PPX
Parylene C
Glass Transition (Tg)
~80 °C
Melting Point (Tm)
~290 °C
Density
1.29 g/cm³
CAS Number
28804-46-8
Recycling Code
None
Category
Functional & Smart
Repeat Unit
–[CH₂–C₆H₃Cl–CH₂]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
Deposited from the vapour phase at room temperature, giving a truly pinhole-free conformal coating that penetrates crevices; no solvents or cure step.
Applications
PCB conformal coating, implantable device encapsulation, MEMS.