Product Specifications

Viscosity:	Flash Point:	Density (lb/gal):	Solid (% by weight):	Solid (% by volume):	Shelf Life (months):
Zahn #3 signature cup 22 sec at 77°F	25 °F	8.36	48%	39%	12

Product Description

Chiaro HS Clear Sealer is a high solids sealer to be used with the Chiaro Polyurethane topcoat. Chiaro is formulated as an ultra clear polyurethane. Chiaro is a highly versatile polyurethane coating with excellent physical properties and chemical resistance. Extremely durable with a great finish feel. Chiaro has a superior tolerance to impact resistance.

Uses

Great choice of sealer for high build system and for surfaces that require extra chemical resistance. Uses include interior marine, cabinetry, store fixture and musical instruments.

Environmental Data (as supplied)

VOC less exempt lb/gal:	VOC lb/gal:	VOC less exempt g/l:	VOC g/l:	VOC lb/lb Solid:	VHAPs lb/lb Solid:
<4.35	<4.35	<521	<521	<1.09	<0.01

Note:

N/A

Application Data

Suggested Uses:	Mixing Ratio:	Pot Life:	Application Viscosity:	Reducer:	Retarder:	Clean-up Solvent:	Recommended Wet Film:	Coverage:
Wood Finish	100 Parts 436-2320 with 50 Parts 876-9068 (by volume)	3 - 4 Hours depending on temperature and humidity.	Zahn #2 signature cup 22-25 seconds	Fast 803-1410, Medium 803-1409, or slow 803-1408 if needed	800-5328 3-5% by volume	800-5500 Acetone	3 to 5 wet mils	N/A

Note:

MAXIMUM DRY FILM THICKNESS OF THE SYSTEM MUST NOT EXCEED 6.0 DRY MILS

Surface Preparation

Substrate must be sanded using 120, 150 or 180 grit paper prior to staining or coating. Sealer should be sanded with 280/320 grit paper prior to being coated. The sealer should be coated within eight hours of being sanded. When recoating, the previous coat of Chiaro must be sanded and the next coat applied within eight hours.

Stain systems used under Chiaro are formulated to develop excellent grain definition. AkzoNobel recommends using Promatch® W/B Monocolor Spray Stains 824-50XX, Promatch Aqua Stains 824-51XX, Promatch Dye Stains 890-85XX or Promatch C-Mix Wipe Stains 825-90XX, 825-91XX can be used within limitations. Consult your representative for more information.

General Information

The mixed product contains 876-9068, an isocyanate based co-reactant. Please follow all precautions associated with handling and use of those materials. Refer to MSDS for detail information.

Oil stains must be avoided because they will interfere with the adhesion. When coating exotic woods (Teak, Rosewood, etc.) a barrier coat (tie-coat) should be applied before the sealer or base coat. See Product data sheet for 401-033 Isolante.

Product must be thoroughly stirred before adding the hardener in the recommended ratio. The viscosity of the product should be monitored after mixing with the hardener. The relative humidity in the application and drying room should not exceed 75% for maximum coating performance.

THE CUSTOMER IS RESPONSIBLE FOR FOLLOWING THE RECOMMENDED APPLICATION PROCEDURES. FAILURE TO ADHERE TO THE RECOMMENDATIONS GIVEN IN THIS DATA SHEET WILL LIKELY RESULT IN UNSATISFACTORY FILM APPEARANCE OR FILM FAILURE. THE COMPLETE COATING SYSTEM SHOULD BE CHECKED FOR REQUIRED PROPERTIES PRIOR TO THE START-UP OF PRODUCTION.

Drying Times

Room Temperature (68°F)

Tack Free Time:	Dry to Sand:	Dry to Stack:
15 minutes	1 hour	24 hours

Forced Drying Schedule (122°F)

Tack Free Time:	Dry to Sand:	Dry to Stack:
15 minutes	15 minutes	15 minutes

Note:

N/A

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Dry times are greatly affected by film build, porosity of substrate, air movement as well as heat and humidity. Temperatures are based on actual board temperature. This may vary depending on length of time for boards to reach these temperatures. Minimum curing temperatures of 64°F/18°C must be maintained throughout the curing cycle to achieve the film integrity as stated in product features.