additives | Stabilisers
0.4% it provides improved performance compared to existing antioxidant solutions, offering increased protection of the polymer during processing while delivering higher productivity and greater durability in the end article. Furthermore, as an optimised multi- component system, it simplifies handling for the compounder by integrating usually difficult to handle components in an easy to use form (ANOX NDB – non dust blend). Improved colour stability is also claimed.
Above: BASF is targeting interior automotive parts with its latest HALS introductions
additives for demanding applications such as high voltage power cables and automotive plastics. Recent developments from the company include
Lowinox Fast XL, which increases productivity for XLPE insulated power cable producers as it requires less time to cross link compared to existing commercial liquid antioxidants, enabling a claimed 5-7% faster cable production line speed. It is also said to provide improved cable reliability and performance as it is less sensitive to production variability throughout long cable production runs. The company says that the very high levels of cleanliness required by cable producers can be achieved by filtration prior to dosing, which reduces the risks of particulate contaminants in the insulation which can lead to premature cable failures. Higher efficiency also lowers the dosage of both the antioxidant and peroxide by 6-8%, which reduces costs. Addivant claims the robustness of the new solution also means cable producers experience less downtime as discoloured material does not build up on the equipment or screen-pack, extending productivity and increasing reliability. Weston 705 is a drop-in replacement for TNPP
and, as such, provides an immediate nonylphenol-free alternative for compounders serving the food packaging industry. According to Addivant, its performance in use is superior to TNPP and other nonylphenol-free antioxidants like AO168 because it can be used at lower loading levels and does not bloom from the polymer. It can also reduce gel formation, allowing for smoother processing and higher quality output. The additive is registered for food contact applications in more than 50 countries around the world. Addivant says that Lowinox XPS 162 is an effective
stabilisation solution for polystyrene foams, particularly XPS. It is said to enable compounders to use the latest generation of high performance brominated polymeric flame retardants without compromising technical performance or productivity. Used at a concentration of
20 COMPOUNDING WORLD | September 2016
Performance demands Demand from plastic compounders for more advanced antioxidant and UV stabiliser solutions that meet the latest requirements of the markets they operate in is also a trend identified by Dr Rick King, Senior Technical Manager with BASF’s Plastic Additives business. “This year, two recurring themes have been discolouration resistance and improved processability,” he says. “With regard to antioxidants, there are some new polymers out there with higher melt viscosities which give stronger properties. However, these higher molecular weight polymers can be more difficult to process. This might lead to a breakdown of the polymer (sacrificing value), and/or may lead to discolouration, which can compromise the visual appeal. So we have developed some stabilisation systems to help these polymers out. With regard to UV stabilisers, there are always new applications and tests coming up where we can develop systems and solutions to help compounders to be more successful.” BASF is launching two new UV stabilisation products - Tinuvin 880 and Tinuvin XT 55. Tinuvin 880 is a Hindered Amine Light Stabiliser (HALS) for automotive applications. The company says that the new generation of methylated HALS enables formulators to optimise the long-lasting appearance and performance of various automotive interior parts. Tinuvin 880 is claimed to provide intrinsic long-lasting UV resistance as well as improved thermal stability, which is becoming more important in interior applications. It is also designed to improve overall part quality by eliminating defects caused by mould deposits and surface stickiness, even in materials formulated for high scratch-resistance. It is pitched at interior automotive applications in polypropylene, other thermoplastic polyolefins and styrenic blends, including instrument panels, door panels, consoles, glove boxes and trims. Tinuvin XT 55 has been introduced as a stabiliser for artificial turf and technical textiles. Fibres and tapes used for technical textile applications in the construc- tion industry, such as geo-textiles, roofing insulation and barrier structures as well as carpets, have to withstand harsh climate conditions including prolonged exposure to UV light, fluctuating and elevated tempera-
www.compoundingworld.com
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 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108