PRODUCT NUMBER

PRODUCT NAME

26-11-4

GRAY WATER BASED ALKYD PRIMER

GENERAL DESCRIPTION

Pruett-Schaffer’s #26-11-4 Gray Primer is an air drying, water reducible alkyd paint. The water based alkyd in #26-11-4 is modified with phenolic resin to provide more chemical resistance. It is also formulated to adhere to slightly oily substrates. #26-11-4 is designed for use as a primer or semi-gloss DTM finish coat for metal substrates. The cured film exhibits good flexibility and corrosion resistance, and excellent adhesion to a wide variety of metal substrates.

RECOMMENDED USES

This product was developed as a primer for structural steel. It can be used on equipment and machinery, sheet and tube stock, shelving, axles, bins, and tanks as a primer or low gloss finish coat. It’s fast drying and exhibits good application characteristics and adhesion to a wide variety of substrates including minimally prepared cold rolled steel, castings, forgings, aluminum, and existing coatings. Not recommended for immersion service or for areas subject to temperatures in excess of 300 ^F. The paint is not flammable and has very low toxicity.

SURFACE PREPARATION

Apply as a direct-to-metal topcoat or as a primer. For best results in DTM service, substrates should be blasted to SSPC-SP-6 minimum, with a 1-mil blast profile. Feather all rough or sharp edges. This coating is very tolerant of less than perfect surface preparation, so chemical cleaning, water blasting, or even hand or power tool cleaning may be sufficient, depending on the level of service required. At a minimum for acceptable performance, 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.

THINNING

Under normal conditions no thinning is necessary or desirable. Thin if necessary for proper spraying with an 80/20 mixture of water/butyl cellosolve (Pruett-Schaffer Thinner #98-8937). Add thinner a little at a time with constant gentle agitation to a maximum of 5% by volume.

APPLICATION EQUIPMENT

This paint may be applied by dip tank application, air-assisted, or airless spray. Apply 6-8 wet mils to achieve around 2-3 mils dry film thickness, when used as a primer.

DRYING TIME

Dries tack free in 15-45 minutes at 77 ^F and 50% Relative Humidity. Light handling may be possible in 90 minutes. 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 or forced warm air-drying will reduce dry time in cold shops.

CLEANUP

Clean equipment with warm soap and water or water/butyl cellosolve in an 80/20 mixture 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, and complies with current federal regulations regarding the use of lead in paint.

PHYSICAL PARAMETERS

VOC, ASTM D-3960: 2.72 lb/gal

WEIGHT PER GALLON, ASTM D-1475:

10.01 lbs

NONVOLATILE:

By weight: 44.0 +/- 2.0 %

By volume: 30.0 +/- 1.0%

THEORETICAL COVERAGE:

483 ft²/gallon/mil, dry film

INITIAL GLOSS, 60^, ASTM D-523: 20-60

VISCOSITY, ASTM D-562:

70-80 Krebs Units

pH RANGE, ASTM D-4584: 8.0-8.9

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: > 60 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.