Polyvinyl Butyral (PVB)
PVB, Poly(vinyl butyral).
- CAS
- 63148-65-2
- EC
- 613-158-6
- Sectors
- Coatings, Adhesives, Sealants & Elastomers, Automotive, Building & Construction
Polyvinyl Butyral (PVB) (CAS 63148-65-2) is a specialty polymer resin supplied as a free-flowing white powder, valued for clarity, adhesion and toughness, and used as the interlayer in laminated safety glass and as a binder in industrial coatings, primers and adhesives. Available in various viscosities and high purity levels, it is the industry standard for producing safety glass interlayers.
This fine white granular powder provides a unique combination of optical transparency and impact absorption. It bonds exceptionally well to glass and metal surfaces, making it indispensable for laminated safety glass used in skyscrapers and automotive windshields.
PVB is also widely used in high-end coatings, primers, and binders due to its excellent film-forming properties and solvent solubility. It imparts superior corrosion resistance and moisture protection to industrial surfaces.
Typical Properties
| Appearance | white solid |
|---|---|
| Form | Free-Flowing Powder |
| Color | White |
| Odor | Odorless |
| Melting point | 256 °C |
| Density | 1.08 |
| Water solubility | insoluble |
| HS code | 39059990 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Polyvinyl Butyral (PVB)
Applications
- Laminated Glass: Primary interlayer material for automotive windshields and architectural safety glass.
- Industrial Coatings: Functions as a key binder in wash primers, wood coatings, and anti-corrosive metal paints.
- Adhesives: Used in structural bonding and as a binder for ceramic and metal powders in technical manufacturing.
Safety & Risks
Generally non-hazardous. Dust may cause respiratory irritation. Use Safety Goggles, Dust Masks, and Protective Gloves during industrial processing.
Packaging
25 kg plastic-lined bags or 500 kg jumbo bags.