoother gloss appearance and fewer visible marks. The additive maintains flow balance without causing foam or surface disturbance.
Scratch Resistance – KP-301 increases abrasion resistance by reinforcing the surface integrity of cured films. Laboratory evaluations demonstrate improved Taber abrasion values when incorporated at proper dosage ranges. This added toughness helps protect coatings on metal, plastic, and composite substrates during handling, cleaning, and long-term use.
Resin Compatibility – KP-301 exhibits broad compatibility with acrylic, polyester, epoxy, urethane, and fluorinated resins, verified through miscibility and clarity testing. This compatibility ensures that the additive disperses uniformly without separation, enabling flexible formulation work in high-performance solvent-based coatings.
Solvent Stability – KP-301 maintains stable performance in solvent-borne systems, supporting uniform dispersion in common coating solvents. Tests confirm stable viscosity and no phase separation after extended storage, allowing formulators to maintain predictable additive behavior in production environments.
Coatings – KP-301 is widely used in general industrial coatings to improve surface flow and slip, resulting in smoother cured films. The viscosity range of 800–1500 mm²/s enables predictable dosing in solvent-based coating lines, supporting consistent film formation.
Paints – KP-301 is applied in solvent-borne paints where finer leveling and improved application behavior are required. Its low-dosage effectiveness between 0.01% and 1.0% allows precise addition without affecting core paint properties.
Inks – KP-301 enhances printability by reducing surface defects and improving spreading behavior in solvent-based ink systems. Its compatibility with acrylic and polyester systems enables clean, continuous ink laydown during printing.
Plastics – KP-301 is incorporated into surface-treatment coatings for plastic substrates to improve slip, mitigate sticking, and ensure more uniform appearance. Its ability to stabilize film flow supports coating adhesion and final surface quality.
Industrial Finishes – KP-301 is used in high-performance industrial finishes requiring consistent leveling, controlled slip, and durable surface characteristics. Its stable behavior in organic solvents ensures reliable processing in demanding industrial conditions.