KR-401N is a low-molecular-weight methyl-phenyl silicone oligomer with alkoxysilyl reactive groups, developed by Shin-Etsu Chemical. Structurally identical to silicone resin but with smaller molecular chains, it features low phenyl substitution to deliver outstanding compatibility with most solvent-borne organic resins and silicone polymers. Unlike KR-401, KR-401N contains no built-in curing catalyst, allowing users to freely adjust curing speed, hardness and crack resistance by matching external catalysts.

- Appearance: Colorless transparent liquid

- Active Content: 100% (Solvent-free)

- Kinematic Viscosity (25℃): 20.0 cSt

- Specific Gravity (25℃): 1.120

- Refractive Index (25℃): 1.432

- Alkoxy Group Content: 33 wt%

- Curing Method: Room-temperature moisture curing (catalyst to be added separately)

- Cured Film Hardness: Medium

- Core Film Performance: Excellent flexibility, anti-crack, high gloss, weather resistance, flame retardant, water repellent

- Compatible Solvents: General industrial organic solvents

- Compatible Resins: Silicone resins, acrylic, alkyd, polyurethane, epoxy resins

· Low phenyl molecular design, superior miscibility with all common organic resins

· Catalyst-free formula, flexible adjustment of curing speed and film hardness on demand

· Forms ultra-flexible coating film with outstanding anti-crack property under UV aging

· Delivers high surface gloss and long-lasting water repellent performance

· Significantly upgrades resin heat resistance, anti-yellowing and outdoor weatherability

· Solvent-free 100% active oligomer, low addition dosage for obvious performance improvement

· Modifier for high-temperature industrial protective coatings

· Automotive topcoat, metal finish paint, anti-corrosion coating additive

· Wood floor varnish, furniture weather-resistant clear coat

· PCB conformal coating, electronic insulation protective coating

· Silicone resin composite modification to improve flexibility

· Acrylic, alkyd, PU resin weatherability & heat resistance enhancer

· Anti-fouling, water-repellent transparent coating for metal, glass and plastic substrates