Polyimide resin - 2/1/2007

GE Plastics' (Pittsfield, Mass.) Extem polyimide resins, a new family of amorphous thermoplastic polymers, are said to eliminate the drawbacks of semicrystalline materials, imidized thermosets and competitive amorphous thermoplastics. Inherently flame-retardant (they contain no halogenated additives), the resins

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GE Plastics' (Pittsfield, Mass.) Extem polyimide resins, a new family of amorphous thermoplastic polymers, are said to eliminate the drawbacks of semicrystalline materials, imidized thermosets and competitive amorphous thermoplastics. Inherently flame-retardant (they contain no halogenated additives), the resins reportedly withstand high temperatures and harsh chemical environments and retain their stiffness and dimensional stability. Properties reportedly include continuous use temperatures to 230°C/446°F; glass transition temperatures as high as 310°C/590°F; high stiffness/creep resistance under load; resistance to chlorinated solvents; and melt processability using conventional extrusion and molding equipment.