Product Introduction

Quaternary ammonium salt-18 hectorite is an organoclay, that is created by reacting hectorite clay with a quaternary ammonium compound. Hectorite, is a naturally occurring clay mineral, and is primarily composed of magnesium, lithium, silicon, oxygen, hydrogen, and sodium. When hectorite is modified with a quaternary ammonium compound, the resulting organoclay exhibits enhanced compatibility with organic substances, such as oils and silicones, commonly found in cosmetic formulations [1]. This modification improves the hectorite's dispensability and swelling capacity in these organic media.

Production Process

The production of Quaternium-18 hectorite typically involves a cation exchange process. First, hectorite clay is dispersed in water. A quaternary ammonium salt, such as Quaternium-18, is then added to the clay slurry. Through cation exchange, the quaternary ammonium ions replace the inorganic cations, like sodium, present in the interlayers of the hectorite. This process renders the clay surface organophilic. Finally, the modified clay is filtered, washed, dried, and milled to obtain the desired particle size [2]. This process ensures the quaternary ammonium compound is well distributed throughout the hectorite structure.

Efficacy and Function

Quaternary ammonium salt-18 hectorite functions primarily as a rheology modifier. It is capable of increasing the viscosity of cosmetic formulations, improving their stability, and preventing the settling of solid particles in suspensions [3]. The modified clay forms a three-dimensional network within the formulation, that provides thickening and suspending properties. Moreover, it can enhance the skin feel of products by imparting a smooth and non-greasy texture.

Application Scenarios

Quaternium-18 hectorite is widely used across various cosmetic applications, including:

  • Color cosmetics: Found in foundations, concealers, and mascaras to provide texture and prevent pigment settling.
  • Skin care products: Used in creams, lotions, and sunscreens to enhance viscosity and improve application properties.
  • Hair care products: Incorporated into conditioners and styling aids to improve texture and control [4].
  • Antiperspirants and deodorants: Helps to suspend active ingredients and control the consistency of the product.

Packaging and Transportation

Quaternium-18 hectorite is generally packaged in multi-layer paper bags with polyethylene liners, typically with a net weight of 25 kg per bag. It should be stored in a dry, well-ventilated area, away from moisture and extreme temperatures, to prevent clumping and maintain its performance characteristics. During transportation, it is important to protect the product from physical damage and contamination. No special requirements for transportation are generally needed.

Citations

[1] AkzoNobel Surface Chemistry. (n.d.). Rheology Modifiers. Retrieved from https://surfacechemistry.akzonobel.com/en/rheology/

[2] Bergaya, F., Theng, B.K.G., & Lagaly, G. (2006). Handbook of clay science. Elsevier.

[3] Wagle, R. (2013). Clay Nanocomposites for Drug Delivery and Tissue Engineering. Pan Stanford Publishing.

[4] L'Oreal Patent, US6596297B1, Cosmetic composition containing a nonionic surfactant, a quaternium-18 hectorite and a liquid fatty substance, process for its preparation and uses thereof. July 22, 2003.

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