PRODUCT NUMBER

PRODUCT NAME

27-8

LIGHT YELLOW PVDC LINING

GENERAL DESCRIPTION

Pruett-Schaffer’s #27-8 Yellow Lining is a high performance, fast air-drying, water based basecoat. It is formulated from a very dense polyvinylidene copolymer, which imparts very good abrasion resistance to the resulting film. This coating has very good adhesion to a variety of substrates, and is suitable for both interior and exterior use. It exhibits excellent acid, caustic, salt, chemical, and solvent resistance.

RECOMMENDED USES

This product is recommended for use as a spray-applied, corrosion- resistant basecoat or intermediate coating for aluminum substrates. May be used in extremely corrosive environments. This product can be used as a basecoat under both water & solvent based topcoats. This coating is not recommended for water immersion service or for areas subject to constant temperatures in excess of 180 ^F. Long term exposure to excessive temperatures will result in release of Hydrochloric acid causing corrosion.

SURFACE PREPARATION

At a minimum for acceptable performance, all surfaces to be coated must be clean, dry and free of oil/grease, loose 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 water. 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 brush or roller or spray equipment, but air-assisted or airless spray is the preferred method. Brushes should be of polyester or nylon construction. Use roller covers with ³/₈- to ¹/₄-inch nap. Spray equipment should be stainless steel. Use spray tips of 0.015-0.020 inch.

DRYING TIME

6-12 mils wet dries tack free in 1-3 hours at 77 ^F and 50% Relative Humidity. Allow to dry for 1 hour if recoating with 2-component paints containing active solvents such as ketones. High humidity will prolong the dry time more so than low temperatures. To speed the dry time, good air movement over the work and local exhaust is recommended. Forced warm air-drying will reduce the dry time in cold shops, but heat lamps are not recommended as they cause accelerated surface drying and trap solvent within the paint film.

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, and is VOC compliant for the railcar and architectural maintenance industries. It contains no chromate and complies with current federal regulations regarding the use of lead in paint.

PHYSICAL PARAMETERS

VOC, U.S. EPA Reference Method 24:

0.41 lb/gal

COATING DENSITY, ASTM D-1475:

11.57 lb/gal

NONVOLATILE:

By weight: 62.8 +/- 2.0 %

By volume: 48.0 +/- 1.0%

THEORETICAL COVERAGE:

771 ft²/gallon/mil, dry film

GLOSS, 60^, ASTM D-523: 5-20

VISCOSITY, ASTM D-562: 75-85 KU

ANTISAG INDEX, ASTM D-4400: >16 mils

IMPACT, ASTM D-2794, in-lb:

Direct: >12 Reverse: >12

pH: 6.5-8.0

FLASH POINT, PMCC: >141 ^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.