Antioxidants | additives feature
Antioxidant suppliers are working hard to develop stabiliser systems that extend durability while reducing cost. Peter Mapleston explores the latest products and chemistries available to compounders
New chemistries extend scope for polyolefi ns
Increased use of polyolefi ns in the automotive, building & construction, food & drink markets and beyond is presenting additional performance requirements that range from greater outdoor durability and thermal stability to reduced leaching. New high-performance thermal and ultraviolet (UV) stabiliser systems, as well as resin optimization, will be required to support these new demands. Antioxidant (AO) additive suppliers are aiming to
meet extended durability targets through the development of new technologies that surpass the protection afforded by traditional options while maintaining or even reducing costs. Addivant, for example, reports a trend towards use of a broader range of additive chemistries. “Today, more than ever, we see the compounding industry moving beyond the use of older commodity antioxidants of 1010, 1076 and 168 and instead exploring the use of higher performing additives that meet the specifi c requirements of a target application,” says Peter Smith, president-commercial. Smith says Addivant is capitalising on recent
investments in R&D and innovation in general “to develop a series of solutions that respond to the key market trends and address today’s unsolved problems.”
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He cites as an example a new NDB (non-dust blend) with low-odour thermal stabilisation and improved UV package that is under development for improved long term heat ageing performance, enabling downsizing of parts for light-weighting. NDB products are supplied in a proprietary non-dust blend form to facilitate handling and reduce health and safety risks. Addivant has also developed a new range of Anox
NDBs for critical applications such as electrical & electronics and medical where cleanliness is key. It says these avoid the presence of impurities which may, for example, have a negative impact on electrical properties. “Addivant is working with several leading compounders, to implement the new technology,” a company representative says. For the wire and cable industry, new products include
the Anox NDB RXL19 stabilisation package for Sioplas compounds. It improves polymer protection during the high temperature grafting process while displaying minimal interaction with the peroxide, increasing the mechanical properties and longevity of the fi nal cable. Addivant also reports success with its Lowinox XPS
162, developed to upgrade the performance of the new fl ame retardants replacing traditional types such as
September 2015 | COMPOUNDING WORLD 39
Main image: Best known for its PA
stabilisers,
PolyAd Services is expanding its product
portfolio into polyolefi ns
PHOTO: POLYAD SERVICES
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