PIGMENTS | COLOUR
is Lifolas M Black 114031 SAN for styrene acrylonti- rile (SAN) polymers as well as ABS, ABS/PC and ASA. The Lifolas range also includes additive masterbatches for laser marking of polyoxymethyl- ene (POM) and polyamides (PA). Ampacet’s ColorMark laser-marking additive masterbatch enables detailed lettering and designs on dark plastic surfaces, which have traditionally been difficult to mark. The additive produces permanent and weather-resistant colour marking in six standard colours (red, orange, yellow, green, blue and purple) as well as custom colours and is intended for use in PP, PS, ABS, PC, PA and other engineering resins. FDA food-contact and NIR-sortable formulations are also available. The company says that formulation chemistries and laser configurations can be customised for desired marking contrast and functionality. Tosaf says its new laser marking additives enable dark marking on both transparent and opaque backgrounds, light marking on dark backgrounds, grayscale marking, and black marking on transpar- ent gray backgrounds. The additives can be used with a range of polymers and fillers, including calcium carbonate, talc, titanium dioxide, and carbon black. “Notably, these additives achieve higher marking accuracy, requiring only a minimal dosage of a few percent, which represents a negligible increase in the raw material cost,” said Omri Mazar, Manager of the Special Additives Department at Tosaf. The marking additives are approved for food contact applications, including barcode marking on beverage caps and marking expiration dates or batch numbers on transparent food packaging.
Bio-based pigments A US bio-manufacturing startup company, Ourobio, is using waste sugars and proteins from food and agricultural processing streams as feedstock to co-produce biodegradable polyhydroxy alkanoate (PHA) polymer and biodegradable pigments in a fermentation bioreactor. “In trying to measure PHA production via colorimetric assay, we discovered that there was a side reaction – protein was being converted into precursors for pigment and eventually pigment,” said co-founder Alec Brewer. He said the pigments are indigoid derivatives
and that microbes can be engineered to produce a complete palette of colours. Indigo and its deriva- tives are thermostable in the temperatures used in plastic processing, and in early testing in a bench- top twin-screw extruder, they have been able to mix the pigments into PHA blends.
www.compoundingworld.com
Ampacet goes for celestial colours
Masterbatch producer Ampacet has introduced its Artemis Collection of translucent colours and effects which it says are “inspired by the wonders of the galaxy”. The masterbatches have been designed for injection moulded backlighting or dead-fronting applications, “leveraging advanced pigment technologies to create three-dimensional, crater-like surfaces”, according to the company. Compatible with PS and PP polymers, the Artemis Collection is suitable for a wide range of applications, including consumer electronics, home goods and décor, caps and closures and lighting. Available colours are called Cosmic Noir, Lunar Gold, Darkside, Amethyst Supernova, Midnight Stardust, and Aurora Emerald. Mercedes Landazuri, Ampacet Market Insight Manager, said:
“The collection is ideal for applications where visual appeal is paramount.”
“We have produced red, blue, and purple alongside PHA, and we’re working on other colours such as yellows, oranges, and greens. Indigo is already used widely in consumer goods and packaging, and, along with its derivatives, could be an alternative to inorganic pigments,” said Brewer.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.shepherdcolor.com �
https://eurocolour.org �
www.pigments.org �
www.penncolor.com �
www.sunchemical.com �
www.americhem.com �
www.avient.com �
www.lanxess.com �
www.tosaf.com �
www.heubach.com �
www.ampacet.com �
www.lifocolor.de �
www.ourobio.com
September 2024 | COMPOUNDING WORLD 25
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