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Lanxess Developed New Plasticizer for Low-Temperature Flexible Rubber Products

Published on 2010-09-20. Author : SpecialChem

Leverkusen -- Lanxess, one of the world's leading manufacturers of synthetic rubber, has developed a new plasticizer for polar rubber products crosslinked with sulfur. Vulkanol VP RUC 9210 improves in particular the low-temperature flexibility of vulcanizates and replaces phthalate-containing Vulkanol 81 in the Lanxess portfolio. The new plasticizer features a similar price-performance ratio to its predecessor; both products are interchangeable in many cases without making any changes to the formulation.

"Vulkanol 81 was used, among other things, to enhance the low-temperature flexibility of high-quality technical rubber products such as seals and hoses made from oil-resistant nitrile rubber," says Dr. Thomas Brackemeyer, head of Global Product Management Specialty Products in the Lanxess Rubber Chemicals business unit. "This specialty plasticizer was used in many cases to improve the processing properties of synthetic rubbers - for example, to minimize cycle times in the production of rubber products. These tasks can now be performed by Vulkanol VP RUC 9210," adds Brackemeyer, "and for the most part without adapting the rest of the formulation components. From the outset, a possible 1:1 exchange was key in developing this additive."

As well as thio and carboxylic acid esters, the formulation for the previous plasticizer also contained DEHP. This di(2-ethylhexyl) phthalate is no longer used in the formulation for VP RUC 9210. "As a responsible specialty chemicals group with wide-ranging R&D expertise in rubber chemicals, we were quick to start looking for alternatives to DEHP. Our aim was to enable customers to switch quickly and smoothly," remarks Brackemeyer.

The RUC business unit is part of the Performance Chemicals segment of Lanxess, which recorded sales of EUR 1.53 billion in fiscal 2009.

About Lanxess

Lanxess is a leading specialty chemicals company with sales of EUR 5.06 billion in 2009 and currently around 14,400 employees in 23 countries. The company is represented at 42 production sites worldwide. The core business of Lanxess is the development, manufacturing and marketing of plastics, rubber, intermediates and specialty chemicals.

Source: Lanxess

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