COLOUR | PIGMENTS
uses bio-based polymer carriers and pigments with the OK Compost certification. In addition, it uses non-petroleum-based lubricants. “We are looking at domestic and sustainable sourced pigment alternatives to reduce our dependence on import- ed colourants. Our sustainable pigments, fillers and domestic supply allows us to deliver the lowest LCA [lifecycle analysis] possible for this industry,” Haubert said. “For compostable plastics, a wide colour palette is available that allows for great design options from fiery reds to cool turquoise and all points in between.”
Above: Delta Tecnic says its cool pigments can reduce thermal increase in sun-exposed plastics by up to 30%
European standard for compostable materials,” the company said. “With growing global awareness around the environmental impact of plastic waste, industries are increasingly shifting toward biode- gradable and compostable materials. Our certified pigments enable manufacturers to create vibrantly coloured, compostable products without compro- mising on performance.” The certified colourants are: Sudaperm Orange
2917 (Pigment Orange 64), Sudaperm Pink 2991 (Pigment Red 112), Sudafast Blue 2764 (Pigment Blue 15:1), Sudafast Blue 2789 (Pigment Blue 15:3), Sudafast Green 2730K (Pigment Green 7), Suda- perm Yellow 2927 (Pigment Yellow 110) and Sudaperm Red 2963K (Pigment Red 170). The pigments are designed for use in biodegradable plastics, such as PLA, PHA, PBS, and PBAT. The latest from Grafe is the Biocolen product line for colouring of bio-based, compostable plastics, such as PLA, PHA, or PHBV. Grafe provides both standard and custom colours for bio-based plastics and offers support for the TÜV Austria certification process of compostable plastic end products. Grafe said it ensures that the ingredients used in its Biocolen masterbatches and com- pounds meet certification requirements and works toward not adversely affecting the testing of the end product. In particular, Grafe performs in-house tests for heavy metals to meet the limits specified in DIN EN 13432. The company offers a range of carrier materials, or customers can provide their own polymers to test suitability as carriers. A wide range of colours, including pastels and signal colours, offers design freedom. Mike Haubert, Managing Partner at compound and masterbatch supplier Mosaic Color and Additives, based in South Carolina, US, explained that for compostable applications, the company
20 COMPOUNDING WORLD | September 2025
Colour and additives combined Chroma Colour has launched three new colour masterbatches – an orange, red, and white – using a polyhydroxyalkanoate (PHA) bio-based polyester carrier resin that comply with ASTM D-6400/DIN EN13432 standards for compostability. Late last year, Chroma Colour introduced the
ChromaFresh line of concentrates, which combine colour with scent additives. The company says these concentrates are useful for consumer-focused appli- cations where they enhance sensory appeal and help differentiate products, as well as industries including automotive, healthcare and pet products, for which they can be used to neutralise unpleasant odours. Another use is in masking unwanted odours in post-consumer recycled materials. The company also launched ChromaXLPEUltra high-intensity colour concentrates for crosslinked polyethylene (XLPE) applications used in harsh environments, such as construction, mining, refineries, nuclear/hydrogen plants, transcontinen- tal power transmission, and aerospace, as well as the growing automotive and transportation markets such as electric vehicles and hydrogen. The concentrates combine pigments and additives that can be used at low loading levels (eg 1-2%) for VW-1 vertical flame ratings, the company said. Late last year, Illinois, US-headquartered Chroma
Colour acquired California-based masterbatch supplier Spectra, expanding Chroma Colour’s geographic reach and product offerings. Spectra has been supplying compounds, colourants, and ad- ditives for more than 45 years, and serves markets including medical, healthcare, agriculture, consumer products, among others, the company said. Tosaf launched a portfolio of masterbatches combining UV stabilisers and colours to meet application-specific requirements in soil mulch films, which are exposed to degradation by UV light and varying levels of agricultural chemicals. The company offers three types of UV stabilisers that depend on the level of chemical exposure. Colour
www.compoundingworld.com
IMAGE: DELTA TECNIC
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