Polyvinyl Acetate (PVAc) Film-Forming Sticker
CAS Number: 9003-20-7
Polyvinyl acetate (PVAc) emulsion is used as a film-forming sticker and rainfastness agent in foliar pesticide sprays and seed treatment formulations. Upon drying, PVAc forms a flexible, water-resistant film that bonds pesticide deposits to plant surfaces, significantly extending residual efficacy and reducing wash-off during rainfall events. It is widely used in seed coating formulations to provide mechanical and biological protection to seeds during storage and germination.
Technical Specifications
| pH | 4.5–6.5 |
| appearance | Milky white emulsion |
| particle size (nm) | 200–500 |
| active ingredient (%) | 50–55 |
| viscosity (mPa·s, 25°C) | 1000–3000 |
| minimum film-forming temperature (°C) | ≤5 |
Applications
- Foliar spray rainfastness and adhesion improver
- Seed coating film former and mechanical protectant
- WP and WG formulation sticker additive
- Pesticide tank-mix sticker for extended residual activity
- Polymer encapsulation matrix for slow-release granules
Key Features
- Forms flexible, water-resistant film down to low temperatures
- Significantly improves rainfastness within 1–2 hours of spray application
- Compatible with most fungicide, insecticide, and seed treatment actives
- Provides colored coating option when combined with pigment dispersions
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CAS Number
9003-20-7
Category
Agricultural / Crop ChemicalsAvailability
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