Pentaerythrityl Tetrastearate, with the CAS number 115 - 83 - 3, is a white to off - white powder or flake. It is an ester formed from pentaerythritol and stearic acid. This compound has a high melting point, typically ranging from 60 - 65°C, and a relatively low solubility in water. However, it is well - soluble in organic solvents such as chloroform, benzene, and toluene.
Its molecular formula is C77H148O8, and the molecular weight is approximately 1201.99 g/mol. The product is often produced through an esterification reaction between pentaerythritol and stearic acid under specific reaction conditions, and our factory supplies it with high purity and quality at the best price in the market.
1. **Plastics Industry**: Pentaerythrityl Tetrastearate is widely used as a lubricant and release agent in the plastics processing industry. It can improve the flow properties of plastics during extrusion, injection molding, and calendering processes. By reducing the friction between the plastic melt and the processing equipment, it helps to prevent sticking, improve the surface finish of the final products, and enhance the overall processing efficiency.
2. **Rubber Industry**: In the rubber industry, it can act as a processing aid. It helps to improve the dispersion of fillers in the rubber compound, reduce the viscosity of the rubber, and enhance the mold - release performance during rubber molding. This leads to better - quality rubber products with improved mechanical properties.
3. **Cosmetics Industry**: Due to its emollient properties, it is used in various cosmetic formulations such as creams, lotions, and lipsticks. It can provide a smooth and silky texture to the cosmetic products, improve their spreadability, and enhance the moisturizing effect on the skin.
1. **Plastics Processing**: When using Pentaerythrityl Tetrastearate in plastics processing, it can be added directly to the plastic resin during the mixing stage. The recommended dosage is usually in the range of 0.1 - 1% by weight of the plastic resin, depending on the type of plastic and the specific processing requirements. It should be thoroughly mixed with the resin to ensure uniform distribution.
2. **Rubber Compounding**: In rubber compounding, it can be incorporated into the rubber mixture during the mixing process on a two - roll mill or an internal mixer. The addition amount is typically around 0.5 - 2% by weight of the rubber compound. Care should be taken to ensure that it is well - dispersed in the rubber matrix.
3. **Cosmetic Formulation**: For cosmetic products, it can be added to the oil phase of the formulation during the heating and melting stage. The appropriate amount depends on the specific formulation and the desired product properties, usually in the range of 1 - 5% by weight of the total formulation.
1. **Polypropylene Injection Molding**: A plastic products manufacturer was facing issues with poor surface finish and high mold - sticking problems during the injection molding of polypropylene parts. After adding 0.5% Pentaerythrityl Tetrastearate to the polypropylene resin, the flow of the plastic melt improved significantly. The molded parts had a smooth surface, and the mold - sticking problem was completely eliminated. This led to an increase in production efficiency by reducing the cycle time and the number of defective products.
2. **Natural Rubber Tire Production**: A tire manufacturing company was struggling with the dispersion of carbon black in the natural rubber compound, which affected the mechanical properties of the tires. By adding 1% of Pentaerythrityl Tetrastearate to the rubber compound, the dispersion of carbon black improved, and the viscosity of the rubber decreased. The resulting tires had better wear resistance and mechanical strength, meeting the high - quality standards of the market.
3. **Moisturizing Cream Formulation**: A cosmetic company developed a new moisturizing cream. By incorporating 3% Pentaerythrityl Tetrastearate into the oil phase of the cream, the cream had a more luxurious and silky texture. It spread easily on the skin, and users reported a long - lasting moisturizing effect, which enhanced the market competitiveness of the product.
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