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Resin technology

Amino Acrylate UV Resins

Amine-functional acrylates for faster cure and better surface finish

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Key facts

  • Amino acrylate (amine-modified acrylate) technologies for UV-curable coatings and inks.
  • Designed to support fast curing and enhanced surface performance in demanding formulations.
  • Key properties: improved cure response, surface hardness, gloss, scratch and abrasion resistance.
  • The amine functionality reduces oxygen inhibition at the film surface.

Amino acrylates solve the single most common problem in UV curing: a coating that is cured in the bulk but tacky at the surface.

That tack is oxygen inhibition. Atmospheric oxygen quenches the free radicals at the air-film interface faster than they can propagate, leaving an undercured surface layer. Amine-modified acrylates address it chemically — the tertiary amine functionality acts as a hydrogen donor, scavenging oxygen and regenerating radicals at the surface where the problem is.

CoatPro Innovations develops amino acrylate technologies for UV-curable coatings and inks, designed to support fast curing and enhanced surface performance in demanding formulations. The practical result is a formulation that cures at higher line speed, at lower photoinitiator loading, or under lower lamp power than the same formulation without it — and finishes with a properly cured, non-tacky surface.

The properties we develop toward are cure response, surface hardness, gloss, scratch and abrasion resistance, and formulation flexibility. Amino acrylates are normally used as a component of a formulation alongside a primary oligomer rather than as the sole backbone, and they contribute to both cure kinetics and final film properties.

One honest caveat: amine functionality can contribute to yellowing and can affect stability in some pigmented systems. Loading level matters, and it is worth establishing on your specific formulation.

What this technology delivers

  • Cure response

    Reduced oxygen inhibition allowing faster line speed or lower photoinitiator loading.

  • Surface hardness

    Properly cured surface layer rather than a tacky undercured skin.

  • Gloss

    Clean surface cure supporting gloss development.

  • Scratch and abrasion resistance

    Surface durability improved by complete cure at the interface.

  • Formulation flexibility

    Used alongside a primary oligomer to tune cure without redesigning the system.

Technical data

Typical properties

Verified values are supplied with the technical data sheet for the specific grade, once it has been matched to your application.

Regulatory and compliance information is provided per product and per market on request, supported by the relevant documentation.

Typical properties — Amino Acrylate UV Resins
Appearance Visual Available on request
Viscosity at 25 °C Brookfield Available on request
Amine value Titration Available on request
Acrylate functionality Available on request
Colour ASTM D1544 Available on request
Density at 25 °C ASTM D1475 Available on request
Recommended dosage Available on request

Typical values are supplied with the technical data sheet for the specific grade, once the grade is matched to your application. Request the data sheet.

Common questions

About Amino Acrylate UV Resins

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It acts as an amine synergist. The tertiary amine functionality donates hydrogen to scavenge oxygen at the film surface and regenerate free radicals, which counteracts oxygen inhibition. The practical effect is a fully cured, non-tacky surface and a faster overall cure.

Dosage is formulation-specific and is normally a minor component rather than the primary oligomer. Too little leaves surface tack unsolved; too much can contribute to yellowing and affect stability. The right level is established by trial on your specific system, which we can support.

Frequently, yes. Because the amine improves cure efficiency at the surface, many formulations reach the same cure state with less photoinitiator or lower lamp energy. That can offset the cost of the amino acrylate and reduce residual photoinitiator in the film.

Amine functionality can contribute to yellowing, particularly at higher loadings and over time. In pigmented systems this is generally not visible. For clear coats and white systems it is worth evaluating at your intended loading before committing.

Yes, and it is often more valuable there. LED UV systems typically have lower peak intensity than mercury lamps, making oxygen inhibition more pronounced, so the amine synergist contribution matters more. The photoinitiator still has to be matched to the LED wavelength.

Often not, which is the main commercial argument for using one. Amine synergists are the standard chemical alternative to nitrogen inerting. Whether it fully replaces inerting on your line depends on film thickness, line speed and lamp configuration.

Also consider

Other technologies

Resin technology

PU-Acrylate UV Resins

Urethane acrylate oligomers combining flexibility with fast UV cure

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Substrate, process, cure capacity and the performance you need. That is enough for us to tell you whether Amino Acrylate UV Resins is the right starting point.

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