Hensamine®-5305 is a polyamide curing agent with outstanding adhesion and elasticity. Compatible with a wide range of epoxy resins, it is the curing agent of choice for marine coatings, anti-corrosion primers and mid coats, coal-tar epoxy systems, adhesives, repair composites and premium protective paints.
Product overview
On ships, steel structures, containers and tank linings, coatings fail first at the interface — which is exactly where 5305 is strongest. Its long-chain polyamide structure wets and grips steel, concrete and aged coatings, flexes with thermal movement and impact, and keeps the film intact where more brittle systems crack and delaminate.
5305 also excels as a binder for repair mortars and composite patching compounds: it cures at room temperature, tolerates marginal surface preparation better than fast aliphatic amines, and provides the filler wetting needed for heavily loaded trowel-grade compounds.
Key benefits
Applications
Technical data
| Appearance | Brown viscous liquid |
|---|---|
| Viscosity (25 °C) | Approx. 10,000 – 35,000 mPa·s |
| Amine value | Approx. 90 – 140 mg KOH/g |
| Mix ratio (phr, EEW ≈ 190) | 60 – 100 parts per 100 parts resin |
| Pot life (100 g batch, 25 °C) | Approx. 90 – 150 minutes |
| Full cure | 7 days at 25 °C |
| Cured film character | Elastic, strongly adhesive, impact resistant |
Values shown are typical, determined under standard laboratory conditions, and are provided for guidance only. They do not constitute a specification. Please test a small sample against your resin system and application conditions before bulk use. The most current Technical Data Sheet is available on request via our contact form.
Handling & safety
Warm the component to reduce viscosity in cold weather; stir thoroughly before use. Apply by trowel, brush or spray depending on system design.
Data are proven under specific conditions; pre-test on your formulation before volume use.
Store sealed in the original container in a cool, dry, well-ventilated area away from ignition sources. Shelf life: 12 months. Keep containers closed and away from light; gradual darkening during long storage is normal.
20 kg and 200 kg net steel drums.
Amine products may cause skin sensitisation. Use gloves and eye protection; wash skin contact immediately with plenty of water.
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Phenalkamine Series
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Low-temperature, fast-curing phenalkamine with excellent adhesion and anti-corrosion performance. Tintable and tough.
Adhesive Series
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Low-viscosity blended amine with moderate cure time and outstanding mechanical properties — engineered for carbon-fiber and steel-plate bonding adhesives.
Work with Henster
Send us your resin system, application and performance targets — we reply with technical recommendations, TDS documents and sample arrangements within one business day.
