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PVB is a multi-functional Polyvinyl Butyral resin by a chemical reaction and synthesis. With high transparency,good toughness,flexibility,low temperature to fight resistance, and resistance to ultraviolet radiation,water, oil,anti-aging.PVB has very strong adhesion to many kinds of materials such as:glass,metal,plastic,wood,leather and other materials,also has pigment dispersion and the excellent solubility of the resin. Now PVB has been very widely used in the automotive and architecture safety glass interlayer, paint,ink,resistors,batteries,circut boards,hot melt adhesive, the modified agent in the processing of textile fiber,etc.
| Serial number | Index name | Technical requirement | |
| 1 | Appearance | White powder | |
| 2 | Hydroxyl group Content% | 16.5-19.5 | |
| 3 | Volatile substance | ≤2.5 | |
| 4 | Free acid | ≤0.01 | |
| 5 | Viscosity | 200-300 | |
| 6 | transparency | 430nm％ | 90.5 |
| 660nm％ | 90.5 | ||
| General characteristic | Soluble in alcohol, ester and other solvents. |
| Film-forming property | PVB film forming performance is excellent, its tensile strength, tear strength, wear strength, flexibility, luster and so on |
| Pigment dispersibility | PVB has good dispersion and stability. |
| adhesion | PVB and glass, metal, plastic, leather, wood，etc |
| Chemical property | PVB is a hot melt type resin, and thermosetting resins are added to harden it in many applications to achieve chemical, solvent, and water resistance characteristics. Of course, the characteristics of different thermosetting resins and different ratios with PVB are also different. |
1, PVB has a strong affinity for metal surfaces, and has good adhesion to various surface coatings, so it can be widely used in electronics, ships, Bridges, aircraft, electrical and other aspects.
2, PVB has special bonding properties and light transmission for inorganic and plexiglass, and is the best material for safety glass interlayer.
3, After PVB is mixed with thermosetting resin, it is configured into different grades of metal adhesives, such as brake pad glue.
4, coated with solution on the metal foil can improve the strength and moisture resistance of the foil, and can be used for hot sealing of metal cans.
5, with high transparency, a certain toughness and tear strength, it has been successfully used in the field of large film flower paper for decades.
6, PVB is widely used in textile printing and dyeing, printing and other industries, especially in the transfer printing plays a pivotal role.
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