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What is calcium stearate?

2025-09-11

Calcium stearate is a commonly used additive and has extensive applications in various fields. Here is a detailed introduction for you:

Industrial sector

Plastics Industry

● Processing of polyvinyl chloride (PVC): Calcium stearate is a non-toxic heat stabilizer for PVC, with excellent lubricating properties. It is widely used in soft products such as food packaging films and medical devices that have strict toxicity requirements; when combined with basic lead salts and lead soaps and used in hard products, it can increase the gelation speed. In addition, in the manufacturing of PVC plastic pipes, sheets, profiles, and films, calcium stearate helps prevent "coking" during the processing and also protects the finished film from being exposed to sulfurization and discoloration.

● Other plastic processing: It can be used in various plastic processing procedures, reducing friction and wear, and improving product quality. As an absorber of halogens in polyethylene and polypropylene, it reduces the impact of residual catalysts on color and stability; it can also be made into a lubricant for polyolefin fibers and a molding compound.

Rubber Industry

● In rubber processing, calcium stearate can be used as a softening agent and a plasticizer, and it can soften the rubber without affecting the vulcanization effect of the rubber.

Coatings and Adhesives Industry

● As a flatener and water-resistant agent for adhesives and coatings, it can enhance the performance of coatings and adhesives, making them have better gloss and water resistance.

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