What is Intercure 420HS Part A and why choose it?
Intercure 420HS Part A Indivisible Kit by International Marina is the base component of a two-component, high solids, low VOC epoxy micaceous iron oxide (MIO) intermediate coating. Designed as a high-build barrier coat, it delivers excellent corrosion protection and fast return-to-service, with low-temperature curing and rapid overcoating properties. Used as part of a full coating system, it is suitable for demanding industrial and marine environments where long-term durability and productivity are critical.
The micaceous iron oxide pigmentation creates a plate-like barrier structure that improves resistance to moisture and contaminants, while also enhancing long-term overcoating performance. This makes Intercure 420HS particularly well suited to fabrication shop application prior to shipment, followed by final topcoating on site.
Main features
- High performance epoxy MIO intermediate – two-component epoxy with micaceous iron oxide for outstanding barrier protection.
- High solids, low VOC – 80% volume solids and VOC of 111 g/kg in compliance with the EU Solvent Emissions Directive (1999/13/EC).
- Fast curing and rapid overcoating – optimized drying and overcoating intervals to increase production flexibility in shop and site applications.
- Low-temperature cure – capable of curing at temperatures below 0°C (32°F), enabling application in cold climates (application restrictions apply).
- Excellent barrier effect – plate-like micaceous iron oxide pigment increases film tortuosity and improves long-term corrosion protection.
- Compatible with zinc primers and high performance topcoats – integrates into multi-coat systems for aggressive environments.
- Not designed for continuous water immersion – intended as an atmospheric and splash-zone barrier coat.
- Professional-use only – formulated for application by trained industrial applicators.
Technical specifications
- Product type: Epoxy micaceous iron oxide intermediate coating, Part A of a two-component system.
- Brand: International Marina (AkzoNobel).
- Colour: Light Grey, Natural MIO.
- Gloss level: Matt.
- Volume solids: 80%.
- Recommended dry film thickness: 150 microns (6 mils).
- Corresponding wet film thickness: 188 microns (7.5 mils).
- Theoretical coverage: 5.30 m²/litre at 150 microns DFT (214 sq.ft/US gallon at 6 mils DFT) at stated volume solids.
- Practical coverage: Subject to appropriate loss factors depending on application conditions.
- Application methods: Airless spray, air spray, brush, roller.
- Mix ratio (Part A : Part B): 3 parts : 1 part by volume (always mix a complete supplied unit).
- Working pot life after mixing:
- 5°C (41°F): 2.5 hours
- 15°C (59°F): 1.5 hours
- 25°C (77°F): 1 hour
- 40°C (104°F): 20 minutes
- Drying and overcoating (with recommended topcoats):
- At 5°C (41°F): Touch dry 4.5 h; hard dry 12 h; minimum overcoat 7 h; maximum overcoat: Extended.
- At 15°C (59°F): Touch dry 3.5 h; hard dry 6 h; minimum overcoat 4 h; maximum overcoat: Extended.
- At 25°C (77°F): Touch dry 2 h; hard dry 3 h; minimum overcoat 3 h; maximum overcoat: Extended.
- At 40°C (104°F): Touch dry 45 min; hard dry 1 h; minimum overcoat 1 h; maximum overcoat: Extended.
- Flash point: Part A 37°C (99°F); Part B 27°C (81°F); mixed product 33°C (91°F).
- Product weight (mixed reference): 2.11 kg/litre (17.6 lb/gal).
- VOC: 111 g/kg (EU Solvent Emissions Directive 1999/13/EC).
- Recommended thinner: International GTA220 (do not use alternative thinners, particularly those containing ketones).
- Recommended cleaner: International GTA822.
- Pack size (Part A / Part B): 20 litre kit – Part A 15 litre (approx. 33.3 kg), Part B 5 litre (approx. 5.4 kg).
- Shelf life: Minimum 12 months at 25°C (77°F), in dry, shaded conditions away from heat and ignition, subject to re-inspection thereafter.
- Density (Part A MIO Light Grey): 2.101 g/cm³ (DIN EN ISO 2811-1).
Applications and use cases
Intended uses
- As a high-build intermediate barrier coat in high performance coating systems.
- Protection of steel structures in aggressive environments, including:
- Offshore structures.
- Bridges.
- Chemical and petrochemical plants.
- Power stations.
- Application in fabrication shops prior to shipping, with final overcoating at site.
- Suitable for both new construction and on-site maintenance coating.
System compatibility
The following primers are recommended beneath Intercure 420HS:
- Intercure 200HS
- Intercure 202
- Intergard 251
- Intergard 269
- Interzinc 12 (may require a mist coat)
- Interzinc 22 (may require a mist coat)
- Interzinc 42
- Interzinc 52
- Interzinc 72
- Interzinc 135
- Interzinc 315
Recommended topcoats over Intercure 420HS include:
- Interfine 629HS
- Intergard 740
- Interthane 990
For application over prefabrication primers or for other compatible primers and topcoats: Consultar ficha técnica del fabricante.
Surface preparation and application notes
- All surfaces must be clean, dry and free from contamination; assess and prepare in accordance with ISO 8504:2000.
- Remove oil and grease in accordance with SSPC-SP1 solvent cleaning.
- Abrasive blast cleaning: Sa2½ (ISO 8501‑1:2007) or SSPC-SP6; if oxidation occurs between blasting and coating, reblast to the specified standard.
- Shop-primed surfaces: Blast weld seams and damaged areas to Sa2½ / SSPC-SP6; if extensive breakdown is present, overall sweep blasting may be required.
- Metallic zinc-primed surfaces: Ensure the surface is clean, dry and free of zinc salts; confirm zinc primers are fully cured before overcoating.
- Mix complete units only, using mechanical agitation. Once mixed, use within the specified pot life; do not reseal part-used mixes.
- Surface temperature must be at least 3°C (5°F) above the dew point.
- Product can cure below 0°C (32°F), but must not be applied at temperatures below 0°C where ice may form on the substrate.
- Intercure 420HS is not designed for continuous water immersion.
- Like all epoxies, the coating will chalk and discolour in exterior exposure; this does not impair anti-corrosive performance.
- Frequently used as a “travel coat” prior to final on-site topcoating. Avoid over-application and ensure the surface is thoroughly cleaned before overcoating to remove contamination held in the coarse MIO texture.
- Over-application can extend minimum overcoating intervals and handling times and may affect long-term overcoating properties.
- Due to the high MIO content, only relatively dark colours are available; some thin film finishes may require two coats for full opacity.
FAQ
1. What type of coating is Intercure 420HS Part A?
It is the base component of a two-component, high solids epoxy micaceous iron oxide intermediate coating designed for use as a barrier coat in high performance systems.
2. Can Intercure 420HS be used in immersion service?
No. Intercure 420HS is not designed for continuous water immersion and is intended for atmospheric and splash-zone exposure.
3. At what temperatures can I apply and cure this product?
The coating can cure at temperatures below 0°C (32°F), but should not be applied when temperatures are below 0°C if there is any risk of ice forming on the substrate. Surface temperature must always be at least 3°C (5°F) above the dew point.
4. How soon can I overcoat Intercure 420HS?
The minimum overcoating interval depends on temperature. At 25°C (77°F) the minimum overcoat time with recommended topcoats is 3 hours; at 5°C (41°F) it is 7 hours. Maximum overcoating interval is described as extended.
5. Which thinner should I use?
Only International GTA220 thinner should be used. Alternative thinners, especially those containing ketones, can severely inhibit the curing mechanism.
6. What is the recommended application method?
Airless spray is recommended for most work. Air spray, brush and roller may be used, typically for small areas or touch-up. Air spray usually requires about 5% thinning.
7. Does the coating discolour outdoors?
Yes. As with all epoxies, Intercure 420HS will chalk and discolour under exterior exposure, but this does not detract from its anti-corrosive performance.
8. Is Intercure 420HS suitable for use over zinc primers?
Yes, it can be applied over fully cured metallic zinc primers such as Interzinc products, provided the surface is clean, dry and free from zinc salts.
9. Who should use this product?
The product is intended for use only by professional applicators in industrial environments, following all relevant health, safety and environmental regulations.
10. What is the shelf life of Intercure 420HS Part A?
Stored correctly in unopened containers at 25°C (77°F), the minimum shelf life is 12 months, subject to subsequent re-inspection.
Section 14 – Transport information
- UN number / ID number: UN1263.
- UN proper shipping name: PAINT.
- Transport hazard class: Class 3 (flammable liquids).
- Packing group: III.
- Environmental hazards: Not classified as marine pollutant under the provided data.
- ADR/RID tunnel restriction code: (D/E).
- IMDG emergency schedules: F‑E, S‑E.
- Special precautions for user: Within user’s premises, always transport in closed containers kept upright and secure. Ensure personnel transporting the product know what to do in case of accident or spillage.
- Transport in bulk according to IMO instruments: Not applicable.
Section 8 – Individual protective measures
The following personal protective equipment (PPE) and exposure controls are recommended when handling Intercure 420HS Part A:
Engineering controls
- Use only with adequate ventilation.
- Employ process enclosures or local exhaust ventilation to keep airborne concentrations below statutory limits and below the lower explosive limit.
- Use explosion-proof ventilation and electrical equipment in areas where vapours may be present.
Hygiene measures
- Wash hands, forearms and face thoroughly after handling, before eating, smoking, using the lavatory and at the end of the work shift.
- Remove potentially contaminated clothing using appropriate techniques; wash before reuse.
- Contaminated work clothing should not be taken off-site.
- Ensure eyewash stations and safety showers are located close to work areas.
Eye and face protection
- Wear chemical splash goggles or equivalent eye protection compliant with an approved standard whenever there is a risk of liquid splashes, mists, gases or dusts.
Hand protection
- Wear chemical-resistant, impervious gloves complying with EN374 or equivalent.
- For prolonged or frequently repeated contact, use gloves with protection class 6 (breakthrough time > 480 minutes); recommended materials: Viton or nitrile, thickness ≥ 0.38 mm.
- For brief contact, gloves with protection class ≥ 2 (breakthrough time > 30 minutes) are acceptable; recommended: nitrile, thickness ≥ 0.12 mm.
- Replace gloves regularly and immediately if damaged. Glove performance may be reduced by physical or chemical damage or poor maintenance.
Body and skin protection
- Select protective clothing based on the specific task and associated risks; approval by a safety specialist is recommended.
- When there is a risk of ignition from static electricity, wear anti-static protective clothing that includes overalls, boots and gloves meeting EN 1149 requirements.
- Use appropriate footwear and additional skin protection measures as required.
Respiratory protection
- Based on hazard and exposure, wear a respirator conforming to EN140 with an A/P2 filter or better.
- Respirators must be used under a formal respiratory protection programme to ensure correct selection, fit and training.
- Dry sanding, flame cutting or welding of the dry film can produce hazardous dust and fumes. Prefer wet sanding/flatting where possible; if exposure cannot be controlled by local extraction, use suitable respiratory protection.
Environmental exposure controls
- Check emissions from ventilation and process equipment to ensure compliance with environmental regulations.
- Where necessary, use fume scrubbers, filters or engineering modifications to reduce emissions to acceptable levels.
*Contenido generado por IA
