Customized to different requirements

VESTODUR^® is the brand name for a series of polybutylene terephthalate (PBT) compounds from Evonik that have been carefully adapted to the requirements of their applications.

• Some compounds have a low melt viscosity that is needed for injection molding applications. Others feature medium and high melt viscosities that are well suited for extrusion processing.
• Products of the GF range are glass fiber-reinforced that increase stiffness and dimensional stability upon exposure to heat.
• Compounds branded with FR contain non-migrating and non-corrosive flame retardants (free of brominated biphenyls or diphenylethers) permitting the production of self-extinguishing resins. These compounds are UL-listed (Underwriters Laboratories), partially up to 0.4 mm wall thickness or with up to 50% regrind.
• Flame-retardant compounds that are free of halogens and phosphorus are also available.
• Various products are laser-markable.

Material properties characterizing VESTODUR^® compounds are:

• high thermostability
• high stiffness
• low water absorption resulting in high dimensional stability
• high hardness and good strength
• good sliding friction behavior, low abrasion
• stable electrical properties
• good chemical resistance
• easy processability
• no tendency to form stress cracks