By Liz White, UT staffLeverkusen, Germany-Lanxess Deutschland GmbH, Bayer AG's rubber, polymers and fibres spin-off, is continuing to restructure its synthetic fibres business. The German group announced 22 March that the Dorlastan fibres unit will turn its polyamide and polyester businesses into a stand-alone operation, while keeping the Spandex polyurethane fibres unit in-house. The polyamide/polyester unit Dorlastan Fibers & Monofil GmbH in Dormagen, Germany, will become into an independent monofilament company, called Perlon-Monofil GmbH, the company added. Perlon will run the monofilament business-consisting of polyamide/polyester filaments-in future. The Dorlastan business unit, which makes spandex polyurethane fibres, will remain with the renamed Dorlastan Fibers GmbH. Both companies are wholly owned subsidiaries of Lanxess Deutschland GmbH.Lanxess listed various reasons for this move. The businesses make different products for a different customer base. They are represented in different markets, which, a Lanxess statement said, "are developing very differently." Turnover of the Dorlastan Fibers & Monofil unit in 2003 was around Euro 100 million, with roughly 500 employees. Dorlastan Fibers will remain in the Fibers Business Unit, under a new managing director Michael Müller, from LANXESS Buna GmbH, who will take over from Jörg Hellwig as managing director of Dorlastan Fibers & Monofil. Hellwig will transfer to Lanxess AG's corporate centre as head of procurement from 2006.Perlon-Monofil will be in Lanxess' Semi-Crystalline Products business, and will be headed by managing director Frank Winkes, who has managed the monofilament business since November 2004. "