Highest opacity and tint strength kaolin

Ultrex® kaolin has the highest opacity and tint strength of the BASF kaolin range. A blue undertone ensures cleaner pastel colours and whiter whites. These ultrafine, high brightness, kaolins are excellent choices for titanium dioxide extension and offer the formulator the potential for significant cost savings. 

Typical applications are decorative coatings (eggshell, satin and matt), inks and polymers. Read on for more information and get in touch with our technical sales team now to discuss this product range in greater detail.


    • Highest opacity kaolin.

    • Highest tint strength. High whiteness with blue undertone.

    • High brightness: 93% (Ultrex® HP) and 96% (Ultrex® 96) GE.

    • Ultra fine particle size.

    • Highly pulverized.


    • Easy to incorporate due to pulverization process.

    • Excellent potential for titanium dioxide extension with associated cost savings.

    • Wide formulation latitude - eggshell, satin and matt.

    • Blue undertone gives cleaner pastel shades and whiter whites.

Typical Applications

    • Aqueous and non-aqueous paints (architectural, decorative, roof etc.).

    • Plastics and rubber - can also reinforce.

    • Gravure and screen inks.

    • PVC pipes.

Featured grades with technical datasheets

A brief overview of the key grades is given below. You will find the Technical Datasheets (TDS) available for download. If you are looking for a Safety Datasheet (SDS) or Product Safety Information (PSI) then please get in touch by phone or via the contact buttons at the top of the page.

Should you not find what you are looking for here then please note that we have further grades available besides these. One of our Technical Sales team will be happy to help. All of the sales team are technically qualified and will be able to advise you on which product to choose. You can either call us, email us or fill in a quick form at the top of the page to get us to call you (Request a Callback). A sample can be requested via the button at the top of the page as well. Please note that by providing us with your contact details, you are agreeing for us to potentially contact you.

Related brochures & technical literature

You will find some of the key product brochures available for download below. There are more brochures available upon request. If you would like to discuss your enquiry further then please get in contact by phone or by filling in the "Request a Callback" form at the top of the page. Someone from the technical sales team will then call you within 24 hours, to discuss your project further.

Ultrex® HP - BASF's Highest Hiding Calcined Kaolin

An overview of the features and benefits possible with the use of Ultrex® HP in different decorative and architectural coating formulations. This document compares the performance with some of the other BASF kaolin grades.

Ultrex® HP - BASF's Highest Hiding Calcined Kaolin Brochure /