Natural Gum Rosin WW Grade Colophony Pine Rosin
Product Name
Colophony, Pine rosin, Pinus Masoniana Rosin, Pinus Elliottii
Type
WW Grade
Chemical Properties
Gum rosin is a transparent light yellow or transparent yellow solid. It is made from pine trees.
It is a kind of natural resin, mainly composed of various kinds of resin acids; it can be dissolved easily in many organic solvents, and has special chemical activity.
Gum rosin also called colophony or Greek pitch, is a solid form of resin obtained from pines and some other plants, mostly from conifers. It is produced by heating fresh liquid resin to vaporize the volatile liquid terpene components. It is semi-transparent and varies in color from yellow to black.
Specifications
| Test Items | 1st Grade WW |
|
Appearance & Color |
Transparent light yellow |
|
Softening Point (R&B) ℃ |
≥76 |
|
Acid value. (Mg KOH/g) |
≥165 |
|
Un sop. matter（%） |
≤8.0 |
|
Alcohol Insol. Substance (%) |
≤0.03 |
|
Ash (%) |
≤0.02 |
Application
- Colophony used as a binder component of adhesive, includes rubber-based adhesive, synthetic resin based adhesive and plant base adhesives.
- Pine rosin is used for paper sizing, improving the strength and smoothness, increasing wear resistance.
- Grade WW Rosin used for thermoplastic coating, such as road marking.
- Used as vehicle body and enhancing the adhesion in ink industry.
- Comestic and depilatory.
