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728 POLYURETHANE CO​ATING (N-TYPE)

POLYURETHANE COATING (N-TYPE)

PRODUCT NUMBER

728

TYPE

A two-pack, non-yellowing polyurethane coating based on acrylic resin, polyol resin and isocyanate hardener with weather resistant pigment.

USES

Used for wood products, vehicle, metal products and FRP.

CHARACTERISTICS

1. High gloss with smooth appearance.

2. Excellent weather resistance with good gloss and color retention.

3. Excellent resistance to acids, alkalis, oils and salts.

4. Excellent adhesion, hardness and abrasion resistance.

FINISH

High gloss

COLOR

Red

HIDING POWER

Above 10.0 m2/L (mixture, depending on the color)

MASS DENSITY

Above 1.0 Kg/L (mixture)

VISCOSITY

60~80 KU (mixture, 25℃)

DRYING TIME

Set-to-touch 1 hr. Dry hard 6 hrs. (25℃).

OPTIMUM FILM THICKNESS

Wet 60 microns Dry 30 microns

THEORETICAL COVERAGE 63.0 m2/Gal 16.7 m2/L 15.2 m2/Kg
OVERCOATING INTERVALS Min. 4 hrs. Max. 6 months

MIXING RATIO

Base : hardener = 84 : 16 (by wt.)

NON-VOLATILE CONTENTS

Above 55% (mixture)

POT LIFE 4 hrs. (mixture, 25 ℃ )
HEAT RESISTANCE Continuous 93℃ Intermittent 121℃
THINNER No.736 Polyurethane Thinner
THINNING RATE 10~20% (cleaning tools excluded)
PRECEDING COATS No.711 Polyurethane Sanding
No.733 Polyurethane Zinc Chromate Primer (for metal) Epoxy Primers Series
STORAGE SHELF LIFE Minimum 1 year under normal storage conditions.
APPLICATION METHOD Spray, Brush, Roller
NOTE 1. Mix base and hardener according to the mixing ratio and stir thoroughly.
2. Adhered moisture, grease, dust on substrate must be removed thoroughly.
3. Please use special thinner for dilution to avoid causing bubbles or pinholes.
4. Hardener cover must be tightly closed to avoid reaction with moisture in air to form bubbles and gelation.
5. Mixture of base and hardener must be used up within pot life.
6. Strictly controlling application, not to exceed 50 microns per coat, to avoid bubbles formation.
7. All equipments must be cleaned immediately after use.
8. The lacquer sanding is not suitable as a primer for this paint.
9. Avoid applying paint in rainy or the moisture above 85% RH, otherwise the adhesion will be affected by moisture of substrate and the paint film will be loss its gloss.