EPODUR 776 High Temperature Pipeline Coating

A modified epoxy coating for use on buried pipelines that will see elevated temperatures. It is a liquid coating system that can be sprayed applied using airless spray equipment in the field or shop. It is formulated to withstand buried soil conditions at elevated temperatures as well as to with-stand applied cathodic protection voltage encountered in actual conditions.

Epodur 776 protects steel surfaces subjected to immersion in fresh or salt water, exposure in tidal or splash zones, or buried in soil. This coating is recommended for long-term protection against corrosion under extreme conditions.

SKU: EPODUR 776 Category:
Features
  • Self priming – no primer required
  • Chemically resistant.
  • Impact and abrasion resistant.
  • Resists soil stress in buried exposures.
  • Long pot life – 6 hours at 70 F
Generic Type Modified epoxy
Mixing Ratio 1 to 1
Color Black
Number of Components Two (2)
Theoretical Coverage 834 mil ft
V.O.C 2.7 lb/gal
Shelf Life 1 year (un-mixed components)
Pot Life 6 hrs. at 70 F
Surface Preparation
Remove all grease and oil by solvent cleaning per Steel Structures Painting Council Specification SSPC-SP 1, “Solvent Cleaning”. Abrasive blast per specification SSPC- SP 10, “Near White Blast Cleaning” with a profile in blasted surfaces of 1.5-2 mils. Power tool cleaning is recommended for dressing down weld splatter and sharp edges.

Dry Film Thickness Per Coat 8-10 mils per coat
Wet Film Thickness Per Coat 16-20 mils
Recommended Uses
  • Underground line exteriors and valves.
  • Field welds and fabrications.

Not recommended for Immersion in:

  • Aromatic or ketone solvents
  • Chromic acid, notice acid
  • Bleaches or oxidizing agents
  • Concentrated mineral acids
  • Interior of potable water storage tanks.
Precautionary Information
Warning : Flammable Liquid and Vapor
Keep away from heat, sparks and flame. Vapors may cause flash fire. Do not breathe vapors or spray mist. Avoid contact with eyes, skin and clothing. Use with adequate ventilation during mixing and application, Wear an appropriate properly fitted organic vapor cartridge-type respirator (NIOSH approved) during and after application unless air monitoring demonstrates vapor/mist levels are below applicable limits. Follow respirator manufacturer’s directions for respirator use. Wash thoroughly after handling. Wear protective cloves, chemical safety goggle and impervious protective clothing. Use skin cream. In confined spaces it is respirator (NIOSH approved). Use explosion-proof lights and electrical equipment. Use only non-sparking tools and equipment. Wear conductive and non-sparking footwear. Make certain all safety precautions and follow procedures described in OSHA regulations.

SEE MATERIAL SAFETY DATA SHEET (MSDS) FOR COMPLETE PRECAUTIONARY AND DISPOSAL INFORMATION. IF INSTRUCTIONS AND WARNINGS CANNOT BE STRICTLY FOLLOWED, DO NOT USE THIS PRODUCT.

For Industrial Use Only
Keep out of the reach of children

Warranty
Dampney protective coating products are expressly warranted to meet applicable technical and quality specifications. The technical data contained herein are accurate at the date of issuance but are subject to change without prior notification. No warranty of current accuracy is hereby given or implied. User must contact Dampney to verify correctness before ordering. Dampney assumes no responsibility for coverage, performance or injuries resulting from handling or use and LIABILITY, IF ANY, SHALL BE LIMITED TO PRODUCT REPLACEMENT. In no event will Dampney be responsible for consequential damages, except insofar as mandated by law. Dampney DISCLAIMS ALL OTHERWARRANTIES

Normal Ambient Air Temperature 60-90 F
Normal Substrate Temperature 65-80 F
Normal Surface Temperature 65-85 F
Normal Humidity Temperature 20-75 F
Minimum Ambient Air Temperature 50 F
Minimum Substrate Temperature 50 F
Minimum Surface Temperature 50 F
Maximum Ambient Air Temperature 120 F
Maximum Substrate Temperature 120 F
Maximum Surface Temperature 120 F
Maximum Humidity Temperature 0.85
Continuous Temperature Resistance 300 F
Intermittent Temperature Resistance 350 F
Immersion Service Temperature Resistance 300 F
Solids by Volume 0.52
Flash Point (Base) 81 F
Flash Point (Activator) 81 F
Viscosity 100 rpm 5 Spindle – Brookfield 1520 cps – part A & B at 70 F
Weight per Gallon Mixed 12.3 lb/gal
Weight per Gallon Mixed (Base) 12.8 lbs
Weight per Gallon Mixed (Activator) 11.9 lbs
Drying Time @ 70 F (Set to Touch) 4 hrs.
Drying Time @ 70 F (Recoat Time 6 hrs.
Drying Time @ 70 F (Dry to Handle) 12 hrs.
Drying Time @ 70 F (To Ship) 24 hrs.
Drying Time @ 70 F (Finial Cure) 7 days at 70 F
Boiling Water Immersion Resistance Continuous Immersion – 9 months – no effect
Ambient Water Immersion Resistance Continuous Immersion – 9 months – no effect
Distilled Water Immersion @ 70 150 days – no effect
Thermal Shock Resistance 350 F (232 F) quench into cold water – 40 cycles in 6 hours
Salt Fog Resistance Unscribed ASTM B117-11000 hours – no effect
Salt Fog Resistance Scribed ASTM B117-9000 hours – no undercutting
Cathodic Disbandment ASTM G45 2 volts 90 days – passed
ASTM G-95 3 volts 90 days – passed
Cathodic Disbandment 180 F (83 C) 3 volts – 90 days – passed
Cathodic Disbandment 212 F (100 C) 3 volts – 90 days – passed
Hardness ASTM D3363 – 6H
Adhesion ASTM D3359 – 100 psi
Chemical Resistance 30% sulfuric acid – excellent
Methyl ISO-Butyl Ketone Excellent 10% Hydrochloric acid – excellent
Iso-propyl Alcohol Excellent 85% Phosphoric acid – excellent
Mineral Sprits – Excellent 5% Acetic acid – excellent
EE Acetate – Excellent 5% sodium Hydroxide – excellent
29% Ammonium Hydroxide – excellent
Mixing & Application
Mixing
Mixing ratio is 1 part base and 1 part activator by volume. Base component has a thixotropic (gel-like) consistency and will become fluidized upon mixing. Mix base component separately to reduce viscosity and then combine activator component with base component in proper ratio and power mixer.

Pot Life
Pot life varies with temperature and decreases rapidly as temperature increases. For limitations, see chart in Technical Data section. DO NOT apply Epodur 776 that has aged beyond the time limits recommended.

Application
Epodur 776 may be applied by brush, roller, or airless spray methods. It is self- priming.

For immersion or underground service:
Apply one coat of Epodur 776 to a dry film thickness of 8-10 mils. Depending on temperature, allow drying time of 4-6 hours minimum to 24 hours maximum. Between coats as stated in the Technical Data section. Apply the second coat of Epodur 776 to a dry film thickness of 8-10 mils. Total system dry film thickness: 16-20 mils. Before placing coating system into service allow to cure fully as specified in Technical Data section.

Important: Exposure to high humidity, moisture condensation, or strong sunlight during cure time may cause formation of surface haze or blush. Before re-coating, remove this by wiping down surface with Dampney 124 thinner.

Application Equipment
Apply only after through mixing. Thinning will result in reduced film thickness. During cool weather, if thinning is required to establish proper spray pattern, or to improve leveling or flow out for brush or roller application, use up to one pint maximum of Dampney 124 thinner per gallon of coating.

Roller: Use only chemical resistant mohair-type roller. Do not use plastic-type roller. Keep roller thoroughly saturated to obtain maximum film thickness. Do not squeegee coating or apply excessive pressure to roller.

Brush: Use only pure bristle brushes. Apply in sweeping strokes. Do not brush out to a thin line. Do not attempt to remove brush marks.

Drying Time
Before placing coating system into underground service allow it to fully cure per schedule in Technical Data section. Exposure temperatures below 50 F will severely retard curing time.

Clean up
Dismantle all equipment immediately after use. Clean dismantle parts using Dampney 124 thinner. Flush hose thoroughly with Dampney 124 thinner. If application is stopped for more than 15 minutes, all equipment including brushes or rollers must be cleaned immediately with Dampney 124 thinner.

Airless Spray Equipment
As a guide only.
Pump – Graco “Building 30:1
Spray gun – Hydra-Mastic Gun
Air hose to pump – 50-90 lbs.
Air Hose to Pump – 3/8″ I.D. Hose
Filter – None
Tip Size – 0.016-0.025

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