PHOTO: Macrolex Gran - Brilliant colouring of amorphous and semi crystalline plastics

LANXESS’s Rhein Chemie Additives (ADD) business unit is showcasing its organic Macrolex Gran colorants for the brilliant colouring of amorphous and semi crystalline plastics. Thanks to their micro granule form, the colorants compare extremely favourably with powders and compact granules owing to their excellent dispersion and processing properties and safe handling.

Macrolex micro granules consist of hollow spheres that can be very easily crushed, which means they can be quickly, evenly and completely distributed and incorporated into the plastic. The excellent processability of the product is due to the fact that the hollow spheres comprise particularly small primary particles of between around two and ten micrometers depending on the colour. The good free-flowing properties of the 0.3mm spheres make precise metering easier and prevent clumping in the mixing process. The four times higher bulk density compared with powder pays dividends in processing, transport and storage alike.

Owing to its good metering and dispersion properties Macrolex Gran is primarily used for processing on extruder and injection moulding machines. The colorants are soluble in organic solvents and are highly suitable for colouring amorphous and semi crystalline plastics such as PS, PET, PC, ABS and PMMA.

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