COMB-LIKE POLY(ARYL-ETHER-KETONES) CONTAINING NAPHTHALENE MOIETIES INTHE MAIN-CHAIN

1,5-Naphthalenediol was alkoxylated with 1-alkyl bromides containing 3 -16 C-atoms and then acylated with 4-fluorobenzoyl chloride under Frie del-Crafts conditions in 4- and 8-position of the naphthalene ring. Th ese new difluorides (3a - d) were condensated with hydroquinone, bisph enol-A and 4,4'-biphenyldiol, yielding the corresponding poly(aryl-eth er-ketones) 4a - d, 5a - d and 6a - d. The melting points o f both the difluorides and the poly(aryl-ether-ketones) decreased with increasin g side chain length. The molecular weights of some of the poly(aryl-et her-ketones) were characterized by GPC measurements coupled with visco sity determinations, and they were found to be in the range of M(n)BAR from 10000 to 19000. From polymer solutions, solid and mechanically s table films were produced on a glass plate by evaporating the solvents . A perpendicular order of the phenyl ring was calculated by the MMX m ethod.