In the fields of industrial coatings, printing inks, and resin modification, finding a resin that balances ultra-high adhesion, extreme flexibility, and excellent chemical resistance is a constant challenge for formulators. Villon 270S, a high-performance linear hydroxyl-terminated saturated copolyester resin, offers the ideal solution thanks to its unique molecular design and balanced physical properties. It is not only the preferred material for IMD high-stretch inks but also a key additive for improving the adhesion of coatings and films.
Product Overview
Villon 270S is a linear, high molecular weight copolyester resin with reactive hydroxyl functional groups at the ends of its molecular chains. It can undergo crosslinking reactions with isocyanates or amino resins to form high-performance films. Through special process improvements, this resin exhibits excellent solubility and compatibility, allowing it to integrate easily into various complex formulation systems.
Key Technical Specifications
To help you evaluate precisely, here are the detailed physical properties of Villon 270S:
| Property | Value/State | Remarks |
|---|---|---|
| Appearance | Flaky Solid | Easy to feed and store |
| Glass Transition Temp. (Tg) | 10 ℃ | Provides good film formation and initial hardness |
| Molecular Weight (Mw) | 8000 | High molecular weight ensures excellent mechanical strength |
| Elongation at Break | 50% | Excellent flexibility, ideal for high-stretch forming processes |
| Color (Gardner) | ≤ 2 | Light color, suitable for clear or lightly tinted systems |
| Acid Value | ≤ 1 mg KOH/g | Low acid value ensures reaction stability and water resistance |
| Density | 1.05 g/cm³ | Standard resin density |
Core Advantages
1. Exceptional Adhesion
Compared to traditional hydroxy acrylic resins and epoxy resins, Villon 270S demonstrates superior bonding to various difficult-to-adhere specialty surfaces. Whether on oxidized metals, various film materials (such as PET, PVC), or surfaces requiring recoating, it forms a strong and durable adhesive layer.
2. Excellent Flexibility and Stretchability
With an elongation at break of 50%, this copolyester resin can withstand extreme mechanical processing. It is particularly suitable for IMD (In-Mold Decoration) high-stretch forming inks, effectively improving the product's heat shock resistance and elongation rate, preventing coating cracking during post-processing.
3. Outstanding Chemical Resistance
After crosslinking, the Villon 270S film forms a dense structure, exhibiting excellent chemical resistance and even meeting the demanding requirements of retort resistance, making it suitable for high-performance industrial coating applications.
Applications
🎨 Industrial Coatings
Leveraging its high adhesion characteristics, it is ideal for coating various film materials and oxidized metal surfaces. In coil coatings, can coatings, and pre-coated metal (PCM) coatings, Villon 270S provides durable protection and aesthetic appeal.
🖨️ Printing Inks
It is the ideal resin choice for IMD high-stretch forming inks. It is also suitable for functional printing inks on metal coatings or high-hardness surfaces, ensuring the ink layer remains intact during complex forming processes.
🔬 Resin Modification
As a highly effective modifier, Villon 270S can be used to modify epoxy resins, polyurethane resins, and UV-curable resin systems. It significantly improves the toughness and adhesion of the original system, helping you balance rigidity and flexibility in your formulations.
Processing Guide & Compatibility
Solvent Solubility
Soluble in: Esters, ketones, and aromatic hydrocarbons.
Insoluble in: Single alcohols, but soluble in mixed solvent systems containing alcohols and ethers.
Polymer Compatibility
Villon 270S offers broad compatibility and can blend with various polymers to meet formulation needs:
Polyester resins
Epoxy resins
Polyurethane resins
Acrylic resins
Phosphate ester resins
Crosslinking
Due to its terminal hydroxyl groups, Villon 270S can be crosslinked using:
Isocyanates: Forms a polyurethane structure, enhancing weather resistance and mechanical properties.
Amino Resins: Such as melamine resins, suitable for high-temperature baking systems.
Compliance & Availability
Villon 270S complies with FDA 175.105, making it suitable for food contact applications and packaging printing. For samples or technical support, please contact our sales representative.
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