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Excellent clarity and gloss retention for premium aesthetic performance.
Good chemical resistance to oils, greases, and common cleaning agents.
Low extractables profile suitable for indirect food contact applications.
Good processability via injection molding and extrusion with low moisture sensitivity.
Hydrolysis-resistant copolyester structure offering enhanced dimensional stability.
Reusable food storage containers and kitchenware.
Medical device housings and non-implantable diagnostic components.
Consumer electronics enclosures requiring transparency and toughness.
Point-of-purchase displays and retail signage.
Personal care packaging, including cosmetic jars and caps.
| Chemical Type | Copolyester (PET-based, cyclohexanedimethanol-modified) |
| Product Form | Natural-colored pellets |
| Appearance | Translucent, off-white granules |
| Primary Applications | Injection-molded durable goods, transparent rigid packaging |
| Key Features | Clarity, hydrolytic stability, low extractables, good melt flow |
| Benefits | Reduced drying time vs. standard PET, improved impact resistance at low temperatures |
| Processing Method | Injection molding, extrusion |
| Regulatory Status | Compliant with FDA 21 CFR §177.1630 for repeated-use food contact |
Q1: What is the primary function of Eastman Eastar Copolyester MN058 in polymer formulations?
A: Eastar MN058 functions primarily as a non-migrating, low-volatility processing aid and compatibilizer—enhancing melt flow, reducing viscosity, and improving interfacial adhesion between dissimilar polymers or additives in thermoplastic blends.
Q2: Is Eastar MN058 suitable for food-contact applications?
A: Yes, Eastar MN058 is designed to meet regulatory expectations for indirect food contact in multiple global markets, including FDA compliance for use in certain food packaging resins—subject to final formulation review and intended conditions of use.
Q3: How does Eastar MN058 differ from conventional plasticizers like phthalates or citrates?
A: Unlike small-molecule plasticizers, Eastar MN058 is a high-molecular-weight copolyester resin that remains permanently anchored within the polymer matrix—eliminating volatility, migration, and leaching concerns while maintaining long-term performance stability under thermal and mechanical stress.
Q4: What types of polymers is Eastar MN058 commonly blended with?
A: It is frequently used in polyolefin-based systems (e.g., PP, PE), engineering thermoplastics (e.g., PC, ABS), and biopolymer blends (e.g., PLA, PHA) to improve processability, impact resistance, and phase compatibility—especially in multi-layer films and co-extruded structures.
Q5: What is the recommended method for incorporating Eastar MN058 into a compound?
A: Eastar MN058 is typically introduced during melt compounding—either pre-blended with base resin or fed directly into the extruder. It exhibits excellent thermal stability up to standard processing temperatures and generally requires no special drying prior to use.
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E-mail: wangxingqiang@ericwchem.com
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