GMS-3323D Odor-Free Polyester Acrylate for UV Wood White Paint
| Share | |
|---|---|
| Categories | UV Resins & Raw Materials |
| Brand | Gomin Industry Coating Wholesale Manufacturer |
| Product Specifications | GMS-3323D |
| Product Type | UV-Curable Resin (Oligomer) |
| Model | GMS-3323D |
| Chemistry | Polyester Acrylate (Trifunctional) |
| Functionality | 3 |
| Solid Content | 100% (solvent-free) |
| Viscosity | 300–1,000 mPa·s @ 25 °C |
| Acid Value | ≤ 4 mg KOH/g |
| Appearance | Thick and transparent liquid |
| Curing Shrinkage | Extremely low |
| Odor | Odor-free before and after curing |
| Packaging | 20 kg black plastic bucket |
| Shelf Life | 12 months at 5–35 °C, avoid direct sunlight |
GOMIN · UV RESINS & RAW MATERIALS
GMS-3323D Odor-Free Polyester Acrylate for UV Wood White Paint
A trifunctional, 100 % solids polyester acrylate built for UV wood white paint and primer: viscosity of just 300–1,000 mPa·s at 25 °C — no warming, no solvent, normal liquid dosing — with extremely low curing shrinkage and no odor before or after the film is cured.
What Is GMS-3323D?
GMS-3323D is a trifunctional polyester acrylate developed for the hardest job in a wood coating plant: making a white UV film that stays on the board. White coatings fight on two fronts at once. A heavy titanium dioxide load scatters the UV light needed for through-cure and blocks the shrinkage from escaping, so the film cures hard on top and stressed underneath. And because white is the finish the customer actually sees, any yellowing of the resin itself, any odor left in the film, and any edge adhesion loss shows up immediately.
GMS-3323D answers both fronts with chemistry rather than additives. The polyester backbone with functionality 3 builds a dense, hard network at an extremely low curing shrinkage — the stress number that decides whether a white film cracks or lifts at the edges. The 100 % solids, solvent-free body wets pigments and fillers instead of sitting on top of them, and the low 300–1,000 mPa·s viscosity at 25 °C flows and levels without warming the drum. Before curing and after curing, the resin is odor-free — a direct benefit on the coating line and on furniture that reaches the end user days after coating.
Why Formulators Specify GMS-3323D
Extremely low curing shrinkage keeps white films on the board
Shrinkage is where filled UV films fail: the tighter the network pulls as it cures, the more stress concentrates at the wood interface and the edges. The low-shrink polyester backbone takes that stress out of the film instead of asking a monomer swap to do it later.
Odor-free before and after curing
Per the TDS, the resin carries no odor before or after the cure. Coating lines dosing low-viscosity monomers know what that is worth at the tank — and furniture makers know what it is worth on a cabinet that ships the same week.
Pigment wetting and leveling at 300–1,000 mPa·s
A 100 % solids resin that still pours at room temperature is unusual, and it changes the formulation economics: raise the titanium dioxide load on strong wetting, cut the reactive diluent, and let the low viscosity do the leveling the diluent used to do.
One honest boundary: the TDS lists excellent adhesion, good leveling, wear and chemical resistance among the product features, with yellowing resistance stated at the resin level. Actual yellowing of a finished white film also depends on your photoinitiator package and cure dose — we recommend confirming the full system on your own line before scale-up.
Where It Fits
| Application | What the film has to survive | What this resin contributes |
|---|---|---|
| UV wood white paint | A high titanium dioxide load, thin film, and wood or MDF underneath that moves with humidity — without cracking, chipping or losing edge adhesion | Extremely low curing shrinkage lowers stress at the interface; strong pigment wetting carries the filler load; good leveling keeps the finish smooth |
| UV wood primer | Bonding to sanded wood, MDF and veneer, then accepting a topcoat without lifting | Excellent adhesion is listed in the TDS features; the low-viscosity body wets a porous substrate instead of sitting on top of it |
| Shrinkage control in a filled system | An existing white or pigmented coating that is too brittle or losing adhesion at the edges | Dosed as a partial replacement for low molecular weight monomer, it cuts shrinkage and odor at the same application viscosity |
| Low-odor interior wood parts | Furniture and fitments that reach the end user soon after coating, where residual acrylic smell is a complaint | Odor-free before and after curing, per the TDS |
Where it is not the answer
- Elastic veneer topcoats that follow wood movement — that is a job for an elastic aromatic urethane acrylate such as GMS-6136, not for a trifunctional polyester network.
- Color-critical exterior films where the resin itself must carry long-term light stability — discuss an aliphatic grade such as GMT-6050A with our team instead.
- Systems that need viscosity far below 300 mPa·s without any reactive diluent — this grade is free-flowing, but not water-thin.
Technical Specifications
| Property | Specification | Remark |
|---|---|---|
| Product name | Odor-free polyester resin | — |
| Product code | GMS-3323D | — |
| Chemistry | Polyester acrylate | Trifunctional |
| Appearance | Thick and transparent liquid | Visual |
| Viscosity @ 25 °C | 300–1,000 mPa·s | Ambient handling, no warming needed |
| Solid content | 100 % | Solvent-free, no volatile to flash off |
| Acid value | ≤ 4 mg KOH/g | Low free carboxyl content |
| Curing shrinkage | Extremely low | Stated in TDS product features |
| Odor | Odor-free before and after curing | Stated in TDS product features |
| Packaging | 20 kg black plastic bucket | — |
| Storage | 12 months at 5–35 °C, avoid direct sunlight | Keep container closed |
Data quoted from the GMS-3323D technical data sheet. The viscosity specification is measured at 25 °C — do not compare it directly against grades quoted at 60 °C; this one needs no warming before sampling or dosing.
Formulation & Processing Guidance
This grade is easy to handle — no warming, no solvent, normal liquid dosing — so most of the formulation work goes into the two things white UV coatings are judged on: through-cure and stress. The guidance below is a starting point, not a production formula.
Step 1 — Start with the shrinkage problem
Decide how much shrinkage you need to remove, then set the loading. As the main oligomer in a white primer or topcoat it carries the film; as a partial replacement for monomer it fixes an existing formulation. The number that matters is the stress left in the cured film, not the viscosity cup reading.
Step 2 — Let the wetting do the work
Good wetting of pigments and fillers lets you raise the titanium dioxide or extender load before the mill base stops flowing. Add a dispersant only if the mill base actually needs one, and judge gloss and hiding on a draw-down, not on the paste.
Step 3 — Through-cure is a photoinitiator decision
Titanium dioxide scatters UV, so the bottom of a white film always cures after the top. Choose a photoinitiator package designed for pigmented films and confirm the dose on your own line — hard on the surface and soft underneath passes a thumb test and fails an adhesion test a week later.
Recommended loading is application-specific. The TDS does not fix a dosage figure for this grade, and we prefer not to guess one for you. Tell us your substrate, film thickness and TiO₂ loading, and our technical team will come back with a starting range and a reference formulation.
Quality, Supply & Custom Formulation Support
Batch-controlled specifications
Viscosity, solid content and acid value are checked on every batch, with the TDS values as the release criteria.
Documents on request
TDS and safety data sheet available with every quotation; additional documents for your compliance team on request.
Export-ready packaging
20 kg black plastic buckets, palletized and shrink-wrapped for sea freight, with 12-month shelf life at 5–35 °C.
Formulation help, not just drums
Our technical team works directly with your laboratory on photoinitiator selection, loading ranges and adhesion verification.
Frequently Asked Questions
What does "odor-free" mean in practical terms?
The TDS specifies the resin as odor-free both before and after curing. On the line that means a more pleasant working environment around the dosing station; on the finished product it means no residual acrylic smell in furniture that is packed and shipped soon after coating.
Why is low curing shrinkage so important in a white paint?
A UV film shrinks as it cures, and a white paint carries a heavy titanium dioxide load that locks much of that shrinkage in as internal stress. If the stress exceeds the adhesion at the wood interface, the film cracks or lifts at the edges. An oligomer with extremely low curing shrinkage attacks the problem at the source instead of relying on additives or a softer monomer.
Can I compare the 300–1,000 mPa·s viscosity with a resin quoted at 60 °C?
No. Viscosity falls steeply with temperature, so a grade quoted at 60 °C will read far higher at room temperature. GMS-3323D is specified at 25 °C and stays free-flowing at ambient conditions — no drum warming, no heated dosing lines.
Is GMS-3323D an oligomer or a reactive diluent?
It is a trifunctional polyester acrylate oligomer with 100 % solid content and no solvent. At 300–1,000 mPa·s it is low enough in viscosity to reduce the reactive diluent in your formulation, but it contributes film-building crosslink density rather than acting as a thinning agent.
Polyester acrylate or urethane acrylate — which chemistry for my wood coating?
Urethane acrylates bring elastomeric toughness and adhesion; polyester acrylates bring hardness, fast cure response, pigment wetting and, in this grade, extremely low shrinkage with odor-free handling. For white paints and primers on wood and MDF, GMS-3323D is the natural starting point. For elastic veneer topcoats, GMS-6136 is the better fit — and our team will tell you honestly if your application points the other way.
What packaging and shelf life should I plan for?
20 kg black plastic buckets, 12-month shelf life stored at 5–35 °C away from direct sunlight, container kept closed. Black packaging also blocks UV exposure during storage and warehouse handling.
Need a starting formulation for your white line?
Send us your substrate, film thickness and TiO₂ loading — we will reply with a loading range, a reference formulation and a GMS-3323D sample.
Email: mesco@mescogroup.com.cn
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