A bifunctional aliphatic urethane acrylate built for UV adhesives that have to hold on difficult plastics and films: 200–300 % elongation, ≥ 98 % solids and free NCO below 0.2 %, so the cured film stays tough, clear and predictable.
2Functionality
200–300 %Elongation
≥ 98 %Solid content
< 0.2 %Free NCO
What Is GMT-6050A?
GMT-6050A is a bifunctional aliphatic polyurethane acrylate developed as the elastic backbone of UV-curable adhesives. Most UV adhesive failures start at the interface, not in the bulk of the film: a hard, highly crosslinked acrylate cracks when two dissimilar substrates expand at different rates. GMT-6050A is designed around that problem — a soft, highly elastic backbone that still develops enough film strength to carry a bonded joint, and enough polarity to wet out low-energy plastic surfaces.
Because the backbone is aliphatic rather than aromatic, cured films resist the yellowing that shows up in clear laminates, display windows and decorative film. Supplied as a transparent, viscous liquid with colour held to ≤ 2 on the Fe-Co scale, it blends cleanly into 100 % solids UV adhesive formulations and cures to a flexible, optically clean bond line under mercury, gallium or LED lamps.
Key Advantages for Formulators
Bonds the plastics that normally need primers
Developed specifically for UV adhesive systems, it wets out and anchors to PC, ABS, PMMA, PVC, PET and melamine-faced board — often removing a primer step and the solvent, dwell time and rework that come with it.
200–300 % elongation without a weak film
A bifunctional structure keeps crosslink density low, so the cured adhesive absorbs differential expansion instead of cracking at the bond line — through drop tests, thermo-cycling and die-cutting.
Aliphatic backbone for non-yellowing bonds
Cured films resist yellowing in clear and light-coloured assemblies, and the resin itself does not tint the bond: colour is held to ≤ 2 on the Fe-Co scale before cure.
Typical Applications
UV adhesives for plastics — structural and semi-structural bonding of PC lenses and housings, ABS components, PMMA display parts, PVC profiles and PET film.
Film and membrane bonding — laminating adhesives for PET and other films, where the resin raises initial tack and keeps the bond flexible through slitting, die-cutting and forming.
Main resin at 20–65 % — blended with reactive diluents for viscosity and a photoinitiator package matched to the lamp spectrum.
Toughness upgrade — added at lower loadings to reduce brittleness in hard UV coatings and inks without a large drop in hardness.
Technical Specifications
Property
Value
Test method / remark
Product name
Aliphatic polyurethane UV resin
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Product code
GMT-6050A
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Chemistry type
Aliphatic polyurethane acrylate, bifunctional
2 functional groups
Appearance
Transparent, viscous liquid
Visual
Colour (Fe-Co)
≤ 2
Fe-Co scale
Functionality
2
Bifunctional
Viscosity at 60 °C
20,000–40,000 mPa·s
NDJ-type rotational viscometer
Solid content
≥ 98 %
GB/T 6751—1986
Free NCO
< 0.2 %
GB/T 12009.4—89
Elongation
200–300 %
Cured film, typical value
Recommended dosage
20–65 %
As the main resin in a UV adhesive
Packaging
20 kg black plastic drum
Custom packaging on request
Shelf life
6 months
Sealed, room temperature, protected from light
Values are typical data from the current technical data sheet, not specification limits for acceptance testing unless separately agreed in writing.
Formulation & Processing Guidance
Warming and handling
Viscosity is quoted at 60 °C, so the resin is usually conditioned in a drum oven or jacketed line before use. Warm gently and evenly, keep the drum sealed, and avoid prolonged exposure to light — the resin is photosensitive and will skin over under UV or strong daylight.
Building the adhesive
Start with 20–65 % GMT-6050A as the main resin, adjust with mono- or difunctional diluents to reach coating viscosity, and match the photoinitiator to your lamp. Add stabilisers for shelf stability and, where needed, a silane or chlorinated polyolefin adhesion promoter.
Storage and shelf life
Keep in the original sealed container at room temperature, away from light and heat. Shelf life is 6 months under those conditions. Re-seal partly used drums and re-check viscosity and appearance before production.
Safety: uncured acrylates are skin sensitisers. Wear nitrile gloves and eye protection, ensure extraction at the curing station, and read the current SDS before handling.
Quality, Documentation & Supply
Batch control
Solid content verified to GB/T 6751—1986 at ≥ 98 %; free NCO to GB/T 12009.4—89 below 0.2 %; viscosity reported on an NDJ-type rotational viscometer at 60 °C.
Documents
TDS, SDS and a certificate of analysis per batch are issued with quotations; the full documentation package for your market is available on request.
Packaging
20 kg black plastic drums as standard; custom packaging and pallet configurations on request for volume programmes.
Technical support
Send your substrate, cure equipment and target performance — our formulation team advises on loading and diluent choice before you scale.
Frequently Asked Questions
Which plastics does GMT-6050A bond?
It is developed for adhesion to PC, ABS, PMMA, PVC, PET and melamine-faced board. Final adhesion also depends on surface preparation, cure dose and the rest of the formulation, so we recommend a short trial on your actual substrate before qualification.
What loading should I use in a UV adhesive?
20–65 % as the main resin. Formulations at the upper end gain flexibility and adhesion; lower loadings are typical when the resin is used only to add toughness to a harder system.
Will the cured bond yellow over time?
The aliphatic backbone gives markedly better yellowing resistance than aromatic urethane acrylates, and the resin colour is ≤ 2 on the Fe-Co scale — normally the deciding difference for clear or light-coloured assemblies.
Is it a 100 % solids resin?
Solid content is ≥ 98 %, so it behaves as a near-100 % reactive oligomer with minimal volatile content, low shrinkage and no solvent to evaporate before cure.
Can I get a sample, TDS or SDS before ordering?
Yes. Send your substrate and application details and we will arrange a trial sample together with the technical data sheet and safety data sheet. A certificate of analysis is issued per batch with the shipment.
Qualify GMT-6050A on Your Line
Tell us the substrate, your cure equipment and the performance you need. We will send the current TDS, the SDS and a trial quantity so your lab can validate adhesion and elongation before you place a production order.
