Product Introduction

Quaternary ammonium salt-18 bentonite, also known as quaternium-18 bentonite, is an organically modified clay. It is created by reacting bentonite clay with a quaternary ammonium compound. This modification alters the clay's surface properties, making it hydrophobic. Quaternium-18 bentonite is widely utilized in the cosmetic industry. It is primarily used for its rheological properties, offering viscosity control and stabilization in formulations. Its hydrophobic nature allows it to interact effectively with oils and silicones.

Production Process

The production of quaternary ammonium salt-18 bentonite begins with the selection of high-quality bentonite clay. The bentonite clay is then purified and processed to achieve the desired particle size. A quaternary ammonium compound, such as dimethyl distearyl ammonium chloride, is reacted with the bentonite clay. This reaction involves ion exchange, where the quaternary ammonium ions replace the inorganic cations on the clay surface [1]. The resulting organically modified clay is then washed, dried, and milled to a fine powder. Quality control measures ensure the final product meets specifications for purity, particle size, and performance.

Efficacy and Function

Quaternium-18 bentonite functions primarily as a rheology modifier in cosmetic formulations. It enhances viscosity, providing a thickening effect that improves the texture and stability of products. Its unique structure helps to suspend solids, preventing settling in suspensions and emulsions [2]. It also imparts a smooth, luxurious feel to creams and lotions. Furthermore, quaternium-18 bentonite contributes to improved oil control in formulations.

Application Scenarios

Quaternium-18 bentonite is utilized in a variety of cosmetic and personal care applications. It is commonly found in creams and lotions, where it provides thickening and stabilization. It is also used in makeup products, such as foundations and concealers, to improve texture and application. In hair care, it can be found in conditioners and styling products. Sunscreen formulations benefit from its ability to enhance viscosity and prevent the separation of oil and water phases. Its oil-absorbing properties make it suitable for use in products designed for oily skin.

Packaging and Transportation

Quaternium-18 bentonite is typically packaged in multi-layer paper bags with polyethylene liners, or in bulk bags, to prevent moisture absorption. The packaging size usually ranges from 25 kg to 500 kg, depending on customer requirements. During transportation, it should be protected from moisture and extreme temperatures. It should be stored in a cool, dry place to maintain its quality and prevent clumping. Standard safety precautions should be observed during handling, including the use of personal protective equipment.

Citations

[1] Bergaya, F., Theng, B.K.G., Lagaly, G. (2006). Handbook of Clay Science. Developments in Clay Science, 1, 383-458.
[2] Bohidar, H. B., Jena, S. K., & Kumar, P. (2012). Rheology of cosmetic emulsions. Cosmetic science and technology: Theoretical principles and novel approaches, 59-74.

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