JLK supplies high quality, U.S. produced hydrophobic precipitated and fumed silica for a wide variety of applications and industries.

Our products are manufactured as single and multi-phase composites to enhance properties such as dispersion, stability, hydrophobicity and functionality. Due to their unique particle characteristics, and large surface area, our fumed silica provides superior performance and benefits for many types of consumer and industrial applications such as adhesives, plastics, sealants, coatings, inks, toner, cosmetics, inks, food additives, and defoamers. Our products are approved for use per under 21 CFR §§ 173, 175, and 176.

Fumed Hydrophobic Silica

Our most popular product is hydrophobic fumed silica based on raw silica with a surface area of 200 m2/gr and treated with PDMS. The resulting product has a surface area ~130 m2/gr.

Our Chemistry

Treatment

Polydimethylsiloxane, Hexamethyldisilazane and Octamethylcyclotetrasiloxane surface treatments of our silica particles account for the hydrophobic behavior of our treated silicas. In most cases, these treatments determine the interactions of our silica particles with solids and liquids. The surface of our silica particles can be chemically modified by reacting various silanes and silazanes to give the required hydrophobicity necessary for your specific applications.