BR-S13 is a halogen free flame retardant developed for TPU. When used alone, only 1.5% dosage could afford V0 flame retarding performance, while maintaining the transparency of TPU materials. When used in combination with MCA, 1% BR-S13 plus 2% MCA could afford V0 flame retarding performance at an even lower cost. What’s more, the resulting TPU largely maintains the mechanical properties.

1. Materials

Polyether TPU: BASF 1185A 

Flame Retardants: Inovia BR-S13, XS MC25

2. Processing

2.1 Drying: 85℃, 4h.

2.2 Using:

BR-S13 for standalone use: It is recommended to use a liquid feeding device to add.

Using BR-S13 with MC25:Mix BR-S13 with BASF 1185A, then add MC25.

2.3 Extrusion temperature: 185-205℃

2.4 Injection temperature: 185-195℃; mold temperature: 60℃ 

3. Application Example Data

Table 1 Flame Retardancy

Table 2. Mechanical Properties

Test Condition：ASTMD412，500mm/min 

Table 3. Other Properties

Summary

BR-S13 can increase the MFI of TPU. The mechanical properties will deteriorate obviously if the MFI of TPU is way too high. Therefore, TPU materials with a relatively lower MFI is highly recommended. 

TPU Retardant BR-S13-SDS-US.pdf

TPU Retardant BR-S13_TDS.pdf