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Polyvinyl butyral. Acts as a binder. Also acts as a co-binder for powder coatings.
Details
Common names
PVB
Product Type
Applications
Producer
Supplier
Chemical Composition
Polyvinyl Butyral
Advantages
- better plasticizing properties
- very good adhesion properties
- very good adhesion to substrates like polyolefins, metals, cellulose acetate, polyester, cellophane, polyamide, and polystyrene films
- Printing inks exhibit low solvent retention
- good flow
- good resistance to water
Other Applications
adhesion promotion/ corrosion protection primers
shop primers
wash primers
stoving enamels
varnishes and lacquers for different substrates
can coatings
heat-sealable lacquers
road marking paints
powder coatings
coil coatings
flexographic as well as gravure printing inks
Handling
The adhesive strength of foil lacquers can be improved by stoving at temperatures of up to 140 °C.
If necessary, gloss and flexibility can be improved by addition of plasticizers.
Technical data
| Quantity | Value | Unit | Comment |
|---|---|---|---|
| Appearance Properties | |||
| Physical state | powder | ||
| Physical Properties | |||
| Bulk density | 0.27 | g/ml | |
| Viscosity | 180 - 280 | cP | |
| Thermal Properties | |||
| Melting point | 135 - 210 | ºC | |
| Glass transition Temperature | 72 | ºC | |
| Auto-ignition temperature | >380 | ºC | |
| Chemical Properties | |||
| Non-volatile materials | >97.5 | % wt | |
| Water absorption | 6 - 10 | % | |
| Polyvinyl alcohol content | 24 - 27 | % | |
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