Polyester TGIC is a curing agent used in pure polyester powder coatings for outdoor durability, stable crosslinking, adhesion and film strength. TGIC, known as Triglycidyl Isocyanurate, has molecular weight 297 and CAS No. 2451-62-9, and its dosage is usually calculated according to the acid value of polyester resin. For coating manufacturers, this product helps build more predictable polyester powder coating formulas, reduce trial uncertainty and support long-term coating performance in outdoor and industrial environments.
TGIC (Triglycidyl Isocyanurate) is a heterocyclic epoxy compound with a molecular weight of 297 (CAS No.: 2451-62-9). It exhibits excellent heat resistance, weather resistance, adhesion, and high-temperature performance.
●Crosslinking agent for pure polyester powder coatings. Dosage is calculated based on the acid value of the polyester resin.
●Crosslinking agent for carboxyl-containing polyacrylate (PA). Typical dosage: 7% of resin weight (adjusted by acid value)
Polyester TGIC Features
Stable Crosslinking
Polyester TGIC works as a crosslinking agent for pure polyester powder coatings, with dosage adjusted according to polyester resin acid value. This gives formulators a clearer technical basis when balancing curing reaction, film hardness and coating durability. For powder coating factories, stable crosslinking helps reduce failed trials, batch variation and repeated formula correction.
Low Volatile
The volatile content is controlled at ≤0.5%, which is important for powder coating production where surface quality and curing stability matter. Lower volatile content helps reduce curing defects caused by gas release, especially when buyers need smoother coating film and better surface consistency. For B2B customers, this can lower rework pressure and improve finished coating reliability.
1、White Powder Form
Polyester TGIC is supplied as white granules or powder, making it suitable for dry blending, extrusion and powder coating formulation handling. This material form supports cleaner dosing and easier workshop storage compared with liquid additives. For production teams, stable feeding helps improve batch preparation and formulation control.
2、Controlled Epoxy Value
The product grades include TK-902 and TK-906, with epoxy equivalent indicators shown as ≤110 and 105. Epoxy equivalent is a key reference when formulators calculate reaction balance with polyester resin. Clear grade data helps buyers reduce uncertainty before pilot testing and lowers the risk of curing deviation in production.
3、Curing Temperature Fit
The melting range is 95–125°C, and viscosity at 120±1°C is shown as ≤100 mPa·s. These indicators help coating engineers judge how the curing agent behaves during extrusion, dispersion and curing. Proper melting and flow behavior support more stable film formation after curing.
Polyester TGIC Parameters
| Technical Indicators | TK-902 | TK-906 |
|---|---|---|
Appearance | White granules or powder | White granules or powder |
Epoxy Eguivalent (g/mol) | ≤110 | 105 |
Total Chlorine Content (%) | ≤0.6 | 0.4 |
Melting Range (℃) | 95-125 | 95-125 |
| Viscosity (120±1℃, mPa ·s) | ≤100 | 100 |
| Volatile Content (%) | ≤0.5 | 0.5 |
| Epichlorohydrin Residue(ppm) | ≤250 | 100 |
1、Outdoor Polyester Coatings
Outdoor polyester powder coatings need curing systems that support weather resistance, adhesion and long-term surface stability. Polyester TGIC is suitable for pure polyester powder coatings used on parts exposed to sunlight, temperature change and outdoor environments. For coating manufacturers, stable curing performance helps reduce early coating failure and customer complaints.
2、Architectural Metal Coatings
Architectural metal coating producers need powder coating formulas that maintain adhesion, surface quality and durability after installation. Polyester TGIC helps polyester resin form a stronger cured network for aluminum profiles, metal panels and exterior components. For B2B buyers, this improves coating value in building material applications where long-term appearance matters.
3、Industrial Equipment Coatings
Industrial equipment surfaces may face heat, handling, abrasion and outdoor storage before final use. Polyester TGIC supports coating systems that need better adhesion, heat performance and durable film formation. This helps powder coating factories develop products for machinery housings, metal frames and equipment parts.
4、Powder Coating Production
Powder coating factories can use Polyester TGIC in pure polyester production lines where formula consistency is critical. The curing agent must disperse well during extrusion and react properly during baking, otherwise film defects may appear. Clear indicators such as epoxy equivalent, melting range and volatile content help technical teams control production more accurately.
5、Raw Material Distribution
Chemical distributors can supply Polyester TGIC to customers producing outdoor polyester powder coatings. The product has defined grade data, application direction and technical indicators, making it easier to explain to coating factories. This helps distributors position it as a curing agent for durable polyester systems rather than a general chemical material.
Polyester TGIC Factory Supply Ability
Industry Experience
Our company has 28 years of expertise in the powder coatings industry, giving buyers more than basic raw material supply. We understand resin systems, curing agents, additives, fillers and coating production challenges, so we can support customers with practical technical communication. For Polyester TGIC buyers, this experience helps connect curing agent selection with formula balance and coating performance.
Production Base Support
Our company operates five production bases across China and Southeast Asia, supporting powder coating raw material supply and technical service for coating manufacturers. This multi-base structure helps reduce sourcing uncertainty when buyers plan regular procurement or formula expansion. For B2B customers, stable supply capability is important after a curing agent has passed testing and customer validation.
Technical Service Value
Our team provides raw material selection support, production optimization guidance and tailored supply chain solutions for coating customers. Polyester TGIC selection needs to match polyester acid value, curing condition, film performance and production process. We can discuss grade selection and application requirements before buyers move into larger-scale testing.
Quality Focus
Our factory focuses on consistent product performance through testing, traceable processes and controlled production. For Polyester TGIC orders, buyers can review key indicators such as appearance, epoxy equivalent, total chlorine content, melting range, viscosity, volatile content and epichlorohydrin residue before procurement. Packing, delivery and shipment details should be confirmed with our team based on final order requirements.
Polyester TGIC Technical Support
Our team can support Polyester TGIC orders for powder coating manufacturers, chemical raw material distributors, outdoor coating producers and industrial coating formulators. Grade selection, polyester resin matching, formula direction, testing needs and supply requirements can be discussed before quotation. Buyers can also visit our official website to review our curing agents, resin, additives, fillers and application system information.
Get A Quote - For Polyester TGIC wholesale supply, powder coating curing agent procurement or formula development support, send our team your polyester resin acid value, target application, required grade direction and order quantity. We can prepare a practical quotation based on your confirmed technical needs and purchasing plan.
To learn more about Polyester TGIC options and powder coating raw material solutions, please visit our official website:
https://www.pcotec-coating.com/
Guangdong PCOTEC Technology Co., Ltd.
With 28 years of expertise in the powder coatings industry, we leverage deep industry insights and Strong manufacturing capabilities to deliver high-quality raw materials, production optimization, and tailored supply chain solutions. Operating five production bases across China and Southeast Asia, we are not just a supplier but a trusted technical partner, committed to enhancing product performance, reducing costs, and driving efficient production for our clients.
