Carbon black | additives feature
New carbon blacks are really green Peter Mapleston reports on three
The supply picture for carbon black is taking on a new complexion. New companies are coming onto the market with products made from non-conventional sources that include old rubber tyres and used wooden pallets. The headline-grabbing advantage of such products is clearly their “green” credentials: even today, large quantities of used tyres are either burned or used in low-value second-life applications. German company Pyrolyx, headquartered in Munich,
claims to have developed the fi rst sustainable process for the recovery of high-quality carbon black from old tyres. It has patents in the USA and in China, and expects to obtain coverage in more countries this year. Rolf-Hendrik Arens, VP for communications and
investor relations, says that Pyrolyx provides a closed- loop-recycling technology, aimed mainly at tyre manufacturers themselves, as well as technical rubber companies. “We are in some discussions with distribu- tors and they would like to focus on plastic compound companies,” he says. In late September, Arens said Pyrolyx was in the engineering and fi nal planning phase to begin the start of its fi rst commercial plant. He would not divulge its capacity. Pyrolyx may operate future plants itself, or license partners.
www.compoundingworld.com
companies that are producing “green” carbon blacks from reclaimed
feedstocks including used tyres and recycled wooden pallets
Pyrolyx carbon black is between the so-called hard
and soft carbon black types, which gives it a very broad application range. Sustainability is an important issue in the world of
plastics compounding, says Philipp Theden, CEO at Carbon Clean Tech (CCT), headquartered in Potsdam, Germany, and which is already in commercial produc- tion. “One area with signifi cant recent development is production of alternatives to traditional carbon black.” His company has developed recovered carbon black (rCB), also produced from post-consumer rubber. Theden says it can be used as a substitute, or partial substitute, for traditional carbon black in a plastics masterbatch. “Not only does the use of rCB save on natural
Carbon Clean
Tech produces recovered
carbon black from old tyres
November 2014 | COMPOUNDING WORLD 37
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