About us

Unipetrol RPA, s.r.o. (entity of Unipetrol Group) has been a traditional producer of CHEZACARB® AC for a long time. CHEZACARB® AC is a group of high-quality electro-conductive carbon blacks, which are applied as additives to facilitate final adjustments to the properties of plastic and rubber materials.  In response to market requirements for cost-effective electro-conductive materials, Unipetrol spent the last year searching for ways to utilize cost-effective types of CHEZACARB® AC and exploring methods to eliminate the influence of present (heavy) metals on potential deterioration of thermo-oxidative stability, while simultaneously preserving the rest of the required final product parameters.

Rigorous research and testing has yielded a solution in the form of a unique procedure used during the production of electro-conductive masterbatches, which Unipetrol supplies under the trademark MAKROPLUS® CC. These masterbatches are usable in all commonly used thermoplastics, such as PP, LDPE, HDPE, EVA, PA6, PS, PC, and POM. They can either be diluted with appropriate plastics, or directly processed through the use of most common plastic processing technologies, such as injection molding, extrusion, foil and container blow-molding, foam molding, etc. Moreover, as a result of the employment of metal deactivators, Unipetrol is able to remarkably enhance the thermal stability of its masterbatches.

In addition to the above mentioned masterbatches, Unipetrol can deliver specially developed concentrates on the CHEZACARB® AC basis, or tailor-made concentrates, to meet every customer’s specific needs and requirements.


The Unipetrol Group is the largest refinery and petrochemical company in the Czech Republic. It focuses primarily on crude oil processing, distribution and the sale of fuel and petrochemical products — particularly plastics and fertilizers. The group is a key player on both the Czech and Central European market in all of these fields. The Unipetrol Group includes refineries and production plants in Litvínov and Kralupy nad Vltavou, Paramo with the Mogul brand in Pardubice and Kolín, Spolana in Neratovice, and two research centres in Litvínov and Brno. Unipetrol also owns the Benzina network of petrol stations with 402 stations, which is the largest chain in the Czech Republic. Unipetrol is one of the largest companies in the Czech Republic in terms of turnover. The group created revenue of over CZK 122 billion last year and employs more than 4600 people. In 2005, Unipetrol became part of the PKN Orlen Group, the largest crude oil processor in Central Europe.