INTERTHANE 990 - BLACK - 16.22L (6:1)

Use
Suitable for use in both new construction and as a maintenance finish which can be used in a wide
variety of environments including offshore structures, chemical and petrochemical plants, bridges, pulp
and paper mills, and in the power industry.

Surface preparation
All surfaces to be coated should be clean, dry and free from contamination. Prior to paint application, all
surfaces should be assessed and treated in accordance with ISO 8504:2000.

Primed Surfaces
Interthane 990 should always be applied over a recommended anti-corrosive coating scheme. The
primer surface should be dry and free from all contamination, and Interthane 990 must be applied within
the overcoating intervals specified (consult the relevant product data sheet).
Areas of breakdown, damage etc., should be prepared to the specified standard (e.g. SSPC-SP6 or
Sa2½ (ISO 8501-1:2007), Abrasive Blasting, or SSPC-SP11, Power Tool Cleaning) and patch primed
prior to the application of Interthane 990.

Systems compatibility
The following primers/intermediates are recommended for Interthane 990:
Intercure 200 Interseal 670HS
Intercure 200HS Interzinc 315
Intercure 420 Interzinc 52
Intergard 251 Interzinc 52HS
Intergard 269 Interzone 505
Intergard 345 Interzone 954
Intergard 475HS Interzone 1000

Interthane 990 is designed to be topcoated with itself.

Required tools
Airless spray
Recommended
Tip Range 13-18 thou (0.33-0.45 mm)
Total output fluid pressure at spray tip not less than
2204 psi (155 kg/cm²)

Air spray (pressure pot)
Recommended
Gun DeVilbiss MBC or JGA
Air Cap 704 or 765
Fluid Tip E

Air spray conventionnal
Suitable
Use suitable proprietary equipment.

Brush & roller
Suitable
Typically 1.6-2.0 mils (40-50 microns) can be achieved

How to use
Mixing
Material is supplied in two containers as a unit. Always mix a complete unit in
the proportions supplied. Once the unit has been mixed, it must be used within
the working pot life specified.
(1) Agitate Base (Part A) with a power agitator.
(2) Combine entire contents of Curing Agent (Part B) with Base
(Part A) and mix thoroughly with power agitator.

Thinner : GTA713 ou GTA733
Do not thin more than allowed by local environmental legislation

Mix ratio :
6 part(s): 1part(s) par volume

Working Pot Life
41°F (5°C) 59°F (15°C) 77°F (25°C) 104°F (40°C)
12 hours4 hours2 hours 45 minutes

Drying time


Cleaning tools
Clean all equipment immediately after use with International GTA713. It is good
working practice to periodically flush out spray equipment during the course of
the working day. Frequency of cleaning will depend upon amount sprayed,
temperature and elapsed time, including any delays.
All surplus materials and empty containers should be disposed of in
accordance with appropriate regional regulations/legislation.

Work stoppages
Do not allow material to remain in hoses, gun or spray equipment. Thoroughly
flush all equipment with International GTA713. Once units of paint have been
mixed they should not be resealed and it is advised that after prolonged
stoppages work recommences with freshly mixed units.

Warning
Interthane 990 is available in a range of metallic finishes - please consult the separate Interthane 990
Metallic Working Procedures document for further information.

Level of sheen and surface finish is dependent on application method. Avoid using a mixture of
application methods whenever possible.

Best results in terms of gloss and appearance will always be obtained by conventional air spray
application.

For brush and roller application, and in some colors, two coats of Interthane 990 may be required to
give uniform coverage, especially when applying Interthane 990 over dark undercoats, and when using
certain lead free bright colors such as yellows and oranges. Best practice is to use a color compatible
intermediate or anti-corrosive coating under the Interthane 990.

When overcoating after weathering, or aging, ensure the coating is fully cleaned to remove all surface
contamination such as oil, grease, salt crystals and traffic fumes, before application of a further coat of
Interthane 990.

Absolute measured adhesion of topcoats to aged Interthane 990 is less than that to fresh material,
however, it is adequate for the specified end use.

This product must only be thinned using the recommended International thinners. The use of alternative
thinners, particularly those containing alcohols, can severely affect the curing mechanism of the coating.
Surface temperature must always be a minimum of 5°F (3°C) above dew point.

When applying Interthane 990 in confined spaces, ensure adequate ventilation.

Interthane 990 is capable of curing at temperatures below 32°F (0°C). However, this product should not
be applied at temperatures below 32°F (0°C ) where there is a possibility of ice formation on the
substrate. Condensation occurring during or immediately after application may result in a matte finish
and an inferior film. Premature exposure to ponding water will cause color change, especially in dark
colors and at low temperatures.

This product is not recommended for use in immersion conditions. When severe chemical or solvent
splashing is likely to occur, contact International Protective Coatings for information regarding suitability.
A modified version of Interthane 990 is available for use within the Korean marketplace in order to
provide improved workability.

Note: VOC values are typical and are provided for guidance purpose only. These may be subject to
variation depending on factors such as differences in color and normal manufacturing tolerances.
Low molecular weight reactive additives, which will form part of the film during normal ambient cure
conditions, will also effect VOC values determined using EPA Method 24.