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| OEM | OEM Services Provided |
| Feature | Good stability |
| Classification | Paint Additives |
| Advantage | Professional, Fast Delivery, Customizable | Samples | Apply for free，Contact Export Director now ↓ |
Features:
Great adhesion and mechanical properties;
Smooth coating layers with high gloss;
Chemical and weather resistance;
Great Storage stability
PRIMID (β-hydroxyalkylamide) crosslinkers are widely used in polyester powder coatings as an eco-friendly alternative to TGIC. Key features are summarized below:
| Parameter | PRIMID-Based Coating |
|---|---|
| Crosslinker Type | β-hydroxyalkylamide (e.g., PRIMID XL-552. QM-1260) |
| Resin Compatibility | Carboxyl-functional polyesters |
| Curing Mechanism | Hydroxyl-carboxyl esterification |
| Curing Conditions | 160-200°C (320-392°F) for 10-15 min |
| Catalyst Requirement | Optional (phosphonium salts accelerate cure) |
| Property | Performance Level |
|---|---|
| Weather Resistance | Excellent (5-8 years outdoor durability) |
| Chemical Resistance | Good (resists mild acids/alkalis) |
| Mechanical Properties | Pencil hardness: H-2H; Impact resistance: 80-100 in-lb |
| Film Appearance | Smooth, low orange peel |
| Gloss Retention | >80% after 2000h QUV exposure |
| Feature | PRIMID-Based | TGIC-Based |
|---|---|---|
| Toxicity | Non-toxic, non-mutagenic | Suspected mutagen |
| Curing Temperature | 10-20°C lower | Higher (180-200°C) |
| Regulatory Status | REACH-compliant | EU-restricted |
| Film Flexibility | Better | Good |
| Market Segment | Specific Uses |
|---|---|
| Architectural | Window profiles, façade panels |
| Automotive | Trim parts, alloy wheels |
| General Industry | Shelving, electrical cabinets |
| Furniture | Outdoor tables, garden fixtures |
| Component | Typical Content (wt%) |
|---|---|
| Polyester Resin | 50-70% |
| PRIMID Crosslinker | 3-8% |
| Titanium Dioxide | 15-25% |
| Flow Additives | 1-2% |
| Catalysts | 0-0.5% |
| Issue | Mitigation Strategy |
|---|---|
| Moisture Sensitivity | Use sealed packaging, dry storage |
| Limited Overbake Resistance | Optimize cure schedule |
| Higher Cost vs. TGIC | Offset by regulatory compliance benefits |
PRIMID-based powder coatings provide a safer, more sustainable option with excellent weatherability. While slightly costlier than TGIC systems, their regulatory acceptance and lower curing temperatures make them ideal for architectural and general industrial applications.
Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.
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