Vinyl Acetate-Ethylene Emulsion Milky White Liquid VAE Emulsion BJ-707 For Adhesives And Coating VAE707

1. Description

Vinyl Acetate-Ethylene (VAE) emulsion is a versatile, water-based copolymer dispersion. It is created through the emulsion polymerization of vinyl acetate and ethylene monomers, where ethylene acts as an internal plasticizer. This process results in a stable, milky-white liquid that forms a flexible, durable, and clear film upon drying.

Unlike traditional Polyvinyl Acetate (PVA) homopolymers, which are hard and rigid, the incorporation of ethylene into the polymer chain gives VAE emulsions superior flexibility, adhesion to difficult substrates, and durability, even at low temperatures. They are known for being low-odor, low-VOC (Volatile Organic Compound), and user-friendly.

2. Specification

The exact specifications vary by grade and manufacturer. The table below outlines the general properties of a standard, all-purpose VAE copolymer emulsion.

3. Key Features & Advantages

• Excellent Adhesion: Adheres well to a wide variety of substrates, including PVC, wood, concrete, textiles, paper, and foams.
• High Flexibility & Toughness: The ethylene content provides inherent plasticization, resulting in films that remain flexible and crack-resistant.
• Low Odor & Low VOC: As a water-based system, it is environmentally friendly and safe for interior applications.
• Good Water Resistance: Offers better resistance to water and humidity compared to standard PVA homopolymers.
• Alkali Resistance: Films are stable under alkaline conditions, making it suitable for cementitious applications.
• Good UV Stability: Films remain clear and do not yellow significantly upon aging, ideal for clear coatings and architectural finishes.
• Good Compatibility: Can be easily blended with other polymers, fillers, pigments, and additives.

4. Applications

VAE emulsions are used as primary binders in a vast array of industries:

• Adhesives:
  • Packaging Adhesives: Case and carton sealing.
  • Woodworking Adhesives: Lamination, edgebanding, and assembly.
  • Construction Adhesives: For flooring, panels, and tiles.
  • Pressure-Sensitive Adhesives (PSAs): For labels and tapes.
  • Bookbinding: Flexible spine adhesives.
• Coatings & Paints:
  • Exterior/Interior Architectural Paints: Especially high-quality, low-odor flat to satin finishes.
  • Elastomeric Roof Coatings: For its flexibility and waterproofing properties.
  • Concrete Sealers & Additives: Improves adhesion and reduces cracking.
  • Textile & Non-Woven Binders: For disposable fabrics and back coatings.
• Construction & Building Materials:
  • Cement & Gypsum Modification: Improves flexibility, adhesion, and workability of mortars, renders, and tile adhesives.
  • Self-Leveling Underlayments (SLU): Provides crucial flexibility to prevent cracking.
  • Waterproofing Membranes: As a key film-forming component.
• Paper & Packaging:
  • Paper Coating: Provides smoothness and printability.
  • Saturation and Impregnation: For strength and stiffness.

5. Packing

VAE emulsions are typically supplied in a variety of containers to suit industrial and smaller-scale needs:

• Drums: 55-gallon (200-liter) plastic or lined steel drums.
• Intermediate Bulk Containers (IBCs): 275-gallon (1,040-liter) or 330-gallon (1,250-liter) totes.
• Pails & Small Containers: 50kg pails or smaller for testing and specialty uses.