Rosin Size Emulsion
CAS Number: 8050-09-7
Rosin size emulsion is a traditional acidic internal sizing agent derived from natural rosin, used primarily in acidic papermaking systems with alum as the fixing agent. It provides good water resistance and printability at economical cost. Fortified rosin sizes offer improved sizing efficiency and are available in both anionic and cationic forms.
Technical Specifications
| pH | 6.5–8.5 |
| appearance | White to light yellow emulsion |
| solid content (%) | 50±2 |
| viscosity (mPa·s, 25°C) | 100–500 |
Applications
- Acidic internal sizing of newsprint and offset paper
- Corrugating medium and liner board sizing
- Writing paper and tissue sizing
- Paperboard and kraft paper hydrophobization
- Recycled fiber paper sizing
Key Features
- Natural rosin base with proven sizing performance
- Compatible with alum fixing system in acidic conditions
- Cost-effective sizing for commodity paper grades
- Available in anionic and cationic emulsion grades
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