PRODUCT NUMBER

PRODUCT NAME

20-36-2

RED OXIDE SHEET COATING

GENERAL DESCRIPTION

Pruett-Schaffer’s #20-36-2 Red Sheet Coating Primer is a VOC compliant, water based acrylic emulsion primer paint. It is designed as a low gloss fast drying metal primer for spray or roller application. The cured film exhibits very good flexibility, salt, and chemical resistance. This coating develops excellent adhesion to a number of difficult substrates such as galvanized steel, tin/lead amalgams, aluminum & stainless steel.

RECOMMENDED USES

This product was originally developed to adhere to Terne metal roofing. In addition to the above substrates it exhibits exceptional adhesion to a wide variety of other substrates including existing coatings and masonry. Use under Pruett-Schaffer 24 and 25 series finish coats. Not recommended for immersion service or for areas subject to continual solvent splash.

SURFACE PREPARATION

This coating is very forgiving of less than perfect surface preparation, so hand tool cleaning may be sufficient for some uses. At a minimum for acceptable performance, surfaces to be coated must be clean, dry and free of oil/grease, loose rust/paint, weld spatter, burning slag, dust, and chalk. Feather all rough or sharp edges. Alkyd type paints should be deglossed before being recoated. Chalky or dusty surfaces should be power washed and allowed to dry completely.

THINNING

Under normal conditions no thinning is necessary or desirable. Thin if necessary with water only, do not use organic solvents or oils. Add water a little at a time with constant gentle agitation to a maximum of 5% by volume.

APPLICATION EQUIPMENT

May be applied by brush, roller, or airless spray. Airless spray gives the best results, use spray tips with 0.015-.020 inch orifice. Use roller covers with ³/₈ to ¹/₄ inch nap. Brushes should be of polyester or nylon construction. Apply to 1-3 mils dry film build, equal to 3-7 mils wet film.

DRYING TIME

Dries to recoat in 1 to 1.5 hours at 77 ^F and 50% Relative Humidity. High humidity will prolong dry time more so than low temperatures. To speed the dry time good air movement over the work and local exhaust is recommended. Heat lamps are not suitable as they tend to trap solvent within the paint film causing water sensitivity.

CLEANUP

Clean equipment with warm soap and water before the film dries.

ENVIRONMENTAL

This product meets current air pollution regulations regarding hydrocarbon and ozone reactive emissions. It contains no lead, or chromate.

PHYSICAL PARAMETERS

VOC, ASTM D-3960: 1.01 lb/gal

WEIGHT PER GALLON, ASTM D-1475:

10.56 lbs

NONVOLATILE:

By weight: 52.1 +/- 2.0 %

By volume: 38.4 +/- 1.0%

THEORETICAL COVERAGE:

616 ft²/gallon/mil, dry film

INITIAL GLOSS, 60^, ASTM D-523:

5-20

VISCOSITY, ASTM D-562:

61-67 Krebs Units

FLASH POINT, PENSKY-MARTINS CC:

>141 ^F

TEST DATA

SALT SPRAY EXPOSURE, ASTM B-117 and D-1654, 5% SOLUTION:

160 hrs rust creepage from scribe: < 1 mm

IMPACT, ASTM D-2794:

Direct: > 80 in-lbs Reverse: > 80 in-lbs

ELONGATION, ASTM D-522:

1/4 in conical mandrel: no cracking or flaking

ANTI-SAG INDEX, ASTM D-4400:

>9 mils

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.