Alkyd Resin for Offset Ink (Varnish Grade)
CAS Number: 68440-04-0
Oxidatively drying alkyd resin varnish specifically formulated as the vehicle component of sheetfed offset inks, providing controlled tack, ink-water balance, and oxidative drying with drier systems. Available in short, medium, and long oil lengths to suit different press speeds and paper types. Blends readily with rosin-modified maleic and phenolic resins to optimize print quality.
Technical Specifications
| appearance | Clear to pale amber viscous liquid |
| oil length (%) | 30–65 |
| color (Gardner) | ≤6 |
| viscosity (mPa·s) | 5000–40000 (25 °C) |
| acid value (mgKOH/g) | 5–15 |
Applications
- Sheetfed offset ink vehicles and varnishes
- Letterpress and relief printing ink binders
- Overprint varnishes for carton and label printing
- Industrial offset inks for metal decoration
- News and publication offset ink formulations
Key Features
- Controlled tack for reliable ink transfer on offset presses
- Fast oxidative drying when activated with Co/Mn drier systems
- Good ink-water balance for clean printing in offset process
- Flexible oil length options to suit coated and uncoated papers
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CAS Number
68440-04-0
Category
Printing Ink ChemicalsAvailability
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