1. Key Product Characteristics
T-7133 is a UV resin with a relatively slow reaction speed. This feature enables extremely high double-bond conversion during curing, resulting in a dense, high-hardness film. Key benefits include:
Excellent barrier properties
Outstanding resistance to room-temperature water and water/alcohol mixtures (especially on glass substrates)
Acid and alkali resistance approaching that of two-component epoxy coatings
Additionally, the resin shows good compatibility with vacuum metallization layers. Even after applying a UV topcoat over the plated surface, it maintains good adhesion.
2. Applicable Substrates
T-7133 is recommended for use on organic polymer and inorganic materials that are typically difficult to adhere to, including but not limited to:
Glass
Ceramics
Metals (e.g., stainless steel, aluminum)
PET, PMMA
PBT, PA+GF (glass-fiber reinforced polyamide)
This makes the resin valuable in applications requiring adhesion across multiple material types.
3. Typical Applications
3.1 UV Inks
Using T-7133 as the main resin, it can be applied in:
Screen printing inks on glass and metal
Decorative color-pattern glass inks
Ceramic and metal inks
In these applications, the adhesion and water resistance provided by the resin are critical for print durability.
3.2 UV Coatings
T-7133 is suitable for various coating processes and substrates:
Spray coating on plated glass
Digital printing on glazed ceramics
Roll or curtain coating on metal surfaces (primer and topcoat)
Coating on organic polymer substrates such as PET, PBT, and PA+GF
Its water protection performance is particularly notable in glass and metal coating applications.
4. Formulation Compatibility Guidelines
4.1 Monomer Selection
T-7133 is miscible with a wide range of conventional monomers. Monofunctional monomers such as:
PHEA
CTFA
IBOA
are recommended because of their low shrinkage and good diluting ability, which help maintain adhesion.
If multifunctional monomers are required to increase curing speed and crosslink density, propoxylated or ethoxylated modified multifunctional monomers are advised to minimize the negative impact on adhesion.
4.2 Solvent Compatibility
Soluble in: esters, ketones, aromatic solvents
Insoluble in: pure alcohol solvents
Soluble in: mixed solvents containing alcohols and ethers
4.3 Combination with Other Resins and Additives
T-7131 (trifunctional polyurethane acrylate) : When used together with T-7133, it improves boiling-water resistance, significantly increases curing speed, and lowers system viscosity. This combination is especially useful in screen printing inks.
T-7210 (difunctional polyurethane acrylate) : Improves film flexibility. When used as a primer for vacuum metallization, it enhances the adhesion of the deposited metal layer.
MP328 (vinyl organic silane hybrid) : Strengthens the anchoring between the film molecular structure, improves wetting of pigments and fillers, and enhances salt-spray resistance, water resistance, and adhesion to glass and inorganic substrates.
5. Technical Summary
| Property | Description |
|---|---|
| Adhesion | Excellent on glass, ceramics, metals, PET, PMMA, etc. |
| Reaction speed | Relatively slow – beneficial for double-bond conversion |
| Hardness & barrier | Dense film, high hardness, good barrier properties |
| Water resistance | Outstanding performance in room-temperature water and water/alcohol mixture immersion |
| Acid/alkali resistance | Approaches two-component epoxy coating levels |
| Vacuum metallization compatibility | Good adhesion to metallized layers, maintained after UV topcoat |
| System compatibility | Miscible with polyesters, epoxies, polyurethanes, phosphates, acrylates |
6. Who Should Consider T-7133
T-7133 is suitable for UV-curable product development where adhesion and durability are critical. Typical users include:
Manufacturers of UV inks for glass and metal requiring high resistance
R&D personnel working on decorative glass or ceramic coatings
Formulators of primer or topcoat for vacuum metallization
Coating companies handling difficult engineering plastics (e.g., PA+GF)
7. Conclusion
T-7133 is not designed for maximum cure speed. Instead, it trades speed for higher conversion and crosslinking density, achieving a practical balance between adhesion, water resistance, chemical resistance, and barrier performance. For UV coating, ink, or adhesive formulations that need to adhere to difficult substrates and meet long-term durability requirements, T-7133 is a worth-evaluating base resin.
If you are developing such products, small-scale testing under your actual process conditions (screen printing, spray, roll coating, etc.) is recommended to validate its performance in your specific system.