Polyether-imide silicone

Membrane nonporous membrane elastomer (example, rubbers and silicone rubbers) or glassy (example, polycarbonate, polyether imide, polyethersulfone, polyimide, polysulfone, polystyrene, polyvinyl chloride, polyvinyl fluoride and teflon.)... 

Polyetherimide molding compounds are commercially available in extmsion and injection molding grades. The major suppliers of this material include GE Plastics (JJltem), Compound Technologies, DSM Engineering, LNP, and RTF A polyether-imide-polycarbonate alloy and a polyetherimide-silicone alloy are also available from GE Plastics. 

PEI blends have also been further modified with silicone polyether-imide copolymer to improve impact strength, especially at lower temperatures. Use of a sihcone polyetherimide as an impact modifier has the added benefit of retaining or even improving flame retardance, as it has a lower fuel value than traditional rubbery impact modifiers. The sili-cone-PEI copolymer also has the stabihty needed to survive high PEI processing temperatures without decomposition. These PEI-sdicone copolymer blends are hazy or opaque, phase-separated systems. 

---