Product novelty 20. August 2024

Thermoplastic polyurethanes for yellowing-resistant applications

Aliphatic materials have a high colour stability under UV exposure and are therefore particularly suitable for transparent and light-colored products with a long service life.

These raw materials can be used for various applications in the automotive, textile, sports, leisure or electronics industries.

Aliphatic Pearlcoat, Pearlthane and Estane TPUs are easy to process materials that meet important OEM specifications in various end applications.

These TPU grades combine outstanding properties of aromatic TPUs, such as high resilience and good processability, with special properties of aliphatic TPUs, such as:

• Excellent colour fastness under UV exposure
• High-quality feel
• Excellent elasticity/resilience properties
• No efflorescence

Aliphatic TPUs based on polycaprolactone polyester: See PEARLTHANE 91T product range.
Aliphatic TPU innovations based on ether: ESTANE 96F85EXP and ESTANE ALR MC-93A-VE.
For these easily colorable aliphatic TPUs, the use of aliphatic masterbatches is recommended: DANCOLOR TPU.


Yellowing-resistant raw materials can also be used in coating or adhesive applications. Examples of applications are outdoor textiles or transparent bonding (glass, safety glass, plastic-glass composites).

Aliphatic hotmelt product innovations are e.g.:

PEARLBOND 920L: Highly transparent polycaprolactone polyester TPU with very good adhesion and processing properties.

ESTANE AG 8451-E: TPU based on polyether, specially developed for use as a transparent interlayer film. It can be used universally for surface bonding in optical applications; for example, as adhesive film for glass-polycarbonate composites without surface pre-treatment/primer.