GMS-6136 Aromatic Urethane Acrylate UV Resin for Wood Veneer Coating
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|---|---|
| Categories | UV Resins & Raw Materials |
| Brand | Gomin Industry Coating Wholesale Manufacturer |
| Product Specifications | GMS-6136 |
| Product Type | UV-Curable Resin (Oligomer) |
| Model | GMS-6136 |
| Chemistry | Aromatic Polyurethane Acrylate (Bifunctional) |
| Functionality | 2 |
| Solid Content | > 98% |
| Viscosity | 30,000 +/- 5,000 mPa·s @ 60 °C |
| Free NCO | <= 0.2% |
| Elongation | up to 400% (cured film) |
| Appearance | Colorless or slightly yellow transparent viscous liquid |
| Colour (Fe-Co) | <= 2 |
| Role in Formulation | Main resin for wood veneer UV elastic coating |
| Packaging | 20 kg black plastic drum |
| Shelf Life | 6 months, sealed, dark, room temperature |
GOMIN · UV RESINS & RAW MATERIALS
GMS-6136 Aromatic Polyurethane Acrylate UV Resin for Wood Veneer
A solvent-free, high-solids aromatic urethane acrylate built for wood veneer UV elastic coating: elongation up to 400 %, solids above 98 % and free NCO at 0.2 % or below — with surface drying faster than comparable resins, so veneered panels can be stacked and sanded sooner.
What Is GMS-6136?
GMS-6136 is a bifunctional aromatic polyurethane acrylate developed as the elastic backbone of UV-curable coatings for wood veneer. Veneer is the least forgiving substrate in a wood coating line: the face is thin, it is bonded to a core with a different expansion rate, and it reacts to every humidity change in the plant and in the end user's home. A conventional rigid UV coat handles the first season and then shows grain cracks, telegraphing or white lines at the joint. GMS-6136 is designed around that failure mode — a low-crosslink, highly elastic backbone that moves with the veneer while still curing to a film you can sand and stack.
The chemistry is a deliberate trade. The aromatic backbone delivers more elongation and toughness per kilogram than an aliphatic grade, at lower cost — which is why it is specified for veneer that sits under a topcoat and lives indoors on a warm-toned substrate. If the film itself is the visible, colour-critical surface, an aliphatic grade such as GMT-6050A is the better choice; our team will say so rather than sell the wrong chemistry.
Key Advantages for Formulators
Up to 400 % elongation follows the veneer
Functionality 2 keeps crosslink density low, so the cured film stretches and recovers when the veneer swells and shrinks with the seasons — instead of building stress along the grain that later releases as a crack.
Faster surface drying than comparable resins
Elastic oligomers are usually slow to lose surface tack, and that tack is what stops you stacking, sanding or wrapping. The TDS calls out better surface drying than similar resins — shorter dwell, fewer handling marks on a soft film.
One grade for hot-press and cold-press
The TDS lists both hot-press and cold-press veneer processes, so a line running both routes can standardise on one resin — fewer changeovers, less flushing, one set of cure parameters to validate.
Typical Applications
- Main resin for wood veneer UV elastic coating — the elastic base layer under a harder topcoat on veneered furniture panels, door skins and cabinet fronts.
- Hot-press veneer lamination — the film relaxes with the veneer through the heat and pressure cycle instead of splitting over core joints.
- Cold-press veneer lamination — holds a uniform coat over a longer open time, then cures on the UV line.
- Toughness modifier — a small addition to an existing UV system raises film toughness and pulls adhesion up with it, without reformulating the whole coating.
Technical Specifications
| Property | Value | Test method / remark |
|---|---|---|
| Product name | Aromatic polyurethane acrylate UV resin | — |
| Product code | GMS-6136 | — |
| Chemistry type | Aromatic polyurethane acrylate, bifunctional | 2 functional groups |
| Appearance | Colorless or slightly yellow transparent viscous liquid | Visual |
| Colour (Fe-Co) | ≤ 2 | GB/T 1722—92 |
| Functionality | 2 | Bifunctional |
| Viscosity at 60 °C | 30,000 ± 5,000 mPa·s | NDJ-type rotational viscometer |
| Solid content | > 98 % | GB/T 6751—1986 |
| Free NCO | ≤ 0.2 % | GB/T 12009.4—89 |
| Elongation | up to 400 % | Cured film, TDS characteristic value |
| Role in formulation | Main resin | Wood veneer UV elastic coating systems |
| Packaging | 20 kg black plastic drum | Custom packaging on request |
| Shelf life | 6 months | Sealed, room temperature, protected from light |
Values are quoted from the current technical data sheet. Viscosity is measured at 60 °C on an NDJ-type rotational viscometer; at room temperature the product is substantially thicker, so benchmark against the same temperature, spindle and instrument type.
Formulation & Processing Guidance
Warm the drum to 60 °C first
The quoted viscosity is a 60 °C figure. Warm the whole drum evenly — a drum oven or heated room, not a hot plate on the base — and stir gently before sampling or pumping. Local overheating is how gelled material and rejected batches happen.
Cut viscosity with reactive diluents
Solids are above 98 %, so any thinning must come from reactive monomers, not solvent, or you give up the VOC-free advantage. Watch the effect on elongation: the grade's value is lost if the diluent hardens the film.
Match cure to lamp and film build
Pigmented or highly matted elastic coats need a surface-cure initiator, not just a through-cure one, or you will see the tack this resin is designed to avoid. Confirm the dose with a cure check on your own line. Keep matting and wax in the topcoat — the elastic layer does its structural job best left flexible.
No dosage figure is published for this grade — the TDS designates it as the main resin of the system. Send us your substrate, film build and line speed and we will quote a recommended starting loading for your trial.
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. Store in the original sealed drum at room temperature, protected from light; shelf life 6 months under those conditions.
Quality, Documentation & Supply
Batch control
Viscosity, solids, free NCO and colour are tested on each batch against the values above; a certificate of analysis ships with the order. Tell us at quotation stage if your incoming inspection runs a different method.
Documents
TDS, SDS for your destination market and a batch certificate of analysis are issued with quotations; the full documentation package is available on request.
Packaging
20 kg black plastic drums as standard — opaque, which is what a light-sensitive product wants. Pallet configuration and container loading plan available with the quotation.
Technical support
Substrate, press route, lamp type and film build in — a recommended starting formulation out. If the first trial shows cracking or poor adhesion, that is a conversation we want before you commit.
Frequently Asked Questions
What is GMS-6136 used for?
It is the main resin of UV elastic coating systems for wood veneer — veneered furniture panels, door skins and cabinet faces applied by hot-press or cold-press lamination. It is also added at low levels to other UV systems to raise film toughness and improve adhesion.
Aromatic or aliphatic urethane acrylate — which do I need?
Aromatic grades such as GMS-6136 give higher elongation and toughness at lower cost, and suit veneer that sits under a topcoat on a warm-toned substrate. Aliphatic grades cost more but hold colour under light exposure — the right choice for clear films, light-stable topcoats and plastic bonding. Choose on light stability first, then on cost.
Will GMS-6136 yellow?
Aromatic urethane acrylates are less light-stable than aliphatic ones, so some colour shift is possible if the cured film sees daylight or UV without protection. This grade is specified for veneer under a topcoat where the substrate already carries a warm tone. For a colour-stable clear film, specify the aliphatic grade GMT-6050A instead.
Can I use it as an additive rather than the main resin?
Yes — the TDS lists two roles: main resin of a wood veneer UV elastic coating system, and toughness modifier where a small addition improves flexibility and promotes adhesion. Check the effect on applied viscosity of your existing system before committing to a loading level.
Why is viscosity quoted at 60 °C?
The resin is a solvent-free oligomer with solids above 98 %, so it is genuinely thick at room temperature. The TDS quotes 30,000 ± 5,000 mPa·s on an NDJ rotational viscometer at 60 °C — the temperature at which the product is normally pumped and dosed. Warm the drum before sampling and let lab samples equilibrate to the same temperature before comparing numbers.
Qualify GMS-6136 on Your Line
Send us the substrate, the film build and the press route you run. We will come back with a recommended starting loading, the full TDS and SDS, and a trial quantity — and if aromatic is the wrong chemistry for your end use, we will point you to the aliphatic grade instead.
Request a Sample & TDS
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