International Interzinc 72 is a two component, metallic zinc rich epoxy primer, designed to provide excellent corrosion resistance both as a single coat and as a primer for a high performance coating system. Contains 90% zinc by weight in the dry film.
International Interzinc 72 is a factory or site applied primer, for use in high performance coating systems for the protection of steel in aggressive environments such as offshore structures, refineries, petrochemical and chemical plants, power stations, bridges and pulp and paper plants.
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. Oil or grease should be removed in accordance with SSPC-SP1 solvent cleaning.
Abrasive Blast Cleaning
Abrasive blast clean to Sa2½ (ISO 8501-1:2007) or SSPC-SP6. If oxidation has occurred between blasting and application of Interzinc 72, the surface should be reblasted to the specified visual standard. Surface defects revealed by the blast cleaning process should be ground, filled, or treated in the appropriate manner.
A surface profile of 40-75 microns (1.5-3.0 mils) is recommended.
Shop Primed Steel
Interzinc 72 is suitable for application to unweathered steelwork freshly coated with zinc silicate shop primers. If the zinc shop primer shows extensive or widely scattered breakdown, or excessive zinc corrosion products, overall sweep blasting will be necessary. Other types of shop primer are not suitable for overcoating and will require complete removal by abrasive blast cleaning. Weld seams and damaged areas should be blast cleaned to Sa2½ (ISO 8501-1:2007) or SSPC-SP6.
Interzinc 72 can be overcoated with a wide range of high performance topcoats including:
- Intercure 200
- Intergard 411
- Intercure 420
- Intergard 475HS
- Intercure 422
- Interseal 670HS
- Intergard 251
- Intersheen 73
- Intergard 269
- Intertuf 708
- Intergard 400
- Interzone 505
- Intergard 405
- Interzone 954
- Intergard 410
|Type:||Zinc Rich Epoxy|
|Stock Colours:||Grey and Blue|
|VOC Content:||149 g/L|
|Suitable Substrates:||For steel|
|Application Method:||Airless Spray, Air Spray, Brush, Roller|
|Theoretical Coverage:||8 m2 per litre at 75 microns DFT and stated volume solids|
|Wet Film Thickness (WFT):||83 - 125 microns|
|Dry Film Thickness (DFT):||50 - 75 microns|
|Pot Life:||10 hours at 15°C|
|Touch Dry:||35 minutes at 15°C|
|Overcoatable:||After 6 hours at 15°C|
|Hard Dry:||4 hours at 15°C|
|Cleaner / Thinner:||Thinner: International GTA220. Cleaner: International GTA822|
|Shelf Life:||12 months minimum at 25°C (77°F). Subject to re-inspection thereafter. Store in dry, shaded conditions away from sources of
heat and ignition.
|Packaging:||Available in 10 Litres|
The manufacturers data sheets are available for download from this website. It is your responsibility to read and understand all aspects of the data sheets before you place an order and prior to application. Please pay special attention to the preparation, mixing and application temperatures of the product, cleaning of substrate and environmental factors such as temperature, rain etc. Quoted coverage rates are based on the manufacturers theoretical rates and may vary depending upon substrates absorption, texture and application. We always recommend a test is carried out to ensure suitability.
Customer further agrees that Promain have no liability for any errors or omissions contained within the Product Data Sheets and are not liable for failure due to misapplication or inadequate substrate cleaning and preparation. For more information please refer to our Terms & Conditions.