International Interplus 256

International Interplus 256 is a low VOC two component internally flexibilised high build surface tolerant epoxy primer. Pigmented with aluminium and lamellar micaceous iron oxide for improved corrosion resistance.

Best Uses

International Interplus 256 is used as Ia high performance maintenance coating on a wide variety of surfaces including hand or power tool cleaned rusty steel. It is ideal for use in conjunction with wet abrasive blasting or ultra high pressure water blasting, or as a patch primer for rusty surfaces in maintenance situations.

For use on hot surfaces continuously running at up to 150°c (302°F) and for corrosion protection under thermal insulation of carbon steel and stainless steel.

Interplus 256 will generally be applied to bare steel but is fully compatible for overlap onto most aged coatings, in addition to touch up repair of the following primers:

• Intercure 200
• Intergard 251
• Intergard 269
• InterH2O 280
• Interseal 670HS
• Interzinc 12
• Interzinc 22
• Interzinc 42
• Interzinc 52
• Interzinc 315

Application

The performance of this product will depend upon the degree of surface preparation. The surface to be coated must be clean and free from contamination. Prior to paint application all surfaces should be assessed and treated in accordance with ISO 8504:2000. Accumulated dirt and soluble salts must be removed. Dry bristle brushing will normally be adequate for accumulated dirt. Soluble salts should be removed by fresh water washing.

Abrasive Blast Cleaning: Interplus 256 may be applied to a surface abrasive blast cleaned to a minimum Sa1 (ISO 8501-1:2007) C or D grade rusting, or SSPC SP7.

Hand or Power Tool Preparation: Hand or power tool clean to a minimum of St2 (ISO 8501-1:2007) or SSPC-SP2. Note, all scale must be removed and areas which cannot be prepared adequately by chipping or needle gun should be spot blasted to a minimum standard of Sa2 (ISO 8501-1:2007) or SSPC-SP6. Typically this would
apply to C or D grade rusting in this standard. On hot steel surfaces, cleaning to a minimum St3 (ISO 8501-1:2007) or SSPC SP3 is required. Optimum performance will be achieved from SPPC-SP11 for hand preparation, or blasting to Sa2 (ISO 8501-1:2007) or SSPC-SP6.

Ultra High Pressure Hydroblasting / Abrasive Wet Blasting: May be applied to surfaces prepared to Sa2 (ISO 8501-1:2007) or SSPC-SP6 which have flash rusted to no worse than Grade HB2M (refer to International Hydroblasting Standards). It is also possible to apply to damp surfaces in some circumstances. Further information is available from International Protective Coatings.

Aged Coatings
Interplus 256 is suitable for overlap onto most aged coating systems. Loose or flaking coatings should be removed back to a firm edge. Glossy epoxies and polyurethanes may require abrasion..