The analysis and adjustment of chemical treatments for metal surfaces

Approaching the future while protecting the environment

Leather&Luxury ha intervistato Coline Neliàs, InLeather&Luxury interviewed Coline Neliàs, the International Product Manager of the precious metals sector of the Coventya group, which develops, produces, and distributes speciality chemicals for surface treatments.

What have your industry’s best R&D achievements been in recent years?

«Sustainable electroplating often amounts to the elimination of toxic components such as SVHCs (Substances of Very High Concern). As formulators of electroplating processes, we have a 360-degree vision that goes beyond this, such as the working temperature of the processes to limit power consumption, or the acidity/alkalinity of the
chemicals to streamline their disposal. One of our latest successful developments is AURALLOY 480 LF, which provides a glossy white bronze deposit at a lower temperature (45°C instead of 60°C). The process is also available in a sodium base, which offers an extended life on account of the management of degradation product disposal.
Our latest technologies take the entire electroplating process into consideration, such as hypoallergenic sequences with lower energy consumption and a lesser use of precious metals, as well as innovative treatments such as the ANTIOX range with a surface passivation composed of nanotechnology that offers greater resistance to corrosion and therefore consents to the reduction or elimination of intermediate palladium plating».

Luxury brands are increasingly demanding in terms of the environment, but also in terms of aesthetics: how do you combine these two requirements?

«Coventya has always sought out short and longterm R&D projects that also guarantee the aesthetic quality of the finished article. Chromic acid free metallization of plastic is a concrete example of the combination of aesthetics and performance. Today, Coventya formulates and supplies a hypoallergenic range compatible with fashion articles, and free of CrVI. The finished product boasts the same performance that was once achieved with processes that were hazardous to the environment and the operator, especially in terms of adherence to the galvanic cycle and corrosion resistance. The target
for the next 10 years will be to find a viable alternative to bronze: a bronze layer is currently obtained using cyanide-based electrolytes, a substance that is toxic if ingested and highly dangerous to the environment if spilled into the soil. The alternatives are being finalised and foresee additional protection».

Contact Coventya

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