Patent ID: 6120970
Filing Date: 2000-09-19
Classification: C08G,G03F

Abstract:
A poly[(thio)phenolcarboxamide phenyl (thio)ether] polybenzoxazole or polybenzothiazole precursor which has the following partial structure: ##STR11## where: A.sup.1 to A.sup.7 are--independently of one another--H, F, CH.sub.3, CF.sub.3, OCH.sub.3, OCF.sub.3, CH.sub.2 CH.sub.3, CF.sub.2 CF.sub.3, OCH.sub.2 CH.sub.3 or OCF.sub.2 CF.sub.3 ;and where independently at each occurrence T is O or S, m is 1, andZ is one of the following carbocyclic or heterocyclic aromatic radicals: ##STR12## where Q=C--A or N, where A=H, F, (CH.sub.2).sub.p CH.sub.3, (CF.sub.2).sub.p CF.sub.3, O(CH.sub.2).sub.p CH.sub.3, O(CF.sub.2).sub.p CF.sub.3, CO(CH.sub.2).sub.p CH.sub.3, CO(CF.sub.2).sub.p CF.sub.3 where p=0 to 8 (linear or branched chain), OC(CH.sub.3).sub.3, OC(CF.sub.3).sub.3, C.sub.6 H.sub.5, C.sub.6 F.sub.5, OC.sub.6 H.sub.5, OC.sub.6 F.sub.5, cyclopentyl perfluorocyclopentyl, cyclohexyl or perfluorocyclohexyl, where, in the isolated aromatic rings, a maximum of 3 N-atoms may be present per ring and only 2 N-atoms may be adjacent, and, in the fused ring systems, a maximum of 2 N-atoms may be present per ring,M=a single bond, (CH.sub.2).sub.n, (CF.sub.2).sub.n, CH(CH.sub.3), CH(CF.sub.3), CF(CH.sub.3), CF(CF.sub.3), C(CH.sub.3).sub.2, C(CF.sub.3).sub.2, CH(C.sub.6 H.sub.5), CH(C.sub.6 F.sub.5), CF(C.sub.6 H.sub.5), CF(C.sub.6 F.sub.5), C(CH.sub.3) (C.sub.6 H.sub.5), C(CH.sub.3) (C.sub.6 F.sub.5), C(CF.sub.3) (C.sub.6 H.sub.5), C(CF.sub.3) (C.sub.6 F.sub.5), C(C.sub.6 H.sub.5).sub.2, C(C.sub.6 F.sub.5).sub.2, CO, SO.sub.2, where n=1 to 8 ##STR13## with the proviso that, when Z=phenylene at least one of the radicals A.sup.1 to A.sup.7 must be other than H.