2/1 volume ratio, designed specifically for conventional airless spray. Creates a smooth and glossy finish with excellent anticorrosive protection.

SUMMARY

For Application Above or Below Water

BIO-DUR® 290 is based on a unique blend of liquid epoxy polymer and aliphatic polyamine curing agents, which is able to displace water from wet surfaces in order to make a permanent bond. The formulation is solvent-free to ensure safety and maximum technical performance.

Although solvent-free the formula is designed for high build application using standard spray equipment such as single-component airless spray or pressure pot.

BIO-DUR® 290 provides permanent protection under the most adverse conditions. The formula is uniquely field-friendly and uses advanced low toxicity ingredients in a high build brushable/rollable or plural sprayable product. Ships “Non-Regulated” by USDOT, IATA and IMO.

RECOMMENDED USES

ANTICORROSIVE COATING
Splash zone, abrasion resistance above or below water.

FAIRING COMPOUND
Smoothing rough steel and concrete.

ENCAPSULATING COATING
Smooth, dense, easily decontaminated coating for steel and concrete.

WASTEWATER
Reinforces, smooths and protects concrete exposed to chemical or municipal waste.

TECHNICAL INFORMATION

VEHICLE TYPE : Epoxy/Aliphatic amines/modifiers

PIGMENTATION : Color/Inert/inorganic plates

COLORS : Standard Black – others available

FINISH : High gloss, slight texture, smooth when sprayed

THINNER : Not normally required

CLEANER : MEK or lacquer thinner

MIXING RATIO : 2.0/1.0 v/v

INDUCTION TIME : Not required

POT LIFE : Approx. 35 – 45’ / 77°: F

FLASH POINT : Over 200°: F

SOLIDS BY VOLUME : 100%

SPREADING RATE/GAL : 53.5 sq.ft./gal @ 30 mils

OPTIMUM FILM THICKNESS : 25 – 40 mils

DRY TIME, (Dust free) : 8 hours at 77°: F

DRY TIME, (Service) : 14 hrs. light, 72 hrs. heavy

APPLICATION METHOD : Brush, roller, pad or airless spray

STORAGE CONDITIONS : Normal, avoid freezing

VOC : Essentially zero at normal ambient temperatures

APPLICATION NOTES

SURFACE PREPARATION:

BELOW WATER: Remove marine biological settlement and corrosion by high pressure water jetting with or without abrasive. Conventional air/abrasive blasting works well at shallow depths however efficiency falls off sharply below about 10′. Hand held power tools such as needle guns or grinders can give good results if applied conscientiously in small areas but will be inadequate in large areas especially on pitted or rough surfaces. Plan to apply the BIO-DUR 290 within 45 minutes maximum after surface preparation to minimize re-rusting or resettlement of fouling slime, which interferes with adhesion.

ABOVE WATER: Application above water requires similar high pressure water blasting or dry abrasive blasting to yield a firm, granular surface free of loose contamination. Since there is no problem from resettlement of marine fouling when working above water it is possible to delay application of the BIO-DUR 290 provided fresh contamination of the surface does not occur. Do not spray onto wet surfaces – application by brush, pad or roller is necessary to displace the water film on wet surfaces.

MIXING PROCEDURE:

BIO-DUR® 290 is supplied either in 2, 3 or 15-gallon kits of epoxy base and curing agent. It is imperative to thoroughly mix the components since unmixed “hotspots” of either base or curing agent will never cure.

Mix full kits of base and curing agent which are premeasured at the factory by adding the smaller curing agent unit into the epoxy base unit. Mixing is easily accomplished by stirring with a “Jiffy” type mixer in a geared down, (high torque), .” electric drill. Once mixing begins there will be about 40 minutes of working time available at 80° F. This time may be extended by keeping the components and mixture cool, rather than leaving it in a hot area.

APPLICATION:

1) Using a stiff brush or roller apply from a tray of mixed material aiming for a coverage rate of about 50 sq.ft./ gallon.

2) Application by heated plural spray is easy using the following equipment setup:

Graco “King” or similar with heated hoses.
Mix ratio: 2/1 by volume
Fluid pressure: 2,500 psi
Fluid temp: 120°F -140° F
Tip size: .021″ orifice

3) Application by standard high pressure airless spray requires a heavy duty unit capable of pressures to 4,500 psi.

4) Pressure pot application setup recommendation:

Pressure Pot: 5 gallons with agitator and bottom outlet
Air Cap: 18 – 20 CFM
Orifice: 86 – 110thou”
Spray gun: Binks Model 2100 or similar

CURING BEFORE SERVICE:

BIO-DUR® 290 may be immersed in fresh or salt water immediately after application. Do not expose to mechanical damage until the coating is firmly cured after about 24 hours at normal ambient temperatures.

WE URGE YOU TO READ THE MATERIAL SAFETY DATA SHEET (MSDS) BEFORE USING AND TO CALL THIN FILM TECHNOLOGY, INC., AS NECESSARY FOR ADVICE OR INFORMATION BEFORE ANY ACTUAL OR CONTEMPLATED APPLICATION.

SAFETY: This is a hazardous material if misused. Read and understand the Material Safety Data Sheet (MSDS) before use.

WARRANTY DISCLAIMER: The technical data given herein has been compiled for your help and guidance and is based upon our experience and knowledge. However, as we have no control over the use to which this information is put, no warranty, express or implied, is intended or given. We assume no responsibility whatsoever for coverage, performance or damages, including injuries resulting from use of this information or of products recommended herein.

DOWNLOAD BIO-DUR® 290 PRODUCT DATA SHEET