Therban - HNBR - LANXESS Deutschland GmbH

Kunststoffe international, 2005-11-21, Driving the Automotive Industry: Engineering Elastomers
...gth values of up to 30MPa are achievable. New products on the market include low-Mooney, peroxide-curable HNBR grades such as Zetpol LL, the fully saturated Zetpol 2000 and Therban AT KA 8966 for the production of injection moulded O-rings, seals and gaskets. The main problem in the new and further development of low-Mooney HNBR grades lies in the sharp rise in viscosity during the hydration stage: the Mooney viscosity of the NBR feedstock is almost doubled. The use of Therban A 3406 in injectio...

Kunststoffe international, 2005-11-21, Elastomers: Flexible and Customised
...demand. The low flowability of fully hydrated HNBR rubbers is being overcome by using lower-molecular-weight elastomers with a narrow molecular weight distribution. Products with Mooney viscosity values of less than 40, such as Therban AT VPKA 8966 (Lanxess) and Zetpol 2000LL (Zeon), are therefore permitting faster cycles and more complex geometries while providing high strength values at the same time. The extremely low-temperature-resistant, saturated HNBR product Zetpol 4300 (Zeon) also has ...

Kunststoffe international, 2006-06-29, Hard-soft Combinations: Perfectly Matched
...sic requirements in terms of adhesion and cost efficiency. They also have excellent injection moulding properties. These materials are a combination of special polyamide variants (Durethan) as the thermoplastic component and modified rubbers (HNBR, Therban AT) as the elastomer component. Both high-performance components are perfectly matched in terms of cycle times and so permit economic processing. The trend in the automotive industry towards more compact engines, weight saving and minimal noi...

Kunststoffe international, 2007-09-19, Flexible with High Loadbearing Capacity
...the future. Reasons for this include new technologies that are maximizing the utilization of reserves. Furthermore, engineers can now take advantage of high-performance materials such as the heat- and oil-resistant HNBR rubber Therban from Lanxess of Leverkusen, Germany, which is ideal for use in the extremely harsh conditions of an oilfield. Take blow-out preventers, for example, which are used to seal off well bores, so protecting people and the environment: These products can be manufactured ...

Kunststoffe international, 2008-02-29, EPDM and HNBR versus Summer Smog
...because the plasticizer-free hoses must naturally not embrittle at low temperatures either. Low Viscosity without Plasticizers As detailed studies at Lanxess have shown, both peroxide cross-linked vulcanizates of Buna EP, an EPDM rubber, and of Therban, a hydrogenated nitrile rubber (HNBR), possess the necessary properties. Both are already widely used in the automotive sector: due to its weatherability, aging-resistance and good low-temperature flexibility, EPDM finds application particularly...

Kunststoffe international, 2010-04-20, From Natural Rubber to High-Tech Material
...on of the elastomer molecule for which decades of experience with this class of material are required. An example of this is the higher melt flow of HNBR elastomers: Lower viscosities mean that products from the Lanxess Therban AT range can now flow more easily into filigree molds than even a few years ago. This means that they can for example be made into particularly delicate seals (Fig. 7). The rapid filling of large volume molds is also eased, which increases the failure safety of solid ru...

Kunststoffe international, 2010-09-24, Elastic Diversity
... for the elastomer industry at K2010 is again the “rubber street”, organized by Lanxess AG, Leverkusen, Germany. It serves as the industry forum and provides an overview of the elastomer processing value chain (Fig. 4). The novel HNBR, Therban AT3400VP, reaches a new level. Like the standard grades, it can be used for seals under high dynamic stress from -30 to 160°C. But with processing viscosities of 100 to 1,000 Pa, this grade is 1,000 to 10,000 times more easyflowing. This allows economic pr...

Kunststoffe international, 2011-01-25, Appealing to (almost) all the Senses
...ressure. The first successfully completed projects in the automobile sector have shown that due to the very good flowability impressive results can be achieved in processing even extremely thin walled parts. Special new grades from Therban (HNBR) are particularly suitable for seals that are used for the pressurized fueling of natural gas driven vehicles. The synthetic rubber from Lanxess is resistant to natural gas and has clearly better low temperature flexibility than fluoro rubbers, even at -...