Electronic substrate material, resin, and production method for resin

An electronic substrate material comprising a resin having a structure including structures represented by a formula (UN1) and a formula (UN2) or including structures represented by the formula (UN1) and a formula (UN3);

• where, in the formula (UN1):
• R1 and R2 each independently represent at least one selected from the group consisting of a halogen atom and an organic group having 1 to 12 carbon atoms;
• m represents 0, 1, 2, 3, or 4;
• at least one R1 and at least one R2 present when a sum of two m is 2 or more are optionally an identical group or mutually different groups;
• and * each represent a bond;
• where, in the formula (UN2):
• X is an organic group having 6 to 12 carbon atoms or —C (CF3) 2-;
• R3 is an organic group having 1 to 10 carbon atoms;
• when a plurality of R3 are present, the plurality of R3 are optionally an identical group or mutually different groups;
• n represents 0, 1, 2, 3, or 4;
• and * each represent a bond;
• where, in formula (UN3):
• Y is a single bond, —O—, —S—, —SO—, —SO2—, or an organic group having 1 to 10 carbon atoms;
• R4 is an organic group having 1 to 10 carbon atoms;
• R5 is an organic group having 1 to 10 carbon atoms;
• when a plurality of R4 or a plurality of R5 are present, the plurality of R4 are optionally an identical group or mutually different groups, and the plurality of R5 are optionally an identical group or mutually different groups;
• p represents 1, 2, 3, or 4;
• and * each represent a bond.