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PVA | Polyvinyl Acetal (I)
CAS NO. 63148-65-2
Executive standard: Q/TYG001-2014
CAS RN: 63148-65-2
1. Physical and chemical properties：
1.1 Brief introduction:Polyvinyl acetal (I) iswhite solid particle, non-toxic, non-harmful. It has many good properties, such as, good anti-weather ability, high transparency, good insulation, good film-formation ability, anti-impact at low temperature, cold weather resistance, water proofing and aging resistance.
1.2 Structure formula:
2. Technical indexes：
| Item | Index | |
| Type | TB-03TS | |
| Appearance | White powder or particle | |
| Particle size (through 20 mesh), % (m/m) | 100 | |
| Vinyl alcohol acetal, % (m/m) | - | |
| Volatile matter, % (m/m) | ≤3.00 | |
| Viscosity (20℃±0.2℃,10% ethanol solution), s | 3-4” | |
| Viscosity (20℃±0.2℃,10% ethanol solution), s | 25-40 | |
| Transparency, % | 430nm | ≥80 |
| 660nm | ≥90 | |
| Free acid (in HCl), % (m/m) | ≤0.05 | |
| Hydroxyl value, %（m/m） | 15-18 | |
3. Application: Polyvinyl acetal (I) has good film-formation ability and elasticity. Its film has many advantages, such as, high transparency, high toughness, good acid-resistance, good oil-resistance, etc. It can bond with glass, metal and ceramics well. In addition, it can disperse well into ink, pigment and dyestuff.
4. Package: Woven bag with inner plastic bag, 12.5 kg net each.
5. Storage: Stored at cool and ventilate place. Sealed preservation. Shelf life: 12 months. It is still available if he retest results of the properties are qualified after expired date.
6. Transportation: Avoid rain, moist and sun-baked. Don't mix with strong oxidizer.
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● More than 10 kinds of chemicals have been in R&D, such as nano-waterproof materials, oil additives and fine chemical intermediates.
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