Polyvinyl Alcohol (Paper & Coating Grade)
CAS Number: 9002-89-5
Polyvinyl alcohol (PVA) is a water-soluble polymer used in papermaking as a surface sizing agent, coating binder, and barrier additive. It forms strong, flexible films on paper surfaces, enhancing surface strength, oil and grease resistance, and printability. PVA is also used as a co-binder in pigment coating formulations to improve coating hold-out and gloss.
Technical Specifications
| appearance | White to off-white granular powder |
| ash content (%) | ≤ 0.7 |
| moisture content (%) | ≤ 5 |
| degree of hydrolysis (%) | 87–99 |
| viscosity (4% solution, mPa·s) | 4–60 |
Applications
- Surface sizing agent for printing and writing paper
- Pigment coating binder for coated paper and board
- Grease barrier coating for food packaging paper
- Fiber glass veil binder and technical specialty papers
- Release liner and transfer paper coating
Key Features
- Excellent film-forming properties for surface barrier
- Strong adhesion to paper fibers and mineral pigments
- Improves surface strength, IGT pick resistance, and printability
- Multiple grades available for sizing, coating, and specialty use
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