Polymerized Rosin 120 AJ18 minimal discoloration with lead acetate anti-crystallization properties compared to natural rosin
Polymerized rosin is produced through esterification with pentaerythritol. It is a yellowish-brown amorphous solid characterized by high molecular weight, elevated softening point, high purity, non-crystalline properties, high acid value, low hot water extract content, excellent oil solubility, minimal discoloration with lead acetate, and a higher softening point than natural rosin.
Series | Testing Methods | JT-90 | JT-95 | JT-100 | JT-115 | JT-120 | JT-140 | JT-150 |
Appearance | Visual Inspection | Lumps, Granules | Block | Block | Lumps, Granules | Lumps, Granules | Flakes, chunks, granules | Granule |
Transparent | Visual Inspection | Transparent | Transparent | Transparent | Transparent | Transparent | Transparent | Transparent |
Color | Iron-Cobalt Method | Yellow | Light yellow | Yellow | Yellow | Yellow | Yellow | Yellow |
Softening Point | Universal Method | 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 Insolubles | (%) ≤ | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 |
Hot Water Solubles | (%) ≤ | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
- Parameters
Series | Testing Methods | JT-90 | JT-95 | JT-100 | JT-115 | JT-120 | JT-140 | JT-150 |
Appearance | Visual Inspection | Lumps, Granules | Block | Block | Lumps, Granules | Lumps, Granules | Flakes, chunks, granules | Granule |
Transparent | Visual Inspection | Transparent | Transparent | Transparent | Transparent | Transparent | Transparent | Transparent |
Color | Iron-Cobalt Method | Yellow | Light yellow | Yellow | Yellow | Yellow | Yellow | Yellow |
Softening Point | Universal Method | 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 Insolubles | (%) ≤ | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 |
Hot Water Solubles | (%) ≤ | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
I. Product Overview:
Polymerized rosin is produced through esterification with pentaerythritol. It is a yellowish-brown amorphous solid characterized by high molecular weight, elevated softening point, high purity, non-crystalline properties, high acid value, low hot water extract content, excellent oil solubility, minimal discoloration with lead acetate, and a higher softening point than natural rosin.
II. Product Advantages:
1. High molecular weight and elevated softening point enhance adhesive retention and cohesion in tape applications.
2. Superior oxidation resistance, gloss retention, and anti-crystallization properties compared to natural rosin.
CAS: 65997-05-9
Specification
Series | Testing Methods | JT-90 | JT-95 | JT-100 | JT-115 | JT-120 | JT-140 | JT-150 |
Appearance | Visual Inspection | Lumps, Granules | Block | Block | Lumps, Granules | Lumps, Granules | Flakes, chunks, granules | Granule |
Transparent | Visual Inspection | Transparent | Transparent | Transparent | Transparent | Transparent | Transparent | Transparent |
Color | Iron-Cobalt Method | Yellow | Light yellow | Yellow | Yellow | Yellow | Yellow | Yellow |
Softening Point | Universal Method | 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 Insolubles | (%) ≤ | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 |
Hot Water Solubles | (%) ≤ | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
Product Applications:
Widely used in the adhesive industry, paint and coating industry, rubber industry, soap and wax products industry, flux industry, paper industry, electrical industry, building materials industry, violin performance, food industry, and fixative production.
V. Product Packaging:
Products are packaged in galvanized iron drums with a net weight of 225 kg per drum, or in paper bags with a net weight of 25 kg per bag. Custom packaging is available upon customer request.
VI. Important Notice:
Free samples are available for testing.
Supplementary Information:
1. Adhesive Industry
Adhesives based on rosin esters and hydrogenated rosin esters are commonly used as hot-melt adhesives, pressure-sensitive adhesives, and rubber tackifiers.
2. Paint and Coatings Industry
Rosin readily dissolves in various organic solvents, forms films easily, and imparts gloss, making it one of the fundamental raw materials for paints and coatings. In paints, rosin enhances luster, accelerates drying, and produces a smooth, durable film.
3. Printing Ink Industry
Rosin primarily functions as a pigment carrier in printing inks while improving ink adhesion to paper. Without rosin, printed text appears dull and blurred.
4. Rubber Industry
In rubber manufacturing, rosin acts as a plasticizer to enhance elasticity. Potassium soap of rosin can be used in synthetic rubber production.
5. Soap and Wax Products Industry
When boiled with soda ash or caustic soda, rosin forms rosin soap. This soap exhibits strong cleaning power, high water solubility, fat-dissolving properties, and excellent foaming ability. Rosin's adhesive properties prevent soap from cracking and deteriorating due to acidification.
6. Flux
Metal surfaces exposed to air form an oxide layer, thicker at higher temperatures. This layer inhibits liquid solder's wetting action on metal, similar to how oil on glass prevents water from wetting it. Flux is a specialized material designed to remove this oxide layer, also known as a soldering aid. Flux serves three primary functions:
A. Removing the oxide layer: This occurs through a reduction reaction initiated by substances within the flux, which breaks down the oxide layer. The reaction products form suspended dross that floats on the solder surface.
B. Preventing oxidation: When melted, the flux floats on the solder surface, forming a barrier layer that prevents oxidation of the soldering area.
C. Reducing surface tension: It enhances solder fluidity, facilitating solder wetting of the workpiece.
7. Paper Industry
Rosin is used in the paper industry as a papermaking binder. Rosin reacts with caustic soda to form rosin sodium soap, which serves as a sizing agent. When mixed with pulp and alum, the rosin transforms into water-insoluble free resin acid particles that adhere to small fibers. As the pulp rolls over heated cylinders during drying, the rosin softens and fills the spaces between fibers—a process called “sizing” or “sizing agent application.” After sizing, paper gains enhanced water resistance, prevents ink penetration, improves strength and smoothness, and reduces dimensional shrinkage.
8. Electrical Industry
A mixture of 35% rosin and 65% gloss oil forms insulating oil used as a protective coating on cables, providing insulation and heat resistance. Rosin blended with Bakelite and other synthetic resins serves as insulating varnish.
9. Building Materials Industry
In the building materials industry, rosin is primarily used as a foaming agent for concrete and as an adhesive for decorative floor tiles. It also serves as a binder for vinyl asbestos tiles. When blended with linseed oil, calcium carbonate, charcoal, pigments, and other components, rosin can produce carpet tiles.
10. Violin Playing
Since violin strings are made of metal wire, slippage is highly likely during performance. Rubbing rosin onto the bow 3-4 times increases friction and reduces the risk of slipping.
11. Food Industry
Hydrogenated rosin glycerides are heated and melted with natural gum arabic, waxes, vinyl acetate, etc. After adding flavorings, sugar, and colorants, the mixture is blended to produce chewing gum. In slaughterhouses, after mechanical de-hairing of pigs, cattle, and sheep, residual hair on the animal's body and head can be removed using a de-hairing agent composed of 88-94% molten rosin and 6-12% cottonseed oil.
12. Preparing Fixing Solution
Leveraging rosin's solubility, volatility, and ability to rapidly form a “strong, transparent film” upon evaporation, artists typically prepare their own ‘fixing’ solution to protect paintings and prevent smudging of “sketches.” The formula consists of: one part rosin powder, nine parts alcohol or xylene solvent. Place the rosin in a well-sealed glass container, pour in the alcohol or xylene, cover tightly, and allow to dissolve for two days. To use, shake well and pour into a spray bottle. Spray evenly onto the painting from about 8 inches away. It evaporates as soon as it's applied and dries completely within minutes, preventing smudging. Note: Do not use too much rosin, as it will cause yellowing and dullness!
REMARK |
The above information is believed to be accurate and presents the best explanation currently available to us. We assume no liability resulting from above content. The technical standards are formulated and revised by customers’ requirement and us, if there are any changes, the latest specification will be executed and confirmed in the contract. |
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Polymerized Rosin 120 AJ18 minimal discoloration with lead acetate anti-crystallization properties compared to natural rosin
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