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Highly efficient epoxy-functional chain extender for polyesters and polyacrylates.
Enables precise molecular weight control without significant gelation risk.
Improves melt viscosity, mechanical strength, and thermal stability of reactive polymers.
Compatible with standard extrusion and compounding equipment; no special handling required.
Low volatility and excellent thermal stability up to 220 °C during processing.
Chain extension of recycled PET and PBT in engineering thermoplastics.
Viscosity enhancement in waterborne polyester dispersions for coatings.
Molecular weight adjustment in reactive hot-melt adhesives.
Performance upgrading of bio-based polyesters for durable packaging films.
| Chemical Type | Epoxy-functional oligomer (multi-epoxy) |
| Product Form | Pale yellow to amber solid pellets |
| Appearance | Free-flowing granules, homogeneous color |
| Primary Applications | Chain extension, branching, and crosslinking of polyesters, polyacrylates, and polyurethanes |
| Key Features | Thermally stable, low odor, non-volatile |
| Benefits | Enhanced melt strength, improved tensile properties, reduced degradation during reprocessing |
| Storage Conditions | Store in original sealed container at 5–25 °C, protect from moisture |
| Handling Precautions | Use in well-ventilated areas; avoid inhalation of dust |
Q1: What is the primary function of Joncryl ADR 3300 in polymer systems?
A: Joncryl ADR 3300 is a multifunctional epoxy-functionalized chain extender designed to increase molecular weight and improve melt strength, viscosity, and mechanical performance—particularly in recycled or degraded polyesters, polyacrylates, and other condensation polymers.
Q2: Which polymer types are most commonly modified using Joncryl ADR 3300?
A: It is widely used with PET, PBT, PLA, and other polyester-based resins—including post-consumer recycled (PCR) grades—as well as acrylic dispersions and waterborne coatings where enhanced crosslink density and film integrity are required.
Q3: How is Joncryl ADR 3300 typically incorporated into a formulation?
A: It is generally added during melt compounding or extrusion, either directly to the polymer melt or pre-blended with masterbatch carriers. Processing temperatures should remain within the thermal stability window of the base polymer to ensure effective reaction without degradation.
Q4: Does Joncryl ADR 3300 require special handling or storage conditions?
A: Yes—it is moisture-sensitive due to its reactive epoxy groups. Store in tightly sealed containers under dry, cool conditions, and minimize exposure to ambient humidity during handling to preserve reactivity and shelf life.
Q5: Can Joncryl ADR 3300 be used in food-contact applications?
A: Its suitability for food-contact applications depends on final regulatory approval of the complete formulation. While Joncryl ADR 3300 is designed for use in high-performance industrial and packaging applications, end-use compliance must be verified case by case with relevant food safety authorities.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
