New poly-o-hydroxyamides, used for producing polybenzoxazoles e.g. dielectric of electronic device, has di(2-hydroxyphenyl)alkane-1,1'-diyl and diphenylalkane-1,1'-diyl groups in chain and unsaturated acyl end-cap groups

摘要

New poly-o-hydroxyamides (I) have di(2-hydroxyphenyl)alkane-1,1'-diyl and diphenylalkane-1,1'-diyl groups in the polyamide chain and unsaturated acyl end-cap groups. Poly-o-hydroxyamides of formula (I), with di(2-hydroxyphenyl)alkane-1,1'-diyl and diphenylalkane-1,1'-diyl groups in the polyamide chain and unsaturated acyl end-cap groups, are new: Q = asterisk -NH-Ar1-NH-CO-Ar2-CO-; Z = asterisk -NH-Ar1-NH-CO-Y1-CO- asterisk ; A = asterisk -NH-Ar1-NH-CO-Y2-CO- asterisk ; T = asterisk -NH-Ar1-NH- asterisk ; Ar1 = a di(2-hydroxyphenyl)alkane-1,1'-diyl group of formula (i); Ar2 = a diphenylalkane-1,1'-diyl group of formula (ii); X = an unsaturated acyl group; R1, R2 = H or a substituent; Y1, Y2 = divalent groups; n, m = 1-100; p = 0-50. . The full definitions are given in the DEFINITIONS (Full Definitions) Field. Independent claims are also included for the following: (1) Polybenzoxazoles of formula (II): (where Q', Z', A', T' = cyclized benzoxazole groups corresponding to Q, Z, A, T); (2) Production of (I) by reacting a bisaminophenol of the formula H2N-Ar1-NH2 with an activated dicarboxylic acid derivative of the formula L-CO-Y1-CO-L (where L is an activating group); (3) Production of (II) by heating (I); (4) Electronic devices comprising a dielectric containing (II); (5) Production of the electronic device by coating a substrate with a solution of (I), evaporating the solvent and cyclization to (II) by heating, structurization to form a resist structure with trenches, depositing conducting material on the resist so that it filled the trenches and removing excess material; (6) Production of an electronic device by applying a solution of (I) to a substrate trenches between metal structures on its surface and evaporating the solvent so that the trenches are filled with (I), then heating the substrate to cyclize (I).