Polymerized rosin is formed by esterification of pentaerythritol and is a yellowish-brown amorphous solid. It features a large molecular weight, high softening point, high content, no crystallization, high acid value, low hot water soluble matter content, good oil solubility, light lead acetate discoloration, and a higher softening point than rosin.
Series | Detection method | JT-90 | JT-95 | JT-100 | JT-115 | JT-120 | JT-140 | JT-150 |
Appearance | Visual inspection | Blocks, granules | block | Blocks, granules | Blocks, granules | Blocks, granules | Slices, blocks, granules | grain |
'Transparent' | Visual inspection | 'Transparent' | 'Transparent' | 'Transparent' | 'Transparent' | 'Transparent' | 'Transparent' | 'Transparent' |
Color | Iron-cobalt method | yellow | Light yellow | yellow | yellow | yellow | yellow | yellow |
Softening point | Global Law | 90 | 95 | 100 | 115 | 120 | 140 | 150 |
Acid value | mgKOH/g≥ | 165 | 165 | 145 | 145 | 145 | 140-145 | 140 |
Solubility | With toluene (1:1 | Clear | Clear | Clear | Clear | Clear | Clear | Clear |
Ethanol-insoluble substance | (%)≤ | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 |
Hot water dissolved substances | (%)≤ | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
Series | Detection method | JT-90 | JT-95 | JT-100 | JT-115 | JT-120 | JT-140 | JT-150 |
Appearance | Visual inspection | Blocks, granules | block | Blocks, granules | Blocks, granules | Blocks, granules | Slices, blocks, granules | grain |
'Transparent' | Visual inspection | 'Transparent' | 'Transparent' | 'Transparent' | 'Transparent' | 'Transparent' | 'Transparent' | 'Transparent' |
Color | Iron-cobalt method | yellow | Light yellow | yellow | yellow | yellow | yellow | yellow |
Softening point | Global Law | 90 | 95 | 100 | 115 | 120 | 140 | 150 |
Acid value | mgKOH/g≥ | 165 | 165 | 145 | 145 | 145 | 140-145 | 140 |
Solubility | With toluene (1:1 | Clear | Clear | Clear | Clear | Clear | Clear | Clear |
Ethanol-insoluble substance | (%)≤ | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 |
Hot water dissolved substances | (%)≤ | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |





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