Altri to acquire a majority stake in AeoniQ

Altri, leader in sustainable cellulosic pulp production, has signed an agreement to acquire a majority stake in AeoniQ, marking a decisive leap into sustainable textiles.

The Altri investment, including a capital increase, will allow building out commercial-scale AeoniQ™ production capacity, reinforcing its strategic vision to diversify into high-value, low-impact cellulosic applications. AeoniQ, a Swissbased cleantech spin-off of HeiQ Materials AG, has developed the world’s first climate-positive, biodegradable cellulosic filament yarn engineered to replace polyester and nylon. The world’s first industrial AeoniQ production unit will be built at Altri’s Caima plant in Constância, with operations expected to begin in 2026 and an initial annual production capacity of 1,750 tonnes. Ahead of this, a pre-industrial unit will be installed in Portugal to accelerate partnership development and prototype testing.

The joint venture brings together Altri’s industrial expertise and HeiQ’s technological innovation, with the backing of major brands such as Hugo Boss, MAS Holdings and The Lycra Company. The transaction remains subject to certain conditions precedent, but the parties expect the process to be completed in the second half of this year.