A two-component aliphatic acrylic polyurethane finish giving excellent durability and long term
recoatability.
PRODUCT DESCRIPTION
Suitable for use both in 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.
PRODUCT CHARACTERISTICS
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 are 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 colours, 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 colours such as yellows and oranges. Best practice is to use a colour
compatible intermediate or anticorrosive coating under the Interthane 990.
When overcoating after weathering or ageing, 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 3°C (5°F) above dew point.
When applying Interthane 990 in confined spaces ensure adequate ventilation.