1,3-Benzenedicarboxylic acid, polymer with 1,3-diisocyanatomethylbenzene, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,1'-[(1-methylethylidene) bis(4,1-phenyleneoxy)]bis[2-propanol] and 2,2'-oxybis[ethanol]

1,1′-[(1-Methylethylidene)bis(4,1-phenyle- neoxy)]bis(2-propanol) polymer with 1,3- benzenedicarboxylic acid, 2,2′-oxybis- ethanol, 2-ethyl-2-(hydroxymethyl)-1,3-pro- pane diol, and 1,3-diisocyanatomethylbenzene