PRODUCT NUMBER

PRODUCT NAME

22-18

CLEAR WATERBASED EPOXY SEALER

GENERAL DESCRIPTION

Pruett-Schaffer’s #22-18 Clear Epoxy is a two component, amine cured epoxy for use where good chemical resistance is needed. It is formulated for a high gloss with good gloss retention. #22-18 can be spray applied or it can be brushed or rolled. It exhibits excellent adhesion over a wide variety of substrates, and has very good abrasion, corrosion, water and chemical resistance in a low odor water reducible system.

RECOMMENDED USES

Use to protect concrete floors from degrading in aggressive environments where chemicals, salt, water, fuels, and oils are present. #22-18 may be used on new, cured concrete or existing concrete. Formulated to be FDA approved for incidental contact with food & allow high film build in one pass to protect hard to cover sharp edges. May also be used as an encapsulation coating. This formula will chalk on long term exposure to sunlight.

SURFACE PRPARATION

For best results on concrete floors, a Blastrac sandblasting and vacuuming system is recommended. However, water-blasting, combined with acid etching, will provide an adequate surface profile for adhesion. In any case, the concrete must be cured and loose laities must be removed.

#22-18 can be applied over tightly adhering existing coatings. Degreasing and hand tool cleaning, power washing, brush blasting, sanding, or a combination of these methods may be acceptable for use over existing coatings.

All surfaces to be coated must be clean, dry, and free of oil and grease, loose rust and paint, weld spatter, burning slag, dust, and chalk.

MIXING INSTRUCTIONS

Mix 3.1 parts by volume #22-18-A with 1 part 22-18-B Hardener. Mix at slow speed to avoid entraining air into the paint. Use at once, there is no induction time. Do not reuse previously used mixing containers; partially cured material will greatly accelerate the cure of the freshly mixed paint resulting in dramatically reduced pot life.

THINNING

Thin if necessary for spraying, thin with water. Add a little at a time to the mixed system with constant gentle agitation to a maximum of 5% by volume. If product has “set to touch” it may be necessary to use a solvent like Xylol to remove it before totally cured.

APPLICATION EQUIPMENT

May be applied by brush, roller or airless spray. Airless spray gives the best results, use .015-.020 inch tip size. Apply mils wet film thickness to yield 3-4 mils dry film thickness. Brushes should be of polyester or nylon construction.

CURE TIMES & TEMPERATURES

Cures set-to-touch in 1.0 hours at 77 ^F. Allow 7-10 days cure at 70 ^F before placing into severe service, longer if ambient temperature is lower. Recommended minimum application temperature is 50 ^F.

CLEANUP

Clean equipment with water while wet. Use xylol or toluol before the film cures if no longer water -soluble.

ENVIRONMENTAL

This product meets current air pollution regulations regarding hydrocarbon and ozone reactive emissions. #22-18 has a very low VOC and is non-HAP. It is compliant for the architectural maintenance industry. 322-18 contains no lead, chromate, or zinc.

PHYSICAL PARAMETERS

VOC, ASTM D-3960: 1.51 lb/gal mixed system

WEIGHT PER GALLON, ASTM D-1475:

8.86 lbs mixed system

NONVOLATILE, mixed system:

By weight: 55.6 +/- 2.0 %

By volume: 41.9 +/- 1.0%

THEORETICAL COVERAGE:

672 ft²/gallon/mil, dry film

INITIAL GLOSS, 60^, ASTM D-523:

85 min.

VISCOSITY, mixed system, ASTM D-562:

Krebs Units 80-100 KU

POT LIFE, mixed in 4 gal lots:

hrs @ 77 ^F; 8

FLASH POINT, TAG CC: over 141 deg F

THIS INFORMATION RESULTS FROM TESTS CONDUCTED IN A LABORATORY UNDER LABORATORY CONDITIONS. DIFFERENT RESULTS MAY BE OBTAINED IN COMMERCIAL USE OF THIS PRODUCT UNDER FACTORY OR FIELD CONDITIONS. PRUETT-SCHAFFER MAKES NO WARRANTY CONCERNING THE SUITABILITY OF THIS PRODUCT FOR THE END USE CONTEMPLATED BY THE BUYER, EXCEPT THAT THE PRODUCT SHALL BE IN COMPLIANCE WITH THE TECHNICAL SPECIFICATIONS PRESENTED HEREIN.