MATERIALS | ENGINEERING PLASTICS
PolyOne was exhibiting for the first time at Fakuma since its acquisition of German specialty compound producer Comptek in November last year. Comptek manufactures a range of specialty coloured and performance compound and masterbatches for demanding applications, in polymers including PEEK, PEI and fluoropolymers, and has a strong niche customer base in Germany, Switzerland and Austria. A spokesperson for PolyOne said Comptek is now integrated into its Colorant Chromatics business and the company intends to use its global footprint to introduce the company’s specialty materials to customers in other geographical markets. At Fakuma, it showed a number of re-usable medical devices (including the dental tool pictured) produced in a special Comptek PEEK blend that is claimed to offer a 40°C higher glass transition temperature, more uniform post-moulded shrinkage, and easier colouring than standard PEEK grades.
BFN2502, BFN4221 and BFN6410. Pocan BFN2502 is a non-reinforced material that displays a high elongation at break of over 7% despite its halogen- free flame retardance package. It gains a UL 94 flammability rating of V-0 at 0.4 mm. It also has high tracking resistance of 600 volts (CTI A). Pocan BFN4221 has a glass fibre content of 20%
percent. It is characterised by high flame retardance, a low tendency toward corrosion in contact with metals, good thermal ageing resistance and colour stability at elevated temperatures. Pocan BFN6410 targets applications in lighting and LED technology. Its light reflection of more than 94% at 450 nm is unusually high, so that when used as a housing material, it reflects LED light almost entirely. Coming soon from Lanxess is a PBT compound
that is said to show outstanding results in glow-wire testing to IEC 60695-2-10. Applications develop- ment expert Alexander Radeck said it provides proof that halogen-free flame retardance packages can support good glow-wire resistance levels in PBT compounds. The new material also achieves very good results in the glow-wire testing of end products, IEC 60695-2-11.
Akro Plastic is now entering the PBT market in its own name. It has launched Precite, a family of PBT compounds that it says stand out from the competition thanks to its processing technology that delivers better mechanical properties and a superior ability to meet tight tolerances. The company, which specialises in ETPs, is not new to PBT, as it has been toll compounding for others, but this is the first time it offers its own brand. It is aiming mainly at electrical & electronics, and automotive applications. But not all PBT is for technical products. BASF
introduced a grade of Ultradur for coffee capsules around three years ago, a PBT that is inherently aroma tight and processes well into capsules with wall thicknesses as low as 0.2 mm on their base. Now, it has found an additive that yields a much lower oxygen transmission rate (OTR) in the cap- sules. It is used in a new grade unveiled at Fakuma, Ultradur Barrier B 1520 FC, whose barrier properties are said to be much better than can be obtained with PP/EVOH. The product also offers good barrier properties against water vapour, mineral oil, and aroma, and has good organoleptics. Processing on multi-cavity moulds presents no problems.
Comparison of OTR for BASF Ultradur Barrier and Ultradur B1520 FC 44 INJECTION WORLD | November/December 2017
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.dsm.com �
www.ascendmaterials.com �
www.dow-dupont.com �
www.lanxess.com �
www.solvay.com �
www.teknorapex.com �
www.domochemicals.com �
www.evonik.com �
www.basf.com �
www.emsgrivory.com �
www.radicigroup.com �
www.akro-plastic.com �
www.polyone.com
www.injectionworld.com
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