Polyetherimide ( PEI ) is an amorphous, transparent and amber high performance thermoplastic with the characteristics common to this group - see polyetheretherketone ( PEEK ). Relative to PEEK it is ...
Composition: (-N-[CO2]-C6H3-O-C6H4-[CH3]2-C6H4-O-C6H3-[CO]2-N-C6H4-)n ...
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