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PRODUCT NUMBER	PRODUCT NAME
25-27925-HB	WHITE WATER BASED ACRYLIC PRIMER

GENERAL DESCRIPTION Pruett-Schaffer’s #25-27925-HB White Primer is an air drying, water based acrylic emulsion paint. It is designed as a low gloss, spray-, brush-, or roller- applied enamel for general use. The cured film exhibits very good salt and chemical resistance. The coating allows high film build without sags, and the desired dry film thickness can be applied in one coat. It can be used as a primer or low gloss intermediate or topcoat. RECOMMENDED USES This product is recommended for general equipment and building maintenance. It exhibits exceptional adhesion to a wide variety of substrates including minimally prepared cold rolled steel, galvanized steel, masonry, brick, existing coatings, and even aluminum without pretreatment. Use where long term exterior durability and flexibility is required. Not recommended for immersion service or for areas subject to continual solvent splash or fume. SURFACE PREPARATION For severe service, substrates should be blasted to SSPC-SP-6, with a 1 mil blast profile. Feather all rough or sharp edges. This coating is very forgiving of less than perfect surface preparation however, so hand tool cleaning may be sufficient. At a minimum for acceptable performance, all surfaces to be coated must be clean, dry, and free of oil/grease, loose rust/paint,	weld spatter, burning slag, dust, and chalk. De gloss previously painted surfaces for best adhesion. THINNING Under normal conditions no thinning is necessary or desirable for brushing or rolling. Thin if necessary for spraying 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. Brushes should be of polyester or nylon construction. Use roller covers with ^3/8 to ^1/4 inch nap. Use a .015-.020 inch gun tip size for spraying. Do not apply with a cup type spray gun. Apply 6.5 mils wet film thickness to obtain the recommended dry film thickness of 3 mils per coat. 3-4 mils dry film total thickness is recommended for best performance. DRYING TIME Dries to recoat in 1 to 1.5 hours at 77 ^0F 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. Run ethyl alcohol through spray guns after cleaning to prevent corrosion of steel parts. 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: .56 lb/gal WEIGHT PER GALLON, ASTM D-1475: 11.93 lbs NONVOLATILE: By weight: 62.5 +/- 2.0 % By volume: 46.1 +/- 1.0% THEORETICAL COVERAGE: 741 ft^2/gallon/mil, dry film (247@3mils) INITIAL GLOSS, 60^0 , ASTM D-523: 20-40 VISCOSITY, ASTM D-562: 85-90 Krebs Units FLASH POINT, PENSKY-MARTINS CC: > 141 ^0F 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: > 120 in-lbs Reverse: > 120 in-lbs ELONGATION, ASTM D-522: 1/4 in conical mandrel: no cracking or flaking
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.

QC IDENTIFIER: E26

REVISED 05-03-2005