Polyvinyl Butyral
English alias: Polyvinyl butyral resin
English abbreviation: PVB
CAS RN: 63148-65-2
1. Physical and chemical properties:
1.1 Molecular formula: (C8H14O2)n
1.2 Density: 1.07 g/cm³
1.3 Refractive index: 1.488 (at 20°C)
1.4 Glass transition temperature (Tg): 66-84°C
1.5 Solubility: Dissolve in methanol, ethanol, butanone, cyclohexanone, chlorinated hydrocarbons, aromatic hydrocarbons, etc. Insoluble in Water, fatty hydrocarbons (such as gasoline).
2. Technical indexes:
Model | 10% ethanol viscosity mPa · s | degree of polymerization | appearance | Key Features |
Low viscosity | 5～30 | Low | white powder | Fast dissolution, good fluidity, high hardness, weak initial adhesion |
Medium viscosity | 30～100 | Medium | white powder | Balanced adhesion, flexible film formation, and optimal comprehensive performance |
High viscosity | 100～300+ | High | white powder | Extremely strong toughness, high cohesion, thick solution, slightly slow dissolution |
3.Application:
①PVB glass interlayer film/automotive building laminated glass.
②Metal primer, anti rust paint, anti-corrosion coating.
③Ceramic paper ink, screen printing ink.
④Adhesive for glass, aluminum, and ceramics.
⑤Textile waterproofing, fabric coating, paper laminating.
⑥Electronic insulation, circuit board bonding.
4. Safety instructions: Toxic. Handle with dust mask, rubber gloves, and protective clothing.
5.Packing: 12.5 kg/bag.
6.Storage: Stored in a cool, ventilated place.
7.Shelf life: 12 months.
8. Transportation: Avoid heat, rain and sun exposure.
