Polyetherketoneimides

Details Polyetherketoneimides Polyetherketoneimides

C - Chemistry, Metallurgy

08

G

402/218, 402/31

C08G 73/10 (2006.01) C08G 61/12 (2006.01)

Patent

CA 1337620

Polyetherketoneimides and copolymers thereof having an imide repeat unit of formula Image wherein Ri is Image or Image in which A is a direct bond or -O- or another substantially non-electron-withdrawing group, and/or Ra is an at least partly arylene moiety other than m- or p-phenylene. These polymers tend to have improved melt stability and other properties, especially when made from a pre-existing imide monomer, instead of by the known amic acid route which results in uncyclised amic acid residues in the polymer.

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