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LANXESS Launches Easy-flowing Polyamides & Polyesters for Customized Lightweight Design

Published on 2016-07-04. Author : SpecialChem

COLOGNE -- LANXESS is one of the few suppliers that are continuously expanding its range of easy-flowing polyamide 6, 6.6 and PBT compounds (polybutylene terephthalate). “We are seeing a strong upturn in the level of market interest in the benefits that these materials open up compared to standard materials in terms of processing, production costs and design freedom. They are particularly suitable for manufacturing the kind of thin-walled components that are ideal for lightweight construction and the miniaturization of assemblies,” explains Tim Arping, a marketing expert at the LANXESS High Performance Materials (HPM) business unit.

PA & Polyester

New Polyamides & Polyesters Ideal for Lightweight Construction


Even More Free-flowing – New Generation of Durethan BKV 30 XF


Durethan BKV 30 XF (XtremeFlow) – latest Product Innovation


  • Polyamide 6 with 30 percent glass fiber content is the successor of Durethan DP BKV 30 XF and is over 17 percent easier flowing (flow spiral, 8 x 2 millimeters, 280°C melt temperature).
  • Another standard polymer with 62 percent higher flowability.
  • Have good mechanical property profile that is almost identical to that of its predecessor (Durethan BKV 30) and also produces outstanding surfaces.

“We think it has huge potential for use in applications such as light but extremely strong mounts and brackets in cars,” says Stefan Theiler, who is an expert in the development of polyamide compounds at HPM.

Virtually Any Warpage – New Glass-bead-reinforced Polyamide 6 Grades


Durethan BG 30 X XF, BG 30 X H2.0 XF and BG 30 X H3.0 XF – Three New Polyamide 6 Compounds


  • Reinforced with a 30 percent mix of glass fibers and glass microbeads and exhibit outstanding flowability and an exceptionally low susceptibility to warpage. 
  • With good mechanical property profile, their flowability is more than 30 percent higher than that of Durethan BG 30 X, a similar standard polyamide 6. 

“The compound with H3.0 thermostabilization has a very low copper and halide content and is customized for natural-colored and lightly colored applications in electrical engineering and electronics, such as plugs, plug connectors and fuse boxes. The H2.0 material version is aimed at components that are colored black and are subjected to higher heat loads,” says Theiler.

Comparison of Key Properties: The Greatly Improved Flowability of the New Durethan BKV 30 XF Grade Results in a Melt Viscosity That is Only Half as High as That of its Predecessor Durethan DP BKV 30 XF. The Two Materials Have a Largely Identical Mechanical Property Profile That is Almost as Good as That of Standard Polyamide 6 Durethan BKV 30, Which is also Reinforced with 30 Percent Glass Fibers
Fig. 1: Comparison of Key Properties:
The Greatly Improved Flowability of the New Durethan BKV 30 XF Grade Results in a Melt Viscosity That is
Only Half as High as That of its Predecessor Durethan DP BKV 30 XF. The Two Materials Have a
Largely Identical Mechanical Property Profile That is Almost as Good as That of Standard Polyamide 6 Durethan BKV 30,
Which is also Reinforced with 30 Percent Glass Fibers.

Easy-flowing Polyesters with Lower Density


  • LANXESS offers a wide range of easy-flowing Pocan XF polyester compounds. 
  • Range includes non-reinforced and reinforced products with flow properties that are usually much better than those of similar standard grades and are often more resistant to hydrolysis.

Pocan B 1205 XF – Non-reinforced PBT Compound


  • With its outstanding flowability, this material is perfect for the trend toward miniaturization in the electrical engineering and electronics sectors. 
  • Ideal for complex components with exceptionally thin wall thicknesses, such as mini plugs.

Pocan B 3217 XF


  • Ideal for combining thin wall thicknesses of components with high mechanical stability.

Boris Neuwald, product developer for Pocan at LANXESS explains: “Furthermore, they exhibit an up to five percent reduced density, which means processors can save on material. This reinforced PBT with 16 percent glass fibers features a vastly improved fill behavior, particularly at low wall thicknesses. The glass fibers are therefore much more evenly distributed in narrow cavities than when using standard grades, which gives the component excellent mechanical stability.”

Lower Filling Pressure, Lower Melt Temperature


The better a thermoplastic flows, the broader its processing window is. For example, processors can lower the melt temperature, which shortens cooling times and thus drives down cycle times, too. The end result is higher productivity. “For instance, Durethan BG 30 X XF helped to lower the melt temperature in the production of a fuse box by around 40°C compared to when using Durethan BG 30 X. That cuts the cycle time by 34 percent,” explains Theiler.

Alternatively, filling pressures can be lowered, thereby reducing mold wear and maintenance outlay and giving processors the opportunity to use smaller injection molding machines with lower locking forces, which saves costs and results in added flexibility. “In the case of a large fuse box, for instance, switching from Durethan BG 30 X to Durethan BG 30 X XF enabled the processor to lower the filling pressure for injection molding the part by some 500 bar. All four cavities of the mold could then be filled simultaneously, which doubled productivity,” says Theiler.

What’s more, easy-flowing thermoplastics can also be used to achieve higher injection speeds and better surface qualities.

About LANXESS


LANXESS is among leading specialty chemicals companies with sales of EUR 7.9 billion in 2015 and about 16,600 employees in 29 countries. The company is currently represented at 52 production sites worldwide. The core business of LANXESS is the development, manufacturing and marketing of chemical intermediates, specialty chemicals and plastics. Through ARLANXEO, the joint venture with Saudi Aramco, LANXESS is also a leading supplier of synthetic rubber. LANXESS is listed in the leading sustainability indices Dow Jones Sustainability Index (DJSI World) and FTSE4Good.

Source: LANXESS

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