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Good Chemical Resistance Polyvinyl Butyral Resin For Ink System
Polyvinyl butyral resin are usually white spherical porous particles or powders, and the coating film of PVB resin has good water resistance, oil resistance (resistance to aliphatic, mineral, animal and vegetable oils, but not to gon oil) and solvent resistance.
SPECIFICATIONS:
| Item | Volatile content,Wt-% | Non volatile content,Wt-% | Butyral content,Wt-% | Acetate content,Wt-% | Hydroxy content,Wt-% | 10% viscosity,mpa.s | Free acid,MgKOH/g |
| DR-50 | ≤2.0 | ≥98.0 | 76-85 | Max3.0 | 12-17 | 7-9 | Max0.5 |
| DR-40 | ≤2.0 | ≥98.0 | 76-85 | Max3.0 | 12-17 | 9-14 | Max0.5 |
| DR-30 | ≤2.0 | ≥98.0 | 76-85 | Max3.0 | 12-17 | 14-20 | Max0.5 |
| DR-20 | ≤2.0 | ≥98.0 | 76-85 | Max3.0 | 12-17 | 20-30 | Max0.5 |
| DR-20SP | ≤2.0 | ≥98.0 | 76-85 | Max3.0 | 12-17 | 25-40 | Max0.5 |
| DR-16 | ≤2.0 | ≥98.0 | 76-85 | Max3.0 | 12-17 | 30-55 | Max0.5 |
| DR-17 | ≤2.0 | ≥98.0 | 76-85 | Max3.0 | 12-17 | 35-60 | Max0.5 |
| DR-18 | ≤2.0 | ≥98.0 | 76-85 | Max3.0 | 12-17 | 80-110 | Max0.5 |
| DR-13 | ≤2.0 | ≥98.0 | 76-85 | Max3.0 | 12-17 | 160-260 | Max0.5 |
Characteristics of PVB resin:
1.Low viscosity 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.Low viscosity 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.Low viscosity 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.
Solvent selection:
| High Butyral and Low Viscosity PVB Resin | Regular Low Viscosity PVB Resin | ||
|
Alcohol | methyl alcohol | √ | √ |
| ethyl alcohol | √ | √ | |
| propyl alcohol | √ | √ | |
| butyl alcohol | √ | √ | |
| isobutyl alcohol | √ | √ | |
| diacetone alcohol | √ | √ | |
| ketone alcohol | √ | √ | |
| benzyl alcohol | √ | √ | |
|
Lipid | ethyl acetate | √ | |
| methyl ethyl ketone | √ | ||
| 3-Methoxybutyl acetate | √ | ||
| DBE DIBASIC ESTER | √ | ||
| Butyl glycolate | √ | ||
|
Ketone | butanone | √ | |
| methyl ethyl ketone | √ | ||
| MIBK | √ | ||
| cyclohexanone | √ | √ | |
Storage of PVB resin
Under a dry and cool (25 ℃ or less) condition, the product 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.
