From 8th April, 2008, our conductive polymer BAYTRON will only be available under the name CLEVIOS.

This is a change of name only, as the manufacturing process, product quality, service, technical experts and commercial contacts remain completely the same. We have changed the name because of the separation of our company from the Bayer group. All patent rights to BAYTRON products are with H.C. Starck, while Bayer AG has retained the naming rights for BAYTRON – thus, making this name change necessary.

EDT or EDOT stand for 3,4 Ethylenedioxythiophene, sold under the trade name CLEVIOS M

PEDT or PEDOT stand for Poly(3,4-ethylendioxythiophene) sold under the trade name CLEVIOS P.

• Conductive Polymer
• Transparent
• Safe handling
• Chemically stable
• Easy to use polymer dispersion in water or  in-situ polymerisation
• Tailored product range for specific applications
• Sales Product manufactured in large scale

No, CLEVIOS P is always water based.

No, as it is a water based product you cannot use it in a Masterbatch.

Maximum Conductivity depends from the formulation. With 5% DMSO
you can get approx. 1000 S/cm or 100 Ohm at 100nm film thickness.

Yes, on request.

The typical drying temperature is > 80°C.

The best way is to e-mail your enquiry to us indicating your application field, and what properties are important for you – the material, the product purity required, key levels of element impurities and the particle size.

Ohms/square is a term that is widely used to describe the Surface Resistivity (r ) of a material.  The electrostatic discharge (ESD) association describes the characteristic as follows:  "For an electric current flowing across a surface, the ratio of DC voltage drop per unit length to the surface current per width. In effect, the surface resistivity is the resistance between two opposite sides of a square and is independent of the size of the square or its dimensional units. Surface resistivity is expressed in Ohms/square." [From: The ESD Association Glossary, ESD-ADV 1.0-1994 (1)]

You can take the information from this web site. For a formal specification, please email us or submit the online inquiry form.

Order through our local sales office or e-mail us. The product range is broad so correct product selection is critical.

H.C. Starck does not generally provide free samples of any of the CLEVIOS products, but you can order small quantities. Also, some of the CLEVIOS products are available in research quantities from Sigma-Aldrich.

We have technicians in Europe, North America and Asia. Please e-mail us and we will forward the information to our regional specialists.

E –mail with your request. Included product volume and over what time period the material is required for.

Yes.  A copy of our certificate is available on request .

Unfortunately we have no water-free solvent systems available for the CLEVIOS P products.  The CLEVIOS P material is a polymer composite/complex of PEDOT (a hole-doped electrically conductive polythiophene) and PSSA ( a high molecular weight polystyrenesulfonic acid)

The work-function determines the energy necessary to remove an electron from the sample-surface and can therefore be seen as the energy of the HOMO.  Several groups, ie. the Cambridge University. have made work function measurements and determined the energy (for CLEVIOS P VP AI 4083) to be 4.8-5.2 eV (e.g. T. M. Brown et al.,  Appl. Phys. Lett. 75 (1999) 1679).