Aromatic polyether ketones

Details Aromatic polyether ketones Aromatic polyether ketones

C - Chemistry, Metallurgy

08

G

18/12, 402/37, 2

C08G 8/02 (2006.01) B01D 71/52 (2006.01) C08G 65/40 (2006.01) C08J 5/18 (2006.01) C08L 71/00 (2006.01)

Patent

CA 1321400

Abstract Aromatic polyether ketones Polyether ketones based on diphenols corresponding to the following general formula (I): <img> (I) wherein R1 and R2, independently represent hydrogen, halogen, C1-C8 alkyl, C5 or C6 cycloalkyl, C6-C10 aryl or C7-C12 aralkyl; m represents an integer of from 4 to 7; R3 and R4, may be selected individually for each X and independently represent hydrogen or C1-C6 alkyl, and X represents carbon; with the proviso that, on at least one atom, X, R3 and R4 both represent alkyl; the production thereof and application as films or composite films with other plastic films as well as their utilisation as permeation membranes. Le A 26 319

612358

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