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| Feature | Good stability |
| Classification | Paint Additives |
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Vinyl acetate-ethylene copolymer emulsion (VAE Emulsion) is a copolymer of vinyl acetate and ethylene. It has been developed as a powerful base adhesive, offering the following unique characteristics: strong initial adhesion, high wet tack, good creep resistance, water/alkali-resistance, improved thickening response, and safe operation.
Vinyl Acetate-Ethylene Copolymer (VAE) Emulsion: Overview and Key Properties
| Category | Details |
|---|---|
| Chemical Composition | Copolymer of vinyl acetate (60-95%) and ethylene (5-40%) |
| Form | Water-based emulsion |
| Appearance | Milky white liquid |
| Solid Content | 50-60% |
| pH | 4.5-6.5 |
Key Performance Properties
| Property | Value/Characteristic |
|---|---|
| Minimum Film Formation Temp. (MFFT) | 0-15°C (32-59°F) |
| Tensile Strength | 5-15 MPa |
| Elongation at Break | 500-1000% |
| Glass Transition Temp. (Tg) | -10 to +20°C |
| Viscosity (25°C) | 500-5000 mPa·s |
Manufacturing Process
| Stage | Description |
|---|---|
| Emulsion Polymerization | Vinyl acetate + ethylene under pressure (5-80 bar) |
| Stabilization | Using protective colloids (PVA) and surfactants |
| Post-treatment | pH adjustment, preservation |
Applications by Industry
| Industry | Application | Key Benefit |
|---|---|---|
| Adhesives | Paper packaging, wood glue | Excellent wet tack |
| Coatings | Interior paints, primers | Low VOC, good adhesion |
| Construction | Cement modifiers, renders | Flexibility, water resistance |
| Textiles | Non-woven binders | Soft hand feel |
| Paper | Coating binder | Improved gloss |
Formulation Guidelines
| Component | Function | Typical % |
|---|---|---|
| VAE Emulsion | Base polymer | 80-95% |
| Plasticizer | Flexibility enhancer | 0-5% |
| Thickener | Rheology modifier | 0.1-1% |
| Defoamer | Process aid | 0.1-0.5% |
Advantages vs. Alternatives
| Property | VAE Emulsion | Pure PVAc | Acrylics |
|---|---|---|---|
| Flexibility | Excellent | Poor | Good |
| Water Resistance | Good | Fair | Excellent |
| Cost | $ | $ | $$ |
Safety & Handling
| Parameter | Specification |
|---|---|
| VOC Content | <50 g/L |
| Flash Point | >100°C (non-flammable) |
| Storage | 5-30°C, avoid freezing |
Market Data
| Region | Market Share | Growth Rate |
|---|---|---|
| Asia-Pacific | 45% | 6.2% CAGR |
| Europe | 30% | 3.8% CAGR |
| North America | 20% | 4.5% CAGR |
Leading Producers
| Company | Brand Examples |
|---|---|
| Wacker | VINNAPAS® EP |
| Celanese | DUR-O-SET® Elite |
| Dairen Chemical | EVAFLEX® |
Key Advantages and Limitations
| Advantages | Limitations |
|---|---|
| Superior flexibility at low temps | Limited exterior durability |
| Excellent substrate adhesion | Higher cost than PVAc |
| Freeze-thaw stable | Requires biocides |
Summary
VAE emulsions combine the adhesive strength of vinyl acetate with the flexibility of ethylene, creating versatile water-based polymers for construction and packaging applications. Their balance of performance and environmental compliance drives steady market growth, particularly in sustainable adhesive formulations.
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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