PA11
Polyamide 11
Glass Transition (Tg)
42–46 °C
Melting Point (Tm)
185–190 °C
Density
1.03–1.05 g/cm³
CAS Number
25035-04-5
Recycling Code
♺ 7
Category
Engineering
Repeat Unit
–[NH–(CH₂)₁₀–CO]ₙ–
The repeating unit is the smallest structural fragment whose repetition builds the whole chain. Subscripts show the relative share of each unit in copolymers.
Key Properties
Bio-based (derived from castor oil); low water absorption (~1.8 %); excellent low-temperature impact and chemical resistance.
Applications
Offshore flexible pipe liners, fuel lines, powder coating, sports shoes.