German colourant maker Rowasol launches biobased liquid colour range

Rowasol, a German additive producer based in Pinneberg, has launched GreenLine, a range of liquid colours for plastics with a carrier system containing more than 75% renewable raw materials. The colourants include plant-derived pigments from indigo, curcumin and radish extracts, alongside a plant-derived black and a mineral-based white, and are dosed at 0.5%-2.0% depending on the polymer.

Why this mattersHigher-biobased-content colourants give plastics converters, including packaging producers, a route to lower fossil content without changing dosing or processing equipment.

• Rowasol launched the GreenLine liquid colour range on 21 September 2026
• The carrier system contains over 75% renewable raw materials
• Colourants are derived from indigo, curcumin, radish extracts, plant-derived carbon black and mineral-based white
• Natural colourants are incorporated into a mineral to improve thermal stability during plastics processing
• Recommended dosage is 0.5%-2.0% depending on the polymer matrix
• Rowasol is developing further natural colour sources and higher biobased carrier content

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