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PRODUCT NUMBER

PRODUCT NAME

24-47

 FLAT BLACK  W/B ACRYLIC PRIMER

 

GENERAL DESCRIPTION

 

Pruett-Schaffer’s #24-47 Flat Black Paint is a low cost, air drying, water based acrylic emulsion paint.  It is designed as a spray applied, direct-to-metal finish coat.  The cured film exhibits very good salt and chemical resistance. The flat finish gives a uniform dry film that hides imperfections in the metal. The coating allows high film build without sags, so the desired dry film thickness can be applied in one coat.

 

RECOMMENDED USES

 

This product is recommended for railcar, general equipment or steel painting. It exhibits exceptional adhesion to a wide variety of substrates including minimally prepared cold rolled steel, galvanized steel, existing coatings, and even aluminum without pretreatment. For use where long term exterior durability is required.  Not recommended for immersion service or for areas subject to continual solvent splash.

 

SURFACE PREPARATION

 

Apply direct-to-metal.  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, all surfaces to be coated must be clean, dry and free of oil/grease, loose rust/paint, weld spatter, burning slag, dust, and chalk.  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 .015-.020 inch tip size. Use roller covers with 3/8 to 1/4 inch nap.  Brushes should be of polyester or nylon construction.  Do not apply with a cup type spray gun.  Apply 12.5 mils wet film to get 4 mils dry film for Direct-To-Metal applications.

 

DRYING TIME

 

Dries to handle in less than 1 hour 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.

 

ENVIRONMENTAL

 

This product meets current air pollution

 

regulations regarding hydrocarbon and ozone reactive emissions.  It contains no lead, chromate, or zinc.

 

PHYSICAL PARAMETERS

 

VOC, U.S. EPA Reference Method 24:

0.705 lb/gal

COATING DENSITY, ASTM D-1475:

9.47 lbs/gal +/- .25

NONVOLATILE:

By weight:   33 +/- 2.0 %

By volume:   24 +/- 1.0%

THEORETICAL COVERAGE:

380 sq. ft./ gallon @ 1mil dry film

INITIAL GLOSS, 600, ASTM D-523:10-20

VISCOSITY, ASTM D-562: 75-85 Krebs Units

FLASH POINT, PENSKY-MARTINS CC:

> 141 0F

 

TEST DATA

 

SALT SPRAY EXPOSURE, ASTM B-117 and D-1654, 5% SOLUTION: 100 hrs, rust creepage from scribe: < 1 mm, no blisters

HUMIDITY RESISTANCE, ASTM D-2247:

100 hrs: rust creepage from scribe: < 1mm, no blisters

ACCELERATED WEATHERING, ASTM G-53 WITH  UV-B BULB, 4 HRS UV THEN 4 HRS CONDENSING HUMIDITY FOR 336 HRS:

Chalking:    none     Flaking:       none

Checking:   none     Blistering:   none

Cracking:    none

IMPACT, ASTM D-2794:

   Direct: > 100 in-lbs  

   Reverse: > 100 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.

 

REVISED 04-21-2003