LANXESS at Plastics Design and Moulding 2008

The Semi-Crystalline Products business unit of specialty chemicals group LANXESS will once again be represented at the Plastics Design and Moulding trade fair.

The event takes place from 15th to 17th April, 2008 at the Telford International Centre in Telford, England. The fair is amongst the largest and most important events in the British plastics industry calendar and is also gaining increasing recognition outside Britain. The LANXESS presentations will focus on new material grades and applications of the polyamide Durethan and the polybutylene terephthalate (PBT) Pocan. “Following the success of our last visit to Telford, we are keen to use this opportunity to further consolidate our reputation as an innovative development partner in such diverse sectors as the domestic appliance, automotive, and electrical and electronics industries,” says Colin Bennett, Account Manager who works for the Semi-Crystalline Products business unit in the United Kingdom.

One of the highlights of the LANXESS stand will be injection-molded structural inserts that are based on glass-fiber reinforced polyamide (PA) 6 Durethan BKV 35 H2.0 and used to reinforce the bodywork of cars. The inserts draw on CBS (Composite Body Solutions) technology from L&L Products Europe. In the event of a crash, they support the bodywork, thus preventing the sheet metal panels from buckling or failing prematurely. This provides increased protection for the occupants of the vehicle. As the panels can be made thinner, there is also a significant weight reduction. In the Citroën C4 Picasso, inserts of this kind reduce the weight of the vehicle by 12 kilograms.

Another key focus will be the easy-flowing polyamide 6 and 66 grades which LANXESS markets under the names Durethan EasyFlow and Durethan XtremeFlow. Their glass-fiber content ranges from 30 to 60 percent, while the high flowability has clear cost advantages when it comes to processing. For example, the processing temperature can be reduced, thus shortening cooling and cycle times and resulting in more cost-effective production. Another product sure to attract attention is the PA 6 Durethan DP BKV 60 EF H2.0 with 60 percent by weight glass fiber. It can be processed in the same way as a standard PA 6 with 30 percent glass-fiber reinforcement and offers a similar level of flowability. Due to its high elasticity modulus, stiffness is increased by around 100 percent. As a result, walls can be made thinner and component weight reduced considerably without impacting on mechanical performance.

In the worldwide electrical engineering and electrical industry, there is currently a growing demand for flame-retardant thermoplastics that do not contain chlorine or bromine. At PDM, LANXESS will therefore be introducing new polyamide 6, 66 and PBT grades. They comply with the EU WEEE and RoHS directives and for the most part also fulfill the requirements of the IEC 60335-1 domestic appliance standard governing the flammability of plastics in unsupervised domestic appliances. This range of products includes the flame-retardant, halogen- and phosphorus-free polyamide 66 Durethan DP A30S FN30. It meets the UL 94 standard with an excellent V-0 rating, even at a specimen thickness of 0.4 mm.

Other product innovations from LANXESS include various polyamide 6 and 66 grades for hollow parts in car engine compartments. These include pseudoplastic materials for components in the engine’s air management system. The impact modified materials demonstrate good resistance to thermal aging and can be used as a substitute for special polyamides. They can be processed using suction and extrusion blow molding, and sequential extrusion blow molding.

Durethan DP BC 600 HTS is LANXESS’s response to the trend for turbocharged engines, which use charge air tubes with soft bellows. The non-reinforced PA 6 has an elasticity modulus of only around 350 MPa (conditioned) and can be used to produce charge air tubes as single-material plastics solutions by suction blow molding. In terms of processes and material, this provides a simple, cost-effective alternative to laborious sequential blow molding involving two polyamides of differing hardness.

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