Patent ID: 6297351
Filing Date: 2001-10-02
Classification: C08G

Abstract:
A polybenzoxazole precursor having recurring units represented by the following general formula (1): ##STR5##wherein n denotes an integer of 1-1000, X is selected from bivalent aromatic groups represented by the following general formulas (2)-(4) each having two OR groups (Rs each denotes H or a monovalent organic group and may be the same or different), the amide group in the formula (1) and the OR group respectively bond to the adjacent carbon atoms of the aromatic group, and Y denotes a bivalent organic group containing fluorine: ##STR6##wherein R.sub.1, R.sub.5 and R.sub.11 each denotes F or a monovalent organic group containing fluorine, R.sub.2, R.sub.6, R.sub.7, R.sub.8, R.sub.12, R.sub.13, R.sub.14, R.sub.15 and R.sub.16 each denotes H, F or a monovalent organic group containing fluorine and may be the same or different, and R.sub.3, R.sub.4, R.sub.9, R.sub.10, R.sub.17 and R.sub.18 each denotes H or a monovalent organic group and may be the same or different.