Technical Specifications

Form: CS1339

Rev.: 091212

URETHANE

TECHNICAL DATA RO-71

9800 SYSTEM

DTM URETHANE MASTIC

.DESCRIPTION AND USES .

The 9800 System DTM Urethane Mastic is a two component, high

solids, high build, direct to metal, aliphatic acrylic polyurethane.

This urethane mastic coating is designed to provide corrosion

protection of steel in moderate to severe environments. It can be

used directly on sound rusted steel with minimum surface

preparation. It can also be used on clean steel, galvanized metal,

concrete and previously coated surfaces with proper surface

preparation.

It is suitable for tanks, towers, equipment, metal buildings, or

chemical environments.

COMPANION PRODUCTS .

RECOMMENDED PRIMERS

9800 System DTM Urethane Mastic is self-priming and can be

used without a primer in mild to moderate exposures. The use of

a primer is required in severe exposures and on heavily rusted

surfaces. Also, aluminum should be primed.

The following primers are recommended for conditions indicated:

• 9100: Severe conditions; (9115 should not be used as a primer)

• 9360 or 9370: Severe conditions; these primers can be

topcoated within 30 days, enhanced adhesion over aluminum.

• 5369, 5381: Moderate conditions; enhanced adhesion over

aluminum.

• 2068, 2082: Mild to moderate conditions; where a single-coat,

fast dry primer is needed.

.PRODUCT APPLICATION .

SURFACE PREPARATION

ALL SURFACES: Remove all dirt, grease, oil, salt and chemical

contaminants by washing the surface with Pure Strength

Cleaner/Degreaser item #3599402 or other suitable cleaner. Mold

and mildew areas must be cleaned with a chlorinated cleaner or

bleach solution. Rinse with fresh water and allow to dry.

STEEL: Hand tool (SSPC-SP-2) or power tool (SSPC-SP-3) clean

to remove loose rust, scale, and deteriorated previous coatings to

obtain a sound rusted surface. For optimum corrosion resistance,

abrasive blast to commercial grade SSPC-SP-6, with a blast

profile of 1-2 mils (25-50 µ). All weld spatter should be removed

along weld seams, rough welds should be ground smooth, and all

sharp edges should be ground to a smooth radius.

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URETHANE TECHNICAL DATA RO-71 9800 SYSTEM DTM URETHANE MASTIC .DESCRIPTION AND USES . COMPANION PRODUCTS . RECOMMENDED PRIMERS The 9800 System DTM Urethane Mastic is a two component, high solids, high build, direct to metal, aliphatic acrylic polyurethane. This urethane mastic coating is designed to provide corrosion protection of steel in moderate to severe environments. It can be used directly on sound rusted steel with minimum surface preparation.
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TECHNICAL DATA 9800 SYSTEM DTM URETHANE MASTIC .PRODUCT APPLICATION (cont.) . .PRODUCT APPLICATION (cont.) PREVIOUSLY COATED: Previously coated surfaces must be sound and in good condition. Smooth, hard, glossy or aged twocomponent epoxy coatings should be scarified by sanding or sweep blasting to create a surface profile. The 9800 System DTM Urethane Mastic is compatible with most coatings, but a test patch is suggested.
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TECHNICAL DATA 9800 SYSTEM DTM URETHANE MASTIC . PHYSICAL PROPERTIES . FINISH COLORS TINT BASES Aliphatic isocyanate converted acrylic polyurethane (ASTM type V) Aliphatic isocyanate converted acrylic polyurethane (ASTM type V) Methyl amyl Ketone, butyl acetate, esters Methyl amyl Ketone, butyl acetate, esters 9.2-11.2 lbs. 9.4-10.8 lbs. 1.1-1.3 kg 1.1-1.3 kg By Weight 70-74% 70-73% By Volume 58-62% 60% <340 g/l (2.8 lbs./gal.) <340 g/l (2.8 lbs./gal.
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