Pigments | colour
Pigments get functional
In the past, the role of a pigment was fairly straightfor- ward – primarily providing value-for-money colour and visual appeal to plastic compounds and the end-use applications they were destined for without unduly affecting mechanical performance or processing efficien- cy. However, increasingly pigments today need to meet challenging environmental goals and add functionality. There are two key trends in colour pigments for
plastics compounding at present, according to Mark Ryan, Marketing Manager at The Shepherd Color Company. “One is constant price pressure on traditional pigments while at the same time people look for new applications and technology to do differentiated things,” he says. “We also see that there is increasing pressure to meet green and sustainable products - but that can mean different things to different people in different markets. We think that the inertness of our CICP pigments (Complex Inorganic Colour Pigments) gives them inherent safety while allowing the production of materials with long and useful lifecycles.” Looking further ahead, Ryan believes that the
concept that colour pigments can also be used to deliver functionality will become increasingly important. “Pigments colour material,” he explains. “But laser
www.compoundingworld.com
Pigment technology continues to bring new and exciting colours and effects to plastics. However, Mark Holmes finds that additional benefits in performance and production are now being offered
direct structuring technology allows the addition of conductive areas for things like antennas, for example. Pigments that are durable for building products applications but reflect the sun’s invisible energy like our Arctic IR reflective pigments also stress this colour and functionality. We continue to optimise our current Arctic IR Reflective pigments by pushing the three main drivers of performance: Masstone jettness, Total Solar Reflectivity and tint strength. We have a range of tailored products that balance these properties based on the technical requirements of the application.” Ryan says the company is continually looking at new
Main image: Clariant’s
Perfect PV Fast Pink, which is based on
bio-succinic acid, provides an up to 90% carbon
footprint reduction
September 2016 | COMPOUNDING WORLD 33
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