Patent ID: 6153350
Filing Date: 2000-11-28
Classification: C08G,G03F

Abstract:
A poly[bis(thio)phenolcarboxamide-(thio)ether] polybenzoxazole or polybenzothiazole precursor which has the following partial structure: ##STR12## where: A.sup.1 to A.sup.6 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 ;T is O or S, and m is 1;Z is one of the following carbocyclic or heterocyclic aromatic radicals: ##STR13## 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(C.sub.6 H.sub.5), C(C.sub.6 F.sub.5).sub.2, C(C.sub.6 F.sub.5).sub.2 CO, SO.sub.2, ##STR14## where n=1to 8, with the proviso that, when Z=phenylene, at least one of the radicals A.sup.1 to A.sup.6 must be other than H, and when Z= ##STR15## where Q is C--F and M is a single bond, the NH--CO groups of the polybenzoxazole precursor partial structure must be in the o- or p-position to the O bridge.