CHT Sustainability Report 2020


Circular economy


With TUBINGAL RISE, CHT has successfully introduced the first textile softener based on recycled silicones and emulsifiers from renewable raw materials to the market. The silicone oil in use consists of used silicone materials that have been converted into a recycled silicone oil via a complex treatment and cleaning process. The hydrophilic silicone softener can be applied to all textiles and ensures a special core softness. Used on recycled fibers, the textile can be completely recycled again after use.

The responsible use of raw materials has reached the awareness of consumers and trade, which is why more and more industrial sectors are asking for recyclable production processes and products. In 2019, CHT has defined terminology and test criteria for the most important topics within the scope of the circular economy. The topic of recycling raw materials was intensively considered. In 2020, the expansion of the use of recycled raw materials will be considered.


Bio-based products are derived from plants, animals and other renewable agricultural, marine and forestry materials. CHT aims to use raw materials from sustainable cultivation.

Figures: percentage (C14 –mass) of bio-based materials in the product.

Recycled materials are products, materials or substances which are derived from waste. Waste is either recycled for the original purpose or up-/down-cycled.

Specification: Percentage (mass) of recycled materials in the product.

Biodegradability is defined as the fact that a material can be biologically degraded in aqueous systems under anaerobic or aerobic conditions. Depending on the environmental conditions CO2, H2O, methane, biomass and mineral salts are released in this process. Test criteria OECD 302B (aerobic) (elimination and mineralization). Criteria is fulfilled if more than 70% are decomposed within 28 days (yes/no criteria). Criteria for anaerobic degradation will be added, if available.

Criteria for anaerobic degradation will be added, if available.

Compostability describes the degradation process of organic materials via a microbial digestion by soil organisms for transforming these materials into compost.

CHT recommends testing compostability according to DIN CertCo.

DIN CertCo test criteria in accordance with DIN EN 13432 on final products such as e.g. T-shirts, coated paper, laminate floors, etc. All four criteria have to be fulfilled:

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