PATENTS

Patents

At Esseco, we believe innovation is the key to transforming industrial chemistry in a sustainable and responsible way.

Our projects and patents stem from continuous investment in research and development, with the goal of optimizing production processes, reducing environmental impact, and valorizing resources that would otherwise be discarded. Through solutions focused on the circular economy and energy recovery, we work every day toward more efficient, low-emission chemistry.

Sodium Hydrosulfite

Since 2020, the Sodium Hydrosulfite / Sodium Dithionite production plant has been the first prototype developed and installed following the Esseco patent. Sodium Hydrosulfite / Sodium Dithionite is a key reducing agent used in the chemical, textile, and paper industries. The Esseco patent outlines an innovative production process.

Compared to the more common Mitsubishi process, the Esseco patent involves the purification of mother liquors through the separation of Sodium Thiosulfate Pentahydrate, which is then reused in the production cycle.

This results in a drastic reduction in energy impact and the near-total elimination of environmental impact.

What the Patent Covers