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Excellent Water Resistance Polyvinyl Butyral Resin For Packaging Materials
Polyvinyl butyral resin have good water resistance, which is especially important in packaging materials.
Specification of PVB resin:
| Item | Volatile content | Non volatile content | Butyral content | Acetate content | Hydroxy content | 10% viscosity | Free acid |
| Unit | Wt-% | Wt-% | Wt-% | Wt-% | Wt-% | mpa.s | MgKOH/g |
| DR-50 | Max2 | ≥98 | 76-85 | ≤3.0 | 12-17 | 7-9 | Max0.5 |
| DR-40 | Max2 | ≥98 | 76-85 | ≤3.0 | 12-17 | 9-14 | Max0.5 |
| DR-30 | Max2 | ≥98 | 76-85 | ≤3.0 | 12-17 | 14-20 | Max0.5 |
| DR-20 | Max2 | ≥98 | 76-85 | ≤3.0 | 12-17 | 20-30 | Max0.5 |
| DR-20SP | Max2 | ≥98 | 76-85 | ≤3.0 | 12-17 | 25-40 | Max0.5 |
| DR-16 | Max2 | ≥98 | 76-85 | ≤3.0 | 12-17 | 30-55 | Max0.5 |
| DR-17 | Max2 | ≥98 | 76-85 | ≤3.0 | 12-17 | 35-60 | Max0.5 |
| DR-18 | Max2 | ≥98 | 76-85 | ≤3.0 | 12-17 | 80-110 | Max0.5 |
| DR-13 | Max2 | ≥98 | 76-85 | ≤3.0 | 12-17 | 160-260 | Max0.5 |
Characteristics of PVB resin:
1.PVB resin that is suitable for flexo and gravure printing, has good adhesion to polyolefins, metal, cellulose acetate, polyester, cellophane paper, polyamide and polystyrene film;
2.PVB resin as the foundation of the printing ink shows a low solvent resistance, good liquidity, good waterproof, which could be independently used as the basic resin, and could be used together with alcohol soluble nitrocellulose, alkyd resin, maleic resin and other natural polymer;
3.Suggested quantity added to: 18-30% for DR-40; 15-20% for DR-30; 10-15% for DR-20; 5-15% for DR-16/DR-17/DR-18;
4.Dissolve under normal temperature (25 ℃ ), the dissolution time is 30 minutes min., this characteristic has greatly increased the ink’s solubility;
5.PVB resin has good wettability and pigment dispersion;
6. Non-toxic, tasteless, odorless, no aromatic element, no heavy metal, no plasticizer, is the first choice of resin for environment friendly printing ink.
Storage condition of PVB resin:
Under a dry and cool (25 ℃ or less) condition, PVB resin can be stored for at least 12 months if sealed in original packaging.
Preventive measures: during the operation process of dissolving,appropriate take safety measures, and prevent electrostatic.
