KINJOYA PU PRIMER is a single-component, low-odor, low-VOC polyurethane coating that adheres firmly to clean, dry concrete, plywood, and metal. It is typically used before applying a polyurethane topcoat to enhance the adhesion strength between the polyurethane coating and the substrate.
Industrial Facilities: Anti-corrosion and decoration for steel bridges, machinery, pipelines, and storage tanks.
Building Waterproofing: Waterproof layers for roofs, basements, and other damp surfaces.
Wood and Metal: Protective coatings for furniture, doors, windows, and metal surfaces to enhance weather resistance and scratch resistance.
Special Scenarios: Long-term protection for ship decks, chemical equipment, and outdoor concrete structures.
Excellent Adhesion: The paint film bonds firmly with the substrate, providing strong adhesion.
Good Corrosion Resistance: Effectively resists acids, alkalis, solvents, and industrial atmospheric corrosion.
Good Wear Resistance: The paint film has high hardness and strong impact resistance.
Easy Application: Single-can design, ready to use upon opening, suitable for brushing, rolling, or spraying.
Surface Preparation: Ensure the substrate is clean and dry, free of oil, rust, or peeling old paint; concrete should be smooth, with cracks repaired beforehand.
Construction Process:
a. Stir slightly before use, avoiding vigorous shaking to prevent air bubbles.
b. Airless spraying (efficient) or brushing/rolling (for small areas).
c. Apply in multiple layers, each about 0.5mm thick, with intervals based on surface dryness.
Environmental Requirements: Humidity ≤85%, temperature 0-35℃; avoid construction in rain, snow, or high humidity.
Curing Conditions: Naturally cure with moisture; full curing requires 7 days (25℃), and avoid impacts from heavy objects during this period.
Store in a cool, dry place, protected from the action of sunlight and rain.
Do not store at temperatures below 41℉(5°C) or above 104℉（40℃）.
All information is nominal values at the time of manufacturing, and related performance properties are based on the "as manufactured" condition. Actual values may vary depending on application methods, substrate conditions, environmental factors, and specific product configurations.
