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.
