COLOUR | PIGMENTS
dent that the company’s inorganic pigments will continue to be able to be used safely. Pigment requirements are not quite so demand- ing in the area of bio-based polymer compounds — which is another trending area in sustainable solutions — as they do not need to meet composting standards and are typically not processed at such high temperatures as conventional fossil-based polymers. Users can select from a wider range of pigments but food packaging or other food-contact uses require approval by the relevant authority.
Above:
Analysis of a Colortherm iron oxide
pigment in the Lanxess laboratory
evolve. “The application of pigments in plastics will, like every other branch of chemistry, be affected by the legal and regulatory changes connected with the EU chemicals strategy for a more sustainable and toxic-free environment,” says Bartolucci. That strategy was approved in March 2021. He also highlights planned amendments concerning European food contact and toy regulations as other regulatory examples likely to have an impact on inorganic pigments, although he says he is confi-
Thermal stability The higher processing temperatures of engineer- ing plastics makes colouring a more challenging task, with heat stability a decisive factor, according to Bartolucci. “In the case of organic pigments, high processing temperatures often lead to accelerated decomposition, but inorganic alterna- tives can be subject to colour variations at tempera- tures above 180°C,” he explains. Bartolucci says Lanxess has recently expanded its
Colortherm Yellow inorganic pigment range for heat-resistant, high-performance plastics. Manufac- tured using the company’s proprietary Laux produc-
IMERYS GRAPHITE & CARBON
Premium carbon based solutions for thermal management, electrical conductivity and electromagnetic shielding.
C-THERM™ C-THERM™
| C-THERM™ PLUS HD
HIGH ASPECT RATIO GRAPHITE
Low loading Formulation flexibility Improved processing
Contact us at
imerys-graphite-and-carbon.com MAX HD ENSACO® CONDUCTIVE CARBON BLACK
Low loading Easy dispersion Low moisture pick-up
IMAGE: LANXESS
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100
