What is INTERCURE 3420HG Part B INDIVISIBLE KIT and why choose it?
INTERCURE 3420HG Part B INDIVISIBLE KIT by International Marina is the curing component (Part B) of the two-component Intercure 3240HG polyaspartic coating system. This hardener is designed for professional industrial and OEM applications where a fast-drying, high-solids, low-VOC, high-gloss direct-to-metal coating is required. When mixed with Part A, it delivers the anti-corrosive performance of epoxy primers combined with the UV durability and aesthetics of high-gloss topcoats, in a single-coat system.
The product is optimized for automated or manual application at ambient temperatures, helping to reduce oven-drying requirements, energy consumption and handling times. Part B is supplied as an indivisible kit to ensure correct mixing ratios, consistent performance and regulatory compliance.
Main features
- Curing agent for a two-component, high-solids, low-VOC polyaspartic coating system.
- Enables single-coat, high-gloss direct-to-metal protection when used with Intercure 3240HG Part A.
- Supports rapid drying and fast handling at 20–25°C, reducing process bottlenecks.
- Designed for both manual mix (single leg) and automatic/plural component spray systems.
- Suitable for protecting heavy construction and mining machinery, agricultural equipment, railcars, transportation vehicles and general industrial machinery when used as part of the full system.
- Low VOC content in the mixed system according to the EU Solvent Emissions Directive (2010/75/EU).
- Classified as hazardous: may cause allergic skin reactions, respiratory irritation, and may cause cancer; harmful to aquatic life with long lasting effects.
- Restricted to professional and industrial users with appropriate training (isocyanate-containing product).
Technical specifications
System and composition
- Product type: Part B curing agent for two-component polyaspartic coating.
- Use: Interior and exterior two-component coating applications (with Part A).
- Mixture classification (CLP): Acute Tox. 4 (H332), Skin Sens. 1 (H317), Carc. 1B (H350), STOT SE 3 (H335), Aquatic Chronic 3 (H412).
- Hazardous ingredients: HDI oligomers (biuret), hydrocarbons C9 aromatics, hexamethylene diisocyanate.
Physical and chemical data (Part B)
- Physical state: Liquid.
- Color: Colorless.
- Odor: Solvent.
- Boiling point (initial): 166°C (330.8°F).
- Flash point: 81°C (177.8°F), closed cup (Pensky-Martens).
- Density: 1.12 g/cm³ (DIN EN ISO 2811-1).
- Viscosity (kinematic): approx. 199 mm²/s at room temperature; 223 mm²/s at 40°C (DIN EN ISO 3219).
- Solubility in cold water: Not soluble (OECD TG 105).
- Vapor pressure at 20°C: hydrocarbons C9 aromatics 0.3 mmHg (0.04 kPa); HDI oligomers biuret 0.000018 mmHg (0.0000024 kPa).
- Auto-ignition temperature: Not applicable (DIN EN 1262 reported as not applicable).
- Explosive limits (for solvent component): lower approx. 1.4% v/v, upper approx. 7.6% v/v (solvent naphtha, petroleum, light aromatics).
Key data for the mixed Intercure 3240HG system (Part A + Part B)
- Coating type: Direct-to-metal polyaspartic high-gloss primer/finish.
- Components: Two-component system (Part A base, Part B curing agent).
- Mix ratio (by volume): 2 parts Part A : 1 part Part B.
- Volume solids (mixed): 84% ± 2%.
- Gloss: 85+ gloss units at 60° angle (typical).
- Typical dry film thickness: 80–150 microns (3.2–6 mils), corresponding to 95–179 microns (3.8–7.2 mils) wet.
- Theoretical coverage: 7 m²/litre at 120 microns d.f.t. and stated volume solids (281 sq.ft/US gallon at 4.8 mils d.f.t.).
- VOC (mixed product, typical): 152 g/kg (EU Solvent Emissions Directive 2010/75/EU).
- Typical product weight (mixed): 1.36 kg/l (11.3 lb/gal).
- Flash point (components and mix, typical): Part A 53°C (127°F); Part B 81°C (178°F); mixed 55°C (131°F).
Drying and pot life (mixed system)
- Touch dry at 5°C: approx. 90 minutes.
- Touch dry at 15°C: approx. 45 minutes.
- Touch dry at 25°C: approx. 30 minutes.
- Touch dry at 40°C: approx. 30 minutes.
- Hard dry at 5°C: approx. 4 hours.
- Hard dry at 15°C: approx. 3 hours.
- Hard dry at 25°C: approx. 2 hours.
- Hard dry at 40°C: approx. 90 minutes.
- Working pot life (mixed): approx. 2.5 h at 5°C; 2 h at 15°C; 75 min at 25°C; 60 min at 40°C.
- Overcoating: Intercure 3240HG is designed as a single-coat system; minimum and maximum overcoating intervals with topcoats are not specified.
Application and surface preparation (mixed system)
- Substrates: Correctly prepared steel and other properly prepared substrates.
- Steel preparation: abrasive blast to minimum Sa2½ (ISO 8501-1:2007) or SSPC-SP6; recommended surface profile 40–60 microns (1.6–2.4 mils). Lower profiles 20–30 microns (0.8–1.2 mils) may be used to optimize appearance.
- Mixing procedure:
- Agitate Base (Part A) with a power agitator.
- Add entire contents of Curing Agent (Part B) to Part A and mix thoroughly with power agitation.
- Always mix complete units in the supplied proportions; use the mix within the specified pot life.
- Recommended application methods: airless spray, air-assisted airless spray, conventional air spray (pressure pot), brush and roller (small areas), plural component airless spray.
- Recommended spray data (airless): tip range 0.33–0.48 mm (13–19 thou); total fluid pressure at tip not less than 176 kg/cm² (2503 psi).
- Thinner: International GTA713 (do not exceed limits set by local environmental legislation; no alternative thinners).
- Cleaner: International GTA713 (no alternative cleaners).
- Equipment cleaning: flush thoroughly after use; do not allow material to remain in hoses or guns; for prolonged stoppages restart with freshly mixed units.
- Environmental conditions: relative humidity during application and cure should not exceed 85%; application above 50% RH may accelerate drying. Surface temperature must be at least 3°C (5°F) above dew point. Ensure adequate ventilation, especially in confined spaces.
- Recommended maximum dry film thickness: avoid exceeding 200 microns (8 mils) to control gloss and film build.
Applications and use cases
When correctly mixed with Intercure 3240HG Part A, INTERCURE 3420HG Part B INDIVISIBLE KIT is intended for professional use as a single-coat primer/finish in OEM and industrial environments.
Typical applications (with Part A)
- Construction and mining heavy machinery and equipment.
- Agricultural machinery and implements.
- Railcars and transportation vehicles.
- Material handling and lifting equipment.
- Pumps, valves, gear units and small motors.
- General industrial fabrications where high-gloss, UV-durable, anti-corrosive protection is required in a single coat.
Process advantages for OEMs
- Single-coat direct-to-metal application reduces total application time compared to multi-coat systems.
- Fast curing at 20–25°C helps achieve rapid handling and high production throughput without high-temperature force-drying.
- Reduced need for baking ovens or solvent burners, contributing to lower energy consumption in fabrication and painting facilities.
FAQ
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Is INTERCURE 3420HG Part B INDIVISIBLE KIT a stand-alone product?
No. It is the curing component (Part B) of the two-component Intercure 3240HG system and must be mixed with Part A in a 2:1 volume ratio before use.
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What type of coating system does it create when mixed?
When mixed with Part A, it forms a high-solids, low-VOC, fast-drying polyaspartic direct-to-metal primer/finish with high gloss and UV durability.
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On which substrates can the system be applied?
It is designed for correctly prepared substrates, including steel that has been abrasive blast cleaned to at least Sa2½ or SSPC-SP6 with an appropriate surface profile.
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What is the recommended dry film thickness?
The typical dry film thickness is 80–150 microns (3.2–6 mils), and dry film thicknesses above 200 microns (8 mils) should be avoided.
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How fast does the system dry at 25°C?
At 25°C (77°F) and 50% relative humidity, it is typically touch dry in about 30 minutes and hard dry in about 2 hours.
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Is the product suitable for outdoor exposure?
Yes. In the mixed system it is designed for both interior and exterior use, providing anti-corrosive performance and UV-durable gloss.
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Is INTERCURE 3420HG Part B INDIVISIBLE KIT hazardous?
Yes. It contains isocyanates and aromatic hydrocarbons and is classified as harmful if inhaled, skin sensitizing, potentially carcinogenic, and harmful to aquatic life with long lasting effects. It is restricted to trained professional and industrial users.
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Can it be applied by brush or roller?
Yes, but only on small areas. Typical achievable dry film thickness by brush or roller is 80–100 microns (3.2–4.0 mils).
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Which thinner and cleaner must be used?
International GTA713 is specified as both thinner and cleaner. Alternative thinners or cleaners should not be used.
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What is the shelf life and storage recommendation?
The typical shelf life is at least 12 months at 25°C (77°F). Store in dry, shaded conditions away from heat and ignition sources, in tightly closed original containers.
Section 14 – Transport information
- UN number / ID number (ADR/RID, IMDG, IATA): Not regulated.
- UN proper shipping name: Not regulated.
- Transport hazard class: Not regulated.
- Packing group: Not regulated.
- Environmentally hazardous: No (ADR/RID, IMDG, IATA entries indicate no environmental hazard classification for transport).
- Special precautions for user: For transport within user premises, always transport in closed containers that are upright and secure. Ensure that personnel transporting the product know the procedure in case of accident or spillage.
- Transport in bulk according to IMO instruments: Not applicable.
Section 8 – Personal protective measures
INTERCURE 3420HG Part B INDIVISIBLE KIT contains isocyanates and other hazardous substances. It is intended for professional users only and must be handled in accordance with the Safety Data Sheet. The following measures are highlighted in the SDS:
Engineering controls
- Use only with adequate ventilation.
- Employ process enclosures, local exhaust ventilation or other engineering controls to keep airborne concentrations below applicable occupational exposure limits.
- Ensure eyewash stations and safety showers are close to the work area.
General hygiene measures
- Eating, drinking and smoking must be prohibited in areas where the product is handled, stored or processed.
- Wash hands, forearms and face thoroughly after handling and before eating, smoking or using the lavatory.
- Remove contaminated clothing and protective equipment before entering eating areas. Wash contaminated clothing before reuse.
Eye and face protection
- Wear safety eyewear complying with an approved standard.
- As a minimum, use safety glasses with side shields where splashes or mists may occur, unless a higher level of protection is indicated by risk assessment.
Hand protection
- Use chemical-resistant, impervious gloves complying with EN374 or equivalent.
- For prolonged or frequently repeated contact: gloves with protection class 6 (breakthrough time > 480 min). Recommended materials: Viton or nitrile, thickness ≥ 0.38 mm.
- For brief contact: gloves with protection class ≥ 2 (breakthrough time > 30 min). Recommended material: nitrile, thickness ≥ 0.12 mm.
- Replace gloves regularly and immediately if damaged. Note that breakthrough times vary between glove manufacturers.
Skin and body protection
- Wear suitable protective clothing selected according to task and risk level, approved by a specialist before handling the product.
- Use appropriate protective footwear and any additional skin protection as required by local risk assessment.
Respiratory protection
- Select a respirator that meets relevant standards or certifications based on risk and exposure.
- For long-term exposure: use an air-supplied half mask.
- For short-term exposure: wear a respirator conforming to EN140 with type A/P2 filter or better.
- During dry sanding, flame cutting or welding of the dry film, wet methods should be preferred; if exposure cannot be adequately controlled by ventilation, appropriate respiratory protection is required.
- Use respirators only within a formal respiratory protection program, ensuring correct fit, training and maintenance.
Environmental exposure controls
- Emissions from ventilation and process equipment should be checked for compliance with environmental regulations.
- Fume scrubbers, filters or process modifications may be needed to reduce emissions to acceptable levels.
*Contenido generado por IA
