5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, polymer with (butoxymethyl)oxirane, 4,4'-(1-methylethylidene)bis(phenol) and 2,2'-((1-methylethylidene)bis(4,1-phenyleneoxymethylene))bis(oxirane), benzoate 71888-81-8 75790-60-2