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Abstract
Abstract A TRACTABLE, AROMATIC POLY(SCHIFF BASE) HAVING THE RECURRING STRUCTURAL FORMULA: (DI(R-)-1,4-PHENYLENE, (DI(R-)-1,3-PHENYLENE, WHEREIN R IS INDEPENDENTLY SELECTED FROM H, CL, BR AND Q, Q BEING ALKYL OF 1 TO 3 CARBON ATOMS, AND X IS SELECTED FROM DI(T-)-1,4-PHENYLENE, DI(T-)-1,3-PHENYLENE (-AR1-N=CH-AR2-CH=N-)N DI(R)-1,4-PHENYLENE, DI(R)-1,3-PHENYLENE, DI(R)-BIPHENYLENE, 0, S, C0, SO2 AND ALKYLENE >O, >S, >CO, >SO2, AND ALKYLENE OF 1 TO 3 CARBON ATOMS; WHEREIN AR2 IS SELECTED FROM -(DI(T-)-1,4-PHENYLENE)-, -(DI(T-)-1,3-PHENYLENE)-, DI(T)-PHENYL, DI(T-)BIPHENYLENE, DI(T-)NAPHTHYLENE, AND -(AR1-N=CH-AR2-CH=N)NWHEREIN AR1 IS SELECTED FROM DI(R)-NAPHTHYLENE, AND R-PHENYLENE-X-(R-PHENYLENE -(T-PHENYLENE)2-, -(DI(T-)-NAPHTHYLENE)-(T-PHENYLENE)-X-(T-PHENYLENE)- (T-PHENYLENE)-X-(T-PHENYLENE) WHEREIN T IS INDEPENDENTLY SELECTED FROM H, OH, OQ, Q, CL AND BR, AND WHEREIN X AND Q ARE AS DEFINED ABOVE; AND N IS HIGH ENOUGH TO PROVIDE A FILM-FORMING MOLECULAR WEIGHT, THE POLYMER HAVING AN INHERENT VISCOSITY OF AT LEAST ABOUT 0.2 AND BEING SUBSTANTIALLY FREE FROM CROSSLINKING.
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