UV/Visible Transmittance Curves of TiO2 of various Primary Particle Sizes
Non-Nano ZnO (STEM picture)
Transparency of TiO2 dispersions of various Primary Particle Size
Low viscosity dispersions with a high pigment loading can be achieved
Kobo Products offers various Titanium Dioxide and Zinc Oxide Dispersions and Powders. These Attenuation Grade Dispersions are available in various carriers and provide low whitening and SPF or yield an optimal efficacy against UVA and/or UVB. Kobo also offers Titanium Dioxide, Zinc Oxide, Transparent Iron Oxides and Non-Nano Composite Technology that may contain inorganic and organic surface treatments to improve their dispersion in formulas and physical and chemical stability.
  • High Solids® and High Speed™ Dispersions

    Attenuation Grade TiO2 Dispersions

    Titanium dioxide (TiO2) is a well known pigment, because of its high refractive index. It also functions as an effective UV absorber when the primary particle size is under 100 nm. Titanium dioxide is ideal for formulating mild or hypoallergenic sun care products for UVA/UVB protection for babies and children, and consumers with sensitive skin. It's the physical and chemical stability of titanium dioxide, which differentiates this filter from organic UV absorbers. Kobo specializes in the custom formulation and dispersion of TiO2. We offer a wide selection of titanium dioxide dispersions that include various particle sizes, surface treatments, and a wide range of carriers, including volatile solvent bases.


  • Attenuation Grade ZnO Dispersions

    Zinc Oxide is used in cosmetics primarily as a skin protectant and for UV attenuation. It is ideal for formulating mild or hypoallergenic sun care products for UVA/UVB protection for babies and people with sensitive skin. Zinc Oxide is available in a wide range of primary particle sizes and varying optical properties. Kobo specializes in the custom formulation and dispersion of zinc oxide. We offer a wide selection of ZnO dispersions that include various particle sizes, surface treatments, and a wide range of carriers, including volatile solvent bases.


  • Volatile Non-D5 Dispersions TiO2 and ZnO

    There is a current trend in the market to move away from volatile cyclic silicone products, namely Cyclopentasiloxane. Kobo is a global leader in pigment dispersions including attenuation grade and pigmentary grade Titanium Dioxide, Zinc Oxide, Iron Oxides, and Organic Pigments. In addition to offering these pigments in cyclic silicones, several Volatile Non-D5 options are available that have properties that are similar to cyclic silicones. Based on many years of experience, Kobo has carefully selected carriers and dispersants that mimic the volatility of cyclic silicones. These dispersions continue to provide transparency and protection from UVA/UVB light.


  • Attenuation Grade TiO2 & ZnO (Powder Form)

    UV Pigments (Attenuation Grade TiO2 in Powder Form)

    Attenuation grade TiO2 often has a size of less than 100 nm. Surface coated TiO2 with a primary particle size of 15 nm and 35 nm are widely used for UV protection nowadays.
    TiO2 with a primary particle size of 10 nm is the latest development in TiO2 technology. They can be ground into finer particle and give higher UVB protection and better transparency.
    Attenuation grade TiO2 with a variety of surface treatments are now available for an easier dispersion in a wide variety of carriers.


  • UV Pigments (Attenuation Grade ZnO in Powder Form)

    Because of the relatively lower reflective index, ZnO of a large size can be used in a formula without causing significant whitening. Nonetheless, ZnO of smaller size will give a better transparency, more UVB protection and, in general, more UVA protection when ZnO powder is used directly in a formula.


  • Non-Nano TiO2, ZnO and Composite

    Non-Nano TiO2 Powders

    Kobo offers a range of titanium dioxide products, where the particle sizes are greater than 100nm when measured by light scattering sizing. These non-nano TiO2 are available coated with inorganic and organic surface treatments.


  • Non-Nano TiO2 Dispersions

    Non-nano TiO2 are also available dispersed in various vehicles for easier use in formulating sunscreens. These products have been designed to help formulators develop sunscreen products with high SPF/PFA and transparency without nanoparticles.


  • Non-Nano ZnO Powders

    Kobo offers a grade of Zinc Oxide, where the primary particle size is greater than 100nm when measured by image analysis. This non-nano ZnO is available coated with either organic or inorganic surface treatments.


  • Non-Nano ZnO Dispersions

    Non-nano ZnO are also available dispersed in various vehicles for easier use in formulations. They will help formulators develop sunscreen products with broad spectrum protection without nanoparticles.


  • Non-Nano Composites

    Kobo offers a new patent pending product; Composite ACT-50. This composite powder contains dispersed attenuation grade TiO2 entrapped within a micron size Acrylates Copolymer matrix. Kobo’s process reduces the agglomeration of TiO2 aggregates which enables us to create a product that can offer high SPF efficacy, low whitening effect and better tactile properties. Product is also available made with Zinc Oxide, Composite ACZ-50.


  • SPF Boosters

    SunBoost ATB™

    SunBoost ATB™ is a proprietary mixture of antioxidants, anti-irritant and anti-inflammatory agents. When used in sunscreens in combination with organic and/or inorganic UV Filters, SunBoost ATB™ shows an increase in SPF and PFA scores by more than 30%.


  • Infrared Protection

    IR Blockers

    Infrared radiations, in particular near infrared (IR-A), have the ability to penetrate deep into the dermis. Recent studies have shown they generate free radicals and produce other harmful biological effects to the skin resulting in aging and wrinkles.
    Kobo has screened numerous particulate materials and selected two large size titanium dioxide which showed a great capacity to block IR-A. These materials are offered with a variety of surface treatments.