Place of Origin:
Guangdong Province，China
Brand Name:
JLTL
Certification:
MSDS, TDS
Model Number:
ZTC777
The global automotive quick-repair market demands a clearcoat that eliminates oven dependency, simplifies mixing, and adapts to extreme climate variations. ZTC777 Hypercure Fast Drying Clear Coat is a premium two-component (2K) acrylic polyurethane clearcoat engineered by Zuotong (ZTC) specifically for 1-3 panel spot repairs in body shops without bake booths.
Unlike conventional clearcoats that require thinners and temperature-specific dilution adjustments, ZTC777 features a thinner-free formula — simply mix the clearcoat with the correct hardener and spray. With dedicated ZTH770 (Winter)and ZTH772 (Summer) hardeners, this system maintains consistent drying performance across temperatures from below 15°C to above 30°C, making it the ideal stocking item for distributors serving diverse climate regions.
ZTC777 utilizes a high-performance acrylic polyurethane resin system that crosslinks rapidly when activated with the polyisocyanate hardener. The dual-hardener architecture enables tailored curing kinetics:
[ZTC777 Acrylic Polyurethane Resin] + [ZTH770/ZTH772 Hardener]│▼[3D Rapid Cross-Linked Network](Fast curing without external heat)
| Hardener Model | Optimal Temperature Range | Pot Life at 25℃ | Polish Time at 25℃ |
|---|---|---|---|
| ZTH770 (Winter) | < 15℃ (recommended) / 15-25℃ (acceptable) | ~30 minutes | ~30 minutes |
| ZTH772 (Summer) | > 25℃ (recommended) / 15-25℃ (acceptable) | ~35 minutes | ~35 minutes |
Both hardeners share the same 2:1 mixing ratio by volume (Clearcoat : Hardener), simplifying training and field usage for end-users.
High ambient temperatures (30-35℃) accelerate drying, making ZTH772 the default choice. Workshops achieve sub-40 minute polish times without oven infrastructure.
Temperatures dropping below 0℃ make conventional clearcoats unusable without heated booths. ZTH770 winter hardener maintains active curing kinetics, enabling year-round repair operations.
Distributors can stock a single SKU (ZTC777 kit) that covers both coastal humid regions and arid desert climates by simply switching between hardener grades.
High vehicle turnover demands sub-1-hour turnaround. ZTC777's rapid ambient cure allows fleet operators to patch bumpers and doors during driver shifts.
Ensure the basecoat (color coat) is fully dry. For Zuotong 1K solvent basecoats, allow sufficient flash-off until the surface is uniformly matte. Wipe with a tack cloth to remove dust.
Mix 2 parts ZTC777 Clearcoat with 1 part ZTH770 or ZTH772 Hardener by volume. Stir thoroughly for 60 seconds. Do not add thinner. The system is pre-formulated for optimal spray viscosity.
Apply 2 full wet coats with a 50% overlap per pass. No inter-coat flash-off time is required. Target total dry film thickness: 40 — 60 μm.
At 25℃ ambient temperature:
Polishing procedure: Wet-sand with P2000 → P3000 sandpaper → Apply coarse cutting compound with foam pad → Finish with fine mirror polish.
| Parameter | Measured Value | Notes |
|---|---|---|
| Resin Type | 2K Acrylic Polyurethane | Crosslinks with polyisocyanate hardeners |
| Mixing Ratio | 2 : 1 by volume (Clearcoat : Hardener) | No thinner added |
| Pot Life at 25℃ | 30 min (ZTH770) / 35 min (ZTH772) | Discard after gelation begins |
| Spray Viscosity | Pre-set (no adjustment needed) | Factory-optimized for 1.2-1.4mm nozzle |
| Dry Film Thickness | 40 — 60 μm | Achieved in 2 wet coats |
| Polish Time at 25℃ | 30 min (ZTH770) / 35 min (ZTH772) | Ambient cure, no bake required |
| Shelf Life | 24 months in original sealed container | Store at 5-35℃, dry and ventilated |
To ensure customer satisfaction and prevent application failures, clearly communicate these restrictions to your buyers:
| Avoid This Application | Reason |
|---|---|
| Full vehicle respray | Fast-drying nature causes dry spray and poor leveling on large surfaces |
| Large panel (hood/roof) painting | Flow and gloss may be compromised |
| High-end concours restoration | For projects demanding ultra-long curing and maximum depth, use standard HS clearcoats |
| Projects without time pressure | Standard clearcoats offer better cost efficiency for non-urgent jobs |
| Component | Standard Pack Size | Carton Configuration | Carton Dimensions |
|---|---|---|---|
| ZTC777 Clearcoat | 4 Liters per can | 4 cans per carton | 35.3 * 22.7 * 32.8 cm |
| ZTH770/ZTH772 Hardener | 2 Liters per can | 8 cans per carton | 35.5 * 23.5 * 36.0 cm |
Recommended Wholesale Unit: 1 kit = 1 can (4L Clearcoat) + 1 can (2L Hardener)
Export Documentation: Full MSDS, ISO certification, Technical Data Sheet (TDS), Certified Maritime Safe Transport Appraisal.
HS Code Classification:
[ZTC Epoxy Primer] → [ZTC 1K Solvent Basecoat] → [ZTC777 Clearcoat] → [ZTH770/ZTH772 Hardener]A: The clearcoat is factory-formulated at the optimal spraying viscosity (corresponding to approximately 16-18 seconds on a DIN 4 cup at 25℃). End-users simply mix with the correct hardener at 2:1 and spray. This eliminates dilution errors common in field workshops.
A: In the 15-25℃ transition range, both hardeners are acceptable. However, using ZTH770 above 30℃ may cause excessively fast drying, leading to dry spray and poor gloss. Using ZTH772 below 10℃ will result in significantly slower curing. We recommend stockists carry both hardeners for full seasonal coverage.
A: The mixed clearcoat must be discarded after 30-35 minutes (depending on hardener type). Plan your mixing quantity based on the repair area. For a single bumper repair (approx. 2m²), 150-200 ml of mixed paint is typically sufficient.
A: ZTH772 has been tested and performs reliably up to 40℃ ambient temperature. At extreme temperatures above 40℃, we recommend reducing the mixed paint quantity and spraying in smaller sections to prevent dry spray.
A: Yes. ZTC777 and its hardeners are classified as Class 3 flammable liquids for sea transport. We provide full MSDS, Dangerous Goods Declaration, and Maritime Transport Certificate for all export shipments. Proper UN-approved packaging and labeling are applied.
A: Polyisocyanate hardeners (ZTH770/ZTH772) react with atmospheric moisture. Keep the lid tightly sealed immediately after each use. Store in a cool, dry area (preferably below 30℃). If the hardener becomes cloudy or shows crystal formation, do not use it — this indicates moisture contamination.
A: We recommend an initial stocking ratio of 60% ZTH770 and 40% ZTH772 for markets with distinct winter/summer seasons. As your customer base grows, adjust based on actual seasonal consumption patterns.
A: Yes. We offer comprehensive OEM/ODM services including custom label design, custom packaging, and minimum batch formulation adjustments for qualified distribution partners.
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