Frequently asked questions

A curing agent (hardener) reacts with liquid epoxy resin to form a crosslinked thermoset. The grade you choose determines cure speed, pot life, final hardness, chemical resistance and appearance. As a rule of thumb: aromatic and fatty amines suit general flooring and potting; phenalkamines excel at low-temperature, corrosion-protective work; polyamides give flexible, adhesive-friendly films; cycloaliphatic amines deliver clear, non-blushing, decorative results; and polyether amines give low-viscosity, colourless systems. Tell us your resin, process and service conditions via the contact form and our engineers will recommend the best match.

For screeds, mortar systems and mid/base coats, HS-113 (aromatic amine) and D-325K (phenalkamine) are the workhorses. For self-levelling and decorative top coats, choose HB-5008 or the non-blushing, high-gloss grades 4026 and 2215. All are documented on their product pages.

Hensamine®-5115X70 and Hensamine®-5305 (polyamides) plus D-325K (phenalkamine) are proven in marine paints, steel-structure primers, container coatings and coal-tar epoxy systems. They combine adhesion, flexibility and long-term water resistance.

HS-113 for fast, hard, moisture-resistant potting; 2215 for clear, long-working decorative and craft casting; and 4026 for low-viscosity, colourless encapsulation with improved weatherability.

Yes — custom formulation is a core Henster capability. Dedicated workshops in Fuyang, Anhui were added in 2016 specifically to satisfy each customer’s bespoke requirements, from trial batches to full production. Describe your targets via the contact form and our R&D team will respond with a proposal.

All documentation and sample requests are handled through our contact form. Include your company, country, resin system and target application; our technical team replies within one business day.

Current output exceeds 20,000 tonnes per year across Suzhou and Fuyang, and our Shishou (Hubei) plant — commissioned in early 2024 — adds a designed capacity of 90,000 t/year. This scale supports both project-based supply and long-term frame agreements. Discuss volumes and lead times with our sales team via the contact form.

Yes. We cooperate with distributors, formulators and OEM partners in coatings, construction chemicals and adhesives. Send your cooperation outline through the contact form and the right team will follow up.

Each product page lists a typical mix ratio (phr) calculated for a standard liquid epoxy resin with an epoxy equivalent weight of approximately 190 g/eq. If your resin has a different EEW, the ratio must be recalculated — our team can do this for you based on your resin data sheet. Always confirm ratios by small-scale trials before production.

Amine blush forms when moisture and CO₂ react with unreacted amine during cure — typically in cold, humid conditions or on damp substrates. Mitigate by applying at 5–35 °C with humidity below 85%, or specify our low-blush grades 4026 and 2215, which are formulated to stay blush-free and glossy.

Keep products sealed in their original containers, stored cool, dry and ventilated, away from ignition sources; shelf life is 12 months under correct storage. Amines absorb moisture and CO₂ from air, so reseal opened containers promptly. Slight darkening of phenalkamine and polyamide grades, or mild turbidity, is normal and does not affect performance. Waterborne grade 7055 must be protected from frost and stored at 5–40 °C.

Amine products can cause skin sensitisation. Wear chemical-resistant gloves and eye protection, work in ventilated areas, and wash any skin contact immediately with plenty of water. Waterborne 7055 is a non-hazardous waterborne product. Detailed safety documentation is available on request.

Yes. D-325K is explicitly designed for tinting, and the light-coloured grades 2215, 4026 and 801 accept pigmentation for coloured floors, grouts and adhesives. For clear or white systems we recommend our colourless grades to avoid yellowing.

Standard packaging is 20 kg and 200 kg net steel drums; waterborne 7055 is supplied in 25 L or 200 L plastic drums. Alternative formats and labelled packaging can be discussed for project volumes via the contact form.